Abdullah Mohd Al-Sad


 

 

Abdullah Mohd Al-Sadi, Ph.D 


      Dean, Associate Professor 

Phone   +(968) 2414 1214

Fax       +(968) 2441 3418

Room     221

Email     alsadi@squ.edu.om

                     

 

Education

  • PhD: 2007, The University of Queensland, Australia                            

 


 

Expertise and Experience

Teaching

  1. CROP2222: Plant Diseases in Oman       
  2. CROP3001: Statistical Methods in Agriculture       
  3. CROP3522: Plant Pathology       
  4. CROP4111: Methods in Plant Pathology
  5. CROP4541: Plant Pathogen Interactions
  6. CROP4542: Diseases of Economic Crops
  7. CROP4546: Integrated pest and disease management
  8. CROP6011: Plant Fungal Infections

Supervision

PhD student supervision

 

Name

Grad Year

Type

Role

Short Title

 

 

 

 

 

 

14

Bushra Halo

*

PhD

Co-supervisor

Effect of microbes on growth of plants under heavy metals stress

13

Masood Al-Azri

*

PhD

Co-supervisor

Wheat foliar diseases in Oman

12

Aisha Al-Ghaithi

*

PhD

Supervisor

Apparent resistance in acid lime to phytoplasma

11

Ali Al-Subhi

*

PhD

Supervisor

Role of phytoplasma effectors

10

Elham Ahmed

*

PhD

Supervisor

Effect of farming system on fungal diversity

9

Nazia Hassan

*

PhD

Co-supervisor

Role of extremophillic bacteria and compost in instigating drought and salinity stress tolerance in selected crops

8

Zahra Al-Karusi

*

PhD

Co-supervisor

Resistance of bacteria to antibiotics

7

Hilal Al-Shamaki

*

PhD

Co-supervisor

Associations of fungi with termites

6

Mahmood Al-Ansari

*

PhD

Co-supervisor

Compost suppressiveness to root diseases

5

Adel Al-Shihi

2015

PhD

Co-supervisor

Resistance of Tomato to TYLCV

4

Qais Al-Maawali

2014

PhD

Co-supervisor

Management of vine decline of muskmelon using grafting

3

Issa Al-Mamari

2014

PhD

Co-Supervisor

Genetic diversity of fenugreek in Oman

2

Um-E-Ammara

2014

PhD

Supervisor

Genetically induced Resistance to TYLCV

1

Abdel-Rahman Al-Matroushi

2014

PhD

Supervisor

Diversity of TYLCV in Oman

*Current students

 

 

MSc student supervision (24)

 

Name

Grad Year

Type

Role

Short Title

24

Zainab Al-Balushi

*

MSc

Supervisor

Pythium diseases of cucumber

23

Mona Bani Auraba

*

MSc

Co-supervisor

Microbial and chemcial analysis of dates

22

Asma Al-Jaradi

*

MSc

Supervisor

Population structure of Rhizoctonia

21

Ahmed Al-Fahdi

*

MSc

Supervisor

Citrus greening

20

Hamad Al-Nadabi

*

MSc

Supervisor

Diversity of Alternaria

19

Mohammed Al-Jabri

*

MSc

Supervisor

Mango dieback in Oman

18

Karima Al-Amri

*

MSc

Supervisor

Diversity of Stemphyllium on tomato

17

Mohammed Al-Mazroui

2015

MSc

Co-supervisor

Chemical changes in lime infected by phytopalsma

16

Amna Al-Toobi

2015

MSc

Co-supervisor

Organic composts

15

Shaikha Al-Abadi

2015

MSc

Supervisor

Genetic diversity of Phytoplasma

14

Fatma Al-Ouweisi

2014

MSc

Supervisor

Trichoderma as a biocontrol agent

13

Safa Said Al-Mazroui

2014

MSc

Supervisor

Diversity of fungi in potting media

12

Ruqaya Al-Masoodi

2014

MSc

Supervisor

Population structure of F. solani in Oman

11

Maha Rashid Al-Rushadi

2013

MSc

Co-supervisor

TYLCV resistance

10

Zakiya Abdullah Al Alawi

2012

MSc

Supervisor

Pathogenic fungi associated with Omani native plants

9

Monira Mohammed Al-Shihi

2012

MSc

Co-supervisor

Biological soil crusts in Oman-1

8

Aisha Gharib Al-Ghaithi

2011

MSc

Supervisor

Characterization of gummosis and foot rot of citrus in Oman

7

Hanan Salem Al Moqbali

2011

MSc

Supervisor

Genetic diversity of acid lime in Oman and its effect on WBDL

6

Shamsa Abdullah Al-Hilali

2011

MSc

Supervisor

Characterization of citrus tristeza virus

5

Aadel Al-Shihi

2011

MSc

Co-supervisor

Studies on TYLCV in Oman

4

Ibtihal Juma Al-Raessi

2010

MSc

Co-supervisor

Molecular characterization of Sphaerotheca pannosa in Oman

3

Qais Al-Maawali

2008

MSc

Co-supervisor

Management of cucumber damping-off using grafting

2

Nassir Abdullah Al-Habsi

2007

MSc

Co-supervisor

P. aphanidermatum-salinity interactions

1

Saif Mohammed Al Kaabi

2007

MSc

Co-supervisor

Fruit rot of greenhouse cucumbers

*Current students

 

 

BSc Final Year Project Students Supervision (BSc = 41)

 

 

Name

Grad Year

Type

Role

Short Title

41

Maryam Al-Shaili

*

BSc

Supervisor

Fungicide resistance in Lasiodiplodia

40

Sultan Al-Masahali

2015

BSc

Supervisor

Potential biocontrol bacteria - 1

39

Husam Al-Hinai

2015

BSc

Supervisor

Diversity of phytoplasma

38

Manal Al-Alawi

2015

BSc

Supervisor

Stem and leaf diseases of wheat

37

Halima Al-Julandani

2014

BSc

Supervisor

Phenotypic diversity of Alternaria

36

Sara Al-Ansari

2014

BSc

Supervisor

Genetic diversity of Pythium

35

Dhuha Al-Dagairi

2014

BSc

Supervisor

Resistance of Pythium to hemexazol

34

Hanaa Al-Shibli

2014

BSc

Supervisor

Fungi associated with corn root rot

33

Gaith Rahsid Al-Ghafri

2014

BSc

Supervisor

Suppressiveness of compost to Pythium

32

Shaikha Al-Khamisi

2014

BSc

Supervisor

Date palm diseases

31

Hamood Mohd Al-Ghafri

2014

BSc

Supervisor

Suppressiveness of compost to Fusarium

30

Abdullah Al Mamari

2014

BSc

Supervisor

Transmission of phytoplasma

29

Majid Mohd Al-Ismaili

2014

BSc

Supervisor

Diversity of Fusarium solani

28

Anwaar Al-Omeiri

2014

BSc

Supervisor

Hosts of TYLCV

27

Thuraya Al-Abri

2014

BSc

Supervisor

Greening disease in nurseries

26

Mohammed Al-Dhuhori

2013

BSc

Supervisor

Citrus viroids-1

25

Mohammed Al-Mamari

2013

BSc

Supervisor

Trichoderma species in Oman

24

Mahmood Al-Farei

2013

BSc

Supervisor

Biological control of Pythium

23

Jawhara Al-Busaidi

2013

BSc

Supervisor

Effect of solarization on Pythium

22

Ahmed Al-Fahdi

2013

BSc

Supervisor

Diversity of pomegranates in Oman

21

Hammed Al-Nadabi

2013

BSc

Supervisor

Phylogeny of citrus

20

Khadija Al-Kharusi

2012

BSc

Supervisor

Fungal pathogens associated with seeds

19

Wafaa Al-Kindi

2012

BSc

Supervisor

Citrus greening

18

Halima Al-Zakwani

2012

BSc

Supervisor

Bacteria associated with potting media

17

Nawal Al Fahdi

2012

BSc

Supervisor

Fungal pathogens associated with gummosis of nursery seedlings

16

Zainab Al-Balushi

2011

BSc

Supervisor

Genetic diversity of P. aphanidermatum

15

Yousuf Al-Mahrezi

2011

BSc

Supervisor

Fruit rot and wilt of hydroponic cucumbers

14

Nadiya Al-Sheriani

2009

BSc

Supervisor

Management of mango wilt using fungicides

13

Ruqaya Al-Masoudi

2009

BSc

Supervisor

Tolerance of Pythium to salinity

12

Safa Al-Mazroui

2009

BSc

Supervisor

Fungal pathogens associated with citrus gummosis

11

Suad Al-Raqmi

2009

BSc

Supervisor

Fungal pathogens associated with root diseases of date palm seedlings

10

Raja Al-Mahrouqi

2009

BSc

Supervisor

Aetiology of cucumber wilt

9

Fatma Al-Hatmi

2009

BSc

Supervisor

Efficacy of metalaxyl in the management of Pythium

8

Muna Al-Shukaili

2009

BSc

Supervisor

Diseases of native Omani plants

7

Suad Al-Quraini

2009

BSc

Supervisor

Aetiology Fruit rot of cucumbers

6

Aamna Al-Jabri

2008

BSc

Supervisor

Fungi associated potting media and fertilizers

5

Aisha Al-Ghaithi

2008

BSc

Supervisor

Phenotypic diversity of P. aphanidermatum

4

Ahmed Al-Azizi

2004

BSc

Supervisor

The use of shredded date palm shoot bases in the management of damping-off

3

Al-Muotasim Al-Rawas

2004

BSc

Supervisor

Management of fungal pathogens using local products-2

2

Ahmed Al-Rawas

2004

BSc

Supervisor

Management of fungal pathogens using local products-1

1

Mohammed Al-Jabri

2001

BSc

Supervisor

The use of fish by-products in the management of damping-off



 

Research

Research Interests

(1) Addressing soil borne fungal diseases of vegetable crops by investigating etiology, population structure and management options.

(2) Investigating and managing disease complexes resulting in the decline of citrus in Oman.

 

Research projects - As Principal Investigator/Grant Holder


Year

Project

Fund by

Fund value

OMR

USD

1

2016-2018

Establishment of a culture collection of fungi in Oman, EG/AGR/CROP/16/01

TRC

126,300

328,393

2

2016-2018

Efficacy of localTrichodermaspecies as biocontrol agents ofPythiumandFusarium–induced damping-off and wilt diseases of cucurbits, IG/AGR/CROP/16/03

IG, SQU

9,000

23,400

3

2013-2014

Screening of viral, viral-like and bacterial diseases inCitrus,CR/AGR/CROP/13/01

Royal Court Affairs

4,428

11,513

4

2013-2016

Characterizing the nature of resistance to Witches’ broom disease in Omani lime, SR/AGR/CROP/13/01

His Majesty trust fund

82,300

213,980

5

2012-2015

Role of nurseries in transmission of citrus diseases, EG/AGR/CROP/12/01

VALE company-Brazil

30,000

78,000

6

2013-2015

Characterization of fungal pathogens associated with root rot & wilt of date palms in Oman, IG/AGR/CROP/13/01

IG, SQU

11,000

28,600

7

2012-2015

Studies on citrus diseases caused by CTV, Phytoplasma and viroids in Oman, EG/AGR/CROP/12/02

Vale company-Oman

47,500

123,500

8

2010-2013

Potential sources of soil-borne fungal pathogens into Oman SR/AGR/CROP/10/01

His Majesty Grant -Strategic Projects

95,600

248,560

9

2009-2011

Characterization of gummosis and foot/root rot diseases of Citrus in Oman IG/AGR/CROP/09/01

IG, SQU

11,600

30,160

417,728

1,086,106

 

 

 

 

Current projects as a Co-Principle Investigator or a Co-Investigator

 

Year

Project

Fund by

Fund value

OMR

USD

1

2016-2018

Tomato Genetics and Germplasm Enhancement for Improved Productivity in Oman, IG/AGR/CROP/16/xx

SQU-IG

10000

26,000

2

2016-2018

Biofouling in Oman waters and prevention of microbial and algal fouling using novel nanorod photocatalytic coatings, TRC, 2016

TRC

314,000

816,400

3

2015-2017

Antimicrobial and anti-fouling nano-coatings, IG/AGR/MSF/15/xx

SQU-IG

10000

26,000

4

2014-2016

Knowledge diffusion with respect to pesticide related decision-making processes within the farming community of Oman, IG/AGR/CROP/14/01

SQU-IG

5000

13,000

5

2012-2015

Mango wilt disease in Oman, EG/AGR/CROP/12/03

VALE Oman

35,000

91,000

6

2015-2017

Development of Controlled Environment Agriculture in Oman, TRC, 2015

TRC

296,570

771,000

7

2014-2016

Agroecology of date palm farms in Oman, IG/AGR/CROP/14/xx

IG

7,000

18,200

677,570

1,761,600

 

 

Publication

 


Recent Publications 2014-2018

2018 

  1. Xu, J., Zhang, Y., Zhang, P., Trivedi, P., Riera, N., Wang, Y., Liu, X., Fan, G., Tang, J., Coletta-Filho, H.D., Cubero, J., Deng, X., Ancona, V., Lu, Z., Zhong, B., Roper, M.C., Capote, N., Catara, V., Pietersen, G., Vernière, C., Al-Sadi, A.M., Li, L., Yang, F., Xu, X., Wang, J., Yang, H., Jin, T. and Wang, N. (2018).  The structure and function of the global citrus root-associated microbiome.  Nature Communications, 9: 4894 DOI: 10.1038/s41467-018-07343-2

  2. Sumaiya Al-Dughaishi, Sajeewa S. N. Maharachchikumbura & A. M. Al-Sadi (2018).  Bipolaris omanensis, a novel saprobic species of Bipolaris from Oman based on morphology and sequence data.  Phytotaxa, 385: 23-30, https://doi.org/10.11646/phytotaxa.385.1.3

  3. N. I. De Silva, S. S. N. Maharachchikumbura, D. J. Bhat, R. Phookamsak, A. M. Al-Sadi, S. Lumyong, K. D. Hyde (2018) Monochaetia sinensis sp. nov. from Yunnan Province in China.  Phytotaxa, 375: 59-69.  https://doi.org/10.11646/phytotaxa.375.1.2

  4. Asma J. Al-Jaradi, Issa H. Al-Mahmooli, Rhonda Janke, Sajeewa S.N. Maharachchikumbura, Nadiya A. Al-Saady, A. M. Al-Sadi (2018).  Isolation and identification of pathogenic fungi and oomycetes associated with beans and cowpea root diseases in Oman.  PeerJ, 6: e6064, DOI: 10.7717/peerj.6064.

  5. A. M. Al-Sadi and Elham A. Kazerooni (2018).  Illumina MiSeq analysis of fungal diversity in acid lime roots (Citrus aurantifolia) reveals dominance of Fusarium communities and the effect of locations on fungal taxa.  Scientific Reports, 8: 17388, DOI: 10.1038/s41598-018-35404-5

  6. Al-Nadabi H., Khan M., Al-Yahyai R.A., Al-Sadi A.M. (2018).  AFLP fingerprinting analysis of Citrus cultivars and wild accessions from Oman suggests the presence of six distinct cultivars. Agriculture (Poľnohospodárstvo), 64: 173–182.  DOI: 10.2478/agri-2018-0018

  7. S. Al-Hinai, A.M. Al-Sadi, S. Rauf, A. Al-Mamari, and N. Al-Saady (2018).  Genetic Analysis Indicates a Relationship of Cowpea (Vigna unguiculata (l.) walp.) Accessions from Oman to Cowpea in the Indian Subcontinent.  International Journal of Agriculture and Biology, 20: 2847-2852, DOI: 10.17957/IJAB/15.0844

  8. Amna Yaqoob Al-Rawahi, Issa Hashil Al-Mahmooli, A. M. Al-Sadi, Jamal Nasser Al-Sabahi, Velazhahan Rethinasamy (2018).  Toxin production by melon root rot fungus, Monosporascus cannonballusAustralasian Plant Pathology, 47: 543-546.  https://doi.org/10.1007/s13313-018-0589-1

  9. 9.S. S. N. Maharachchikumbura, S. Haituk , P. Pakdeeniti , A. M. Al-Sadi, Hongsanan S, Chomnunti P, Cheewangkoon R  (2018) Phaeosaccardinula coffeicola and Trichomerium chiangmaiensis, two new species of Chaetothyriales (Eurotiomycetes) from Thailand.  Mycosphere 9: 769-778.  Doi 10.5943/mycosphere/9/4/5

  10. 10.H.H. Al-Nadabi, S.S.N. Maharachchikumbura, H. Agrama, M. Al-Azri, A. Nasehi, A.M. Al-Sadi (2018).  Molecular characterization and pathogenicity of Alternaria species on wheat and date palms in Oman.  European Journal of Plant Pathology, 152: 3, 577-588, DOI: 10.1007/s10658-018-1550-4.

  11. 11.M. S. Alves, F. N. da Silva, D. S. P. S. F. Guimarães, C. E. Vital, P. M. P. Vidigal, I. Al-Mahmooli, A. M. Al-Sadi, C. M. Carvalho (2018).  Differential expression and phytohormone unbalance in Citrus aurantifolia plants during "Sudden decline of lime", a new phytoplasma disease of citrus. Tropical Plant Pathology, 43: 6, 520-532, https://doi.org/10.1007/s40858-018-0223-3

  12. 12.M. S. Alves, A. M. Al-Sadi, C. M. Carvalho (2018).  Selection of reference genes for quantitative PCR analysis in Citrus aurantifolia during phytoplasma infection.  Tropical Plant Pathology, 43: 5, 402-412, https://doi.org/10.1007/s40858-018-0224-2

  13. M. Shehbaz, S. Rauf, A. M. Al-Sadi, S. Nazir, S. Bano, M.M. Hussain, M. Shahzad (2018).  Introgression and Inheritance of Charcoal Rot (Macrophomina phaseolina) Resistance from Silver Sunflower (Helianthus argophyllus Torr. & A. Gray) into Cultivated Sunflower (Helianthus annuus L.).  Australasian Plant Pathology, 47: 413-420, https://doi.org/10.1007/s13313-018-0573-9

  14. S. S. N. Maharachchikumbura, Z-L Luo, H.Y. Su, A. M. Al-Sadi,  R. Cheewangkoon (2018).  Reticulascaceae hyphomycetes from submerged wood in Yunnan, China.  Phytotaxa, 348: 187-198, https://doi.org/10.11646/phytotaxa.348.3.2

  15. S. Huang, S. S.N. Maharachchikumbura, R. Jeewon, D. J. Bhat, R. Phookamsak, K. D. Hyde, A. M. Al-Sadi, J. Kang (2018).  Lecanicillium subprimulinum (Cordycipitaceae, Hypocreales), a novel species from Baoshan, Yunnan.  Phytotaxa, 348: 99-108, DOI: http://dx.doi.org/10.11646/phytotaxa.348.2.4

  16. A. A.  Al Shihi, P. Hanson, A. M. Al Sadi, R.  A. Al-Yahyai, R.W. Briddon, M. Deadman and M. S. Shahid (2018).  Evaluation of tomato inbred lines for resistance to the tomato yellow leaf curl disease complex in Oman.  Crop Protection, 110:91-98, https://doi.org/10.1016/j.cropro.2018.04.001 .

  17. M. S. Shahid, A. A.  Al-Shihi, A.M. Al-Sadi, R.W. Briddon (2018).  Identification of Tomato yellow leaf curl virus-IR and associated tomato leaf curl betasatellite infecting Common bean (Phaseolus vulgaris) in Oman.  Plant Disease, 102: 1864, https://doi.org/10.1094/PDIS-02-18-0327-PDN .

  18. A. Rehman, M. Farooq, A. Nawaz, A.M. Al-Sadi, K. Al-Hashmi, F. Nadeem, A. Ullah (2018).  Characterizing Bread Wheat Genotypes of Pakistani Origin for Grain Zinc Biofortification Potential.  Journal of the Science of Food and Agriculture, 98: 4824-4836, https://doi.org/10.1002/jsfa.9010 .

  19. Teena, M., A. Manickavasagan, A.M. Al-Sadi, R. Al-Yahyai, M.L. Deadman and A. Al-Ismaili (2018). Near infrared imaging to detect Aspergillus flavus infection in three varieties of dates. Engineering in Agriculture, Environment and Food, 11: 4, 169-177, https://doi.org/10.1016/j.eaef.2018.04.002.

  20. P. Donkersley, F.W. Silva, C.M. Carvalho, A.M. Al-Sadi, S.L. Elliot  (2018).  Biological, environmental and socioeconomic threats to citrus lime production. Journal of Plant Disease and Protection, 125:339-356 https://doi.org/10.1007/s41348-018-0160-x

  21. M. Abdelrahman, A. M. Al-Sadi, A. Pour-Aboughadareh , D. J. Burritt, L-S Phan Tran (2018).  Genome editing using CRISPR/Cas9-targeted mutagenesis: an opportunity for yield improvements of crop plants grown under environmental stresses.  Plant Physiology and Biochemistry, 131: 31-36 https://doi.org/10.1016/j.plaphy.2018.03.012

  22. A.R. Al Fahdi, A. Al-Mamari, M.S. Shahid, C.M. Carvalho, S.L. Elliot, A.M. Al-Sadi (2018).  Characterization of Huanglongbing disease associated with acid lime (Citrus aurantifolia Swingle) in Oman.  Journal of Plant Pathology, 100: 3, 419-427 https://doi.org/10.1007/s42161-018-0088-9 .

  23. A.G. Al-Ghaithi, A.M. Al-Subhi, I.H. Al-Mahmooli, A.M. Al-Sadi (2018).  Genetic analysis of ‘Candidatus Phytoplasma aurantifolia’ associated with witches’ broom disease on acid lime trees.  PeerJ, 6: e4480, DOI: 10.7717/peerj.4480.

  24. S. S. N. Maharachchikumbura, K. D. Hyde, R. H. Perera, A. M. Al-Sadi (2018).  Acrocordiella omanensis sp. nov. (Requienellaceae, Xylariales) from the Sultanate of Oman.  Phytotaxa, 338: 294-300; https://doi.org/10.11646/phytotaxa.338.3.7

  25. W Wakil, M Yasin, MA Qayyum, MU Ghazanfar, AM Al-Sadi, G Bedford, YJ Kwon (2018).  Resistance to commonly used insecticides and phosphine fumigant in red palm weevil, Rhynchophorus ferrugineus (Olivier) in Pakistan.  Plos One, 13: e0192628, https://doi.org/10.1371/journal.pone.0192628.

  26. Halo BA, Al-Yahyai RA and Al-Sadi AM (2018).  Aspergillus terreus inhibits growth and induces morphological abnormalities in Pythium aphanidermatum and suppresses Pythium-induced damping-off of cucumber.  Frontiers in Microbiology, 9: 95; doi: 10.3389/fmicb.2018.00095

  27. R. H. Perera, S. S.N. Maharachchikumbura, K. D. Hyde, D. J. Bhat, E. Camporesi, E.B. G. Jones, I. C. Senanayake, A. M. Al-Sadi, N. Saichana, J-K Liu & Z-Y Liu (2018).  An appendage-bearing coelomycete Pseudotruncatella arezzoensis gen. and sp. nov. (Amphisphaeriales genera incertae sedis) from Italy, with notes on Monochaetinula.  Phytotaxa, 338: 177-188; https://doi.org/10.11646/phytotaxa.338.2.2

  28. Al-Shihi A. A., Al-Sadi A. M., Deadman M., Briddon R.W. and Shahid M. S. (2018).  Identification of a distinct strain of Cotton leaf curl Gezira virus infecting tomato in Oman.  Journal of Phytopathology, 166: 199-205; DOI: 10.1111/jph.12676

  29. A. M. Al-Subhi, S. A. Hogenhout, R. A. Al-Yahyai, A. M. Al-Sadi (2018).  Detection, identification and molecular characterization of the 16SrII-D phytoplasmas infecting vegetable and field crops in Oman.  Plant Disease, 102: 576-588; https://doi.org/10.1094/PDIS-07-17-0935-RE

  30. MS Shahid, IH Al Mahmooli, AM Al-Sadi, RW Briddon (2018) Identification of Mungbean yellow mosaic Indian virus infecting cucumber in Oman.  Plant Disease, 102: 465; https://doi.org/10.1094/PDIS-09-17-1356-PDN

  31. J. Yang, S. S. N. Maharachchikumbura, J.-K. Liu, K. D. Hyde, E.B.G. Jones, A. M. Al-Sadi, Z.-Y. Liu (2018).  Pseudostanjehughesia aquitropica gen. et sp. nov. and Sporidesmium sensu lato species from freshwater habitats.  Mycological Progress, 17: 591-616 https://doi.org/10.1007/s11557-017-1339-1344

  32. Z. M. Al-Balushi, H. Agrama, I. H. Al-Mahmooli, S. S. N. Maharachchikumbura, A. M. Al-Sadi (2018).  Development of resistance to hymexazol among Pythium species in Cucumber’s greenhouses in Oman.  Plant Disease, 102: 202-208, https://doi.org/10.1094/PDIS-11-16-1680-RE.

2017 

  1. A. M. Al-Subhi, S. A. Hogenhout, R. A. Al-Yahyai, A. M. Al-Sadi (2017).  Classification of a New Phytoplasmas Subgroup 16SrII-W Associated with ‎Crotalaria Witches' Broom Diseases in Oman Based on Multigene Sequence ‎Analysis.  BMC Microbiology, 17: 221, DOI: 10.1186/s12866-017-1130-3.

  2. M. S. Alansari, M. R. Finckh, M. Deadman, A. M. Al-Sadi (2017).  First Report of Pythium arrhenomanes associated with Root Rot of Maize (Zea mays) in Oman.  Journal of Plant Pathology, 99: 806; DOI: 10.4454/jpp.v99i3.3968.

  3. M.K. Al-Jabri, M. Al-Shaili, M. Al-Hashmi, A. Nasehi, I.H. Al-Mahmooli and A.M. Al-Sadi (2018).  Characterization and evaluation of fungicide resistance among Lasiodiplodia theobromae isolates associated with mango dieback in Oman.  Journal of Plant Pathology, 99: 747-753, http://dx.doi.org/10.4454/jpp.v99i3.3959.

  4. H. Zhang,  W. Dong,  K. D. Hyde, S. S. N. Maharachchikumbura, S. Hongsanan, D. J. Bhat, A. M. Al-Sadi, D. Zhang (2017).  Towards a natural classification of Annulatascaceae-like taxa: introducing Atractosporales ord. nov. and six new families.  Fungal diversity, 85: 75-110.  DOI 10.1007/s13225-017-0387-z

  5. Al-Sadi A.M. (2017).  Impact of plant diseases on human health.  International Journal of Nutrition, Pharmacology, Neurological Diseases, 7: 21-22.

  6. I.C. Senanayake, P.W. Crous, J.Z. Groenewald, S.S.N. Maharachchikumbura, R. Jeewon, A.J.L. Phillips, J.D. Bhat, R.H. Perera, Q.R. Li, W.J. Li, N. Tangthirasunun, C. Norphanphoun, S.C. Karunarathna, E. Camporesi, I. Manawasighe, A.M. Al-Sadi, and K.D. Hyde (2017).  Families of Diaporthales based on morphological and phylogenetic evidence.  Studies in Mycology, 86: 217-296, DOI: 10.1016/j.simyco.2017.07.003

  7. A. M. Al-Sadi**, B. Al-Khatri, A. Nasehi, M. Al-Shihi, I. H. Al-Mahmooli and S. S. N. Maharachchikumbura (2017).  High fungal diversity and dominance by Ascomycota in dam reservoir soils of arid climates.  International Journal of Agriculture and Biology.  19: 682-688. DOI: 10.17957/IJAB/15.0328.

  8. E. Kazerooni, S.S. Maharachchikumbura, V. Rethinasamy, H. Al-Mahrouqi and A. M. Al-Sadi (2017).  Fungal diversity in tomato rhizosphere soil under conventional and desert farming ‎systems.  Frontiers in Microbiology, 8: 1462, doi: 10.3389/fmicb.2017.01462.

  9. Hussain, H., Al-Sadi, A.M., Schulz, B., Steinert, M., Green, I.R., Ahmed, I. (2017). A Fruitful Decade for Fungal Polyketide Metabolites from 2007 to 2016: Antimicrobial activity, Chemotaxonomy and Chemodiversity. Future Medicinal Chemistry, 9: 1631-1648, https://doi.org/10.4155/fmc-2017-002.

  10. Yong Wang, Shuang-Fei Ran, Sajeewa S. N. Maharachchikumbura, Abdullah M. Al-Sadi, Kevin D. Hyde, Hua-Lei Wang, Tao Wang, Yan-Xia Wang (2017).  A novel Pestalotiopsis species isolated from Bulbophyllum thouars in Guangxi Province, China.  Phytotaxa, 306: 96-100; http://dx.doi.org/10.11646/phytotaxa.306.1.9.

  11. Dayarathne MC, Maharachchikumbura SSN, Jones EBG, Goonasekara ID, Bulgakov TS, Al-Sadi AM, Hyde KD, Lumyong S and McKenzie EHC (2017).  Neophyllachora gen nov. (Phyllachorales), three new species of Phyllachora from Poaceae and resurrection of Polystigmataceae (Xylariales).  Mycosphere, 8: 1598-1625.  Doi 10.5943/mycosphere/8/10/2

  12. K. D. Hyde, S. S. N. Maharachchikumbura, S. Hongsanan, M. C. Samarakoon, R. Lücking, D. Pem, D. Harishchandra, R. Jeewon, R.-L. Zhao, J.-C. Xu, J.-K. Liu, A. M. Al-Sadi, A. H. Bahkali, A. M. Elgorban (2017).  The ranking of fungi: a tribute to David L. Hawksworth on his 70th birthday.  Fungal Diversity, 84: 1-23.  DOI 10.1007/s13225-017-0383-3.

  13. Hongsanan S, Maharachchikumbura SSN, Hyde KD, Samarakoon MC, Jeewon R, Zhao Q, Al-Sadi AM, Bahkali AH (2017) An updated phylogeny of Sordariomycetes based on phylogenetic and molecular clock evidence. Fungal Diversity, 84, 25-41.  DOI 10.1007/s13225-017-0384-2

  14. I. Al-Balushi, M. Bani Uraba, N. Guizani, M. Al-Khusaibi, A. M. Al-Sadi (2017).  Illumina MiSeq sequencing analysis of fungal diversity in stored dates.  BMC Microbiology, 17: 72, DOI: 10.1186/s12866-017-0985-7.

  15. M. Hussain, M. Farooq, A. Nawaz, A. M. Al-Sadi, Z. M. Solaiman, S.S. Alghamdi, U.E. Ammara, Y.S. Ok,  K.H.M. Siddique   (2017).  Biochar for Crop Production: Potential Benefits and Risks.  Journal of Soils and Sediments, 17 (1): 685-716, DOI: 10.1007/s11368-016-1360-2.

  16. A.G. Al-Ghaithi, A.M. Al-Sadi, M.S. Al-Hammadi, R.M. Al-Shariqi, R.A. Al-Yahyai, I.H. Al-Mahmooli, C.M. Carvalho, S.L. Elliot, S. Hogenhout (2017).  Expression of phytoplasma-induced witches’ broom disease symptoms in acid lime (Citrus aurantifolia) trees is affected by climatic conditions.  Plant Pathology, 66: 1380-1388, Doi: 10.1111/ppa.12683.

  17. Senanayake IC, Maharachchikumbura SSN, Jeewon R, Promputtha I, Al-Sadi AM, Camporesi E, Hyde KD (2017).  Morphophylogenetic study of Sydomiellaceae reveals several new genera.  Mycosphere 8 (1): 172-217.  Doi 10.5943/mycosphere/8/1/15

  18. Al-Shihi A, Ammara Um e, Amin I, Deadman ML, Al-Sadi AM (2017). Association of Tomato yellow leaf curl virus and Chili leaf curl virus with leaf curl disease of radish (Raphanus sativus) and the synergistic interaction on Nicotiana benthamiana.  International Journal of Agriculture and Biology, 19: 266-272.  DOI: 10.17957/IJAB/15.0273

  19. Muhammad S. Shahid, Rob W. Briddon, Abdullah M. Al-Sadi (2017) Identification of Mungbean yellow mosaic Indian virus associated with tomato leaf curl betasatellite infecting Phaseolus vulgaris in Oman.  Journal of Phytopathology, 165: 204-211; https://doi.org/10.1111/jph.12551.

  20. Shahid, M.S., Al-Sadi A.M., Rob W. Briddon (2017) First report of Chili leaf curl virus and associated betasatellite infecting watermelon (Citrullus lanatus) in Oman.  Plant Disease, 101: 1063.  http://dx.doi.org/10.1094/PDIS-02-17-0162-PDN.

  21. U.E. Ammara, A.M. Al-Sadi, A. Al-Shihi, I. Amin (2017).  Real-time qPCR assay for the TYLCV titer in relation to symptoms-based disease severity scales.  International Journal of Agriculture and Biology, 19 145-151.   DOI: 10.17957/IJAB/15.0256.

  22. N. I. De Silva, R. Phookamsak, S. S. N. Maharachchikumbura, K. M. Thambugala, D. J. Bhat, A.M. Al-Sadi, S. Lumyong, K. D. Hyde (2017). Monochaetia ilexae sp. nov. (Pestalotiopsidaceae) from Yunnan province in China.  Phytotaxa, 291 (2) 123-132, doi.org/10.11646/phytotaxa.291.2.3.

2016 

  1. S.S. N. Maharachchikumbura, P. Larignon, K.D. Hyde, A.M. Al-Sadi & Z-Y Liu (2016). Characterization of Neopestalotiopsis, Pestalotiopsis and Truncatella species associated with grapevine trunk diseases in France.  Phytopathologia Mediterranea, 55: 380-390, DOI: 10.14601/Phytopathol_Mediterr-18298.

  2. Al-Sadi AM (2016).  Variation in resistance to spot blotch and the aggressiveness of Bipolaris sorokiniana on barley and wheat cultivars.  Journal of Plant Pathology, 98: 97-103.  doi: 10.4454/JPP.V98I1.029

  3. R.B. Queiroz, P. Donkersley, F.N. Silva, I.H. Al-Mahmmoli, A.M. Al-Sadi, C.M. Carvalho, S.L. Elliot (2016) Invasive mutualisms between a plant pathogen and insect vectors in the Middle East and Brazil.  Royal Society Open Science, 3: 160557.  DOI: 10.1098/rsos.160557

  4. Perera RH, Maharachchikumbura SSN, Bhat JD, Al-Sadi AM, Liu JK, Hyde KD and Liu ZY (2016). New species of Thozetella and Chaetosphaeria and new records of Chaetosphaeria and Tainosphaeria from Thailand.  Mycosphere, 7 (9): 1301-1321.   Doi 10.5943/mycosphere/7/9/5

  5. Dayarathne MC, Maharachchikumbura SSN, Phookamsak R, Fryar SC,To-anun C,Jones EBG, Al-Sadi AM, Zelski SEand Hyde KD (2016).   Morpho-molecular characterizationand epitypification of Annulatascus velatisporus.  Mycosphere, 7 (9): 1389-1398.  Doi 0.5943/mycosphere/7/9/12

  6. Senanayake IC, Al-Sadi AM, Bhat JD, Camporesi E, Dissanayake AJ, Lumyong S, Maharachchikumbura SSN and Hyde KD (2016).  Phomatosporales ord. nov. and Phomatosporaceae fam. nov., to accommodate Lanspora, Phomatospora and Tenuimurus, gen. nov.  Mycosphere, 7: 628-641, DOI:  10.5943/mycosphere/7/5/8

  7. H.A. Aljohi, W. Liu, Q. Lin, Y. Zhao, J. Zeng, A. Alamer, I.O. Alanazi, A.O. Alawad, A.M. Al-Sadi, S. Hu, J. Yu, (2016).  Complete Sequence and Analysis of Coconut Palm (Cocos nucifera) Mitochondrial Genome.  Plos One, 11: e0163990.  DOI: 10.1371/journal.pone.0163990.

  8. K. Al-Amri, A. M. Al-Sadi, A. Al-Shihi, A. Nasehi, I. Al-Mahmooli, M. L. Deadman (2016).  Population structure of Stemphylium lycopersici associated with leaf spot of tomato in a single field.  SpringerPlus, 5: 1642.  DOI 10.1186/s40064-016-3324-9.

  9. A.M. Al-Sadi, H.A. Al-Zakwani, A. Nasehi, S.S. Al-Mazroui, and I.H. Al-Mahmooli.  (2016).  Analysis of bacterial communities associated with potting media.  SpringerPlus, 5: 74 DOI: 10.1186/s40064-016-1729-0

  10. J. Yang, S.S.N. Maharachchikumbura, D.J. Bhat, K.D. Hyde, E.H.C. McKenzie, E.B.G. Jones, A.M. Al-Sadi, S. Lumyong (2016).  Fuscosporellales, a new order of aquatic and trrestrial Hypocreomycetidae (Sordariomycetes).  Cryptogamie Mycologie, 37: 449-475. DOI: 10.7872/crym/v37.iss4.2016.449

  11. R.H. Perera, S.S.N. Maharachchikumbura, H. Ariyawansa, A.H. Bahkali, E.B.G. Jones , A.M. Al-Sadi, K.D. Hyde, Z.Y. Liu (2016).  Two new Pseudohalonectria species on beech cupules (Fagus sylvatica) and a new genus to accommodate P. suthepensisPhytotaxa, 278:115-131. http://dx.doi.org/10.11646/phytotaxa.278.2.2

  12. S. Y. Al-Abadi, A. M. Al-Sadi, M. Dickinson, M. S. Al-Hammadi, R. Al-Shariqi, R. A. Al-Yahyai, E. A. Kazerooni, A. Bertaccini (2016).  Population genetic analysis reveals a low level of genetic diversity of ‘Candidatus Phytoplasma aurantifolia’ causing witches’ broom disease in lime.  SpringerPlus, 5: 1701.

  13. S.S.N. Maharachchikumbura, A.M. Al-Sadi, M. Al-Kharousi, N.A. Al-Saady, K.D. Hyde (2016).  A checklist of fungi in Oman.  Phytotaxa, 273: 219-261. http://dx.doi.org/10.11646/phytotaxa.273.4.1

  14. I.T. Al-Maamari, M.M. Khan, A. Ali, A.M. Al-Sadi, N.A. Al-Saady, M. I. Waly (2016).  Diversity in phytochemical composition of Omani fenugreek (Trigonella foenum - graecum l.) accessions. Pakistan Journal of Agricultural Sciences, 53: 851-862. DOI: 10.21162/PAKJAS/16.5559.

  15. Tarcísio Visintin da Silva Galdino, M.D.; S. Kumar; L.S.S. Oliveira; A.C. Alfenas; L.G. Neven; A.M. Al‐Sadi; M. C. Picanço (2016).  Mapping global potential risk of Mango Sudden Decline Disease caused by Ceratocystis fimbriataPLOS One, 11: e0159450; https://doi.org/10.1371/journal.pone.0159450

  16. M. Teena, A. Manickavasagan, A.M. Al-Sadi, R. Al-Yahyai, M.L. Deadman, A. Al-Ismaili (2016).  RGB color imaging to detect Aspergillus flavus infection in dates.  Emirates Journal of Food and Agriculture, 28: 683-688; doi: 10.9755/ejfa.2016-01-070

  17. SSN Maharachchikumbura, KD Hyde, EBG Jones, EHC McKenzie, JD Bhat, MC Dayarathne, S-K Huang, C Norphanphoun, IC Senanayake, RH Perera, Q-J Shang, Y Xiao, MJ D’souza, S Hongsanan, RS Jayawardena, DA Daranagama, S Konta, ID Goonasekara, W-Y Zhuang, R Jeewon, AJL Phillips, MA Abdel-Wahab, AM Al-Sadi, AH Bahkali, S Boonmee, N Boonyuen, R Cheewangkoon, AJ Dissanayake, J Kang, Q-R Li, JK Liu, XZ Liu, Z-Y Liu, JJ Luangsa-ard, K-L Pang, R Phookamsak, I Promputtha, S Suetrong, M Stadler, T Wen, NN Wijayawardene (2016).  Families of Sordariomycetes.  Fungal diversity: 1-317, DOI: 10.1007%2Fs13225-016-0369-6

  18. A.G. Al-Ghaithi, M.A. Hanif, W.M. Al-Busaidi, A.M. Al-Sadi (2016).  Increased sodium and fluctuations in minerals in acid limes expressing witches' broom symptoms.  SpringerPlus, 5: 418, DOI: 10.1186/s40064-016-2049-0.

  19. E.A. Kazeeroni, A.M. Al-Sadi (2016). 454-Pyrosequencing reveals variable fungal diversity across farming systems.  Frontiers in Plant Science, 7: 314, doi: 10.3389/fpls.2016.00314.

  20. H.A. Ariyawansa, K.D. Hyde, K. Tanaka, S.S.N. Maharachchikumbura, A.M. Al-Sadi, A.M. Elgorban & Z.Y. Liu (2016).  Additions to Karst Fungi 3: Alpestrisphaeria jonesii from Guizhou Province, China. Phytotaxa, 284: 281-291; http://dx.doi.org/10.11646/phytotaxa.284.4.4

  21. H.A. Ariyawansa, K.D. Hyde, K.M. Thambugala, S.S.N. Maharachchikumbura, A.M. Al-Sadi & Z.Y. Liu (2016).  Additions to Karst Fungi 2: Alpestrisphaeria jonesii from Guizhou Province, China. Phytotaxa, 277: 255-265, http://dx.doi.org/10.11646/phytotaxa.277.3.3
  1. ZS Al-Kharousi, N Guizani, AM Al-Sadi, IM Al-Bulushi, B Shaharoona. (2016). Hiding in fresh fruits and vegetables: Opportunistic pathogens may cross geographical barriers.  International Journal of Microbiology, 2016: 4292417, DOI: 10.1155/2016/4292417.

  1. Rehman R, Hanif MS, Mushtaq Z, Al-Sadi AM (2016).  Biosynthesis of essential oils in aromatic plants: A Review.  Food Reviews International.  32: 117-160, DOI:10.1080/87559129.2015.1057841.

  2. Al-Musllami NH, Al-Adawi AO, Al Mawaali QS, Al-Kaabi SM, Al-Sadi AM, Al-Jabri MS, Al-Amri KN, Al-Nasseri MK, Al-Naabi AS, Al-Manthari AM, Al-Rabani MA (2016).  First report of association of Sclerotium cepivorum with white rot of garlic (Allium sativum) in Oman.  Journal of Plant Pathology, 98: 171, DOI: 10.4454/JPP.V98I1.023

  3. Al-Shihi AA, Al-Sadi AM, Al-Said FA, Ammara Um e, Deadman ML.  (2016).  Optimizing the duration of floating row cover period to minimize the incidence of tomato yellow leaf curl disease and maximize yield of tomato.  Annals of Applied Biology, 168: doi:10.1111/aab.12266

  4. Al-Mazroui SS, Al-Sadi AM (2016). 454 pyrosequencing and direct plating reveal high fungal diversity and dominance by saprophytic species in organic compostInternational Journal of Agriculture and Biology, 18: 98-102, DOI: 10.17957/IJAB/15.0068.

  5. S.S.N. Maharachchikumbura, S.P. Wu, K.D. Hyde, A.M. Al-Sadi and Z.Y. Liu (2016).  First report of sweet potato leaf spot caused by Neopestalotiopsis ellipsospora in Guizhou province, china.  Journal of Plant Pathology,98: 686. DOI: 10.4454/JPP.V98I3.073.

2015


  1. Al-Sadi AM, Al-Mazroui SS, Phillips A (2015). Evaluation of culture-based techniques and 454 pyrosequencing for the analysis of fungal diversity in potting media and organic fertilizers.  Journal of Applied Microbiology, 119: 500-509. DOI: 10.1111/jam.12854.

  2. Al-Sadi AM, Al-Oweisi F, Edwards S, Al-Nadabi H, Al-Fahdi A (2015).  Genetic analysis reveals diversity and genetic relationship among Trichoderma isolates from potting media, cultivated soil and uncultivated soil.  BMC Microbiology, 15: 147, DOI 10.1186/s12866-015-0483-8.

  3. Al-Sadi AM, Al-Fahdi A, Al-Yahyai R, Al-Ghaithi A, Al-Said F, Soleiman M. (2015).  Genetic analysis suggests a shared origin of Punica granatum cultivars in Oman with cultivars from the center of origin, Iran.  Genetic Resources and Crop Evolution, 62: 815-821, DOI 10.1007/s10722-015-0256-0.

  4. Al-Mazroui SS, Al-Sadi AM (2015). Highly variable fungal diversity and the occurrence of potentially plant pathogenic fungi in potting media, organic fertilizers and composts originating from 14 countriesJournal of Plant Pathology, 97: 529-534, doi: 10.4454/JPP.V97I3.033.

  5. Ammara Um e, Al-Ansari M, Al-Shihi A, Amin I, Mansoor S, Al-Maskari AY, Al-Sadi AM (2015).  Association of three begomoviruses and a betasatellite with leaf curl disease of basil in Oman.  Canadian Journal of Plant Pathology, 37: 506-513, DOI: 10.1080/07060661.2015.1105874.

  6. Oliveira L.S.S., Harrington T.C., Ferreira M.A., Damacena M.B., Al-Sadi A.M., Al-Mahmooli I.H.,  Alfenas A.C. (2015).  Species or genotypes? Critical analyses of four recently described species of the Ceratocystis wilt pathogen, C. fimbriata, on Mangifera indicaPhytopathology, 105: 1229-1244.,  DOI: 10.1094/PHYTO-03-15-0065-R

  7. Al-Sadi AM, Al-Masoodi RS, Al-Ismaili M, Al-Mahmooli IH. (2015).  Population structure and development of resistance to hymexazol among Fusarium solani populations from date palm, Citrus and cucumber.  Journal of Phytopathology, 163: 947-955, DOI: 10.1111/jph.12397

  8. Rauf S., Zaharieva M., Warburton M.L., Zhang P., Al-Sadi A.M., Khalil F., Kozak M., Tariq S. (2015).  Breaking wheat yield barriers requires integrated efforts in developing countries.  Journal of Integrative Agriculture, 14: 1447-1474, DOI: 10.1016/S2095-3119(15)61035-8.

  9. Ammara Um e, Mansoor S, Saeed M, Amin I, Briddon RW, Al-Sadi AM (2015).  RNA interference-based resistance in transgenic tomato plants against Tomato yellow leaf curl virus-Oman (TYLCV-OM) and its associated betasatellite.  Virology Journal, 12: 38. DOI: 10.1186/s12985-015-0263-y

  10. Al-Mahmooli IH, Al-Fahdi AR, Al-Sadi AM, Deadman ML (2015).  First report of root rot and crown necrosis caused by Pythium aphanidermatum on Phaseolus vulgaris in Oman. Plant Disease, 99: 419, https://doi.org/10.1094/PDIS-11-16-1671-PDN

  11. Ammara UE, Al-Shihi A, Amin I, Al-Sadi AM (2015).  First report of Tomato yellow leaf curl Albatinah virus (ToLCABV) and its associated betasatellite infecting papaya.  Plant Disease, 99: 421, https://doi.org/10.1094/PDIS-09-14-0912-PDN

  12. Al-Yahyai RA, Al-Sadi AM, Al-Said FA, Al-Kalbani Z, Carvalho CM, Elliot SL, Bertaccini A (2015).  Development and morphological changes in leaves and branches of acid lime (Citrus aurantifolia) affected by witches’ broom disease.  Phytopathologia Mediterranea, 54, 133-139. 

  13. DOI: 10.14601/Phytopathol_Mediterr-14746

2014

  1. Al-Sadi AM, Al-Ghaithi AG, Al-Fahdi N, Al-Yahyai R (2014).  Characterization and pathogenicity of fungal pathogens associated with root diseases of Citrus in Oman.  International Journal of Agriculture and Biology, 16: 371-376., http://www.fspublishers.org/published_papers/94276_..pdf

  2. Su HJ, Hogenhout SA, Al-Sadi AM, Kuo CH. (2014).  Complete Chloroplast Genome Sequence of Omani Lime (Citrus aurantiifolia) and Comparative Analysis within the Rosids.  PLoS ONE, 9: e113049.  doi:10.1371/journal.pone.0113049

  3. Al-Sadi AM, Al-Alawi ZA, Deadman ML, Patzelt A (2014). Etiology of four foliar and root diseases of wild plants in Oman.  Canadian Journal of Plant Pathology, 36: 517-522http://dx.doi.org/10.1080/07060661.2014.965219 

  4. da Silva FN, Queiroz RB, de Souza AN, Al-Sadi AM, de Siqueira DL, Elliot SL and Carvalho CM (2014).  First report of a 16SrII-C Phytoplasma associated with asymptomatic acid lime (Citrus aurantifolia) in Brazil.  Plant Disease, 98, 1577-1577.  https://doi.org/10.1094/PDIS-04-14-0431-PDN

  5. Harrington TC, Kaszmi MR, Al-Sadi AM, Ismail SI (2014).  Intraspecific and intragenomic variability of ITS rDNA sequences reveals taxonomic problems in Ceratocystis fimbriata sensu stricto.  Mycologia, 106: 224-242. https://doi.org/10.3852/13-189


  6.  
  7. Al-Maamari I, Al-Sadi AM, Al-Saady NA (2014).  Assessment of Genetic Diversity in Fenugreek (Trigonella foenum-graecum) in Oman.  International Journal of Agriculture and Biology, 16: 813-818.

  8. Ammara U, Al-Maskari AY, Khan AJ, Al-Sadi AM (2014).  Enhanced somatic embryogenesis and Agrobacterium-mediated transformation of three cultivars of tomato by exogeneous application of putrescine.  International Journal of Agriculture and Biology, 16: 81-88.