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About Institutes Public Relations Technology Transfer Students\International Information Center (Library) Administration
שלח באימייל הדפס
Name: Roni Cohen, Ph.D. (Retiree)
Units: Plant ProtectionPlant Pathology and Weed Research
Research Interests / Job description  
Tel:  04-9539516
Cell: 050-6220016
Email:  ronico@volcani.agri.gov.il  ronico@int.gov.il
Office location:Newe Ya'ar reserach Center, Ramat Yishay
Research Interests / Job description
Plant pathologist
Foliage and soilborne diseases

1. Personal

Department of Plant Pathology and Weed Research
e-mail: ronico@volcani.agri.gov.il
web site: www.agri.gov.il.

Dates Description
1954 September, 15, Born in Tel Aviv, Israel

2. University Education and Additional Training

Dates Description
1975 - 1978 B.Sc., Agricultural Science, Hebrew University of Jerusalem; Rehovot, Israel. Major in plant protection
1979 - 1980 M.Sc, Plant Pathology at the Hebrew University of Jerusalem, Rehovot, Israel.
Title of thesis: Studies on the chemical and physical control of Dematophora necatrix Hartig., the causal agent of the white rot root disease in fruit trees.
Supervision: Prof. A. Sztejnberg
1981 - 1986 Ph.D., Plant Pathology, at the Hebrew University of Jerusalem, Rehovot, Israel.
Title of thesis: Mechanisms of resistance to Fusarium wilt in melon induced by dinitroaniline herbicides (emphasis was placed on changes in biochemical pathways of plant hormones - ethylene, auxin, gibberellin - induced by herbicide treatments, and on the formation of antifungal compounds).
Supervision: Prof. J. Katan and Dr. Norbert Lisker.
1989 - 1990 Postdoctoral position at Agriculture Canada, London, Ontario, Canada, with Dr. G. Lazarovits.
Research subjects: 1. Optimization of dinitroaniline herbicide application on tomato plants for inducing resistance to fusarium wilt. 2. Studying the effect of dinitroaniline herbicide in inducing resistance to bacterial diseases of tomato plants (Pseudomonas solanacearum - bacterial wilt, Pseudomonas syringae pv. tomato - bacterial speck and Clavibacter michiganense subsp. michiganese- bacterial canker). 3. Studying the role of glutathione in the mechanism of herbicide-induced resistance.
1997 - 1998 Sabbatical leave at the University of California, Riverside, with Dr. M. Stanghellini.
Research subject: The biology and control of sudden wilt of melons in southern California.
2009 short sabbatical, 4 month Sabbatical leave at the Michigan State University, East Lansing, with Dr. Rebecca Grumet.
Writing review, book chapter and 2 articles.
2014, Short sabbatical, 3.5 month Sabbatical leave at the Leibnitz institute, Grossberen, Germany, with Dr. Dietmar Schwartz.
Research subject: Cucurbita rootstocks and grafted melons: The contribution of rootstock parental lines to the performance of the hybrids

3. Positions Held and Academic Status

Dates Description
1997-1989 Researcher, employed by Peri Inc., Cucurbits Section, Department of Vegetable Crops, Institute of Field and Garden Crops, A.R.O., Newe Ya'ar Experiment Station.
1990-1995 Researcher (Grade C) Cucurbits Section, Department of Vegetable Crops, Institute of Field and Garden Crops, A.R.O.
1995 Promoted to Researcher, Grade B.
1999-2003 Deputy Director of Newe Ya'ar Research Center
2003 Promoted to Researcher, Grade A.
2011-2014 President of the Israeli Phytopathlogical Society.

Publication by research subjects
Herbicide induced resistance ( 8 articles)

1. Cohen, R., Riov, J., Lisker, N., and Katan, J. (1986).
Involvement of ethylene in herbicide induced resistance to Fusarium oxyporum f. sp.
melonis. Phytopathology 76: 1281-1285.

2. Cohen, R., Yarden, O., Riov, J., Lisker, N., and Katan, J. (1987).
Paclobutrazol and other plant growth retardant chemicals increase resistance of melon seedlings to fusarium wilt. Plant Pathol. 36: 558-564.

3. Nerson, H, Cohen, R., Edelstein, M., and Burger, Y. (1989).
Paclobutrazol - plant growth retardant for increasing yield and fruit quality in
muskmelon. J. Amer. Soc. Hort. Sci. 114: 762-766.

5. Cohen, R., Cuppels, D.A., Brammal, R.A., and Lazarovits, G. (1992).
Induction of resistances toward bacterial pathogens of tomato by dinitroanaline herbicides.
Phytopathology 82: 110-114.

6. Cohen, R., Blaier Bs. and Katan, J. (1992).
Chloroacetamide herbicides reduce incidence of fusarium wilt in muskmelon,
Crop Prot. 11: 181-185.

9. Bolter, C., Brammal, R.A., Cohen R. and Lazarovits, G. (1993)
Glutathione alteration in melon and tomato roots following treatment with chemicals which induce disease resistance to fusarium wilt.
Physiol. Mol. Plant Pathol. 42: 321-336.

14. Cohen, R., Blaier, B.s, Schaffer, A. A. and Katan, J. (1996)
Effect of acetochlor treatment of fusarium wilt and sugar content in melon
seedlings. Eur. J. Plant Pathol. 102: 45-50.

35. Lotan-Pompan, Maya, Cohen, R., Yarden, O., Portnoy, V., Burger, Y. and N. Katzir
Trifluralin herbicide-induced resistance of melon to fusarium wilt involves
expression of stress- and defense-related genes.
Mol. Plant Pathol. 8: 9-22.

Fusarium (5 articles, 1 book chapter)

4. Cohen, R., Katan, T., Katan, J., and Cohn, Ruth (1989).
Occurrence of Fusarium oxysporum f. sp. melonis race 1,2 on muskmelon in Israel.
Phytoparasitica 17: 319-322.

27. Burger, Y., Katzir, N., Tzuri, G., Portnoy, V., Saar, U., Shriber, S., Perl-
Treves, R. and Cohen, R. (2003).
Variation in the response of melon genotype to Fusarium oxysporum f.sp. melonis race 1 as determined by inoculation tests and by molecular markers.
Plant Pathol. 52: 204-211.

37. Cohen, R., Burger, Y., Horev, C., Saar, A. and Raviv, M. (2008).
Peat in the medium induces fusarium susceptibility in melons.
Plant Breed. 116:267-278.

48. Bordman, Y., Normantovich, M., Goldenberg, Z., Zvirin, Z. Kovalski, I., Stoovbun, N., Donniger, T., Bolger, A.M., Troadec, C., Bendahamane, A., Cohen, R., Katzir, N., Pitrat, M., Doginnont, C. and Perl-Treves, R. (2013).
Dual resistance of melon to Fusarium oxysporum race 0 and 2 and to Papaya ring spot virus is controlled by a pair of head-to head oriented NB-LRR genes of unusual architecture.
Mol. Plant. 6:235-238.

52. Cohen, R., Orgil, G., Burger, Y., Saar, U,. Elkabetz, M., Tadmor, Y., Edelstien, M. Belausov, E, Maymon, M., Freeman , S. and Yarden, O. (2015).
Differences in the responses of melon accessions to Fusarium crown rot and their colonization by Fusarium oxysporum f. sp. radicis cucumerinum.
Plant Pathol. 64:655-663.

1. Rabinowitch H. D. and Cohen, R. (2012).
Chapter 9. Genetics and breeding for resistance and grafting for protection against Fusarium oxysporum wilts. In: Gullino, M.L., Katan, J. and Garibaldi, A. (ed): Fusarium wilts of greenhouse vegetable and ornamental crops APS Press, St .Paul Minnesota USA (Book chapter).

Powdery mildew (11 articles)

7. Cohen, R., Leibovich, Gs., Shtienberg, D. and Paris, H.S. (1993).
Variability in the response of squash (Cucurbita pepo) to inoculation with Sphaerotheca fuligenea and methodology of breeding for resistance.
Plant Pathol. 42: 510-516.

8. Cohen. R., (1993).
A leaf disk assay for detection of resistance of melons to Sphaerotheca fuliginea race 1. Plant Dis. 77: 513-517.

10. Cohen, R. and Shtienberg, D. (1994).
Seed treatment for the control of Sphaeroteca fuliginea in muskmelon seedlings.
Plant Pathol. 43:316-120.

11. Marco, M., Ziv, O. and Cohen, R. (1994).
Suppression of powdery mildew in squash by applications of whitewash, clay and antitranspirant materials. Phytoparasitica 22: 19-29.

12. Leibovich, Gs., Elkind, Y, Dinoor, A. and Cohen, R. (1995).
Quantitative genetic analysis of Sphaerotheca fuliginea sporulation in Cucurbita pepo. Plant Breeding 114: 460-462.

15. Cohen, R., Shtienberg, D., and Edelstein, M. (1996).
Suppression of powdery mildew (Spaerotheca fuliginea) in cucumber by the
detergent Zohar LQ-215.
Eur. J. Plant Pathol. 102: 69-75.

16. Leibovich, G.s, Cohen, R. and Paris, H.S. (1996).
Shading of plants facilitates selection for powdery mildew resistance in squash.
Euphytica 90: 289-292.

17. Cohen, R., Katzir, N., Shreiber, S. and Greenberg, R.s (1996).
Occurrence of Sphaerotheca fuliginea race 3 on cucurbits in Israel.
Plant Dis. 80: 344.

22. Paris, H.S. and Cohen, R. (2002).
Powdery mildew-resistant summer squash hybrids having higher yields than their
susceptible, commercial counterparts. Euphytica 124:121-128.

31. Cohen, R., Burger, Y. and Katzir, N. (2004)
Monitoring physiological races of Podosphera xanthii (syn. Sphaerotheca fuliginea), the causal agent of powdery mildew in cucurbits: Factors affecting race identification and the importance for research and commerce.
Phytoparasitica 32:174-183.

28. Cohen, R., Hanan, A. and Paris, H.S. (2003).
Single-gene resistance to powdery mildew in zucchini squash (Cucurbita pepo)
Euphytica 130: 433-441.


Root rot diseases - Monosporascus and Macrophomina (10 articles, 1 Feature article and 1 review)

18. Cohen, R., Elkind, Y., Burger, Y., Offenbach, R. and Nerson, H. (1996).
Variation in the response of melon genotype to sudden wilt.
Euphytica 87: 91-95.

19. Pivonia, S.s, Cohen, R., Kafkafi, U., Ben- Ze'ev, IS. and Katan, J. (1997).
Sudden wilt of melons in southern Israel: fungal agents and relationship with
plant development. Plant Dis. 81: 1264-1268.

20. Cohen, R., Pivonia, S.s, Shtienberg, D., Edelstein, M., Raz, D.s, and Gerstl, Z. (1999).
The efficacy of fluazinam in suppression of Monosporascus cannonballus, the causal agent of vine decline of melons. Plant Dis. 83: 1137-1141.

21. Edelstien, M., Cohen, R., Shreiber, S., Pivonia, Ss. and Shtienberg, D. (1999).
Integrated management of sudden wilt in melons, caused by Monosporascus
cannonballus, using grafting and reduced rates of methyl bromide.
Plant Dis. 83: 1142-1145.

23. Pivonia, S.s, Cohen, R., Katan, J. and Kigel, J. (2002).
Effect of fruit load on the water balance of melon plants infected with
Monosporascus cannonballus.
Physiol. Mol. Plant Pathol 60:39-49.

25. Pivonia,. Ss., Cohen, R., Kigel, J. and Katan, J. (2002).
The effect of soil temperature on disease development in melon plants infected by Monosporascus cannonballus.
Plant Pathol. 51: 472-479.

26. Pivonia, Ss., Cohen, R., Levita, R. and Katan, J. ( 2002).
Improved solarization of containerized medium for the control of
Monosporacus collapse in melons. Crop Prot. 21: 907-912.

29. Pivonia, Ss., Cohen, R., Cohen, S., KIgel, J., Levita, R. and Katan. J. (2004).
Effect of irrigation on disease expression in melon plants infected with Monosporascus cannonballus.
Eur. J. Plant Pathol. 110:155-161.
40. Pivonia, S., Gerstl, Z. Maduel, A., Levita, R. and Cohen, R. (2010).
Management of Monosporascus sudden wilt of melon by soil application of
Eur. J. plant Pathol. 128:201-209.

45. Cohen, R., Omari, N., Porat, A. and Edelstein, M. (2012).
Managmnet of Macrophomina phaseolina in melons using grafting or fungicide soil application: Pathological, horticultural and economical aspects.
Crop Prot. 35:58-63.

1. Cohen, R., Pivonia, S., Burger, Y., Edelstien, M, Gamliel, A. and Katan, J. (2000).
Towards integrated management of Monosporascus wilt of melons in Israel.
Plant Dis. 84: 496-505. - Feature article

6. Cohen, R., Pivonia, S,. Crosby, K. and Martyn, R.D. (2012).
Advances in biology and management of Monosporascus vine decline and wilt of melons and other cucurbits. Hort. Rev. 39:77-120. Review

Grafting (8 articles, 1 feature article and 2 reviews)

24. Cohen, R., Horev, Cs., Burger, Y., Shriber, S., Hershenhorn, J., Katan, J. and Edelstein,
M. (2002).
Horticultural and pathological aspects of Fusarium wilt management using grafted melons. HortScience 37: 1069-1073.

30. Edelstein, M., Burger, Y., Horev, C., Porat, A., Meir, A. and Cohen R. (2004).
Assessing the effect of genetic and anatomic variation of Cucurbita
rootstocks on vigor, survival and yield of grafted melons.
J. Hort. Sci. Biotech. 79:370-374.

32. Edelstein, M. Ben-Hur, M., Cohen, R., Burger, Y. and Ravina, I. (2004).
Boron and salinity effects on grafted and non-grafted melon plants.
Plant Soil 269: 273-284.

33. Cohen, R., Burger, Y., Horev, C., Porat, A. and Edelstein, M. (2005).
Performance of Galia type melons grafted onto Cucurbita rootstock in Monosporascus cannonballus-infested and non-infested soils.
Ann. Appl. Biol. 146: 381-387.

36. Cohen, R., Eizenberg, H., Edelstein, M., Horev, C., Lande, T., Porat, A., Achdari, G. and
Hershenhorn, J. (2008).
Evaluation of herbicides for grafted watermelons and melons grown in the Arava
Valley of southern Israel.
Phytpparasitica 36:66-73.

38. Aloni, B,. Karni, L. Deventurero G., Levin Z., Cohen, R., Katzir, N. Lotan- Pompan, M., Edelstein, M. Aktas, H. Turhan, E., Joel, M.D., Horev, C, and Kapulmik, Y. (2008).
Physiological and biochemical changes at the rootstock-scion interface in graft combinations between and Cucurbita rootstocks and melon scion.
J. Hort. Sci. Biotech. 83:777-783.

50. Edelstein, M. Tyutyunik, J. Fallik, E. Meir, A. Tadmor, Y. and Cohen, R. (2014)
Horticultural evaluation of exotic watermelon germplasm as potential rootstocks.
Scientia Horticult. 165:196-202.

51. Cohen, R., Tyutyunik,J., Fallik, E., Oka, Y. Tadmor, Y. and Edelstein, M. (2014)
Phytopathological evaluation of exotic watermelon germplasm as a basis for rootstock breeding. Scientia Horticult. 165:203-210.

2. Cohen, R, Burger, Y., Horev, C., Koren, A. and Edelstein, M. (2007).
Introducing grafted cucurbits to modern agriculture: The Israeli experience.
Plant Dis. 91: 916-923. - Feature article.

3. Davis, A.R., Perkins-Veazie, P., Sakata, Y., Lopez-Galarza, S., Meroto, J.V.,Lee, S.G.,
Huh, Z.S., Miguel, A. King, S.R., Cohen, R. and Lee J.M. (2008).
Cucurbit Grafting. Critical Rev. in Plant Sci. 27:50-74. Review

5. Aloni, B., Edelstein, M., Cohen , R. and Karni, L. (2011).
Hormonal signaling in rootstock-scion interactions.
Scientia Horticulturae. 127:119-126. Review

Compost (4 articles)

34. Yogev, A., Raviv, M., Hadar, Y,. Cohen, R. and Katan, J. (2006).
Characterization of composts suppressive towards Fusarium pathogens and
diseases. Eur. J. Plant Pathol. 116:267-278.

39. Yogev, A., Raviv, M., Kritzman, G., Hadar, Y., Cohen, R. and Katan, J. (2009).
Suppression of bacterial canker of tomato by compost.
Crop Prot. 28: 93-103.

41. Yogev, A., Raviv, M., Hadar, Y. , Cohen, R., Wolf, S, Gil, L. and Katan, J. (2010).
Induced resistance as a component of compost suppressiveness.
Biol. Control 54: 46-51.

44. Yogev, A., Laor, Y., Katan, Y., Hadar, Y., Cohen, R., Medina, S. and Raviv, M. (2011).
Does organic farming increase soil suppression against Fusarium wilt of melon?
Organic Agric. 203-216.


Germplasm (4 articles and 1 review)

13. Cohen, R., Shreiber, S. and Nerson, H. (1995).
Response of melofon breeding lines to powdery mildew, downy mildew,
fusarium wilt and sudden wilt.
Plant Dis. 79: 616-619.

42. Burger, Y. Jonas-Levi A., Gurski, E. Horev, C., Saar, U. and Cohen, R. (2010)
Variation in anti-fungal activity in extracts from momordica plants.
Israeli J. Plant Sci. 58:1-7.

43. Edelstein, M., Oka, Yuji, Burger, Y., Eizenberg, H. and Cohen R. (2010).
Variation in the response of cucurbits to Meloidogyne incognita and M. javanica.
Israel J. Plant Sci. 58:77-84.

49. Paris, H. S., Cohen, R. Edelstein, M. Burger, Y. Ma‘oz, Y. and Schaffer, A.A.. (2013).
Origin and history of old cucurbit cultivars in Israel and the sources of several internationally important market types.
Genetic Resources and Crop Evolution 60:1629-1640.

4. Burger , Y., Paris, H. S., Cohen, R., Katzir, N. Tadmor, Y., Lewinsohn, E. and Schaffer, A.A. (2009). Genetic diversity of Cucumis melo.
Hort. Rev. 36: 165-191. Review


Other topics (2 articles)

46. Cohen, R., Anikster, Y., Vintal, H., Manisterski, Y. and Shtienberg, D. (2012).
Overwintering and epidemiology of Puccinia dracunculina, the causal agent of rust in open tarragon fields.
Plant Pathol. 62:41-48.

47. Pivonia S., de Cock, A.W.A.M., Levita, R., Etiel, E. and Cohen, R. (2012).
Low temperatures enhance winter wilt of pepper plants caused by Pythium sp. Phytoparasitica 40:525-531.



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