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שלח באימייל הדפס
Name: Omer Frenkel, Ph.D. (Researcher)
Units: Plant ProtectionPlant Pathology and Weed Research
Research Interests / Job description  
Tel:  03-9683529
Cell: 0506220379
Email:    omerf@volcani.agri.gov.il
Address:Department of Plant Pathology and Weed Research, ARO, The Volcani Center, POB 15159, Derech Hamacabim 68, Rishon Lezyion 7505101, Israel


Research Interests / Job description
Soil borne pathogens ecology

Population biology of plant pathogens

Plant diseases in wild vs. agricultural pathosystems

Current projects:

Effect of biochar amendments on the dynamics of soil-borne pathogens in greenhouses and nurseries

The epidemiology of pythium and fusarium diseases in greenhouses

The synergistic effect of multiple infections

Population biology of Erysiphe necator in grapes

Population biology of Botryosphaeria species in Israel

Lab members:
PhD students: Mrs Amit Philosophe, Mr Lior Gur, Mrs Maya Moshe

M.Sc students: Mr. Itay Keren, Mr. Adar Tabib, Ms Danielle Rockenstein, Ms Dor Azoulay, Mr. Yedidia Atun

Lab technicians: Mr. Gideon Mordochovich.

  Professional biography and academic background

1995-1998:     B.Sc. Biology & Environmental Sciences. The Hebrew University Jerusalem, Jerusalem.

1999-2002:  M.Sc. (Magna Cum Laude). Plant Pathology. The Hebrew University Jerusalem, Rehovot.

2003-2008: Ph.D.  Crop Sciences. The Hebrew University Jerusalem,   Rehovot.        

2008-2010: Post-doctoral Research associate, Plant Pathology, Cornell University, Ithaca,   NY, with Prof. Michael Milgroom.

2010-2011: Post-doctoral associate, Plant Pathology, ARO, The Volcani Center, with Prof, Dani Shtienberg.

2011-date: Research Scientist, Dep. of Plant Pathology and Weed Sciences, ARO, The Volcani Center. Israel.

2016-date: Promoted to stage B (Senior lecture), Research Scientist, Dep. of Plant Pathology and Weed Sciences, ARO, The Volcani Center. Israel.

Articles in Reviewed Journals

1.  Lichtenzveig, J., Gamliel, E., Frenkel, O., Michaelido, S., Abbo, S., Sherman, A. and Shtienberg, D. (2005). Distribution of mating types and diversity in virulence of Didymella rabiei in Israel. Eur. J. Plant Pathol. 113: 15-24.

2.  Frenkel, O., Shtienberg, D., Abbo, S. and Sherman, A. (2007). The sympatric Ascochyta complex of wild Cicer judaicum and domesticated chickpea. Plant Pathol. 56: 464-471.

3.  Frenkel, O., Sherman, A., Abbo, S. and Shtienberg, D. (2008). Differential aggressiveness among Didymella rabiei isolates from domesticated chickpea and its sympatric wild relative Cicer judaicum. Phytopathology 98: 600-608.

4.  Frenkel, O., Peever, TL., Chilvers, MI., Ozkilinc, H., Can, C., Abbo S., Shtienberg, D. and Sherman, A. (2010). Ecological Genetic Divergence of the Fungal Pathogen Didymella rabiei on Sympatric Wild and Domesticated Cicer spp. App. Environ. Microbiol. 76: 30-39

5.  Ozkilinc, H., Frenkel, O., Abbo, S., Eshed, R., Sherman, A., Shtienberg, D., Ophir, R. and Can, C. (2010). A comparative study of Turkish and Israeli populations of Didymella rabiei, the Ascochyta blight pathogen of chickpea. Plant Pathol. 59: 492-503.

6.  Frenkel, O., Yermiyahu, U., Forbes, GA., Fry, WE. and Shtienberg, D. (2010). Boron induces systemic acquired resistance against Phytophthora infestans. Plant Pathol. 59: 626-633.

7.  Frenkel, O., Brewer, MT. and Milgroom, MG. (2010). Variation in aggressiveness of Eryshiphe necator from different Vitis species and geographic origins in the eastern United States. Phytopathology 100: 1185-1193.

8.   Spanu,  PD., Abbott, JC., Burgis, TA., Ahmadinejad, N., Ametz, C., Amselem, J., Barton, GR., Benjdia, M., Bidzinski, P., Bindschedler, LV., Both, M., Brewer, MT., Brown, JKM., Butcher, SA., Cadle?Davidson, L., Cadle?Davidson, M., Collemare, J., Cramer, R., Fransisco, LR., Frenkel, O., Godfrey, D., Gurr, SJ., Harriman, J., Hoede, C., King, BC., Klages, S., Kleemann, J., Knoll, D., Koti, PS., Kreplak, J., Lebrun, MH., Lu, X., Maekawa, T., Mahanil, S., Milgroom, MG., Montana, G., Noir, S., O’Connell, RJ., Oberhänsli, S., Parlange, F., Pedersen, C., Quesneville, H., Reinhardt, R., Ridout, CJ., Rott, M., Sacristán, S., Schmidt, SM., Schön, M., Schulze?Lefert, P., Skamnioti, P., Soanes, DM., Sommer, H., Stüber, K., Takahara, H., Talbot, NJ., Thordal?Christensen, H., van Themaat, AL., Vigouroux, M., Weßling, R., Wicker, T. and Panstruga, R. (2010). Genome expansion and gene loss in powdery mildew fungi reveal functional tradeoffs in extreme parasitism.  Science 330: 1543-1546.

9    Frenkel, O., Portillo, I., Brewer, MT., Peros, JP., Cadle-Davidson, L and Milgroom, MG. (2011). Development of microsatellite markers from the transcriptome of Erysiphe necator for analyzing population structure in North America and Europe. Plant Pathol. 61:106-119.

10.  Ozkilinc, H., Frenkel, O., Shtienberg, D., Abbo, S., Sherman, A., Kahraman,  A. and Can, C. (2011). Aggressiveness of eight Didymella rabiei isolates from domesticated and wild chickpea native to Turkey and Israel, a case study. Eur. J. Plant Pathol. 131:529-537.

11.  Ramming, DW., Gabler, F., Smilanick, JL., Margosan, DA., Cadle Davidson, M., Barba, P., Mahanil, S., Frenkel, O., Milgroom, MG. and Cadle-Davidson, L.  (2012). Identification of race specific resistance in North American Vitis spp. limiting Erysiphe necator hyphal growth. Phytopathology 102: 83-93.

12.  Brewer, MT., Frenkel, O. and Milgroom, MG. (2012). Linkage disequilibrium and spatial aggregation of genotypes in sexually reproducing populations of Erysiphe necator. Phytopathology 102: 997-1005.

13.   Jaiswal, AK., Elad, Y., Graber, ER. and Frenkel, O. (2014). Rhizoctonia solani suppression and plant growth promotion in cucumber as affected by biochar pyrolysis temperature, feedstock and concentration. Soil Biol. Boichem. 69: 110-118.

14.  Sharabani, G., Manulis-Sasson, S., Chalupowitz, L., Borenstein, M., Shulhani,  R., Lofthaus, M., Sofer, M., Frenkel, O., Dror, O. and Shtienberg, D. (2014). Temperature at early stages of Clavibacter michiganensis subsp. michiganensis infection affects bacterial canker development and virulence-gene expression. Plant Pathol. 63: 1119-1129.

15.   Kolton, M., Frenkel, O., Elad, Y. and Cytrin, E. (2014). Potential role of flavobacterial gliding-motility/type IX secretion system complex in root colonization and plant defense. MPMI 27: 1005-1013.

16.   Frenkel, O., Cadle-Davidson, L*., Wilcox, W.F. and Milgroom, M.G. (2015). Mechanisms of resistance to an azole fungicide in the grapevine powdery mildew, Erysiphe necator. Phytopathology 105: 370-377.

17. Jaiswal, AK., Frenkel, O., Lew, B., Graber, E.R. and   Elad, Y. (2015). Non-monotonic influence of biochar   dose on bean seedling growth and susceptibility       to Rhizoctonia solani: The Shifted Rmax- Effect. Plant and Soil 395: 125-140.

18. Gur, Y. and Frenkel, O. (2015). First report of Leaf spot on blue lupin (Lupinus pilosus) caused by Pleiochaeta setosa. Plant disease 100:325.

19.   Frenkel, O., Bornestein, M., Shulhani, R., Sharabani, G., Sofer, M., Abu-Moch, F., Lofthaus, M.,  Manulis-Sasson, S. and Shtienberg, D. (2016). Secondary spread of Clavibacter michiganensis subsp. michiganensis in nurseries and the conditionsleading to infection of tomato seedlings. Eur. J. Plant Pathol. 144:569-579.

20.  Golani, M., Abbo, S., Sherman, A., Frenkel, O and    Shtienberg,   D. (2016). The temperature response  and aggressiveness of Peyronellaea pinodes isolates originating from wild and domesticated Pisum sp. in Israel. Phytopathology 106: 324-332.

21.  Golani, M., Frenkel, O., Borenstein, M., Shulhani, R., Abbo, S. and Shtienberg, D. (2016). Prevalence, development and significance of ascochyta blight caused by Didymella pinodes in Pisum elatius populations growing in natural ecosystems. Phytopathology 106: 333-341.

22   Jaiswal, AK., Elad, Y., Paudel, I., Graber, ER. Cytrin, E., and Frenkel, O. (2017). Linking the belowground microbial composition, diversity and activity to soilborne disease suppression and growth promotion of tomato amended with biochar. Scientific Reports 7. doi:10.1038/srep44382.

23.   Raviv, B., Aghajanyan, L., Granot, G., Makover, V., Frenkel, O., Gutterman, Y., and Grafi, G. (2017). The dead seed coat functions as a long-term storage for active hydrolytic enzymes. PLoS ONE 12(7): e0181102.

24.   Jaiswal, A.K., Elad, Y., Cytryn, E., Graber, E. R., and  Frenkel, O. (2018). Activating biochar by manipulating the bacterial and fungal microbiome through pre?conditioning. New Phytologist 219:363-377.

25.  Kumar, A., Tsechansky, L., Lew, B., Raveh, E., Frenkel, O. and Graber, E. R. (2018). Biochar alleviates phytotoxicity in Ficus elastica grown in Zn-contaminated soil. Sci. Total Environ. 618:188-198.

26.  Jaiswal, A.K., Frenkel, O., Tsechansky, L., Elad, Y. and Graber, E. R. (2018). Immobilization and deactivation of pathogenic enzymes and toxic metabolites by biochar: A possible mechanism involved in soilborne disease suppression. Soil Biol. Biochem. 121:59-66.


27.    Philosoph, A.M., Dombrovsky, A., Elad, Y., Jaiswal, A.K., Koren, A., Lachman, O. and Frenkel, O.** (2018). Combined infection with Cucumber green mottle mosaic virus and Pythium species causes extensive collapse in cucumber plants. Plant Dis. 102:753-759.



28.  Jaiswal, A. K., Graber, E. R., Elad, Y., and Frenkel, O**. (2019). Biochar as a management tool for soilborne diseases affecting early stage nursery seedling production. Crop Protection: 120: 34-42.


29   Philosoph, A.M., Dombrovsky, A., Elad, Y., Koren, A., and Frenkel, O. (2019). Insight into Late Wilting Disease of cucumber demonstrates the complexity of the phenomenon in fluctuating environments. 

            Plant Dis. 103: 2877-2883.


30  Meparishvili, G., Gur, L., Frenkel, O., Gorgiladze, L., Meparishvili, S., Muradashvili, M., Koiava, L., Dumbadze, R., Reuveni, M. and Jabnidze, R., 2019. First Report of Powdery Mildew Caused by Erysiphe corylacearum on Hazelnuts in Georgia. Plant Dis. In Press doi.org/10.1094/PDIS-05-19-1053-PDN

2.  Books and Invited Reviews

1.  Abbo, S., Frenkel, O., Sherman, A. and Shtienberg, D. (2007).

The sympatric Ascochyta pathosystems of near eastern legumes, a key for better understanding of pathogen biology. Eur. J. Plant Pathol. 119: 111-118.


2.  Graber, E.R., Frenkel, O., Jaiswal, A.KS. and Elad, Y. (2014).    How may biochar influence severity of diseases caused by soilborne pathogens? Carbon Manage. 5: 169-183. 

Frenkel, O., Jaiswal, A.K., Elad, Y., Lew, B.,Kammann, C., and Graber, E. R. (2017). The effect of biochar on plant diseases: what should we learn while designing biochar substrates? J. Environ. Engin. Landscape Manag. 25:105-113.





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