Research Interests

• Chitin biochemistry
• Genes coding for chitin synthase in insects
• Photostabilization of biocontrol agents
• Resistance and resistance management of insect pests
• Biochemical mechanisms of resistance in insect pests
• Biological clocks and circadian rhythms in insects

Curriculm Vita

Education:

• B.Sc. (1962) Faculty of Agriculture, the Hebrew University.
• M.Sc. (1964) Faculty of Agriculture, the Hebrew University.
• Ph.D. (1970) Dept. of Organic Chemistry, the Hebrew University.
• Postdoc (1971-1972) Dept. of Biological Sciences, Northwestern University, Evanston, Illinois.

Academic degrees and appointments:

• 1972 Lecturer -Tel Aviv University
• 2000-2003 Head Dept. of Entomology
• 2001 Chairperson of the Steering Committee for Biological and Chemical Residues in Animals and Animal Products, Ministry of Agriculture, Israel

The Hebrew University:

• 1978 Senior Lecturer
  1985 Associate Professor
  1990 Professor
• 1986-1989 Head, Plant Protection Studies
• 2000 Head, Dept. of Entomology
• 2004 The Morris Helen Mauerberger Chair in Agricultural Entomology

• University of California, Berkeley, California
  (Environmental Chemistry and Toxicology Laboratory).
  Research Associate - 1977-1979; 1983-1984; 1989; 1994-1995.
• 1998-1999 University of Melbourne, Melbourne, Australia
• 2004-2005 University of Sydney, Sydney, Australia.

Patents and awards:

• 1985 Israel Patent No 71377 (with Dr. L. Margulis and Dr. H. Rozen) Photostabilization of Pesticides.
• 1987 An award from the Pesticide Research and Development Fund for the research on protection of pesticides from photodegradation.
• 1993 Recipient of a fellowship by the Japanese Society for the Promotion of Science (JSPS).

Selected publications

Cohen, E. 1987. Chitin biochemistry: Synthesis and inhibition. Annu. Rev. Entomol. 32, 71-93.

Cohen, E., G. B. Quistad and J. E. Casida, 1966. Cytotoxicity of nimbolide, epoxyazadiradione and other limonoids from neem insecticide. Life Sci. 58, 1075-1081.

Cohen, E., T. Joseph and M. Wasserman-Golan, 2001. Photostabilization of biocontrol agents by berberine. Intern. J. Pest Manag. 47, 63-67.

Cohen.E., Joseph,T., Kahana,F. & Magdassi,S, 2003. Photostabilization of an entomopathogenic fungus using composite clay matrices. Photochem. Photobiol. 77,180-185.

 Reuveni, H. and Cohen, E. 2004. Evaluation of mechanisms of azinphos-  methyl resistance in the codling moth Cydia pomonella (L.). Arch. Insect  Biochem. Physiol. 57: 92-100.

Cohen, E. 2006.Pesticide-mediated homeostatic modulation in arthropods. Pestic Biochem Physiol. 85: 21-27.

Cohen, E. 2010. Chitin Biochemistry: Synthesis, Hydrolysis and Inhibition. Adv. Insect Physiol. 38, 5-74.

Cohen, E. 2012. Roles of aquaporins in osmoregulation, desiccation and cold hardiness in insects. Entomol. Ornithol Herpetol.http://dx.doi.org/10.4172/2161-0983.S1-001

Cohen, E. 2013. Target Receptors in the Control of Insect Pests: Part I. Adv. Insect Physiology (Cohen, E., Ed.). Volume 44, Academic Press, London. p. 355.

Cohen, E. 2013. Water homeostasis and osmoregulation as targets in the control of insect pests. In: Target Receptors in the Control of Insect Pests: Part I. Adv. Insect Physiology Volume 44 (Cohen, E., Ed.). Academic Press. London. pp. 1-61.

Cohen, E. 2014. Target Receptors in the Control of Insect Pests: Part II. Adv. Insect Physiology (Cohen, E., Ed.). Volume 46, Academic Press, London. p. 510.

Katzman-Ya’koboviotz, M., Buttler, M. T. and Cohen, E. 2016. Inhibition of α-glucosidase activity by N-deoxynojirimycin analogs in several insect phloem sap feeders. Insect Sci. 23: 59-67.

Rezende, L. Gustavo, Vargas, Helena Carolina Martins, Moussian B. and Cohen, E. 2016. Composite eggshell matrices: Chorionic layers and sub-chorionic cuticular envelopes. In: Extracellular Composite Matrices in Arthropods (Cohen, E., Moussian, B. Eds.). Springer International Publishing Switzerland. pp. 325-366.

Cohen, E. 2016. Extracellular Composite Matrices in Arthropods (Cohen, E., Moussian, B. Eds.). Springer International Publishing Switzerland. p. 712.

Selected Publications 
Representing Research Activities

• Cohen, E. and Casida, J. E. 1980. Properties of Tribolium gut chitin synthetase. Pestic. Biochem. Physiol. 13: 121-128.
• Cohen, E. and Casida, J. E. 1980. Inhibition of Tribolium gut chitin synthetase. Pestic. Biochem. Physiol. 13: 129-136.
• Cohen, E. 1982. In vitro chitin synthesis in an insect: formation and structure of microfibrils. Europ. J. Cell Biol. 16: 289-294.
• Cohen, E. and Casida, J. E. 1982. Properties and inhibition of insect integumental chitin synthetase. Pestic. Biochem. Physiol. 17: 301-306.
• Wool, D., Noiman, S., Manheim, O. and Cohen, E. 1982. Malathion resistance in Tribolium strains and their hybrids. Inheritance patterns and possible enzymatic mechanisms. Biochem. Genet. 20: 621-636.
• Cohen, E. and Casida, J. E. 1983. Chitin synthetase as a biochemical probe for insecticidal compounds. In Proceedings of the 5th International Congress of Pesticide Chemistry. Pergamon Press, Oxford, pp. 25-32.
• Cohen, E. and Casida, J. E. 1985. Chlorocyclohexane insecticides and sex attractants: Similar stereospecificity for neuroactivity and interaction with a housefly 35S-t-butylbicyclophosphorothionate binding site. Life Sci. 36: 1837-1842.
• Margulies, L., Rosen, H. and Cohen, E. 1985. Energy transfer at the surface of clays, a method for protecting pesticides from photodegradation. Nature 315: 658-659.
• Cohen, E. and Casida, J. E. 1986. Effects of insecticides and GABAergic agents on the housefly 35S-t-butylbicyclophosphorothionate binding site. Pestic. Biochem. Physiol. 25: 63-72.
• Cohen, E. 1986. Inhibition of chitin synthesis. In: Chitin in Nature and Technology (Muzzarelli, R. A. A., Jeuniaux, C. and Gooday, G. W. Eds.). pp. 139-145. Plenum Press, New York.
• Chet, I., Cohen, E. and Elster, I. 1986. The role of chitinase and chitin synthetase inhibitors in controlling plant pathogen fungi. In: Chitin in Nature and Technology (Muzzarelli, R. A. A., Jeuniaux, C. and Gooday, G. W. Eds.). pp. 237-240. Plenum Press, New York.
• Cohen, E. 1986. Glutathione-S-transferase activity and its induction in various strains of Tribolium castaneum. Ent. exp. appl. 41: 39-44.
• Cohen, E., Elster, I. and Chet, I. 1986. Properties and inhibition of Sclerotium rolfsii chitin synthetase. Pestic. Sci. 17: 175-182.
• Cohen, E. and Gerson, U. 1986. Isolation and purification of glutathione-S-transferase from the bulb mite Rhizoglyphus robini. Insect Biochem.16: 449-454.
• Cohen, E., Gamliel, A. and Katan. J. 1986. Glutathione and glutathione-S-transferase in fungi: Effect of pentachloronitro- benzene and 1-chloro-2,4-dinitrobenzene; purification and characterization of the transferase from Fusarium. Pestic. Biochem. Physiol. 26: 1-9.
• Margulies, L., Cohen, E. and Rosen, H. 1987. Photostabilization of bioresmethrin on clay surfaces. Pestic. Sci. 18: 79-87.
• Cohen, E. 1987. Chitin Biochemistry: Synthesis and Inhibition. Ann. Rev. Entomol. 32: 71-93.
• Cohen, E. 1987. Purification of glutathione-S-transferase from the flour beetle Tribolium castaneum. Comp. Biochem. Physiol. 88B: 675-681.
• Cohen, E. 1987. Interference with chitin biosynthesis in insects. InChitin and Benzoylphenyl Ureas (Wright, J. E. and Retnakaran, A. Eds) pp. 43-73. W. Junk Publishers, Dordrecht.
• Margulies, L., Rozen, H. and Cohen, E. 1988. Photostabilization of a nitromethylene heterocycle insecticide on the surface of montmorillonite. Clays and Clay Minerals. 36: 159-164.
• Cohen, E., Gamliel, A., and Katan, J. 1988. The fungitoxicity of chlorophenols to the pathogenic fungi, Fusarium oxysporum and Rhizoctonia solani: A structure-activity relationship study. Pestic. Sci.24: 139-146.
• Ruzo, L. O., Cohen. E. and Capua, S. 1988. Comparative metabolism of the pyrethroids bifenthrin and deltamethrin in the bulb mite Rhizoglyphus robini. J. Agric. Food Chem. 36: 1040-1043.
• Podoler, H., Steinberg, S., Rosen, D., Cohen, E. and El_Hamlauwi, M. 1988. Coexistence of Aphytis holoxanthus and Pteroptrix smithi on citrus - A combination of interspecific interactions and pesticide effect.Proceedings of the sixth International Citrus Congress (Goren, R. and Mendel, G. Eds.) pp. 1177-1185. Balaban Publishers, Philadelphia.
• Gamliel, A., Katan, J. and Cohen, E. 1989. Toxicity of chloro- nitrobenzenes to Fusarium oxysporum and Rhizoctonia solani as related to their structure. Phytoparasitica 17: 101-106.
• Gerson, U. and Cohen, E. 1989. Resurgence of spider mites (Acari: Tetranichidae) induced by synthetic pyrethroids. Exp. Appl. Acarol. 6:29-46.
• Cohen, E. 1990. Extracellular biopolymers as targets for pest control. In: Pesticides and Alternatives: Innovative Chemical and Biological Approaches to Pest Control (Casida, J. E. Ed.). pp. 23-32. Elsevier, Amsterdam.
• Capua, S., Cohen, E. and Gerson, U. 1990. Non-specific esterases in mites - a comparative study. Comp. Biochem. Physiol. 96C: 125-130.
• Capua, S., Cohen, E., Gerson, U. and Adato, I. 1990. Degradation of malathion and pyrethroids by the mites Rhizoglyphus robini and Tetranychus urticae. Comp. Biochem. Physiol. 96C: 427-432.
• Cohen, E. and Casida, J. E. 1990. Insect and fungal chitin synthetase activity: Specificity of lectins as enhancers and nucleoside peptides as inhibitors. Pestic. Biochem. Physiol. 37: 249-253.
• Cohen, E. 1991. Chitin biochemistry. In: The Physiology of the Insect Epidermis (Retnakaran, A. and Binnington K. C. Eds.). pp. 94-112. CSIRO Publications, Melbourne.
• Cohen, E., Rozen, H., Joseph, T., Braun, S. and Margulies L. 1991. Photodegradation of Bacillus thuringiensis Kurstaki from UV irradiation.J. Invertebr. Pathol. 57: 343-351.
• Capua, S., Cohen, E. and Gerson, U. 1991. Induction of aldrin epoxidation and glutathione S-transferase in the mite Rhizoglyphus robini. Ent. exp. appl. 59: 43-50.
• Gerson, E., Mozes-Koch, R. and Cohen, E. 1991. The mite Rhizoglyphus robini (Astigmata: Acaridae) as an experimental animal. Exp. Appl. Acarol. 12: 103-110.
• Cohen, E. and Teomi, S. 1992. Enzymes associated with defence against toxic oxygen species in PCNB-tolerant and sensitive soil fungi. J. Phytopathol. 135: 251-261.
• Cohen, E. 1992. Chitin polymerization and degradation as targets for pesticide action. Arch. Insect Biochem. Physiol. 22: 245-261.
• Margulies, L., Rozen, H., Stern, T., Rytwo, G., Rubin, B., Ruzo, L. O., Nir, S., and Cohen, E. 1992. Photostabilization of pesticides by clays and chromophores. Arch. Insect Biochem. Physiol. 22: 467-486.
• Cohen, E. 1993. Chitin synthase: An enzyme and a selective target for pesticide action. In: Pesticides/ Environment: Molecular Biological Approaches (Mitsui, T., Matsumura, F. and Yamaguchi, I. Eds.). pp. 101-113. Pesticide Science Society of Japan, Tokyo.
• Cohen, E., Podoler H. and El-Hamlawi, M. 1994. Delayed effects of malathion on hymenopteran parasites: The role of the scale cover of diaspidid insects. In: Advances in the Study of Ahytis (Hymenoptera: Aphelinidae) (Rosen, D. Ed.). pp. 183-190. Intercept, Andover.
• Cohen, E. and Teomi S. 1995. Enzymes associated with defence against reactive oxygen species in the bulb mite Rhizoglyphus robini. Comp. Biochem. Physiol. 111C: 435-440.
• Ringo, J., Jona, G., Rockwell, R., Segal, D. and Cohen, E. 1995. Genetic variation for resistance to chlorpyrifos in Drosophila melanogaster (Diptera: Drosophilidae) infesting grapes in Israel. J. Econ. Entomol. 88:1158-1163.
• Cohen E., Quistad, G. B. and Casida, J. E. 1996. Cytotoxicity of nimbolide, epoxyazadiradione and other limonoids from neem insecticide. Life Sci. 58: 1075- 1081.
• Cohen, E., Quistad, G. B., Jefferies, P. R. and Casida, J. E. 1996. Nimbolide is the principal cytotoxic component of neem-seed preparations. Pestic. Sci. 48: 135-140.
• Laidley, C. W. Cohen, E. and Casida, J. E. 1997. Protein phosphatase in neuroblastoma cells: [3H]cantharidine binding site in relation to cytotoxicity. J. Pharmacol. Exp. Therap. 280: 1152-1158.
• Cohen, E. and Quistad, G. B. 1998. Cytotoxic effects of arthropod venoms on various cultured cells. Toxicon. 36: 353-358.
• Levitin, E. and Cohen, E. 1998. The involvement of acetylcholinesterase in resistance of the California red scale Aonidiella aurantii to organophosphorus pesticides. Ent. Exp. Appl. 88: 115-121.
• Cohen, E. Joseph, T. and Wassermann-Golan, M. 2000. Photostabilization of biocontrol agents by berberine. Intern. J. Pest Manag. 47: 63-67.
• Cohen, E. 2001. Chitin synthesis and inhibition - a revisit. Pest Manag. Sci. 57: 946-950.
• Yerushalmi, N. and Cohen, E. 2002. Acetylcholinesterase of the California red scale Aonidiella aurantii Mask. Catalysis, inhibition and reactivation. Pest. Biochem. Physiol. 72: 133-141.
• Cohen, E., Joseph, T., Kahana, F. and Magdassi, S. 2003. Photostabilization of an entomopathogenic fungus using composite clay matrices. Photochem. Photobiol. 77: 180-185
• Reuveni, H. and Cohen, E. 2004. Evaluation of mechanisms of azinphos-methyl resistance in the codling moth Cydia pomonella (L.). Arch. Insect Biochem. Physiol. 57: 92-100.
• Reuveni, H. and Cohen, E. 2004. Resistance of the codling moth Cydia Pomonella (L.) (Lep., Totricidae) to pesticides in Israel. JEN 128: 645-651.
• Cohen, E., Joseph, T., Lapides, I. and Yariv, S. 2005. The adsorption of Berberine by montmorillonite and thermo-XED analysis of the organo-clay Complex. Clay Minerals 40: 223-232.
• Cohen, E. 2006. Pesticide-mediated homeostatic modulation in arthropods. Pestic. Biochem. Physiol. 85: 21-27.
• Reuveni, H. and Cohen, E. 2007. Toxicity of azinphos-methyl to various developmental stages of the codling moth Cydia pomonella (Lepidoptera: Tortricidae). Pest Manag. Sci. 63: 129-133.
• Cohen, E. 2009. Chitin. In: Encyclopedia of Insects (Resh, V. H. and Carde, R., Eds.). pp. 156-157.Elsevier, Amaterdam.
• Cohen, E. 2009. Fat Body. In: Encyclopedia of Insects (Resh, V. H. and Carde, R., Eds.). pp. 356-357.Elsevier, Amaterdam.
• Cohen, E. and Joseph, T. 2009. Photostabilization of Beauveria Bassiana conidia using anionic dyes. Appl. Clay Sci. 42: 569-574.
• Cohen, E. 2013. Target Receptors in the Control of Insect Pests: Part I.Adv. Insect Physiology (Cohen, E., Ed.). Volume 44, Academic Press, London. p. 355.
• Cohen, E. 2013. Water homeostasis and osmoregulation as targets in the control of insect pests. In: Target Receptors in the Control of Insect Pests: Part I. Adv. Insect Physiology Volume 44 (Cohen, E., Ed.). Academic Press. London. pp. 1-61.
• Cohen, E. 2014. Target Receptors in the Control of Insect Pests: Part II. Adv. Insect Physiology (Cohen, E., Ed.). Volume 46, Academic Press, London. p. 510.
• Katzman-Ya’koboviotz, M., Buttler, M. T. and Cohen, E. 2016. Inhibition of α-glucosidase activity by N-deoxynojirimycin analogs in several insect phloem sap feeders. Insect Sci. 23: 59-67.
• Rezende, L. Gustavo, Vargas, Helena Carolina Martins, Moussian B. and Cohen, E. 2016. Composite eggshell matrices: Chorionic layers and sub-chorionic cuticular envelopes. In: Extracellular Composite Matrices in Arthropods (Cohen, E., Moussian, B. Eds.). Springer International Publishing Switzerland. pp. 325-366.
• Cohen, E. 2016. Extracellular Composite Matrices in Arthropods (Cohen, E., Moussian, B. Eds.). Springer International Publishing Switzerland. p. 712.

Teaching

• Introduction to Pest Control
• Chemical Control of Pests
• Toxicology of Pesticides