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11 results on '"Galperin, Mariana"'

5. Migration and Selection Enforced Multiple Phenotypic and Genotypic Changes in the Population of Phytophthora infestans in Israel during the Last 36-Year Period

Author

Cohen, Yigal, Rubin, Avia E., Galperin, Mariana, Shamaba, Esti, Zig, Uri, and Cooke, David E. L.

Subjects
agricultural_sciences_agronomy, fungi, food and beverages
Abstract

Late blight caused by the oomycete pathogen Phytophthora infestans is a devastating disease of potato and tomato worldwide, including Israel. The population structure of this pathogen was monitored in potato and tomato fields in Israel during a 36-year period of 1983-2019. Isolates of the pathogen were tested for sensitivity to phenylamide fungicides, mating type, race structure, and genotype. The phenotypic and genotypic structure of the population from potato have changed greatly from one year to another, from one season to the next, within a season and within a single field. Major changes also occurred in the population collected from tomato crops. The mechanisms driving these multiple changes and the heterogeneous nature of the population in Israel are shown to derive from multiple migration events of the pathogen via seed tubers from Europe and from fitness-driven selection processes.

Published
2020

7. Abstracts of Presentations at the 19th Congress of the Israeli Phytopathological Society: February 16–17, 1998 ARO, the Volcani Center, Bet Dagan, Israel

Author

Raviv, M., Nir, I., Pinkas, Y., Shabi, E., Elisha, S., Maimon, Marcell, Szmulewich, Y., Freeman, S., Shabi, E., Nitzani, Y., Katan, Talma, Luzzati, Y., Tsror, Leah, Erlich, Orly, Hazanovsky, Marina, Tsror, Leah, Nachmias, A., Aharon, M., Erlich, Orly, Shtienberg, D., Vintal, H., Nitzani, Y., Brener, S., Retig, B., Rekah, Y., Katan, J., Shtienberg, D., Manisterski, J., Ben-Yehuda, Pnina, Eyal, Z., Eilam, Tamar, Anikster, Y., Shaharabani, Galit, Shtienberg, D., Elad, Y., Dinoor, A., Yedidia, I., Chet, I., Zutra, D., Erlich, Orly, Tsror, Leah, Hadas, Rivka, Kritzman, G., Ben-Yephet, Y., Reuven, Michal, Mor, I., Gera, A., Gerson, U., Taler, D., Cohen, Y., Bitton, Ruth, Cohen, Y., Cohen, Y., Baider, A., Reuveni, M., Benhamou, Nicolle, Kapulnik, Y., Ezrati, Smadar, Schuster, Sylvie, Eshel, A., Eyal, Z., Assaraf, M., Ginzburg, C., Yarden, O., Yatzkan, Enat, Katan, J., Korolev, Nadia, Katan, Talma, Jimenez-Diaz, R. M., Katan, J., Maor, R., Robinson, M., Puyesky, Mariella, Horwitz, B. A., Sharon, A., Pivonia, S., Kigel, J., Cohen, R., Katan, J., Tanne, Edna, Orenstein, Sigalit, Sela, I., Zehavi, Tirza, Klein, M., Gafny, R., Rubinson, E., Galiakparov, N., Piestun, D., Tanne, E., Sela, I., Cohen, J., Zeidan, M., Franck, A., Bekelman, E., Gera, A., Gotman, S., Zeidan, M., Cohen, J., Gera, A., Gera, A., Kritzman, Anat, Cohen, J., Bekelman, Elena, Raccah, B., Manor, H., Ganaim, N., Yunis, H., Kadouri, D., Gal-On, A., Peng, Y. -H., Wang, Y., Singer, Sima, Huet, H., Raccah, B., Edelstein, M., Cohen, R., Paris, H. S., Pivonia, S., Offenbach, Rivka, Pivonia, S., Levita, Rachel, Maduel, A., Isikson, A., Ucko, Orna, Cohen, R., Katan, J., Galperin, Mariana, Cohen, Y., Kenigsbuch, D., Shabi, E., Roberts, A. L., Crute, I. R., Reuveni, M., Harpaz, M., Reuveni, R., Oren, Y., Solel, Z., Kimchi, Miriam, Schneider, R., Ben-Nun, E., Shlevin, E., Dinoor, A., Shtienberg, D., Fallik, E., Grinberg, Shoshana, Alkalai, Sharon, Aharoni, Y., Copel, Azica, Rodov, V., Yekutieli, O., Regev, R., Wiseblum, A., Gamliel, A., Austerweil, Miriam, Benihes, Marina, Kritzman, G., Peretz-Alon, Y., Ucko, Orna, Choutka, C., Steiner, B., Grinshpun, I., Katan, J., Gamliel, A., Grinstein, A., Orion, D., Choutka, C., Steiner, B., Grinshpun, I., Gamliel, A., Grinstein, A., Guetsky, Ruth, Dinoor, A., Elad, Y., and Shtienberg, D.

Published
1998
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10. Seed transmission of Pseudoperonospora cubensis

Author

Cohen, Yigal, Rubin, Avia E., Galperin, Mariana, Ploch, Sebastian, Runge, Fabian, Thines, Marco, Cohen, Yigal, Rubin, Avia E., Galperin, Mariana, Ploch, Sebastian, Runge, Fabian, and Thines, Marco

Abstract

Pseudoperonospora cubensis, an obligate biotrophic oomycete causing devastating foliar disease in species of the Cucurbitaceae family, was never reported in seeds or transmitted by seeds. We now show that P. cubensis occurs in fruits and seeds of downy mildew-infected plants but not in fruits or seeds of healthy plants. About 6.7% of the fruits collected during 2012–2014 have developed downy mildew when homogenized and inoculated onto detached leaves and 0.9% of the seeds collected developed downy mildew when grown to the seedling stage. This is the first report showing that P. cubensis has become seed-transmitted in cucurbits. Species-specific PCR assays showed that P. cubensis occurs in ovaries, fruit seed cavity and seed embryos of cucurbits. We propose that international trade of fruits or seeds of cucurbits might be associated with the recent global change in the population structure of P. cubensis.

Published
2014

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