חיפוש מתקדם
Phytoparasitica
Dor, E., Department of Weed Research, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishai, Israel
Hershenhorn, J., Department of Weed Research, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishai, Israel
Andolfi, A., Dipartimento di Scienze del Suolo, della Pianta e dell'Ambiente, Università di Napoli Federico II, Portici, Italy
Cimmino, A., Dipartimento di Scienze del Suolo, della Pianta e dell'Ambiente, Università di Napoli Federico II, Portici, Italy
Evidente, A., Dipartimento di Scienze del Suolo, della Pianta e dell'Ambiente, Università di Napoli Federico II, Portici, Italy
A strain of Fusarium verticillioides was isolated from the tubercles of the parasitic weed Orobanche cumana in Israel. The pathogenicity was tested in polyethylene bags on O. cumana, O. crenata, O. aegyptiaca and O. ramosa and in pots on O. cumana and O. crenata. F. verticillioides was highly pathogenic to O. aegyptiaca, O. ramosa and O. cumana in the polyethylene bags. In pots, the fungus caused wilting and necrotic areas on flowering shoots of O. cumana, but did not cause disease symptoms on O. crenata. F. verticillioides grown on liquid Czapek growth medium produced a phytotoxic metabolite, which in leaf-puncture bioassay caused large necrotic areas on Orobanche shoots and on leaves of various crops. An extract of the fungal growth medium caused complete mortality of O. cumana and O. aegyptiaca seedlings in vitro. The toxic metabolite was isolated and identified by spectroscopic methods as fusaric acid. The identity of the compound was confirmed by conversion into the corresponding methyl ester, and by TLC comparison against authentic fusaric acid. No other phytotoxic metabolites could be detected in the growth medium extracts. © Springer Science & Business Media BV 2009.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Fusarium verticillioides as a new pathogen of the parasitic weed Orobanche spp.
37
Dor, E., Department of Weed Research, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishai, Israel
Hershenhorn, J., Department of Weed Research, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishai, Israel
Andolfi, A., Dipartimento di Scienze del Suolo, della Pianta e dell'Ambiente, Università di Napoli Federico II, Portici, Italy
Cimmino, A., Dipartimento di Scienze del Suolo, della Pianta e dell'Ambiente, Università di Napoli Federico II, Portici, Italy
Evidente, A., Dipartimento di Scienze del Suolo, della Pianta e dell'Ambiente, Università di Napoli Federico II, Portici, Italy
Fusarium verticillioides as a new pathogen of the parasitic weed Orobanche spp.
A strain of Fusarium verticillioides was isolated from the tubercles of the parasitic weed Orobanche cumana in Israel. The pathogenicity was tested in polyethylene bags on O. cumana, O. crenata, O. aegyptiaca and O. ramosa and in pots on O. cumana and O. crenata. F. verticillioides was highly pathogenic to O. aegyptiaca, O. ramosa and O. cumana in the polyethylene bags. In pots, the fungus caused wilting and necrotic areas on flowering shoots of O. cumana, but did not cause disease symptoms on O. crenata. F. verticillioides grown on liquid Czapek growth medium produced a phytotoxic metabolite, which in leaf-puncture bioassay caused large necrotic areas on Orobanche shoots and on leaves of various crops. An extract of the fungal growth medium caused complete mortality of O. cumana and O. aegyptiaca seedlings in vitro. The toxic metabolite was isolated and identified by spectroscopic methods as fusaric acid. The identity of the compound was confirmed by conversion into the corresponding methyl ester, and by TLC comparison against authentic fusaric acid. No other phytotoxic metabolites could be detected in the growth medium extracts. © Springer Science & Business Media BV 2009.
Scientific Publication
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