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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Surface signaling in pathogenesis
Year:
1995
Authors :
פליישמן, משה
;
.
Volume :
92
Co-Authors:
Kolattukudy, P.E., Neurobiotechnology Center, 206 Rightmire Hall, Ohio State University, 1060 Carmack Road, Columbus, OH 43210, United States
Rogers, L.M., Neurobiotechnology Center, 206 Rightmire Hall, Ohio State University, 1060 Carmack Road, Columbus, OH 43210, United States
Li, D., Neurobiotechnology Center, 206 Rightmire Hall, Ohio State University, 1060 Carmack Road, Columbus, OH 43210, United States
Hwang, C.-S., Neurobiotechnology Center, 206 Rightmire Hall, Ohio State University, 1060 Carmack Road, Columbus, OH 43210, United States
Flaishman, M.A., Neurobiotechnology Center, 206 Rightmire Hall, Ohio State University, 1060 Carmack Road, Columbus, OH 43210, United States
Facilitators :
From page:
4080
To page:
4087
(
Total pages:
8
)
Abstract:
Surface signaling plays a major role in fungal infection. Topographical features of the plant surface and chemicals on the surface can trigger germination of fungal spores and differentiation of the germ tubes into appressoria. Ethylene, the fruit-ripening hormone, triggers germination of conidia, branching of hyphae, and multiple appressoria formation in Colletotrichum, thus allowing fungi to time their infection to coincide with ripening of the host. Genes uniquely expressed during appressoria formation induced by topography and surface chemicals have been isolated. Disruption of some of them has been shown to decrease virulence on the hosts. Penetration of the cuticle by the fungus is assisted by fungal cutinase secreted at the penetration structure of the fungus. Disruption of cutinase gene in Fusarium solani pisi drastically decreased its virulence. Small amounts of cutinase carried by spores of virulent pathogens, upon contact with plant surface, release small amounts of cutin monomers that trigger cutinase gene expression. The promoter elements involved in this process in F. solani pisi were identified, and transcription factors that bind these elements were cloned. One of them, cutinase transcription factor 1, expressed in Escherichia coli, is phosphorylated. Several protein kinases from F. solani pisi were cloned. The kinase involved in phosphorylation of specific transcription factors and the precise role of phosphorylation in regulating cutinase gene transcription remain to be elucidated.
Note:
Related Files :
Fusarium
gene expression
germination
plant physiology
Plants
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר מתוך כינוס
;
.
Language:
אנגלית
Editors' remarks:
ID:
21000
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:40
You may also be interested in
Scientific Publication
Surface signaling in pathogenesis
92
Kolattukudy, P.E., Neurobiotechnology Center, 206 Rightmire Hall, Ohio State University, 1060 Carmack Road, Columbus, OH 43210, United States
Rogers, L.M., Neurobiotechnology Center, 206 Rightmire Hall, Ohio State University, 1060 Carmack Road, Columbus, OH 43210, United States
Li, D., Neurobiotechnology Center, 206 Rightmire Hall, Ohio State University, 1060 Carmack Road, Columbus, OH 43210, United States
Hwang, C.-S., Neurobiotechnology Center, 206 Rightmire Hall, Ohio State University, 1060 Carmack Road, Columbus, OH 43210, United States
Flaishman, M.A., Neurobiotechnology Center, 206 Rightmire Hall, Ohio State University, 1060 Carmack Road, Columbus, OH 43210, United States
Surface signaling in pathogenesis
Surface signaling plays a major role in fungal infection. Topographical features of the plant surface and chemicals on the surface can trigger germination of fungal spores and differentiation of the germ tubes into appressoria. Ethylene, the fruit-ripening hormone, triggers germination of conidia, branching of hyphae, and multiple appressoria formation in Colletotrichum, thus allowing fungi to time their infection to coincide with ripening of the host. Genes uniquely expressed during appressoria formation induced by topography and surface chemicals have been isolated. Disruption of some of them has been shown to decrease virulence on the hosts. Penetration of the cuticle by the fungus is assisted by fungal cutinase secreted at the penetration structure of the fungus. Disruption of cutinase gene in Fusarium solani pisi drastically decreased its virulence. Small amounts of cutinase carried by spores of virulent pathogens, upon contact with plant surface, release small amounts of cutin monomers that trigger cutinase gene expression. The promoter elements involved in this process in F. solani pisi were identified, and transcription factors that bind these elements were cloned. One of them, cutinase transcription factor 1, expressed in Escherichia coli, is phosphorylated. Several protein kinases from F. solani pisi were cloned. The kinase involved in phosphorylation of specific transcription factors and the precise role of phosphorylation in regulating cutinase gene transcription remain to be elucidated.
Scientific Publication
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