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A mitogen-activated protein kinase gene (MGV1) in Fusarium graminearum is required for female fertility, heterokaryon formation, and plant infection
Year:
2002
Authors :
Katan, Talma
;
.
Volume :
15
Co-Authors:

Hou, Z., Dept. of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States
Xue, C., Dept. of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States
Peng, Y., Dept. of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States
Katan, T., Department of Plant Pathology, Volcani Center, Bet Dagan 50250, Israel
Kistler, H.C., USDA-ARS, Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108, United States
Xu, J.-R., Dept. of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States

Facilitators :
From page:
1119
To page:
1127
(
Total pages:
9
)
Abstract:
Fusarium graminearum is an important pathogen of small grains and maize in many areas of the world. Infected grains are often contaminated with mycotoxins harmful to humans and animals. During the past decade, F. graminearum has caused several severe epidemics of head scab in wheat and barley. In order to understand molecular mechanisms regulating fungal development and pathogenicity in this pathogen, we isolated and characterized a MAP kinase gene, MGVI, which is highly homologous to the MPSI gene in Magnaporthe grisea. The MGV1 gene was dispensable for conidiation in F. graminearum but essential for female fertility during sexual reproduction. Vegetative growth of mgv1 deletion mutants was normal in liquid media but reduced on solid media. Mycelia of the mgv1 mutants had weak cell walls and were hypersensitive to cell wall degrading enzymes. Interestingly, the mgv1 mutants were self-incompatible when tested for heterokaryon formation, and their virulence was substantially reduced. The ability of the mutants to accumulate trichothecene mycotoxins on inoculated wheat was also greatly reduced. Our data suggest that MGV1 in F. graminearum is involved in multiple developmental processes related to sexual reproduction, plant infection, and cell wall integrity.
Note:
Related Files :
fungi
Fusarium
Genetics
molecular genetics
mutation
Triticum
Triticum aestivum
Zea mays
Show More
Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21104
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:41
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Scientific Publication
A mitogen-activated protein kinase gene (MGV1) in Fusarium graminearum is required for female fertility, heterokaryon formation, and plant infection
15

Hou, Z., Dept. of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States
Xue, C., Dept. of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States
Peng, Y., Dept. of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States
Katan, T., Department of Plant Pathology, Volcani Center, Bet Dagan 50250, Israel
Kistler, H.C., USDA-ARS, Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108, United States
Xu, J.-R., Dept. of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States

A mitogen-activated protein kinase gene (MGV1) in Fusarium graminearum is required for female fertility, heterokaryon formation, and plant infection
Fusarium graminearum is an important pathogen of small grains and maize in many areas of the world. Infected grains are often contaminated with mycotoxins harmful to humans and animals. During the past decade, F. graminearum has caused several severe epidemics of head scab in wheat and barley. In order to understand molecular mechanisms regulating fungal development and pathogenicity in this pathogen, we isolated and characterized a MAP kinase gene, MGVI, which is highly homologous to the MPSI gene in Magnaporthe grisea. The MGV1 gene was dispensable for conidiation in F. graminearum but essential for female fertility during sexual reproduction. Vegetative growth of mgv1 deletion mutants was normal in liquid media but reduced on solid media. Mycelia of the mgv1 mutants had weak cell walls and were hypersensitive to cell wall degrading enzymes. Interestingly, the mgv1 mutants were self-incompatible when tested for heterokaryon formation, and their virulence was substantially reduced. The ability of the mutants to accumulate trichothecene mycotoxins on inoculated wheat was also greatly reduced. Our data suggest that MGV1 in F. graminearum is involved in multiple developmental processes related to sexual reproduction, plant infection, and cell wall integrity.
Scientific Publication
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