Characterization of natural and induced variation in the LOV1 gene, a CC-NB-LRR gene conferring victorin sensitivity and disease susceptibility in Arabidopsis.

Characterization of natural and induced variation in the LOV1 gene, a CC-NB-LRR gene conferring victorin sensitivity and disease susceptibility in Arabidopsis. Research Abstract Details 

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Characterization of natural and induced variation in the LOV1 gene, a CC-NB-LRR gene conferring victorin sensitivity and disease susceptibility in Arabidopsis. Abstract Text:

Teresa A Sweat,Jennifer M Lorang,Erica G Bakker,Thomas J Wolpert,Teresa A Sweat,Jennifer M Lorang,Erica G Bakker,Thomas J Wolpert,

The fungus Cochliobolus victoriae, the causal agent of Victoria blight, produces a compound called victorin that is required for pathogenicity of the fungus. Victorin alone reproduces disease symptoms on sensitive plants. Victorin sensitivity and susceptibility to C. victoriae were originally described on oats but have since been identified on Arabidopsis thaliana. Victorin sensitivity and disease susceptibility in Arabidopsis are conferred by LOV1, a coiled-coil-nucleotide-binding-leucine-rich repeat (CC-NB-LRR) protein. We sequenced the LOV1 gene from 59 victorin-insensitive mutants and found that the spectrum of mutations causing LOV1 loss of function was similar to that found to cause loss of function of RPM1, a CC-NB-LRR resistance protein. Also, many of the mutated residues in LOV1 are in conserved motifs required for resistance protein function. These data indicate that LOV1 may have a mechanism of action similar to resistance proteins. Victorin sensitivity was found to be the prevalent phenotype in a survey of 30 Arabidopsis ecotypes, and we found very little genetic variation among LOV1 alleles. As selection would not be expected to preserve a functional LOV1 gene to confer victorin sensitivity and disease susceptibility, we propose that LOV1 may function as a resistance gene to a naturally-occurring pathogen of Arabidopsis.

Characterization of natural and induced variation in the LOV1 gene, a CC-NB-LRR gene conferring victorin sensitivity and disease susceptibility in Arabidopsis. Publishing Authors By Initials

TA Sweat,JM Lorang,EG Bakker,TJ Wolpert,TA Sweat,JM Lorang,EG Bakker,TJ Wolpert,

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Characterization of natural and induced variation in the LOV1 gene, a CC-NB-LRR gene conferring victorin sensitivity and disease susceptibility in Arabidopsis. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Molecular plant-microbe interactions : MPMI

VOLUME: 21

Page Numbers: 7-19

Journal Abbreviation: Mol. Plant Microbe Interact.

ISSN: 0894-0282

DAY: 6

MONTH: Jan

YEAR: 2008

Characterization of natural and induced variation in the LOV1 gene, a CC-NB-LRR gene conferring victorin sensitivity and disease susceptibility in Arabidopsis. Information

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LANGUAGE: eng

NlmUniqueID: 9107902

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Grant and Affiliation Information for Characterization of natural and induced variation in the LOV1 gene, a CC-NB-LRR gene conferring victorin sensitivity and disease susceptibility in Arabidopsis.

AFFILIATION: Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331, USA.

Country: United States

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MEDLINETA: Mol Plant Microbe Interact

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