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Title 

Transcriptional responses of the Bdtf1-deletion mutant to the phytoalexin brassinin in the necrotrophic fungus Alternaria brassicicola

Authors 

Y ChoR A OhmR DevappaH B LeeI V GrigorievBo Yeon KimJong Seog Ahn

Publisher 

MDPI

Issue Date 

2014

Citation 

Molecules, vol. 19, no. 8, pp. 10717-10732

Keywords 

BrassininGene expression profilesGEO Series Accession No. GSE59195Necrotrophic fungusPhytoalexinPhytoalexin detoxificationRNA-seq

Abstract 

Brassica species produce the antifungal indolyl compounds brassinin and its derivatives, during microbial infection. The fungal pathogen Alternaria brassicicola detoxifies brassinin and possibly its derivatives. This ability is an important property for the successful infection of brassicaceous plants. Previously, we identified a transcription factor, Bdtf1, essential for the detoxification of brassinin and full virulence. To discover genes that encode putative brassinin-digesting enzymes, we compared gene expression profiles between a mutant strain of the transcription factor and wild-type A. brassicicola under two different experimental conditions. A total of 170 and 388 genes were expressed at higher levels in the mutants than the wild type during the infection of host plants and saprophytic growth in the presence of brassinin, respectively. In contrast, 93 and 560 genes were expressed, respectively, at lower levels in the mutant than the wild type under the two conditions. Fifteen of these genes were expressed at lower levels in the mutant than in the wild type under both conditions. These genes were assumed to be important for the detoxification of brassinin and included Bdtf1 and 10 putative enzymes. This list of genes provides a resource for the discovery of enzyme-coding genes important in the chemical modification of brassinin.

ISSN 

1420-3049

Link 

http://dx.doi.org/10.3390/molecules190810717

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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