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The Arabidopsis Transcription Factor MYB12 Is a Flavonol-Specific Regulator of Phenylpropanoid Biosynthesis1
TLDR
The Arabidopsis (Arabidopsis thaliana) R2R3-MYB transcription factor MYB12 is identified as a flavonol-specific activator of flavonoid biosynthesis, and Quantitative real time reverse transcription-PCR using these mutant plants showed MYB 12 to be a transcriptional regulator of CHALCONE SYNTHASE and FLAVONOL SYnTHASE in planta. Expand
Pre- and Postinvasion Defenses Both Contribute to Nonhost Resistance in Arabidopsis
TLDR
It is reported that Arabidopsis PEN2 restricts pathogen entry of two ascomycete powdery mildew fungi that in nature colonize grass and pea species. Expand
Salicylic Acid–Independent ENHANCED DISEASE SUSCEPTIBILITY1 Signaling in Arabidopsis Immunity and Cell Death Is Regulated by the Monooxygenase FMO1 and the Nudix Hydrolase NUDT7[W]
TLDR
Two new immune regulators are defined through analysis of corresponding Arabidopsis loss-of-function insertion mutants, and it is found that SA antagonizes initiation of cell death and stunting of growth in nudt7 mutants. Expand
A Glucosinolate Metabolism Pathway in Living Plant Cells Mediates Broad-Spectrum Antifungal Defense
TLDR
It is proposed that reiterated enzymatic cycles, controlling the generation of toxic molecules and their detoxification, enable the recruitment of glucosinolates in defense responses. Expand
Tryptophan-Derived Metabolites Are Required for Antifungal Defense in the Arabidopsis mlo2 Mutant1[C][W][OA]
TLDR
The data strengthen the notion that powdery mildew resistance of mlo2 genotypes is based on the same defense execution machinery as innate antifungal immune responses that restrict the invasion of nonadapted fungal pathogens. Expand
Secretory Pathways in Plant Immune Responses1
TLDR
A large number of immune receptors in plants detect the presence of microbial pathogens and trigger defense responses to terminate or restrict pathogen growth, and the mechanisms behind these responses have received much attention. Expand
Metabolic Engineering in Nicotiana benthamiana Reveals Key Enzyme Functions in Arabidopsis Indole Glucosinolate Modification[W]
TLDR
All members of a small gene subfamily of cytochrome P450 monooxygenases, CYP81Fs, are capable of carrying out hydroxylation reactions of the glucosinolate indole ring, leading from I3M to 4-hydroxy-indol-3-yl-methyl and/or 1-hydroxylations or methylations, and that it is possible to produce indole glucos inolates in a noncruciferous plant. Expand
Tryptophan-derived secondary metabolites in Arabidopsis thaliana confer non-host resistance to necrotrophic Plectosphaerella cucumerina fungi.
TLDR
Findings imply differential contributions of antimicrobials in non-host resistance to necrotrophic and biotrophic pathogens. Expand
Non-self recognition, transcriptional reprogramming, and secondary metabolite accumulation during plant/pathogen interactions
TLDR
Comparing P. crispum and A. thaliana allows us to distinguish species-specific defense mechanisms from more universal responses, and furthermore provides general insights into the nature of the interactions. Expand
Plant-Microbe Interactions: Chemical Diversity in Plant Defense
TLDR
It is important not to be too reductionist in thinking when endeavoring to understand the forces and mechanisms that drive chemical diversification in plants, as some antimicrobial phytochemicals may not serve simply as chemical barriers but could also have functions in defense-related signaling processes. Expand
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