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A flavonoid-attracted Aeromonas spp enhances plant Na_H1 resistance without cry-for-help [Bacteria_RNA-seq]

ABSTRACT: Flavonoids are stress-inducible metabolites important for plant-microbe interactions. In contrast to their well-known function in initiating rhizobia nodulation in legumes, it is unclear whether and how flavonoids may contribute to plant stress resistance through affecting non-nodulating bacteria in the root microbiome. Here we show how flavonoids preferentially attracts Aeromonadaceae in Arabidopsis thaliana root microbiome and how flavonoid-dependent recruitment of an Aeromona spp. results in enhanced plant Na_H1 resistance.

ORGANISM(S): Aeromonas sp. H1

PROVIDER: GSE184873 | GEO | 2022/10/19

REPOSITORIES: GEO

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A flavonoid-attracted Aeromonas spp enhances plant drought resistance without cry-for-help [Plant_RNA-seq]

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Project description:Flavonoids are stress-inducible metabolites important for plant-microbe interactions. In contrast to their well-known function in initiating rhizobia nodulation in legumes, little is known about whether and how flavonoids may contribute to plant stress resistance through affecting non-nodulating bacteria. Here we show that flavonoids broadly contribute to the diversity of the Arabidopsis root microbiome and preferentially attract Aeromonadaceae, which included a cultivable Aeromonas sp. H1 that displayed flavonoid-induced chemotaxis with transcriptional enhancement of flagellum biogenesis and suppression of fumarate reduction for smooth swims. Strain H1 showed multiple plant-beneficial traits and enhanced plant dehydration resistance, which required flavonoids but not through a sudden "cry-for-help" upon stress. Strain H1 boosted dehydration-induced H2O2 accumulation in guard cells and stomatal closure, concomitant with synergistic induction of jasmonic acid-related regulators of plant dehydration resistance. These findings revealed a key role of flavonoids, and the underlying mechanism, in mediating plant-microbiome interactions including the bacteria-enhanced plant dehydration resistance.

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A flavonoid-attracted Aeromonas spp enhances plant drought resistance without cry-for-help [Plant_RNA-seq]

Project description:A flavonoid-attracted Aeromonas spp enhances plant drought resistance without cry-for-help [Plant_RNA-seq]

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A flavonoid-attracted Aeromonas spp enhances plant Na_H1 resistance without cry-for-help [Bacteria_RNA-seq]

Project description:A flavonoid-attracted Aeromonas spp enhances plant Na_H1 resistance without cry-for-help [Bacteria_RNA-seq]

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