Nonpathogenic leaf-colonizing bacteria elicit pathogen-like responses in a colonization density-dependent manner.

ABSTRACT: Leaves are colonized by a complex mix of microbes, termed the leaf microbiota. Even though the leaf microbiota is increasingly recognized as an integral part of plant life and health, our understanding of its interactions with the plant host is still limited. Here, mature, axenically grown Arabidopsis thaliana plants were spray inoculated with six diverse leaf-colonizing bacteria. The transcriptomic changes in leaves were tracked over time and significant changes in ethylene marker (ARL2) expression were observed only 2-4 days after spray inoculation. Whole-transcriptome sequencing revealed that 4 days after inoculation, leaf transcriptional changes to colonization by nonpathogenic and pathogenic bacteria differed in strength but not in the type of response. Inoculation of pl

SUBMITTER: Miebach M 

PROVIDER: S-EPMC10934995 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature