Transcriptomics

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Identifying the regulon of the Sinorhizobium meliloti JspA protease


ABSTRACT: Sinorhizobium meliloti establishes symbiotic relationship with compatible leguminous plants by inducing root nodule formation, colonizing such nodules, and fixing molecular nitrogen for the host in exchange for carbon compounds. This mutualistic process requires complex communication and tight regulation to allow yet constrain infection to specific tissues. Production of succinoglycan, or exopolysaccharide-I (EPS-I), enables S. meliloti to invade the root cortex via infection threads. A previous genetic screen identified jspA (SMc03872), encoding an extracytoplasmic protease, as a regulator of EPS-I production. To elucidate its molecular role, we performed transcriptome analyses of strains overexpressing wild-type or mutant alleles of jspA. We observed changes in gene expression suggesting that JspA contributes to symbiosis efficiency by modulating the critical ExoR-ExoS-ChvI signaling pathway.

ORGANISM(S): Medicago truncatula Sinorhizobium meliloti

PROVIDER: GSE155833 | GEO | 2023/05/10

REPOSITORIES: GEO

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