Microbe-induced Drought Tolerance by ABA-mediated Root Architecture and Epigenetic reprogramming

Overview

Journal EMBO Rep

Specialty Molecular Biology

Date 2023 Jun 6

PMID 37278352

Authors

Khairiah M Alwutayd

Anamika A Rawat

Arsheed H Sheikh

Marilia Almeida-Trapp

Alaguraj Veluchamy

Rewaa Jalal

Michael Karampelias

Katja Froehlich

Waad Alzaed

Naheed Tabassum

Thayssa Rabelo Schley

Anton R Schaffner

Ihsanullah Daur

Maged M Saad

Heribert Hirt

Affiliations

Soon will be listed here.

Abstract

The use of beneficial microbes to mitigate drought stress tolerance of plants is of great potential albeit little understood. We show here that a root endophytic desert bacterium, Pseudomonas argentinensis strain SA190, enhances drought stress tolerance in Arabidopsis. Transcriptome and genetic analysis demonstrate that SA190-induced root morphogenesis and gene expression is mediated via the plant abscisic acid (ABA) pathway. Moreover, we demonstrate that SA190 primes the promoters of target genes in an epigenetic ABA-dependent manner. Application of SA190 priming on crops is demonstrated for alfalfa, showing enhanced performance under drought conditions. In summary, a single beneficial root bacterial strain can help plants to resist drought conditions.

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