生物
脱落酸
耐旱性
转录组
表观遗传学
重编程
基因
内生菌
H3K4me3
非生物胁迫
基因表达
植物
发起人
遗传学
作者
Khairiah Mubarak Alwutayd,Anamika R Rawat,Arsheed Hussain Sheikh,Marilia Almeida‐Trapp,Alaguraj Veluchamy,Rewaa S. Jalal,Michael Karampelias,Katja Froehlich,Waad Alzaed,Naheed Tabassum,Thayssa Rabelo Schley,Anton R. Schäffner,İhsanullah Daur,Maged M. Saad,Heribert Hirt
标识
DOI:10.1101/2023.01.03.522604
摘要
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 sp. 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 manner which is ABA-dependent. Application of the SA190 priming technology on crops is demonstrated for alfalfa in field trials, showing enhanced performance under desert agriculture conditions. In summary, a single beneficial root bacterial strain can help to perform agriculture under drought and water limiting conditions. Synopsis Beneficial root endophyte Pseudomonas argentinensis sp. SA190 confers drought tolerance in plants SA190 modulates the expression of genes under drought stress in an ABA-dependent manner SA190 primes genes via H3K4me3 histone mark enrichment SA190 alters host plant physiology by improving the plant water status SA190 enhances crop performance in open field conditions with limited irrigation
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