Genome-wide transcriptional adaptation to salt stress in Populus

• DOI: 10.1186/s12870-019-1952-2
• Publication Date: 2019-08-20T08:03:22Z
• Authors: Jin-Gui Liu; Xiao Han; Tong Yang; Wen-Hui Cui; Ai-Min Wu; Chun-Xiang Fu; Bai-Chen Wang; Li-Jun Liu
• Keywords: Gene module; 0301 basic medicine; 2. Zero hunger; Transcription, Genetic; Sequence Analysis, RNA; Botany; Abiotic stress; Adaptation, Physiological; Salt Stress; Trees; 03 medical and health sciences; Gene Ontology; Phenotype; Populus; Gene Expression Regulation, Plant; RNA, Plant; QK1-989; Perennial plants; Gene Regulatory Networks; Adaptation; Transcriptome; Genome, Plant; Research Article

Adaptation to abiotic stresses is crucial for the survival of perennial plants in a natural environment. However, very little known about underlying mechanisms. Here, we adopted liquid culture system investigate plant adaptation repeated salt stress Populus trees. We first evaluated phenotypic responses and found that exhibit better tolerance after pre-treatment stress. Time-course RNA sequencing (RNA-seq) was then performed profile changes gene expression over 12 h treatments. Analysis differentially expressed genes (DEGs) indicated significant transcriptional reprogramming treatment occurred. Clustering analysis identified two modules co-expressed were potentially critical adaptation, one key module response general. Gene Ontology (GO) enrichment pathways including hormone signaling, cell wall biosynthesis modification, negative regulation growth, epigenetic be highly enriched these modules. This study illustrates trees stress, revealing novel which are responding adapting