genome-wide characterization and expression analysis of gras gene family in pepper (capsicum annuum l.)

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ID: 230704
2018
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Abstract
Plant-specific GRAS transcription factors regulate various biological processes in plant growth, development and stress responses. However, this important gene family was not fully characterized in pepper (Capsicum annuum L.), an economically important vegetable crop. Here, a total of 50 CaGRAS members were identified in pepper genome and renamed by their respective chromosomal distribution. Genomic organization revealed that most CaGRAS genes (84%) have no intron. Phylogenetic analysis divided pepper CaGRAS members into 10 subfamilies, with each having distinct conserved domains and functions. For the expansion of the GRAS genes in pepper, segmental duplication contributed more than tandem duplication did. Gene expression analysis in various tissues demonstrated that most of CaGRAS genes exhibited a tissue- and development stage-specific expression pattern, uncovering their potential functions in pepper growth and development. Moreover, 21 CaGRAS genes were differentially expressed under cold, drought, salt and gibberellin acid (GA) treatments, indicating that they may implicated in plant response to abiotic stress. Notably, GA responsive cis-elements were detected in the promoter regions of the majority of CaGRAS genes, suggesting that CaGRAS may involve in signal cross-talking. The first comprehensive analysis of GRAS gene family in pepper genome by this study provide insights into understanding the GRAS-mediated regulation network, benefiting the genetic improvements in pepper and some other relative plants.
Reference Key
liu2018peerjgenome-wide Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Baoling Liu;Yan Sun;Jinai Xue;Xiaoyun Jia;Runzhi Li
Journal pediatrics
Year 2018
DOI
10.7717/peerj.4796
URL
https://peerj.com/articles/4796/
Keywords
gene expression duplication abiotic stress

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