Genome-Wide Analysis of the Rhododendron AP2/ERF Gene Family: Identification and Expression Profiles in Response to Cold, Salt and Drought Stress
文献类型： 外文期刊
作者： Guo, Zhenhao 1 ; He, Lisi 1 ; Sun, Xiaobo 1 ; Li, Chang 1 ; Su, Jiale 1 ; Zhou, Huimin 1 ; Liu, Xiaoqing 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Leisure Agr, Nanjing 210014, Peoples R China
2.Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing 210014, Peoples R China
关键词： Rhododendron; transcription factor; genome-wide; abiotic stress; gene duplication; gene expression
期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）
ISSN：
年卷期： 2023 年 12 卷 5 期
页码：
收录情况： SCI
摘要： The AP2/ERF gene family is one of the most conserved and important transcription factor families mainly occurring in plants with various functions in regulating plant biological and physiological processes. However, little comprehensive research has been conducted on the AP2/ERF gene family in Rhododendron (specifically, Rhododendron simsii), an important ornamental plant. The existing whole-genome sequence of Rhododendron provided data to investigate the AP2/ERF genes in Rhododendron on a genome-wide scale. A total of 120 Rhododendron AP2/ERF genes were identified. The phylogenetic analysis showed that RsAP2 genes were classified into five main subfamilies, AP2, ERF, DREB, RAV and soloist. Cis-acting elements involving plant growth regulators, response to abiotic stress and MYB binding sites were detected in the upstream sequences of RsAP2 genes. A heatmap of RsAP2 gene expression levels showed that these genes had different expression patterns in the five developmental stages of Rhododendron flowers. Twenty RsAP2 genes were selected for quantitative RT-PCR experiments to clarify the expression level changes under cold, salt and drought stress treatments, and the results showed that most of the RsAP2 genes responded to these abiotic stresses. This study generated comprehensive information on the RsAP2 gene family and provides a theoretical basis for future genetic improvement.
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