Identification of <i>CjSPL</i> gene family in Ziyang Xiangcheng rootstock and expression pattern analysis.

Hongxian Peng; Jieya Qiu; Qiuling Hui; Yuanyuan XU; Changpin Chun; Lili Ling; Li Cao; Yizhong HE; Liangzhi Peng; Xingzheng FU

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Identification of CjSPL gene family in Ziyang Xiangcheng rootstock and expression pattern analysis.

Author: Hongxian PENG ¹ ; Jieya QIU ¹ ; Qiuling HUI ¹ ; Yuanyuan XU ¹ ; Changpin CHUN ¹ ; Lili LING ¹ ; Li CAO ¹ ; Yizhong HE ¹ ; Liangzhi PENG ¹ ; Xingzheng FU ¹
Author Information

1. National Citrus Engineering Research Center, Citrus Research Institute, Southwest University, Chongqing 400712, China.
Publication Type:Journal Article
Keywords: SPL gene family; Ziyang Xiangcheng; abiotic stress; expression pattern
MeSH: Phylogeny; Transcription Factors/metabolism*; Gene Expression Regulation, Plant; Plant Proteins/metabolism*; Multigene Family; Stress, Physiological
From: Chinese Journal of Biotechnology 2023;39(2):625-639
CountryChina
Language:Chinese
Abstract: Squamosa promoter binding protein-like (SPL) family is a group of important transcription factors involved in the regulation of plant growth and development and the response to environmental stress, but there are few studies in perennial fruit trees such as citrus. In this study, Ziyang Xiangcheng (Citrus junos Sib.ex Tanaka), an important rootstock of Citrus, was used as the material for analysis. Based on plantTFDB transcription factor database and sweet orange genome database, 15 SPL family members were genome-widely identified and cloned from Ziyang Xiangcheng, and named CjSPL1-CjSPL15. Sequence analysis showed that the open reading frame (ORF) length of CjSPLs ranged from 393 bp to 2 865 bp, encoding 130-954 amino acids. Phylogenetic tree divided 15 CjSPLs into 9 subfamilies. Gene structure and conserved domain analysis predicted 20 different conserved motifs and SBP basic domains. Analysis of cis-acting promoter elements predicted 20 different promoter elements, including those related to plant growth and development, abiotic stress and secondary metabolites. The expression patterns of CjSPLs under drought, salt and low temperature stresses were analyzed by real-time fluorescence quantitative PCR (qRT-PCR), and many CjSPLs were significantly up-regulated after stress treatment. This study provides a reference for further study on the function of SPL family transcription factors in citrus and other fruit trees.