江苏农业学报2026，Vol.42Issue(7)：1338-1348,11.DOI:10.3969/j.issn.1000-4440.2026.07.005
向日葵COBRA家族基因的全基因组鉴定与分析
Genome-wide identification and analysis of COBRA family genes in sun-flower
摘要
Abstract
COBRA proteins are a class of glycosyl-phosphatidylinositol(GPI)-anchored proteins that play important roles in plant cell wall biosynthesis,cell division,cell expansion,and defense responses.In this study,16 COBRA genes un-evenly distributed across 11 chromosomes were identified in the sunflower whole-genome.Based on bioinformatics analysis,this family was classified into two subfamilies,with significant differences in structural features,including gene structure,variations in the key conserved domain(cysteine-cysteine-valine-serine,CCVS),divergence in hydrophobicity/hydrophilicity patterns,and divergence in GPI-anchoring modification sites.Analysis of promoter cis-acting elements revealed that all mem-bers contained at least two types of cis-acting elements involved in stress response,hormone signaling,or developmental regulation.The protein-protein interaction prediction results showed that both HaCOBRA10 and HaCOBRA14 interacted with two cellulose synthases(CE-SA4,CESA8)and two glycosyltransferases(IRX3,IRX9).Tissue-specific expression and stress response analyses sug-gested that genes in this family may exhibit functional diver-sity in growth,development,and stress adaptation.This study provides new targets for research on cell wall formation mechanism and stress resistance breeding in sunflower,and lays a theoretical foundation for further investigation into the biological functions of COBRA proteins in plants.关键词
向日葵/COBRA蛋白/纤维素/细胞壁Key words
sunflower/COBRA protein/cellulose/cell wall分类
农业科技引用本文复制引用
任昂彦,陈涛,李晓莎,贺江,杨华,高进,刘爱萍,陈环宇,戚永奎..向日葵COBRA家族基因的全基因组鉴定与分析[J].江苏农业学报,2026,42(7):1338-1348,11.基金项目
江苏省盐城市应用基础研究计划项目(YCBK2025063、YCBK2025071) （YCBK2025063、YCBK2025071）
农业农村部沿海盐碱地农业科学观测实验站开放课题(YHS202105、YHS202306) （YHS202105、YHS202306）
江苏省农业科技自主创新基金项目[CX(23)1040] （23）
江苏省基础研究计划青年基金项目(BK20240495) （BK20240495）
