中国蔬菜Issue(3)：108-116,9.DOI:10.19928/j.cnki.1000-6346.2025.5056
辣椒果皮中细胞壁成分与XTH活性的差异分析
Difference Analysis of Cell Wall Components and XTH Activity in Capsicum Pericarp
摘要
Abstract
Fruit pericarp thickness in pepper is closely associated with cell wall components and xyloglucan endotransglucosylase/hydrolase(XTH)enzyme activity,yet relevant research remains insufficient.This study measured the contents of cellulose,hemicellulose,and pectin,as well as XTH activity,in pericarp tissues of five pepper inbred lines(three thick-pericarp pepper and two thin-pericarp pepper)at 10 and 35 days after pollination(DAP),and performed comparative and correlation analyses.The results showed that principal component analysis(PCA)indicated the first three principal components cumulatively explained 95.39％of the variance,revealing significant differences in metabolite accumulation patterns between the two pepper types.Quantitative analysis demonstrated that total pectin,cellulose,and hemicellulose contents were all higher in thin-pericarp peppers than in thick-pericarp peppers,and the contents of these three components were generally lower at 35 DAP compared to 10 DAP across the five pepper lines.Conversely,XTH activity was relatively higher in thick-pericarp peppers and was generally elevated at 35 DAP.Further correlation analysis revealed significant positive correlations among pectin,cellulose,and hemicellulose,while showing negative correlations with XTH activity.These findings indicate that cultivar type differences are important factors causing variations in cell wall components and XTH activity,providing a theoretical basis for improving pepper fruit quality through the regulation of cell wall homeostasis.关键词
辣椒/细胞壁成分/木葡聚糖内转糖基酶/水解酶/相关性分析Key words
pepper/cell wall components/xyloglucan endotransglucosylase/hydrolase(XTH)/correlation analysis引用本文复制引用
龚成胜,王雪艳,刘金兵,王述彬,潘宝贵,郭广君,高长洲,刁卫平..辣椒果皮中细胞壁成分与XTH活性的差异分析[J].中国蔬菜,2026,(3):108-116,9.基金项目
江苏省基础研究计划自然科学基金青年基金项目(BK20230751),现代农业产业技术体系建设专项资金项目(CARS-23-G42),衢州市科技计划项目(2024K062),江苏省高效园艺作物遗传改良重点实验室项目(ZD2022003) （BK20230751）
