热胁迫下莴苣资源的多酚含量和耐热性呈正相关  

The Positive Correlation between Polyphenols and Heat Tolerance inLettuce under Heat Stress

作　　者：杨晓 火国涛 贺淑萍 葛国军[2] 杜莉 杨涛[1,2] 马天 韩颖颖 魏仕伟[2] Yang Xiao;Huo Guotao;He Shuping;Ge Guojun;Du Li;Yang Tao;Ma Tian;Han Yingying(Wei Shiwei 21 University of Shanghai for Science and Technology,Shanghai,200093;Shanghai Agrobiological Gene Center,Shanghai,201106;Shanghai Haofeng Fruit and Vegetable Professional Cooperative,Shanghai,201516)

机构地区：[1]上海理工大学,上海200093 [2]上海市农业生物基因中心,上海201106 [3]上海浩丰果蔬专业合作社,上海201516

出　　处：《分子植物育种》2024年第16期5383-5394,共12页Molecular Plant Breeding

基　　金：上海市科技兴农重点攻关项目(2020-02-08-00-08-F01459);上海市科技支撑项目(19391900600);国家作物种质资源库(上海分库)运行服务(NCGRC-2021-21)共同资助。

摘　　要：热胁迫是威胁莴苣生产的重要因素之一,莴苣中的多酚在莴苣响应热胁迫过程中起着重要的作用。通过对热胁迫下254份莴苣资源的多酚含量与热害指数进行鉴定,结果表明,在野生类型中多酚含量最高,结球莴苣中多酚含量最低;莴笋类型的热害指数最高,结球和油麦菜次之,而野生类型中热害指数最低。通过相关性分析,多酚含量和热害指数呈负相关。对部分材料中MYB75、MYB114基因的表达模式进行分析,MYB基因的表达与热害指数和多酚含量存在一定的相关性。Heat stress is one of major factors in threatening lettuce production.Polyphenols play an important role in response to heat stress in lettuce.The content of polyphenols and the heat damage index of 254 lettuce resources were identified under heat stress.The results showed that the content of polyphenols in the wild type lettuce was the highest,and crisphead was the lowest.Heat damage index of the stem type was the highest,followed by the crisphead and Youmai type,and the wild type lettuce was the lowest.Correlation analysis showed that the content of polyphenols was negatively correlated with heat damage index in lettuce.The expression of MYB75 and MYB114 genes were identified in part of the lettuce materials.The expression of MYB gene may be correlated with heat damage index and polyphenol content.

关 键 词：热胁迫 莴苣 多酚 基因表达 

分 类 号：S636.2[农业科学—蔬菜学]