植物学报2024，Vol.59Issue(4)：574-584,11.DOI:10.11983/CBB24039
水稻突变体pe-1对弱光胁迫的响应机制
Response Mechanism of Rice Mutant pe-1 to Low Light Stress
摘要
Abstract
This study utilized the γ-ray-induced early-maturation,fresh-green mutant line pe-1 from indica rice as an experimental material.At the trilobal stage and the tillering stage,we observed differences in morphological characteris-tics between pe-1 and wild type.In addition,we measured the activity of antioxidant-related enzymes and their regulatory genes expression,chlorophyll content and chloroplast synthesis and degradation-related gene expression,and photo-morphogenesis-related gene expression to detect the differences in the low light response between the pe-1 and wild type.The results showed that pe-1 exhibited less leaf yellowing,taller stature,and larger leaf area compared to wild type post-stress.The changes in chlorophyll content differed between leaves at the trilobal stage and the tillering stage.Addi-tionally,pe-1 resulted in increased chlorophyll content and elevated levels of the stress-responsive enzymes catalase and peroxidase,as well as increased expression of related genes.This indicates enhanced reactive oxygen species sca-venging and stronger adaptability to adverse conditions under low light conditions.Moreover,pe-1 exhibited increased expression levels of genes associated with photomorphogenesis,indicating superior light perception ability under low light intensities.In summary,the pe-1 mutant shows immense potential for survival under low light stress,contributing to the breeding rice with low light tolerance.关键词
水稻/pe-1/弱光胁迫/光形态建成/叶绿素/叶绿体合成与降解Key words
rice/pe-1/low light stress/photomorphogenesis/chlorophyll/chloroplast synthesis and degradation引用本文复制引用
黄佳慧,张维林,饶玉春,杨惠敏,陈欣雨,朱超宇,江亚楠,胡程翔,连锦瑾,芦涛,路梅..水稻突变体pe-1对弱光胁迫的响应机制[J].植物学报,2024,59(4):574-584,11.基金项目
浙江省自然科学基金重点项目(No.LZ23C130003)、2024年国家级大学生创新创业训练计划和2024年浙江省大学生科技创新活动计划暨新苗人才计划 （No.LZ23C130003）
