烟台大学学报（自然科学与工程版）2025，Vol.38Issue(1)：30-36,7.DOI:10.13951/j.cnki.37-1213/n.231011
丛生鳗草对高温胁迫的分子响应
Molecular Response of Zostera caespitosa under Thermal Stress
摘要
Abstract
This study investigated the changes in damage and defense mechanisms in Zostera caespitosa under ther-mal stress at both physiological and transcriptomic levels,aiming to understand the impact of ocean warming in the context of climate change on seagrasses.Results show that during the rapid temperature increase from 15 ℃ to 30 ℃,no significant alteration was observed in the fast chlorophyll a fluorescence induction curve(OJIP)of Z.cae-spitosa,while the maximum photochemical efficiency of PSⅡ(Fv/Fm)remains relatively stable.Gene expression results demonstrate the extremely sensitivity of photosynthesis genes to thermal stress,as reflected in the significant downregulation of genes like those of PSⅡ and ATP synthase.Antioxidants such as betaine and the antioxidant en-zyme POD take precedence in providing protective functions.Non-enzymatic antioxidants,flavonoid genes,and heat shock proteins(Hsp20,Hsp70,and Hsp90)responsible for maintaining protein structural stability,are ex-pressed under sub-high-temperature conditions.Additionally,as the temperature increases,the glycolysis pathway,which act as a defense mechanism,is significantly up-expressed.关键词
丛生鳗草/高温胁迫/叶绿素荧光/转录组Key words
Zostera caespitosa/thermal stress/chlorophyll fluorescence/transcriptome分类
生物学引用本文复制引用
文云,童泽录,钟鸣宇,雍玉顺,周悦,马瑞雪,张全胜..丛生鳗草对高温胁迫的分子响应[J].烟台大学学报（自然科学与工程版）,2025,38(1):30-36,7.基金项目
国家自然科学基金资助项目(41376154) （41376154）
联合国开发计划署项目(00138351) （00138351）
烟台大学2021年度校地融合发展项目. （）
