海洋科学2017，Vol.41Issue(4)：10-16,7.DOI:10.11759/hykx20160505001
热锻炼对龙须菜高温胁迫响应的影响
Effects of heat acclimation on high temperaturestress response of Gracilariopsis lemaneiformis
摘要
Abstract
High temperatures in summer are a major problem in the growth and development of Gracilariopsis lemaneiformis. In this study, the wild-type G. lemaneiformis was used as material. After heat acclimation pretreat-ment at 28°C for 72 h, the algae were placed under conditions of high temperature stress of 32, 36, and 40°C for 24 h. The physiological indices such as MDA, hydrogen peroxide (H2O2) and soluble protein content, superoxide dis-mutase (SOD) activity, and ascorbic acid (ASA) content in G. lemaneiformis were measured under conditions of high temperature stress to assess the effects of high-temperature stress response of G. lemaneiformis. The results revealed that heat acclimation can maintain low MDA levels, reduce the production rate of active oxygen species (H2O2), and alleviate the damage of cell membrane lipid peroxidation. Furthermore, heat acclimation alleviated the degradation of soluble proteins, improved the specific activity of SOD, and relieved the declining AsA rate, indi-cating that heat acclimation can amend the harm of high temperatures in the algae and can improve the capacity of G. lemaneiformis to respond to high temperature stress.关键词
龙须菜(Gracilariopsis lemaneiformis)/高温胁迫/热锻炼Key words
Gracilariopsis lemaneiformis/high temperature stress/heat acclimation分类
农业科技引用本文复制引用
付峰,隋正红,李秉钧,郭振义,鞠晓丹..热锻炼对龙须菜高温胁迫响应的影响[J].海洋科学,2017,41(4):10-16,7.基金项目
烟台大学博士启动金项目(HX14B04) （HX14B04）
山东省高等学校科技计划项目(J16LE13) [The doctoral scientific research foundation of Yantai Univer-sity, No.HX14B04 （J16LE13）
A project of Shandong Province higher educational science and technology program, No.J16LE13] （）
