高温胁迫对牡丹渗透调控、抗氧化酶活性及光合特性的影响

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Zhipeng Sheng, Jiasong Meng, Jun Tao, Daqiu Zhao
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引用次数: 0

摘要

牡丹(Paeonia suffruticosa Andr.)是中国的传统花卉,喜欢凉爽的天气。但长江中下游地区夏季高温制约了其生长发育。研究了高温胁迫下牡丹的渗透调节、抗氧化酶活性和光合特性。结果表明,高温胁迫破坏了细胞膜,表现为相对电导率和丙二醛含量升高。此外,高温胁迫导致活性氧过度积累,从而激活抗氧化酶活性。光合参数和叶绿素荧光参数直接反映了高温胁迫下光系统II反射中心的损伤情况。此外,高温胁迫导致气孔关闭和叶绿体损伤。本研究揭示了牡丹对高温胁迫的生理反应,为高温地区牡丹的推广和高温抗性的提高奠定了基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Osmotic Regulation, Antioxidant Enzyme Activities and Photosynthetic Characteristics of Tree Peony ( Andr.) in Response to High-Temperature Stress
Tree peony (Paeonia suffruticosa Andr.) is a traditional Chinese flower, which prefers cool weather. However, high temperature in summer in the middle and lower reaches of the Yangtze River restricts its growth and development. In this study, osmotic regulation, antioxidant enzyme activities, and photosynthetic characteristics of tree peony in response to high-temperature stress were investigated. The results showed that high-temperature stress had destroyed the cell membrane, manifested as the increased relative electrical conductivity and malondialdehyde content. Moreover, high-temperature stress led to excessive accumulation of reactive oxygen species, thereby, activating antioxidant enzyme activities. Also, photosynthetic parameters and chlorophyll fluorescence parameters directly reflected the damage to the photosystem II reflection center under high-temperature stress. In addition, high-temperature stress led to stomatal closure and chloroplast damage. This study revealed the physiological responses of tree peony to high-temperature stress, laying a foundation for the promotion of tree peony in high-temperature areas and the improvement of high-temperature resistance.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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