Effect of high light and desiccation on photosystem II in the seedlings and mature plants of tropical seagrass Enhalus acoroides during low tide

doi:10.1007/s00343-021-1170-2

IOCAS-IR > 实验海洋生物学重点实验室

	Effect of high light and desiccation on photosystem II in the seedlings and mature plants of tropical seagrass Enhalus acoroides during low tide
	Che, Xingkai 1,2; Li, Hu1,2 ; Zhang, Litao 1,2,3; Liu, Jianguo 1,2,3
	2022-08-30
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	10
通讯作者	Liu, Jianguo(jgliu@qdio.ac.cn)
摘要	During low tide, the intertidal seagrass Enhalus acoroides is often exposed to high light and desiccation, which can seriously threaten its survival, at least partly by inhibiting photosystem II (PSII) activity. The response of leaves of E. acoroides to high light and desiccation was compared for seedlings and mature plants. Results show that the resistance of seedling and mature leaves to high light was quite similar, but to desiccation was very different. Seedling leaves were more sensitive to desiccation than the mature plant leaves, but had better water retention. The damage of desiccation to seedling leaves was mainly caused by dehydration, whereas that to mature plant leaves was caused by hypersaline toxicity. The recovery rate of PSII of seedling leaves was significantly slower than that of the mature plants after the stresses disappeared, which may at least partly contribute to seedling mortality in the wild. In addition, compared to high light, desiccation seriously inhibited the recovery rate of PSII activities even if the leaves became fully rehydrated to their normal relative water content (RWC) in the following re-immersion. Desiccation inhibited the recovery rate of RC/CS M (reaction center per cross section (at t=t Fm)) to decrease the production of assimilatory power, which maybe the cause of the slower PSII recovery in desiccation treatments. This study demonstrates that desiccation particularly coupling with high light have a very negative effect on the PSII of E. acoroides during low tide and the sensitivity of seedlings and mature plants to desiccation is significantly different, which have important reference significance to choose an appropriate transplanting depth where seedlings and mature plants of E. acoroides not only receive sufficient light for growth, but also that minimize desiccation stress during low tide.
关键词	Enhalus acoroides high light desiccation photosystem II
DOI	10.1007/s00343-021-1170-2
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Natural Science Foundation of China[32071577] ; International Partnership Program of Chinese Academy of Sciences[GJHZ2039] ; Shandong Provincial Natural Science Foundation[ZR201911130493] ; Taishan Industrial Experts Program[Tscy20200102]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000847628700014
出版者	SCIENCE PRESS
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/180922
专题	实验海洋生物学重点实验室
通讯作者	Liu, Jianguo
作者单位	1.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Megasci, CAS, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Shandong Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Biol & Biotechnol, Qingdao 266237, Peoples R China
第一作者单位	中国科学院海洋大科学研究中心
通讯作者单位	中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Che, Xingkai,Li, Hu,Zhang, Litao,et al. Effect of high light and desiccation on photosystem II in the seedlings and mature plants of tropical seagrass Enhalus acoroides during low tide[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2022:10.
APA	Che, Xingkai,Li, Hu,Zhang, Litao,&Liu, Jianguo.(2022).Effect of high light and desiccation on photosystem II in the seedlings and mature plants of tropical seagrass Enhalus acoroides during low tide.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,10.
MLA	Che, Xingkai,et al."Effect of high light and desiccation on photosystem II in the seedlings and mature plants of tropical seagrass Enhalus acoroides during low tide".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2022):10.