Effects of desiccation and rehydration on carbon fixation and DOC release in Sargassum thunbergii

doi:10.1016/j.aquabot.2022.103516

	Effects of desiccation and rehydration on carbon fixation and DOC release in Sargassum thunbergii
	Zhao, Zhi-Fang 1,2,3; Zhong, Zhi-Hai 1,2; Wang, Xin 4; Li, Jia-Lin1,2 ; Tong, Shan-Ying 5; Zhang, Jin-Hao 6; Liu, Zheng-Yi1,2 ; Qin, Song1,2
发表期刊	AQUATIC BOTANY
ISSN	0304-3770
	2022-06-01
卷号	179 页码:8
关键词	Sargassum thunbergii Desiccation Rehydration Carbon fixation DOC DON
DOI	10.1016/j.aquabot.2022.103516
英文摘要	Although macroalgae is regarded as the emerging fourth category of "blue carbon ", few studies are available on its carbon sequestration and DOC (dissolved organic carbon) release mechanism at present. In addition, tidal action is an important environmental factor in the intertidal zone, which affects the carbon sequestration and DOC release of macroalgae. Therefore, we set 4-h desiccation and 1-h rehydration to examine the effects of drying-rewetting on the photosynthetic carbon fixation capacity and DOC release mechanism of Sargassum thunbergii. The flowing seawater can provide the nutrients for the growth of marine plants, which plays a vital role in the growth and reproduction of marine plants, so a measurement system that can adjust the flow speed was designed to study the effects of 1 h-rehydration on S. thunbergii. The results showed the desiccation decreased carbon fixation capacity, but increased the protection of PSII by down-regulating F-v/F-m and Phi(PSII) and up regulating NPQ, thereby promoting the recovery of carbon fixation capacity during 1-h rehydration period. It was found that the DOC release rate of S. thunbergii decreased with the carbon fixation rate increase and it was much greater than the carbon fixation rate in the 1-h rehydration period. The DOC release after rehydration was somehow a passive release, which was related to the increase of osmotic pressure, cell membrane damage, and carbon accumulation caused by desiccation. This measurement system can provide a practical reference for the study of carbon sink of macroalgae.
收录类别	SCI
语种	英语
关键词[WOS]	DISSOLVED ORGANIC-CARBON ; PHOTOSYNTHETIC ACTIVITY ; EXTRACELLULAR PRODUCTS ; PHOTOSYSTEM-II ; PHYTOPLANKTON ; TOLERANCE ; STRESS ; MACROALGAE ; GROWTH ; ALGAE
研究领域[WOS]	Plant Sciences ; Marine & Freshwater Biology
WOS记录号	WOS:000796645900001
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/31096
专题	海岸带生物学与生物资源利用重点实验室海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室
通讯作者	Liu, Zheng-Yi; Qin, Song
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Bioresource Utilizat, Yantai 264003, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Sch Resources & Environm, Beijing 101407, Peoples R China 4.Shandong Fisheries Dev & Resources Conservat Gente, Yantai 264003, Peoples R China 5.Ludong Univ, Sch Life Sci, Yantai 264003, Peoples R China 6.Yantai Marine Econ Res Inst, Yantai 264003, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Zhi-Fang,Zhong, Zhi-Hai,Wang, Xin,et al. Effects of desiccation and rehydration on carbon fixation and DOC release in Sargassum thunbergii[J]. AQUATIC BOTANY,2022,179:8.
APA	Zhao, Zhi-Fang.,Zhong, Zhi-Hai.,Wang, Xin.,Li, Jia-Lin.,Tong, Shan-Ying.,...&Qin, Song.(2022).Effects of desiccation and rehydration on carbon fixation and DOC release in Sargassum thunbergii.AQUATIC BOTANY,179,8.
MLA	Zhao, Zhi-Fang,et al."Effects of desiccation and rehydration on carbon fixation and DOC release in Sargassum thunbergii".AQUATIC BOTANY 179(2022):8.