<p>Effects of desiccation and rehydration on carbon fixation and DOC release in Sargassum thunbergii</p>

doi:10.1016/j.aquabot.2022.103516

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 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所重点实验室

	Effects of desiccation and rehydration on carbon fixation and DOC release in Sargassum thunbergii
	Zhao, Zhi-Fang 4,5,6; Zhong, Zhi-Hai 5,6; Wang, Xin 3; Li, Jia-Lin 5,6; Tong, Shan-Ying 2; Zhang, Jin-Hao 1; Liu, Zheng-Yi 5,6; Qin, Song 5,6
刊名	AQUATIC BOTANY
	2022-06-01
卷号	179 页码:8
关键词	Sargassum thunbergii Desiccation Rehydration Carbon fixation DOC DON
ISSN号	0304-3770
DOI	10.1016/j.aquabot.2022.103516
通讯作者	Liu, Zheng-Yi(zyliu@yic.ac.cn) ; Qin, Song(sqin@yic.ac.cn)
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.
WOS关键词	DISSOLVED ORGANIC-CARBON ; PHOTOSYNTHETIC ACTIVITY ; EXTRACELLULAR PRODUCTS ; PHOTOSYSTEM-II ; PHYTOPLANKTON ; TOLERANCE ; STRESS ; MACROALGAE ; GROWTH ; ALGAE
WOS研究方向	Plant Sciences ; Marine & Freshwater Biology
语种	英语
WOS记录号	WOS:000796645900001
资助机构	National Natural Science Foundation of China ; Shandong Provincial Natural Science Foun-dation, China ; Key R & D Projects in Shandong Province, China ; Technology Innovation Development Program of Yantai, China
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/31095]
专题	烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
通讯作者	Liu, Zheng-Yi; Qin, Song
作者单位	1.Yantai Marine Econ Res Inst, Yantai 264003, Peoples R China 2.Ludong Univ, Sch Life Sci, Yantai 264003, Peoples R China 3.Shandong Fisheries Dev & Resources Conservat Gente, Yantai 264003, Peoples R China 4.Univ Chinese Acad Sci, Sch Resources & Environm, Beijing 101407, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 6.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Bioresource Utilizat, 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.