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Effects of hypo- and hypersalinity on photosynthetic performance of Sargassum fusiforme (Fucales, Heterokontophyta)
Xie, X. J.1,3; Wang, X. L.1,3,4; Lin, L. D.2; He, L. W.1,3; Gu, W. H.1,3; Gao, S.1,3; Yan, X. F.2; Pan, G. H.5; Wu, M. J.2; Wang, G. C.1,3
2016-06-01
Source PublicationPHOTOSYNTHETICA
Volume54Issue:2Pages:210-218
SubtypeArticle
AbstractPhotoprotection mechanisms protect photosynthetic organisms, especially under stress conditions, against photodamage that may inhibit photosynthesis. We investigated the effects of short-term immersion in hypo- and hypersalinity sea water on the photosynthesis and xanthophyll cycle in Sargassum fusiforme (Harvey) Setchell. The results indicated that under moderate light [110 mu mol(photon) m(-2) s(-1)], the effective quantum yield of PSII was not reduced in S. fusiforme fronds after 1 h in hyposalinity conditions, even in fresh water, but it was significantly affected by extreme hypersalinity treatment (90aEuro degrees sea water). Under high light [HL, 800 mu mol(photon) m(-2) s(-1)], photoprotective mechanisms operated efficiently in fronds immersed in fresh water as indicated by high reversible nonphotochemical quenching of chlorophyll fluorescence (NPQ) and de-epoxidation state; the quantum yield of PSII recovered during the subsequent relaxation period. In contrast, fronds immersed in 90aEuro degrees sea water did not withstand HL, barely developed reversible NPQ, and accumulated little antheraxanthin and zeaxanthin during HL, while recovery of the quantum yield of PSII was severely inhibited during the subsequent relaxation period. The data provided concrete evidence supporting the short-term tolerance of S. fusiforme to immersion in fresh water compared to hypersalinity conditions. The potential practical implications of these results were also discussed.
KeywordAquaculture Chlorophyll a Fluorescence Dithiothreitol Rapid Light Curve Violaxanthin
DOI10.1007/s11099-015-0169-3
Indexed BySCI
Language英语
WOS IDWOS:000374844100005
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/131019
Collection实验海洋生物学重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
2.Wenzhou Univ, Coll Life & Environm Sci, Zhejiang Prov Key Lab Water Environm & Marine Bio, Wenzhou 325035, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266071, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
5.Tianjin Univ Sci & Technol, Coll Marine Sci & Engn, Tianjin Key Lab Marine Sources & Chem, Tianjin 300457, Peoples R China
First Author AffilicationKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Xie, X. J.,Wang, X. L.,Lin, L. D.,et al. Effects of hypo- and hypersalinity on photosynthetic performance of Sargassum fusiforme (Fucales, Heterokontophyta)[J]. PHOTOSYNTHETICA,2016,54(2):210-218.
APA Xie, X. J..,Wang, X. L..,Lin, L. D..,He, L. W..,Gu, W. H..,...&Wang, G. C..(2016).Effects of hypo- and hypersalinity on photosynthetic performance of Sargassum fusiforme (Fucales, Heterokontophyta).PHOTOSYNTHETICA,54(2),210-218.
MLA Xie, X. J.,et al."Effects of hypo- and hypersalinity on photosynthetic performance of Sargassum fusiforme (Fucales, Heterokontophyta)".PHOTOSYNTHETICA 54.2(2016):210-218.
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