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Role of C-4 carbon fixation in Ulva prolifera, the macroalga responsible for the world's largest green tides
Liu, Dongyan1; Ma, Qian1; Valiela, Ivan2; Anderson, Donald M.3; Keesing, John K.4; Gao, Kunshan5; Zhen, Yu6; Sun, Xiyan7; Wang, Yujue1
Source PublicationCOMMUNICATIONS BIOLOGY
2020-09-07
Volume3Issue:1Pages:8
DOI10.1038/s42003-020-01225-4
Abstract

Most marine algae preferentially assimilate CO2 via the Calvin-Benson Cycle (C-3) and catalyze HCO3- dehydration via carbonic anhydrase (CA) as a CO2-compensatory mechanism, but certain species utilize the Hatch-Slack Cycle (C-4) to enhance photosynthesis. The occurrence and importance of the C-4 pathway remains uncertain, however. Here, we demonstrate that carbon fixation in Ulva prolifera, a species responsible for massive green tides, involves a combination of C-3 and C-4 pathways(,) and a CA-supported HCO3- mechanism. Analysis of CA and key C-3 and C-4 enzymes, and subsequent analysis of delta C-13 photosynthetic products showed that the species assimilates CO2 predominately via the C-3 pathway, uses HCO3- via the CA mechanism at low CO2 levels, and takes advantage of high irradiance using the C-4 pathway. This active and multi-faceted carbon acquisition strategy is advantageous for the formation of massive blooms, as thick floating mats are subject to intense surface irradiance and CO2 limitation. Liu et al. present evidence that carbon fixation in Ulva prolifera takes place via a combination of C-3 and C-4 pathways in combination with the enzyme carbonic anhydrase. The active and multi-faceted carbon acquisition strategy in U. prolifera is advantageous for the formation of massive blooms as the thick floating mats are subject to intense surface irradiance and CO2 limitation.

Funding OrganizationState Key Project of Research and Development Plan, Ministry of Science and Technology of the Peoples Republic of China ; Woods Hole Oceanographic Institution-Ocean University of China Cooperative Research Initiative
Indexed BySCI
Language英语
WOS KeywordCO2 CONCENTRATING MECHANISMS ; YELLOW SEA ; SEAWEED AQUACULTURE ; MARINE DIATOMS ; PHOTOSYNTHESIS ; EXPANSION ; CHINA ; ACCUMULATION ; ANATOMY ; LIGHT
WOS Research AreaLife Sciences & Biomedicine - Other Topics ; Science & Technology - Other Topics
WOS IDWOS:000570959000006
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/28406
Collection支撑部门_中国科学院牟平海岸带环境综合试验站
中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中国科学院海岸带环境过程与生态修复重点实验室
Corresponding AuthorLiu, Dongyan
Affiliation1.East China Normal Univ, Inst Ecochongming, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China
2.Ecosyst Ctr, Marine Biol Lab, Woods Hole, MA 02543 USA
3.Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA
4.Univ Western Australia, Indian Ocean Marine Res Ctr, Oceans Inst, CSIRO Oceans & Atmosphere Res, Crawley, WA, Australia
5.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361005, Peoples R China
6.Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266100, Peoples R China
7.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Muping Coastal Environm Res Stn, Yantai 264003, Peoples R China
Recommended Citation
GB/T 7714
Liu, Dongyan,Ma, Qian,Valiela, Ivan,et al. Role of C-4 carbon fixation in Ulva prolifera, the macroalga responsible for the world's largest green tides[J]. COMMUNICATIONS BIOLOGY,2020,3(1):8.
APA Liu, Dongyan.,Ma, Qian.,Valiela, Ivan.,Anderson, Donald M..,Keesing, John K..,...&Wang, Yujue.(2020).Role of C-4 carbon fixation in Ulva prolifera, the macroalga responsible for the world's largest green tides.COMMUNICATIONS BIOLOGY,3(1),8.
MLA Liu, Dongyan,et al."Role of C-4 carbon fixation in Ulva prolifera, the macroalga responsible for the world's largest green tides".COMMUNICATIONS BIOLOGY 3.1(2020):8.
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