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Effect of silicate and inorganic carbon availability on the growth and competition of a diatom and two red tide dinoflagellates
Gong, Yangmin; Hu, Hanhua
2014
Source PublicationPHYCOLOGIA
ISSN0031-8884
Volume53Issue:5Pages:433-442
AbstractThe influence of silicate and inorganic carbon availability on the growth of three common algal species, namely, the diatom Skeletonema costatum (Coscinodiscophyceae) and the dinoflagellates Prorocentrum minimum and Alexandrium tamarense (Dinophyceae), was studied. Competition experiments using these three species were performed under different conditions to determine the dominance of red tide algal species in certain marine environments. Skeletonema costatum outgrew the two dinoflagellates in the silicate-replete medium as a result of its high growth rate. However, the cell density of S. costatum decreased with reduced silicate and changed inorganic carbon availabilities. Skeletonema costatum stopped growing when the inorganic carbon concentration was doubled at a constant pH of 7.7, which may have resulted from the enhanced growth of the two dinoflagellates. Prorocentrum minimum and A. tamarense became dominant at constant pH 7.7 conditions. As a component of the CO2 concentrating mechanism (CCM), extracellular carbonic anhydrase (eCA) showed significantly lower activities in S. costatum under low-silicate and constant pH 7.7 conditions; whereas, the P. minimum eCA activity remained almost unaffected. Different eCA responses to reduced silicate and varied carbon sources suggested that the species differed in inorganic carbon acquisition. The results suggested that patterns of species dominance of bloom-forming microalgae may be related to silicate and inorganic carbon availabilities.
SubtypeArticle
KeywordAlexandrium Tamarense Carbonic Anhydrase Dissolved Inorganic Carbon Prorocentrum Minimum Skeletonema Costatum
DOI10.2216/13-234.1
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences ; Marine & Freshwater Biology
WOS SubjectPlant Sciences ; Marine & Freshwater Biology
WOS IDWOS:000345112800004
WOS KeywordHARMFUL ALGAL BLOOMS ; FORMING MARINE-PHYTOPLANKTON ; SKELETONEMA-COSTATUM ; SEASONAL-VARIATIONS ; CONCENTRATING MECHANISMS ; ALEXANDRIUM-TAMARENSE ; CLIMATE-CHANGE ; NUTRIENT ; ACQUISITION ; DYNAMICS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/20409
Collection藻类生物学及应用研究中心_期刊论文
AffiliationChinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Gong, Yangmin,Hu, Hanhua. Effect of silicate and inorganic carbon availability on the growth and competition of a diatom and two red tide dinoflagellates[J]. PHYCOLOGIA,2014,53(5):433-442.
APA Gong, Yangmin,&Hu, Hanhua.(2014).Effect of silicate and inorganic carbon availability on the growth and competition of a diatom and two red tide dinoflagellates.PHYCOLOGIA,53(5),433-442.
MLA Gong, Yangmin,et al."Effect of silicate and inorganic carbon availability on the growth and competition of a diatom and two red tide dinoflagellates".PHYCOLOGIA 53.5(2014):433-442.
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