The diversity of carbon dioxide-concentrating mechanisms in marine diatoms as inferred from their genetic content
Chen Shen; Brian Hopkinson
SourceJournal of Experimental Botany
4288
Volume68Issue:14Pages:3937-3948
KeywordCarbon Dioxide Carbonic Anhydrase Diatom Marine Photosynthesis Transporters.
DOI10.1093/jxb/erx163
Subtyperesearch article
English AbstractMarine diatoms are one of the most ecologically signifcant primary producers in the ocean. Most diatoms use a CO2-concentrating mechanism (CCM) to overcome the scarcity of CO2 in the ocean and limitations of the carbon-fxing enzyme Rubisco. However, the CCMs in model diatoms differ substantially in their genetic make-up and structural organization. To assess the extent of CCM diversity in marine diatoms more generally, we analyzed genome and transcriptome data from 31 diatom strains to identify putative CCM genes, examine the overall CCM architecture, and study CCM development in the context of the evolutionary history of these diatoms. Key CCM genes [carbonic anhydrases (CAs) and solute carrier 4 (SLC4) bicarbonate transporters] identifed in the diatoms were placed into groups of likely orthologs by sequence similarity (OrthoMCL) and phylogenetic methods. These analyses indicated that diatoms seem to share similar HCO3- transporters, but possess a variety of CAs that have either undergone extensive diversifcation within the diatom lineage or have been acquired through horizontal gene transfer. Hierarchical clustering of the diatom species based on their CCM gene content suggests that CCM development is largely congruent with evolution of diatom species, despite some notable differences in CCM genes even among closely related species.
WOS KeywordCarbon dioxide ; carbonic anhydrase ; diatom ; marine ; photosynthesis ; transporters.
Funding ProjectCollaborative Research: Ocean Acidification-Category 1: Effects of pCO2 and pH on Photosynthesis, Respiration and Growth in Marine Phytoplankton ; Collaborative Research: Physiological and Genetic Characterization of C02 Concentrating Mechanisms in Marine Diatoms
Language英语
Project NumberNSF EF1041023 ; NSF MCB 1129326
Funding OrganizationUS National Science Foundation
Content Type期刊论文
源URL[http://ir.qibebt.ac.cn/handle/337004/9868]  
Collection青岛生物能源与过程研究所_单细胞中心
Corresponding AuthorBrian Hopkinson
AffiliationQingdao Institute of BioEnergy and BioProcess Technology, Chinese Academy of Sciences, Qingdao, China (2)Department of Marine Sciences, University of Georgia, Athens, GA, USA (3)J. Craig Venter Institute, La Jolla, CA, USA
Recommended Citation
GB/T 7714
Chen Shen,Brian Hopkinson. The diversity of carbon dioxide-concentrating mechanisms in marine diatoms as inferred from their genetic content[J]. Journal of Experimental Botany,4288,68(14):3937-3948.
APA Chen Shen,&Brian Hopkinson.(4288).The diversity of carbon dioxide-concentrating mechanisms in marine diatoms as inferred from their genetic content.Journal of Experimental Botany,68(14),3937-3948.
MLA Chen Shen,et al."The diversity of carbon dioxide-concentrating mechanisms in marine diatoms as inferred from their genetic content".Journal of Experimental Botany 68.14(4288):3937-3948.
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