Phenotype and temperature affect the affinity for dissolved inorganic carbon in a cyanobacterium Microcystis
文献类型：期刊论文
| 作者 | Wu, Xinghua1,2; Wu, Zhongxing1,3; Song, Lirong1 |
| 刊名 | HYDROBIOLOGIA
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 675期号:1页码:175-186 |
| 关键词 | Phenotype Colonial Microcystis Dissolved inorganic carbon Carbonic anhydrase |
| ISSN号 | 0018-8158 |
| 通讯作者 | Song, LR (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China ; lrsong@ihb.ac.cn |
| 中文摘要 | The cyanobacterium Microcystis is the most common bloom-forming species in eutrophicated water bodies. Known eco-physiological advantages of this organism help it to compete effectively with other algae and cyanobacteria; however, little is known about the physiological characteristics competence of colonial Microcystis. In the present study, carbonic anhydrase (CA) activity, the affinity for dissolved inorganic carbon (DIC), and the transcription of CA genes were examined in unicellular and colonial Microcystis strains. In comparison with unicellular strains, colonial Microcystis exhibited dramatically higher inorganic carbon affinity at 25 and 35A degrees C, but no significant differences were observed at 15A degrees C. The relative transcription levels of the CA genes icfA1, icfA2, ecaA, and ecaB in all colonial Microcystis were significantly higher than those in unicellular Microcystis at 25 and 35A degrees C. In addition, CA activities of Microcystis increased with temperature, but no significant difference was observed between the unicellular and colonial Microcystis. These results suggest that temperature and phenotypes probably play important roles in the utilization of DIC and trigger the expression of CA genes of Microcystis. The present results may indicate that the capacity for utilizing inorganic carbon plays a role in the persistence or/and succession of different Microcystis blooms. |
| 英文摘要 | The cyanobacterium Microcystis is the most common bloom-forming species in eutrophicated water bodies. Known eco-physiological advantages of this organism help it to compete effectively with other algae and cyanobacteria; however, little is known about the physiological characteristics competence of colonial Microcystis. In the present study, carbonic anhydrase (CA) activity, the affinity for dissolved inorganic carbon (DIC), and the transcription of CA genes were examined in unicellular and colonial Microcystis strains. In comparison with unicellular strains, colonial Microcystis exhibited dramatically higher inorganic carbon affinity at 25 and 35A degrees C, but no significant differences were observed at 15A degrees C. The relative transcription levels of the CA genes icfA1, icfA2, ecaA, and ecaB in all colonial Microcystis were significantly higher than those in unicellular Microcystis at 25 and 35A degrees C. In addition, CA activities of Microcystis increased with temperature, but no significant difference was observed between the unicellular and colonial Microcystis. These results suggest that temperature and phenotypes probably play important roles in the utilization of DIC and trigger the expression of CA genes of Microcystis. The present results may indicate that the capacity for utilizing inorganic carbon plays a role in the persistence or/and succession of different Microcystis blooms. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Marine & Freshwater Biology |
| 类目[WOS] | Marine & Freshwater Biology |
| 研究领域[WOS] | Marine & Freshwater Biology |
| 关键词[WOS] | CO2 CONCENTRATING MECHANISMS ; DIFFUSIVE BOUNDARY-LAYERS ; SYNECHOCOCCUS PCC7942 ; CO2-CONCENTRATING MECHANISM ; CHLAMYDOMONAS-REINHARDTII ; ANHYDRASE ACTIVITY ; WILD-TYPE ; PHYSIOLOGICAL-RESPONSES ; SYNECHOCYSTIS PCC6803 ; HCO3-TRANSPORT |
| 收录类别 | SCI |
| 资助信息 | National Key Project for Basic Research[2008CB418006]; NSFC-Yunnan Joint Foundation[U08333604]; Chinese Academy of Sciences[KZCX1-YW-14-1] |
| 语种 | 英语 |
| WOS记录号 | WOS:000293643700017 |
| 公开日期 | 2011-11-09 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/16363]  |
| 专题 | 水生生物研究所_藻类生物学及应用研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China 3.Southwest Univ, Key Lab Ecoenvironm Three Gorges Reservoir Reg, Sch Life Sci,Minist Educ, Chongqing Key Lab Plant Ecol & Resources Res Thre, Chongqing 400715, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Xinghua,Wu, Zhongxing,Song, Lirong. Phenotype and temperature affect the affinity for dissolved inorganic carbon in a cyanobacterium Microcystis[J]. HYDROBIOLOGIA,2011,675(1):175-186. |
| APA | Wu, Xinghua,Wu, Zhongxing,&Song, Lirong.(2011).Phenotype and temperature affect the affinity for dissolved inorganic carbon in a cyanobacterium Microcystis.HYDROBIOLOGIA,675(1),175-186. |
| MLA | Wu, Xinghua,et al."Phenotype and temperature affect the affinity for dissolved inorganic carbon in a cyanobacterium Microcystis".HYDROBIOLOGIA 675.1(2011):175-186. |
入库方式： OAI收割
来源：水生生物研究所
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