Inter-strain variability in the photosynthetic use of inorganic carbon, exemplified by the pH compensation point, in the cyanobacterium Microcystis aeruginosa

被引：26

作者：

Banares-Espana, Elena

Lopez-Rodas, Victoria

Salgado, Concepcion

Costas, Eduardo

Flores-Moya, Antonio ^{[1
]}

机构：

[1] Univ Malaga, Fac Ciencias, E-29071 Malaga, Spain

[2] Univ Complutense, Fac Vet, E-28040 Madrid, Spain

来源：

AQUATIC BOTANY | 2006年 / 85卷 / 02期

关键词：

carbonic anhydrase; evolution; HCO3-; inter-strain variability; microcystis aeruginosa; pH compensation point; pH drift;

D O I：

10.1016/j.aquabot.2006.03.009

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Inter-strain variability in pH compensation point (pH(c)) in the cyanobacterium Microcystis aeruginosa has been investigated. The pH(c) allows one to discriminate whether the organism is able to take up HCO3- as inorganic carbon (C-i) source in photosynthesis. Eight subgroups were found according to the pH(c) value, ranging from 10.44 +/- 0.22 to 11.67 +/- 0.05. The high variability in pH(c) (and consequently, in the capacity to use HCO3- as C-i source) suggested that different HCO3- use mechanisms could occur in M. aeruginosa and, from an evolutionary point of view, this trait is not under high natural selective pressure. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：159 / 162

页数：4