Properties of Mutants of Synechocystis sp. Strain PCC 6803 Lacking Inorganic Carbon Sequestration Systems | Zendy

Min Xu | Zendy; Gábor Bernát | Zendy; Abhay K. Singh | Zendy; Hualing Mi | Zendy; Matthias Rögner | Zendy; Himadri B. Pakrasi | Zendy; Teruo Ogawa | Zendy

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Properties of Mutants of Synechocystis sp. Strain PCC 6803 Lacking Inorganic Carbon Sequestration Systems

Author(s) -

Min Xu,

Gábor Bernát,

Abhay K. Singh,

Hualing Mi,

Matthias Rögner,

Himadri B. Pakrasi,

Teruo Ogawa

Publication year - 2008

Publication title -

plant and cell physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.975

H-Index - 152

eISSN - 1471-9053

pISSN - 0032-0781

DOI - 10.1093/pcp/pcn139

Subject(s) - mutant , strain (injury) , synechocystis , chemistry , carbon sequestration , total inorganic carbon , carbon fibers , photosynthesis , biophysics , biochemistry , carbon dioxide , biology , gene , materials science , organic chemistry , anatomy , composite number , composite material

A mutant (Delta5) of Synechocystis sp. strain PCC 6803 constructed by inactivating five inorganic carbon sequestration systems did not take up CO(2) or HCO(3)(-) and was unable to grow in air with or without glucose. The Delta4 mutant in which BicA is the only active inorganic carbon sequestration system showed low activity of HCO(3)(-) uptake and grew under these conditions but more slowly than the wild-type strain. The Delta5 mutant required 1.7% CO(2) to attain half the maximal growth rate. Electron transport activity of the mutants was strongly inhibited under high light intensities, with the Delta5 mutant more susceptible to high light than the Delta4 mutant. The results implicated the significance of carbon sequestration in dissipating excess light energy.

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