NDLI: Participation of two carbonic anhydrases of the alpha family in photosynthetic reactions in Arabidopsis thaliana

Content Provider	Springer Nature Link
Author	Zhurikova, E. M. Ignatova, L. K. Rudenko, N. N. Mudrik, V. A. Vetoshkina, D. V. Ivav, B. N.
Copyright Year	2016
Abstract	The expression of genes of two carbonic anhydrases (CA) belonging to the a-family, α-CA2 and α-CA4 (according to the nomenclature in N. Fabre et al. (2007) Plant Cell Environ., 30, 617-629), was studied in arabidopsis (Arabidopsis thaliana, var. Columbia) leaves. The expression of the At2g28210 gene coding α-CA2 decreased under increase in plant illumination, while the expression of the At4g20990 gene coding α-CA4 increased. Under conditions close to optimal for photosynthesis, in plants with gene At2g28210 knockout, the effective quantum yield of photosystem 2 and the light-induced accumulation of hydrogen peroxide in leaves were lower than in wild type plants, while the coefficient of non-photochemical quenching of leaf chlorophyll a fluorescence and the rate of CO2 assimilation in leaves were higher. In plants with At4g20990 gene knockout, the same characteristics changed in opposite ways relative to wild type. Possible mechanisms of the participation of αa-CA2 and α-CA4 in photosynthetic reactions are discussed, taking into account that protons can be either consumed or released in the reactions they catalyze.
Starting Page	1182
Ending Page	1187
Page Count	6
File Format	PDF
ISSN	00062979
Journal	Biochemistry (Moscow)
Volume Number	81
Issue Number	10
e-ISSN	16083040
Language	English
Publisher	Pleiades Publishing
Publisher Date	2016-10-19
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	photosynthesis carbonic anhydrase arabidopsis gene expression mutants Biochemistry Bioorganic Chemistry Microbiology Biomedicine
Content Type	Text
Resource Type	Article
Subject	Biochemistry Biophysics Geriatrics and Gerontology

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