Aquaporin-deficient mutant of Synechocystis is sensitive to salt and high-light stress

Sinetova, M. A. and Mironov, K. S. and Mustárdy, László and Shapiguzov, A. and Bachin, D. (2015) Aquaporin-deficient mutant of Synechocystis is sensitive to salt and high-light stress. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B: BIOLOGY, 152. pp. 377-382. ISSN 1011-1344

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Cyanobacterial aquaporins play an important role in the regulation of various physiological functions: cell volume control, osmotic stress responses, gas exchange. We employed the AqpZ-deficient mutant of Synechocystis to study the role of aquaporins in responses to salt (NaCl) and high light stress. Electron microscopy and paramagnetic resonance revealed that AqpZ-deficient cells are unable to efficiently regulate the cytoplasmic volume under salt stress. Both photosystems (PSII and, especially, PSI) of these cells are more sensitive to NaCl and to high light. Thus, AqpZ of Synechocystis participates in regulation of the photosynthetic activity of PSI and PSII under salt and high-light stress. Our results demonstrate that AqpZ might be necessary for the repair of PSII and PSI after photodamage. © 2015 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: ultrastructure; priority journal; Photosystem II; photosystem I; nonhuman; light stress; light; high light stress; genetic transcription; Electron Transport; electron spin resonance; electron microscopy; Cytoplasm; controlled study; CHLOROPHYLL FLUORESCENCE; cell volume; bacterial growth; ARTICLE; sodium chloride; Synechocystis; SALT STRESS; PHOTOSYNTHESIS; HIGH-LIGHT STRESS; CYANOBACTERIA; Aquaporin
Subjects: Q Science / természettudomány > QK Botany / növénytan > QK10 Plant physiology / növényélettan
Depositing User: MTMT SWORD
Date Deposited: 11 Feb 2016 08:19
Last Modified: 11 Feb 2016 08:19

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