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

Sinetova, Maria A.; Mironov, Kirill S.; Mustárdy, László; Shapiguzov, Alexey; Bachin, Dmitry; Allakhverdiev, Suleyman I.

doi:10.1016/j.jphotobiol.2015.07.012

Cited by 11 publications

(6 citation statements)

References 28 publications

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“…Under saline conditions, a rapid increase in the intracellular salt concentration causes a rapid outflow of water from the cells via aquaporins, thereby leading to an osmotic effect (Allakhverdiev et al, 2000). For example, aquaporin-deficient cells of Synechocystis are unable to efficiently regulate the cytoplasmic volume under salt stress (Sinetova et al, 2015), and overexpressing some aquaporin genes enhances the salt tolerance of transgenic plants (Sun et al, 2015). In our study, AQP1 and AQP2 were affected by salinity over time in both cultivars.…”

Section: Transcriptome Analyses Of Salt-responsive Genes That Encode mentioning

confidence: 55%

Physiological analysis and transcriptome comparison of two muskmelon (Cucumis melo L.) cultivars in response to salt stress

et al. 2016

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ABSTRACT. Melon (Cucumis melo L.) is an important vegetable crop that ranks second in salt tolerance among the Cucurbitaceae. Previous studies on the two muskmelon cultivars 'Bing XueCui' (BXC) and 'Yu Lu' (YL) revealed that they had different characteristics under salt stress, but the molecular basis underlying their different physiological responses is unclear. Here, we combined a physiological study with a genome-wide transcriptome analysis to understand the molecular basis of genetic variation that responds to salt stress in the melon. BXC performed better under salt stress than YL in terms of biomass and photosynthetic characteristics, because it exhibited less reduction in transpiration rate, net photosynthesis rate, and stomatal conductance under 150-mM NaCl stress than YL. A transcriptome comparison of the leaves of the cultivars revealed that 1171 genes responded to salt stress in BXC while 1487 genes were identified as salt-stress-responsive in YL. A real-time polymerase chain reaction analysis of 12 of the responsive genes revealed that there was a strong, positive correlation with RNA sequencing data. The genes were involved in several pathways, including photosynthesis, the biosynthesis of secondary metabolites, metabolism, and plant hormone signal transduction, and their expression levels differed between the two cultivars in response to salt stress. This study provides a molecular perspective of two melon cultivars in response to salt stress, and its results could be used to investigate the complex molecular mechanisms underlying salt tolerance in the melon.

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Section: Transcriptome Analyses Of Salt-responsive Genes That Encode mentioning

confidence: 55%

Physiological analysis and transcriptome comparison of two muskmelon (Cucumis melo L.) cultivars in response to salt stress

et al. 2016

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“…) and has been involved in environmental stress response in bacteria (Wang ; Sinetova et al . ; Wood ). Putative genes for two different pathways of trehalose biosynthesis ( otsAB and treYZ) and two genes for its degradation ( tre, tp ) were found in Sphingobium sp.…”

Section: Resultsmentioning

confidence: 99%

Insights into the mechanisms of desiccation resistance of the Patagonian PAH-degrading strainSphingobiumsp. 22B

et al. 2018

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“…This reaction is considered as a photoprotective mechanism that protects photosynthetic apparatus against high light levels in cyanobacteria. Aquaporins in the cytoplasmic membrane of Synechocystis sp PCC6803 might be necessary for the repair of PSII and PSI photodamage (71).…”

Section: Discussionmentioning

confidence: 99%

Photosynthetic and Antioxidant Activities in Extremophile Microalgae Dunaliella Salina, Cylindrotheca Closterium and Phormidium Versicolor According to NaCl Concentration and Irradiance

Guermazi

Masmoudi

Gammoudi

et al. 2021

Preprint

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Dunaliella salina (Chlorophyceae), Phormidium versicolor (Cyanophyceae) and Cylindrotheca closterium (Bacillariophyceae) were isolated from three ponds in the solar saltern of Sfax (Tunisia) having an average salinity of 350, 100 and 90 respectively. Growth, pigment contents, photosynthetic and antioxidant enzyme activities were measured under controlled conditions: three light levels (300, 500 and 1000 µmol photons m-2 s-1) and three NaCl concentrations (40, 80 and 140 g L-1). The highest salinity reduced the growth of D. salina and P. versicolor, and strongly inhibited that of C. closterium. These results are in accordance with the species distibution in the salt marshes. Irradiance rise only induced a significant increase of net photosynthesis in C. closterium probably due to the efficient nonphotochemical quenching and antioxidative enzyme activities. According to □PSII values, the photosynthetic apparatus of P. versicolor was stimulated by increasing salinity whereas that of D. salina and C. closterium was decreased by irradiance rise. The production of carotenoids in D. salina and P. versicolor was stimulated when salinity and irradiance increased whereas it decreased in the diatom. Antioxidant activity of carotenoids could compensate the low antioxidant enzyme activity measured in D. salina.

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

Cited by 11 publications

References 28 publications

Physiological analysis and transcriptome comparison of two muskmelon (Cucumis melo L.) cultivars in response to salt stress

Physiological analysis and transcriptome comparison of two muskmelon (Cucumis melo L.) cultivars in response to salt stress

Insights into the mechanisms of desiccation resistance of the Patagonian PAH-degrading strainSphingobiumsp. 22B

Photosynthetic and Antioxidant Activities in Extremophile Microalgae Dunaliella Salina, Cylindrotheca Closterium and Phormidium Versicolor According to NaCl Concentration and Irradiance

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