Response of barley seedlings to UV-B radiation as affected by NaCl

Fedina, I.; Grigorova, Irena; Georgieva, Katya

doi:10.1078/0176-1617-00760

Cited by 43 publications

(29 citation statements)

References 17 publications

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“…It has been reported that salt stress leads to decrease in photosynthetic efficiency (Sayed 2003) and influences chlorophyll content in plant leaves (Fedina et al 2003;Kahn 2003). The reduction of Fv/Fm and ETR affected by both NaCl and Na 2 CO 3 stresses was found in this study (Fig.…”

Section: −supporting

confidence: 58%

Effects of NaCl and Na2CO3 stresses on photosynthetic ability of Chlamydomonas reinhardtii

et al. 2014

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Chloride and carbonate salts are the main salts causing salinization and widely exist in aquatic environment, so algae may suffer from salinization stress for high water evaporation. In this study, in order to investigate and compare the toxic effects of the two salts on algal photosynthesis, we used NaCl and Na2CO3 to stress Chlamydomonas reinhardtii. Under the two salt stresses, the content of O −.2 and H2O2 in the cells was increased significantly, and it was much higher in Na2CO3 treatment than in NaCl treatment at the same Na + concentration. The absorbance spectra and 4 th derivative spectra of photosynthetic pigments were declined under 300 mM NaCl and 25 mM Na2CO3 stresses, and remarkably changed under 50 mM and 100 mM Na2CO3 stresses. When the cells stressed by the two salts, the maximum quantum yield (Fv/Fm), electron transport rate (ETR) and photochemical quenching (qP) were reduced markedly, but the nonphotochemical dissipation (NPQ) was increased markedly. At the same Na + concentration, Na2CO3 stress had stronger toxic effects on photosynthetic ability than NaCl stress.

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Section: −supporting

confidence: 58%

Effects of NaCl and Na2CO3 stresses on photosynthetic ability of Chlamydomonas reinhardtii

et al. 2014

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“…105 In addition, exogenous proline application to barley seedlings followed by UV-B exposure resulted in reduced chlorophyll/carotenoid ratio, oxygen evolution rate and photochemical efficiency of PS II, and also increased proline accumulation. 106 The reduced chlorophyll / carotenoid ratio by exogenous proline application was due to synthesis of pigments that provided protection to cells against UV-B radiation exposure (Fig. 2).…”

Section: Effect Of Exogenous Proline On Oxidative Stress and The Antimentioning

confidence: 99%

Role of proline under changing environments

Hayat

Alyemeni³

et al. 2012

Plant Signaling & Behavior

2,207

1,149

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“…Exogenous Pro treatment in barley seedlings under UV-B stress resulted in decreased chlorophyll/carotenoid ratio, oxygen evolution rate, and photochemical efficiency of PSII. The chlorophyll/ carotenoid ratio decreased due to the formation of the photosynthetic pigments, which rendered protection to the viable cells against UV-B (Fedina et al, 2003).…”

Section: Heavy Metal Toxicitymentioning

confidence: 99%

Metabolic and molecular-genetic regulation of proline signaling and itscross-talk with major effectors mediates abiotic stress tolerance in plants

Roychoudhury¹,

Banerjee²,

Lahiri³

2015

Turk J Bot

107

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Proline (Pro) accumulation is a common response of several plant species to combat abiotic stresses. Under stress conditions, Pro acts as an excellent compatible solute in the plant system, participating in the alleviation of stress sensitivity. Though the metabolic pathways associated with Pro are well studied, parts of its regulatory cascades are still not properly known. It has also been conjectured that epigenetic modifications regulate Pro metabolism during abiotic stress. Apart from Pro, the plant abiotic stress responses are essentially mediated by multiple effectors. Hence, proper analysis of the cross-talks of Pro with the other components of the abiotic stress response has turned out to be mandatory in order to design multistress-tolerant transgenic lines. Highlighting the relation between Pro and seed germination is also essential to understand the notion behind plant susceptibility and survival during stress. Generally, Pro has a universal mechanism to generate abiotic stress tolerance through stabilization of structural components, enzyme structures, and regulation of osmotic adjustments. The success achieved through recent transgenic approaches leading to more accumulation of Pro in the sink has also been focused on in the present review.

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Response of barley seedlings to UV-B radiation as affected by NaCl

Cited by 43 publications

References 17 publications

Effects of NaCl and Na2CO3 stresses on photosynthetic ability of Chlamydomonas reinhardtii

Effects of NaCl and Na2CO3 stresses on photosynthetic ability of Chlamydomonas reinhardtii

Role of proline under changing environments

Metabolic and molecular-genetic regulation of proline signaling and itscross-talk with major effectors mediates abiotic stress tolerance in plants

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