Selenium Promotes the Growth and Photosynthesis of Tomato Seedlings Under Salt Stress by Enhancing Chloroplast Antioxidant Defense System

Diao, Ming; Ma, Lukai; Wang, Jianwei; Cui, Jun; Fu, Aifei; Liu, Huiying

doi:10.1007/s00344-014-9416-2

Cited by 190 publications

(128 citation statements)

References 46 publications

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“…Here, relatively higher P n , together with relatively higher g s , in salt-resistant cultivar (YN19) suggested that salt-induced reduction in photosynthesis was at least partly due to stomatal limitation. In agreement with our results, Diao et al (2014) documented that the reduction of photosynthesis in salt-stressed tomato plants was partly caused by stomatal closure. In addition, higher guard cell pair width was found in cv.…”

Section: Resultssupporting

confidence: 93%

Salt response of photosynthetic electron transport system in wheat cultivars with contrasting tolerance

Sun¹,

Ren²,

Fan³

et al. 2016

Plant Soil Environ.

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Section: Resultssupporting

confidence: 93%

Salt response of photosynthetic electron transport system in wheat cultivars with contrasting tolerance

Sun¹,

Ren²,

Fan³

et al. 2016

Plant Soil Environ.

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“…Over-accumulation of these ions generates many physiological disorders in plants, but Cl -ions are considered to be more toxic than Na + (Hasanuzzaman et al, 2013). The results of previous studies indicated that exogenously applied Se both in the form of selenate (Kong et al, 2005;Hawrylak-Nowak, 2009;Hasanuzzaman et al, 2011) and selenite (Walaa et al, 2010;KeLing et al, 2013;Diao et al, 2014) can be beneficial for plants grown under salt stress. Nevertheless, in the above studies the effectiveness of selenate and selenite in alleviation of salinity stress was not compared.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, Se-enriched crops have shown enhanced tolerance to certain abiotic stresses, e.g. drought (Yao et al, 2012), salinity (Kong et al, 2005, Diao et al, 2014, and excess of some heavy metals (Filek et al, 2008;Mozafariyan et al, 2014). The protective role of low Se concentrations in plants exposed to stressful conditions in most cases has been attributed to activation of antioxidative defense systems in plant cells (Kaur et al, 2014;Sieprawska et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Selenite is More Efficient than Selenate in Alleviation of Salt Stress in Lettuce Plants

Hawrylak-Nowak

2015

Acta Biologica Cracoviensia S. Botanica

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There is increasing evidence showing that low selenium (Se) concentrations may increase tolerance of crop plants to several environmental stresses. The aim of this study was to compare the influence of two chemical forms of Se (selenite or selenate) at different concentrations (2 or 6 μM) on the resistance of butterhead lettuce (Lactuca sativa L. var. capitata) cv. Justyna to NaCl-induced stress (40 mM NaCl). Plant growth was negatively affected by salinity, but the level of photosynthetic pigments was not reduced. Se application at a concentration of 2 μM significantly improved the growth of salt-stressed plants, but selenite was much more effective than selenate in enhancing salt-tolerance of lettuce. The growth-promoting effect of Se was also noted at 6 μM of selenite, but did not appear at 6 μM of selenate. The beneficial effect of Se in salt-stressed lettuce could be due to antioxidative activity of Se, root system growth stimulation, and/or increase in photosynthetic pigment concentration after Se supplementation; however, it was not related to either increase in proline accumulation or reduction in foliar Na + or Cl -concentration. These results imply that Se application, especially in the form of selenite, can enhance antioxidant defense of lettuce under salt stress, and Se supplementation may be recommended for areas of lettuce cultivation with excessive salt accumulation.K Ke ey y w wo or rd ds s: : Lactuca sativa L., oxidative stress, proline, salinity, selenium ACTA BIOLOGICA CRACOVIENSIA Series Botanica 57/2: [49][50][51][52][53][54] 2015

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“…Previous studies have shown that Se improves plant salt tolerance (Jiang et al, 2017;Mozafariyan et al, 2016;Diao et al 2014). Most these studies have suggested that, under stressful conditions, Se seems to act as an antioxidant, alleviating oxidative stress.…”

Section: Resultsmentioning

confidence: 99%

Effects of Exogenous Selenium Application on the Growth of Sensitive and Tolerant Sorghum Plants Under Salt Stress

Gadelha¹,

Freitas²,

Paula³

et al. 2017

Anais Do IV Inovagri International Meeting - 2017

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Sorghum (Sorghum bicolor) is an important species for semiarid regions, such as Brazilian Northeast, where soil salinization and water quality is becoming a striking problem.Several research centers have evaluated the role of different compounds capable to induce changes in plant metabolism and improve salt tolerance. For some abiotic stress, selenium (Se) emerges as an alternative to activate plant defense responses; however, its involvement in tolerance to salt stress remain poorly understood. Thus, this work aimed to evaluate the effects of exogenous selenium application on the growth of sorghum plants under salt stress. Sorghum plants from CSF 20 (salt-tolerant) and CSF 18 (salt-sensitive) genotypes were grown in nutrient solutions containing sodium selenite (Na2SeO3) at 0 (control), 2, 4, 8 and 16 μM, and subjected to 75 mM NaCl-stress. The analyses were done after ten days of saline treatments. Overall, the benefits effects of Se were observed only in sorghum plants from salt-sensitive genotype, whereas no expressive modulation was registered in the salt tolerant one. Although leaf area and root dry mass were severely decreased by salt stress, the salt negative effects were almost completely abolished by 16 μM-Se supply in salt-sensitive genotype; nonetheless, the same responses were not observed for dry mass of leaves. In conclusion, selenium supply may constitute a strategy to overcome salt damage in S. bicolor growth depending on dose and plant genotype. Diversos centros de pesquisa têm avaliado o papel de diferentes compostos na indução de alterações no metabolismo das plantas e na melhora da tolerância ao estresse salino. Para alguns estresses abióticos, o selênio (Se) surge como uma alternativa que induz respostas de defesa de plantas, no entanto seu envolvimento na tolerância de plantas ao estresse salino permanece pobremente compreendido. Assim, este trabalho teve como objetivo avaliar os efeitos da aplicação exógena de Se no crescimento de plantas de sorgo sob estresse salino. Plantas de sorgo dos genótipos CSF 20 (tolerante a sal) e CSF 18 (sensível a sal) foram cultivadas em soluções nutritivas contendo selenito de sódio (Na2SeO3) a 0 (controle), 2, 4, 8 e 16 μM e submetidas a estresse salino com NaCl a 75 mM. As análises foram feitas após dez dias dos tratamentos salinos. Em geral, os efeitos benéficos do Se foram observados apenas em plantas de sorgo do genótipo sensível ao sal, enquanto que nenhuma modulação expressiva foi registrada no tolerante. Embora a área foliar e a massa seca da raiz tenham sido severamente diminuídas pelo estresse salino, os efeitos negativos do sal foram quase completamente eliminados pelo fornecimento de Se a 16 μM no genótipo sensível. Contudo, as mesmas respostas não foram observadas para massa seca de folhas. Desta forma, o fornecimento de selênio pode constituir uma estratégia para superar os danos causados pelo estresse salino no crescimento de S. bicolor, porém seus efeitos são dependentes da dose e do genótipo da planta. KEYWORDS:

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Selenium Promotes the Growth and Photosynthesis of Tomato Seedlings Under Salt Stress by Enhancing Chloroplast Antioxidant Defense System

Cited by 190 publications

References 46 publications

Salt response of photosynthetic electron transport system in wheat cultivars with contrasting tolerance

Salt response of photosynthetic electron transport system in wheat cultivars with contrasting tolerance

Selenite is More Efficient than Selenate in Alleviation of Salt Stress in Lettuce Plants

Effects of Exogenous Selenium Application on the Growth of Sensitive and Tolerant Sorghum Plants Under Salt Stress

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