Hormones-induced modifications in the response of wheat flag leaf to NaCl

Aldesuquy, H. S.

doi:10.1007/bf02908845

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…concentration as compared to salinized plants. These results agree with Aldesuquy (1995) who reported that GA 3 reduced the accumulation of toxic ions in plant tissues under saline conditions; and Athar et al (2008) who suggested that the protection of wheat plants against salt stress by an exogenous supply of AsA is caused indirectly as a result of its effect on K ? uptake, which plays an essential role in many metabolic processes.…”

Section: Discussionsupporting

confidence: 93%

Effects of ascorbic acid and gibberellin A3 on alleviation of salt stress in common bean (Phaseolus vulgaris L.) seedlings

et al. 2012

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Salinity, a severe environmental factor, has limited the growth and productivity of crops. Many compounds have been applied to minimize the harmful effects of salt stress on plant growth. An experiment was conducted to investigate the interactive effects of exogenous ascorbic acid (AsA) and gibberellic acid (GA 3 ) on common bean (Phaseolus vulgaris L. cv. Naz) seedlings under salt stress. The changes of growth parameters, photosynthetic and non-photosynthetic pigments and potassium content showed that the addition of 1 mM AsA and/or 0.05 mM GA 3 considerably decreased the oxidative damage in common bean plants treated with 200 mM NaCl. The NaCl-stressed seedlings exposed to AsA or GA 3 , specifically in their combination, exhibited an improvement in sodium accumulation in both roots and shoots, as compared to NaCl-treated plants. NaCl treatment increased hydrogen peroxide (H 2 O 2 ) content and lipid peroxidation indicated by accumulation of malondialdehyde (MDA), whereas the interaction of AsA with GA 3 decreased the amounts of MDA and H 2 O 2 . In the meantime, interactive effect of these substances enhanced protein content and the activity of the antioxidant enzyme, guaiacol peroxidase, in common bean plants under salt stress. It was concluded that synergistic interaction between AsA and GA 3 could alleviate the adverse effects of salinity on P. vulgaris seedlings.

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Section: Discussionsupporting

confidence: 93%

Effects of ascorbic acid and gibberellin A3 on alleviation of salt stress in common bean (Phaseolus vulgaris L.) seedlings

et al. 2012

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“…Results from this study showed that with an increase in salt concentration, Na + was increased, while K + and Ca 2+ ions were decreased. GA priming reduced the concentration of toxic ions like Na + in some treatments and also increased K + but the increase was not significant; the results correlate with Aldesuquy (1995) who described that priming with GA3 reduced the accumulation of Na + and increased K + /Na + ratio in flag leaves of wheat under salt treatments. Possibly it is due to antagonistic effect of ionic pumps located at membranes that allows certain level of a particular ion to enter; hence the Na + being cation will definitely remove some K + to compensate itself in the cell.…”

Section: Discussionsupporting

confidence: 78%

GA Mediated OsZAT-12 Expression Improves Salt Resistance of Rice

Imran¹,

Kamran²,

Shafiq‐ur‐Rehman³

et al. 2016

IJAB

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Abiotic stress prevents plants from absorbing available nutrients resulting in yield loss and soil contamination. Growth regulators like gibberellic acid (GA) may improve plant growth under stress conditions. This study was conducted to evaluate the role of GA on the rice performance under saline conditions and to investigate its effects on regulatory gene expression by GA-mediated seed priming. Seeds of rice variety KSK 282 were primed in GA solution (0, 50, 100 and 150 ppm) and grown under different salt (NaCl) concentrations (0, 50, 100 and 150 mM). Increase in salt concentration led to decrease in rice growth. GA priming reversed the negative effects of salt stress and enhanced different growth attributes like germination, seedling growth and weight, while decreased the concentration of toxic ions such as Na + in some treatments. However, GA priming was not very effective on Chlorophyll a, b (Chl-a, Chl-b) and total carotene contents. Reverse transcription polymerase chain reaction (RT-PCR) approach was used to study the effect of GA-mediated seed priming on the expression of two stress responsive genes, OsZat 12-1 (LOC_Os01g62130 also called ZOS1-14 -C2H2 zinc finger protein) and OsZat 12-9 (LOC_Os01g62190 also called ZOS1-15 -C2H2 zinc finger protein). There was no or very low expression of OsZat 12-1 and OsZat 12-9 in hydroprimed seeds under all salt stress conditions tested, while induction of gene expression was observed for plants raised from GA primed seeds under salt stress. In conclusion, GA regulated the growth at early stages of rice life cycle by inducing regulatory genes expression; therefore it is noteworthy that while studying salinity factor, the induction of genetic determinants (genes) by plant growth regulators should also be considered.

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Effect of ABA seed pre-treatment on the response of wheat (Tritium aesitivum L.) to salinity, with special reference to plant growth, ion relations and protein patterns

Din¹,

Flowers

2002

Tasks for Vegetation Science

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Hormones-induced modifications in the response of wheat flag leaf to NaCl

Cited by 5 publications

References 18 publications

Effects of ascorbic acid and gibberellin A3 on alleviation of salt stress in common bean (Phaseolus vulgaris L.) seedlings

Effects of ascorbic acid and gibberellin A3 on alleviation of salt stress in common bean (Phaseolus vulgaris L.) seedlings

GA Mediated OsZAT-12 Expression Improves Salt Resistance of Rice

Effect of ABA seed pre-treatment on the response of wheat (Tritium aesitivum L.) to salinity, with special reference to plant growth, ion relations and protein patterns

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