Exogenous proline and trehalose promote recovery of rice seedlings from salt-stress and differentially modulate antioxidant enzymes and expression of related genes

Nounjan, Noppawan; Phan, Tuan‐Nghia; Theerakulpisut, Piyada

doi:10.1016/j.jplph.2012.01.004

Cited by 321 publications

(187 citation statements)

References 54 publications

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“…Proline has an added advantage under soil salinity as it may lower down Na uptake and increase K uptake, thereby protecting plants from the detrimental effects of Na. There are reports that exogenously supplied proline reduces Na + accumulation and increases K + /Na + ratio in plants under salt stress (Ahmed et al, 2011;Abd ElSamad et al, 2011;Nounjan et al, 2012;Sobahan et al, 2012). In this study, salinity decreased K + /Na + ratio in both maize varieties whereas this K + /Na + ratio increased by proline application at 25 mM NaCl stress.…”

Section: K + /Namentioning

confidence: 42%

Exogenous proline enhances nutrient uptake and confers tolerance to salt stress in maize (Zea mays L.)

Alam

Islam

et al. 2017

Progress. Agric.

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Proline accumulation is the main adaptive mechanism to salinity in plants. The pot experiments were carried out to mitigate the adverse effects of NaCl stress on BARI Hybrid Maize-5 and Hybrid Maize Pacific-987 by exogenous application of proline. Plants were exposed to different concentrations of NaCl at vegetative stage. Proline solutions were sprayed over maize leaves at both vegetative and tasseling stages. NaCl stress caused significant reductions in plant growth of maize. NaCl stress at 50 mM drastically reduced the growth of maize plant. Salt stress also reduced reproductive growth, grain yield, chlorophyll contents, K+/Na+ ratio and nutrient (NPS) uptake in both maize varieties. Exogenously applied proline improved growth and grain yield of BARI Hybrid Maize-5 at 25 mM NaCl stress condition. Additionally, BARI Hybrid Maize-5 conferred tolerance to 50 mM NaCl stress with 25 mM proline. Proline application significantly increased K+/Na+ ratio and nutrient uptake by maize under salt stress. The present study suggests that proline improves salt tolerance of maize by increasing the K+/Na+ ratio and nutrient uptake, particularly P uptake.Progressive Agriculture 27 (4): 409-417, 2016

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Section: K + /Namentioning

confidence: 42%

Exogenous proline enhances nutrient uptake and confers tolerance to salt stress in maize (Zea mays L.)

Alam

Islam

et al. 2017

Progress. Agric.

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“…The contributions of these antioxidants against salt stress is also reported by Nounjan et al (2012) in rice, Rasool, Ahmad, et al (2013) in chickpea, Ahmad, Ashraf, et al (2010), Ahmad, Jaleel, Salem, et al (2010) and in mulberry, and Ahmad et al (2012) in mustard. Generally, accumulation of antioxidants plays an important role in regulating the oxidative stress and ROS production during the growth under salt-stress conditions (Rasool, Hameed, et al 2013).…”

Section: Discussionmentioning

confidence: 66%

Alleviation of salt-induced adverse impact via mycorrhizal fungi inEphedra aphyllaForssk

Alqarawi

2014

Journal of Plant Interactions

143

104

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The current investigation was carried out to examine the role of arbuscular mycorrhizal fungi (AMF) in alleviating adverse effects of salt stress in Ephedra aphylla. The plants were exposed to 75 and 150 mM sodium chloride (NaCl) stress with and without application of AMF. Salt stress caused significant decrease in chlorophyll and carotenoid contents; however, the application of AMF restored the pigments content in salt-affected plants. Proline, phenols, and lipid peroxidation were increased with increasing concentration of NaCl, but lower accumulation has been reported in plants treated with AMF. NaCl stress also showed increase in different antioxidant enzymes activities (catalase, ascorbate peroxidase, peroxidase, glutathione reductase, and superoxide dismutase), and further increase was observed in plants treated with AMF. The nutrient uptake, Na + and Na/K ratio increased and potassium and phosphorus were decreased with increasing concentration of NaCl in the present study. However, the colonization with AMF significantly increased K + and P and reduced Na + uptake. It is concluded that presown soil treatment with AMF reduced severity of salt stress in E. aphylla through alterations in physiological parameters, antioxidants and uptake of nutrients.Keywords: arbuscular mycorrhizal fungi; Ephedra aphylla; salinity; antioxidant enzymes; ion accumulation IntroductionDesertification or the disappearance of vegetation from arid land is an increasing problem worldwide including Saudi Arabia (SA). Abiotic stress leads to loss of natural resources such as plant biomass, biodiversity, and imparts a great role in global warming. Among the abiotic stresses, salinity is one of the main factor that contributes to desertification of arid lands. Soil salinization has become a great challenge for rehabilitation of range lands and plant productivity (Alqarawi et al. 2014). Salinity not only reduces yield of plants but also disrupts the ecological balance of the area. Stress tolerance of plants is a complex phenomenon involving changes at morphological, physiological, biochemical, and molecular levels and are undoubtedly the most important response of plants to the adverse environmental conditions (Rasool, Hameed, et al. 2013;Shaheen et al. 2013;Ahmad et al. 2014;Alqarawi et al. 2014). Salinity causes nutritional disorders in plants which lead to deficiencies of several nutrients and drastically increasing Na + levels in the plant cells (Iqbal & Ashraf 2013). The adverse effects of salt stress causes imbalance in the synthesis of endogenous plant growth regulators (PGR), hence a number of changes take place which disturb growth and physiological processes such as plant cell permeability, respiration, energy transport, and photosynthesis in plant cells (Ahmad et al. 2012;Iqbal & Ashraf 2013). Moreover, the salt stress also causes oxidative stress through the generation of reactive oxygen species (ROS), such as hydrogen peroxide, superoxide ions, singlet oxygen, and hydroxyl radical. These ROS cause deleterious effects on mitoc...

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“…7). Moreover, proline plays vital role in wide range of protective responses including osmotic adjustment, stabilizer for cellular structure and reducing damage to photosynthetic apparatus (Nounjan et al, 2012). Hossain et al (2011) demonstrated that exogenous proline provided a protective action against abiotic stress-induced oxidative damage by reducing H2O2 and lipid peroxidation level and by enhancing antioxidant defense and methylglyoxal detoxification systems.…”

Section: Proline Content In Leavesmentioning

confidence: 99%

Effect of Salicylic Acid on the Growth, Photosynthetic Efficiency and Enzyme Activities of Leguminous Plant under Cadmium Stress

Alyemeni

Hayat

Wijaya

et al. 2014

Not Bot Hort Agrobot Cluj

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The present study was designed with an objective to elucidate the effect of the exogenous application of 10 -5 M of salicylic acid (SA) to the foliage of the chickpea plants exposed to 0, 25, 50 or 100 mg cadmium (Cd) per kg of soil. The foliage of the plants grown in soil amended with varying doses of Cd was sprayed with 10 -5 M of SA at 30 days after sowing (DAS). The plant samples were collected at 60 and 90 DAS to assess various parameters. The damage caused due to the Cd exposure was partially overcome by the exogenous application of SA. The SA treatment resulted in a significant increase of growth, photosynthesis, yield and the activity of antioxidative enzymes viz. catalase, peroxidase and superoxide dismutase in the plants exposed to 0, 25 or 50 mg Cd per kg of soil. However, the treatment did not prove to be fruitful in alleviating completely the stress generated by 100 mg Cd per kg of soil.

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Exogenous proline and trehalose promote recovery of rice seedlings from salt-stress and differentially modulate antioxidant enzymes and expression of related genes

Cited by 321 publications

References 54 publications

Exogenous proline enhances nutrient uptake and confers tolerance to salt stress in maize (Zea mays L.)

Exogenous proline enhances nutrient uptake and confers tolerance to salt stress in maize (Zea mays L.)

Alleviation of salt-induced adverse impact via mycorrhizal fungi inEphedra aphyllaForssk

Effect of Salicylic Acid on the Growth, Photosynthetic Efficiency and Enzyme Activities of Leguminous Plant under Cadmium Stress

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