Nurturing growth with excellence: PMBP goes monthly in its Silver Jubilee year!

Raghuram, Nandula; Singh, Rana P.

doi:10.1007/s12298-020-00767-5

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…Besides the direct influence of salinity on plants, a common consequence of salinity is induction of excessive accumulation of reactive oxygen species (ROS) which can cause peroxidation of lipids, oxidation of protein, inactivation of enzymes, DNA alteration, and/or interact with other important constituents of plant cells ( Kala, 2015 , Shafiq et al, 2020 ). Soil salinity can lead to stomatal closure, which reduces CO 2 availability in the leaves and inhibits carbon fixation, exposing chloroplasts to excessive excitation energy which in turn increase the production of ROS such as superoxide (O 2 •– ), hydrogen peroxide (H 2 O 2 ), hydroxyl radical (OH • ), and singlet oxygen ( 1 O 2 ) ( Alam et al, 2020 , Ali et al, 2020 , Islam et al, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

“…The disruption of the balance between the production of ROS and antioxidant defense systems that triggers excessive accumulation of ROS and induces oxidative stress in plants is one of the most significant consequences of salt stress ( Saleem et al, 2020a , Saleem et al, 2020f , Saleem et al, 2020h ). Notably, both enzymatic and non-enzymatic antioxidant defense systems under extreme salinity stresses maintain the balance between detoxification and ROS generation ( Islam et al, 2016 , Kala, 2015 , Shafiq et al, 2020 ). These ROS include: hydrogen peroxide (H 2 O 2 ), singlet oxygen ( 1/2 O 2 ), superoxide anion (O 2 •– ), hydroxyl (HO • ), alkoxyl (RO • ), peroxyl (RO 2 • ), and organic hydroperoxide (ROOH) and can scavenged by varieties of antioxidants such as superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) and ascorbate peroxidase (APX) ( Javed et al, 2021 , Rehman et al, 2019 , Zaheer et al, 2020c ).…”

Section: Introductionmentioning

confidence: 99%

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Foliar application of ascorbic acid enhances salinity stress tolerance in barley (Hordeum vulgare L.) through modulation of morpho-physio-biochemical attributes, ions uptake, osmo-protectants and stress response genes expression

Hassan

Amjad

Saleem

et al. 2021

Saudi Journal of Biological Sciences

101

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Barley ( Hordeum vulgare L.) is a major cereal grain and is known as a halophyte (a halophyte is a salt-tolerant plant that grows in soil or waters of high salinity). We therefore conducted a pot experiment to explore plant growth and biomass, photosynthetic pigments, gas exchange attributes, stomatal properties, oxidative stress and antioxidant response and their associated gene expression and absorption of ions in H. Vulgare . The soil used for this analysis was artificially spiked at different salinity concentrations (0, 50, 100 and 150 mM) and different levels of ascorbic acid (AsA) were supplied to plants (0, 30 and 60 mM) shortly after germination of the seed. The results of the present study showed that plant growth and biomass, photosynthetic pigments, gas exchange parameters, stomatal properties and ion uptake were significantly ( p < 0.05) reduced by salinity stress, whereas oxidative stress was induced in plants by generating the concentration of reactive oxygen species (ROS) in plant cells/tissues compared to plants grown in the control treatment. Initially, the activity of antioxidant enzymes and relative gene expression increased to a saline level of 100 mM, and then decreased significantly ( P < 0.05) by increasing the saline level (150 mM) in the soil compared to plants grown at 0 mM of salinity. We also elucidated that negative impact of salt stress in H. vulgare plants can overcome by the exogenous application of AsA, which not only increased morpho-physiological traits but decreased oxidative stress in the plants by increasing activities of enzymatic antioxidants. We have also explained the negative effect of salt stress on H. vulgare can decrease by exogenous application of AsA, which not only improved morpho-physiological characteristics, ions accumulation in the roots and shoots of the plants, but decreased oxidative stress in plants by increasing antioxidant compounds (enzymatic and non-enzymatic). Taken together, recognizing AsA's role in nutrient uptake introduces new possibilities for agricultural use of this compound and provides a valuable basis for improving plant tolerance and adaptability to potential salinity stress adjustment.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Foliar application of ascorbic acid enhances salinity stress tolerance in barley (Hordeum vulgare L.) through modulation of morpho-physio-biochemical attributes, ions uptake, osmo-protectants and stress response genes expression

Hassan

Amjad

Saleem

et al. 2021

Saudi Journal of Biological Sciences

101

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“…tauschii acquired a locus related to the HKT1;4 . HKT plays an important role in regulating Na + and K + transport and maintaining their homeostasis in plants [ 40 ]. HKT family genes were recognized as Na + transporters in rice and wheat plants and arbitrate Na + reclamation from xylem HKT1;5 is also expressed in parenchyma cells close to xylem cells to prevent Na + overaccumulation in shoots by blocking Na + transport to leaves.…”

Section: Discussionmentioning

confidence: 99%

Genetic Diversity and Synergistic Modulation of Salinity Tolerance Genes in Aegilops tauschii Coss

Abbas

Cui

et al. 2021

Plants

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Aegilops tauschii Coss. (2n = 2x = 14, DD) is a problematic weed and a rich source of genetic material for wheat crop improvement programs. We used physiological traits (plant height, dry weight biomass, Na+ and K+ concentration) and 14 microsatellite markers to evaluate the genetic diversity and salinity tolerance in 40 Ae. tauschii populations. The molecular marker allied with salinity stress showed polymorphisms, and a cluster analysis divided the populations into different groups, which indicated diversity among populations. Results showed that the expression level of AeHKT1;4 and AeNHX1 were significantly induced during salinity stress treatments (50 and 200 mM), while AeHKT1;4 showed relative expression in roots, and AeNHX1 was expressed in leaves under the control conditions. Compared with the control conditions, the expression level of AeHKT1;4 significantly increased 1.7-fold under 50 mM salinity stress and 4.7-fold under 200 mM salinity stress in the roots of Ae. tauschii. AeNHX1 showed a relative expression level of 1.6-fold under 50 mM salinity stress and 4.6-fold under 200 mM salinity stress compared with the control conditions. The results provide strong evidence that, under salinity stress conditions, AeHKT1;4 and AeNHX1 synergistically regulate the Na+ homeostasis through regulating Na+ transport in Ae. tauschii. AeNHX1 sequestrated the Na+ into vacuoles, which control the regulation of Na+ transport from roots to leaves under salinity stress conditions in Ae. tauschii.

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Nurturing growth with excellence: PMBP goes monthly in its Silver Jubilee year!

Cited by 2 publications

References 2 publications

Foliar application of ascorbic acid enhances salinity stress tolerance in barley (Hordeum vulgare L.) through modulation of morpho-physio-biochemical attributes, ions uptake, osmo-protectants and stress response genes expression

Foliar application of ascorbic acid enhances salinity stress tolerance in barley (Hordeum vulgare L.) through modulation of morpho-physio-biochemical attributes, ions uptake, osmo-protectants and stress response genes expression

Genetic Diversity and Synergistic Modulation of Salinity Tolerance Genes in Aegilops tauschii Coss

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