Plant salt-tolerance mechanism: A review

Liang, Wan; Xiang, Ma; Wan, Peng; Liu, Lianyin

doi:10.1016/j.bbrc.2017.11.043

Cited by 629 publications

(373 citation statements)

References 47 publications

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“…Salinity reduced seed germination in plants [98][99][100][101], even in halophytes [102][103][104], delaying or preventing germination beyond tolerance limits [105]. Although the issue of critical values' determination for salinity is complex and controversial-due to the diversity of saline environments and responses induced by salts, such as: osmotic and oxidative stresses, ion-toxicity and/or nutritional disorder [106]-generalized relationships between germination curves and salinity were suggested. Following the Läuchli and Grattan classification [107], a delay in germination onset (without differences in rate and thus in final germination percentage) sorted moderate from low salinity levels, while a further delay along with significant final germination percent reduction characterized high salinity levels.…”

Section: Salinity Effect In Laboratory and In The Fieldmentioning

confidence: 99%

Salinity Tolerance in Fraxinus angustifolia Vahl.: Seed Emergence in Field and Germination Trials

Raddi

Mariotti

Sofía

et al. 2019

Forests

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The effect of salinity on seed germination/emergence in narrow-leaved ash (Fraxinus angustifolia) was studied both under field and laboratory conditions, in order to detect critical values to NaCl exposure. Research Highlights: Novel statistical methods in germination ecology has been applied (i) to determine the effects of chilling length and salinity (up to 150 mM NaCl) on Fraxinus angustifolia subsp. oxycarpa seed emergence, and (ii) to estimate threshold limits treating germination response to salinity as a biomarker. Background and Objectives: Salinity cut values at germination stage had relevant interest for conservation and restoration aims of Mediterranean floodplain forests in coastal areas subjected to salt spray exposure and/or saline water introgression. Results: Salinity linearly decreased germination/emergence both in the field and laboratory tests. Absence of germination was observed at 60 mM NaCl in the field (70-84 mM NaCl depending on interpolation model) and at 150 mM NaCl for 4-week (but not for 24-week) chilling. At 50 mM NaCl, germination percentage was 50% (or 80%) of control for 4-week (or 24-week) chilling. Critical values for salinity were estimated between freshwater and 50 (75) mM NaCl for 4-week (24-week) chilling by Bayesian analysis. After 7-week freshwater recovery, critical cut-off values included all tested salinity levels up to 150 mM NaCl, indicating a marked resumption of seedling emergence. Conclusions: Fraxinus angustifolia is able to germinate at low salinity and to tolerate temporarily moderate salinity conditions for about two months. Prolonged chilling widened salinity tolerance.Forests 2019, 10, 940 2 of 18 and late (2100) century [22]. The global conservation awareness for these ecosystems-which nowadays resulted in a protected status under the international biodiversity-related multilateral environmental agreements [23] for more than one third of swamps, flooded forests and coastal wetlands-might not be sufficient to prevent degradation risks arisen from interactions with large-scale processes, land-use changes and agricultural land-use intensification. Consequently, undertaking practice and policy actions to prevent wetland degradation and loss remains a focus of international processes, such as the Convention on Biological Diversity (CBD) Aichi Targets and the United Nations (UN) Sustainable Development Goals (SDGs). In coastal floodplains, human pressure, altered water flows, contaminants from internal urban and agricultural lands, and increased soil salinity [24][25][26] were particularly relevant, and science-based management options should be urgent [27] to face adverse climate-related impacts exacerbated by increasing human-induced pressures [28][29][30].F. angustifolia coastal alluvial forests were mainly judged under unfavorable (habitat 91F0) or inadeguate (habitat 91E0 * ) states, following the 2007-2012 EU Habitat Directive Art. 17 assessment [31]. The major threats to this species were currently considered to be high fragmentation with connectivity loss a...

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Section: Salinity Effect In Laboratory and In The Fieldmentioning

confidence: 99%

Salinity Tolerance in Fraxinus angustifolia Vahl.: Seed Emergence in Field and Germination Trials

Raddi

Mariotti

Sofía

et al. 2019

Forests

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“…These stresses can detrimentally affect physiological, biochemical and molecular processes including water relations, transpiration, photosynthesis, cellular homeostasis, hormonal and enzymatic activities, and gene expression patterns in plants (Deinlein et al 2014;Yang and Guo 2018). However, several mechanisms such as active Na + efflux, inhibition of Na + influx, vacuolar sequestration of Na + , up-regulation of antioxidant defense systems, accumulation of compatible osmolytes have evolved in plants to mitigate salinity stress (Zhang and Shi 2013;Gupta and Huang 2014;Liang et al 2018). Unfortunately, despite these tolerance mechanisms, salinity stress remarkably reduces growth and yields of many crop plants (Parida and Das 2005;Abdi et al 2016;Askari-Khorasgani et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Plant growth-promoting bacteria and silicon fertilizer enhance plant growth and salinity tolerance inCoriandrum sativum

Al-Garni

Khan

Bahieldin

2019

Journal of Plant Interactions

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Plant growth-promoting bacteria (PGPB) and silicon (Si) can augment salinity tolerance in plants. In this study, 25 potential PGPB were isolated from alfalfa rhizosphere and screened for their ability to synthesize indole-3-acetic acid, 1-aminocyclopropane-1-carboxylate deaminase, and solubilize tricalcium phosphate. Two promising strains were tentatively identified as Pseudomonas pseudoalcaligenes (KB-10) and P. putida (KB-25) based on phenotypic, biochemical and 16S rRNA gene phylogeny. Subsequently, a pot experiment was conducted to evaluate the effectiveness of KB-10 and KB-25 treatment, alone or in combination with Si fertilizer, in alleviating salinity stress in coriander. The results showed that treatment with PGPB strains and/or Si significantly increased relative water content, concentrations of photosynthetic pigments, peroxidase activity, total biomass, salt tolerance index, and reduced salt-induced total phenolic contents. Overall data suggested that the combined application of PGPB and Si fertilizer could be a feasible and effective approach to improve growth and salinity tolerance in coriander. ARTICLE HISTORY

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“…High salt concentrations increase gene expression to a greater extent compared with low salt concentrations. Some studies have demonstrated that concentrations greater than 200 mmol/L are common in tissue; however, the concentration might completely repress the enzyme activity [30]. The glutathionylation of GAPC1 might reduce or avoid this inhibition.…”

Section: Phenotype and Lcgac Expression Analysis Under Salt And Alkalmentioning

confidence: 99%

Characterization of LcGAPC and its transcriptional response to salt and alkali stress in two ecotypes of Leymus chinensis (Trin.) Tzvelev

Meng

Yang

et al. 2020

Biotechnology & Biotechnological Equipment

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Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is a housekeeping protein which plays various roles in non-metabolic processes in addition to its role in glucose catabolism. There are several GAPDH isoforms in plant cells. In this study, we cloned the full-length cDNA encoding the isoform GAPC in two ecotypes of Leymus chinensis (Trin.) Tzvelev, gray-green type and yellow-green type. The LcGAPC sequence includes an open reading frame (ORF) of 1014 bp encoding 337 amino acids. The predicted molecular weight is 36.5 kDa, and the pI is 6.19. The mRNA expression of LcGAPC decreased at 24 h and then increased significantly after 7 d after 400 mmol/L NaCl stress. At 200 mmol/L mixed alkali stress (NaHCO 3 :Na 2 CO 3 ¼9:1), the LcGAPC expression level gradually increased as time increased in the two ecotypes of L. chinensis. The results suggested that LcGAPC is a stress-inducible gene that might play a role in the salt and alkali stress response. This study provided a basis to further study the mechanism of expression characteristics under salt and alkali stress conditions of L. chinensis. ARTICLE HISTORY

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Plant salt-tolerance mechanism: A review

Cited by 629 publications

References 47 publications

Salinity Tolerance in Fraxinus angustifolia Vahl.: Seed Emergence in Field and Germination Trials

Salinity Tolerance in Fraxinus angustifolia Vahl.: Seed Emergence in Field and Germination Trials

Plant growth-promoting bacteria and silicon fertilizer enhance plant growth and salinity tolerance inCoriandrum sativum

Characterization of LcGAPC and its transcriptional response to salt and alkali stress in two ecotypes of Leymus chinensis (Trin.) Tzvelev

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