Leaf ion homeostasis and plasma membrane H+-ATPase activity in Vicia faba change after extra calcium and potassium supply under salinity

Morgan, Sherif H.; Maity, Pooja Jha; Geilfus, Christoph‐Martin; Lindberg, Sylvia; Mühling, Karl H.

doi:10.1016/j.plaphy.2014.06.010

Cited by 47 publications

(26 citation statements)

References 33 publications

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“…Also, in Vicia faba given 10 m m extra K + supply both fresh and dry weights of leaves improved under salinity treatment (Morgan et al . ). In experiments with maize a transitional stage was suggested when growth was reduced due to osmotic stress as well as ion toxicity (Suemer et al .…”

Section: Discussionmentioning

confidence: 97%

Potassium‐induced decrease in cytosolic Na⁺ alleviates deleterious effects of salt stress on wheat (Triticum aestivum L.)

et al. 2019

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Accumulation of NaCl in soil causes osmotic stress in plants, and sodium (Na + ) and chloride (Cl À ) cause ion toxicity, but also reduce the potassium (K + ) uptake by plant roots and stimulate the K + efflux through the cell membrane. Thus, decreased K + /Na + ratio in plant tissue lead us to hypothesise that elevated levels of K + in nutrient medium enhance this ratio in plant tissue and cytosol to improve enzyme activation, osmoregulation and charge balance.• In this study, wheat was cultivated at different concentrations of K + (2.2, 4.4 or 8.8 mM) with or without salinity (1, 60 or 120 mM NaCl) and the effects on growth, root and shoot Na + and K + distribution and grain yield were determined. Also, the cytosolic Na + concentration was investigated, as well as photosynthesis rate and water potential.• Salinity reduced fresh weight of both shoots and roots and dry weight of roots. The grain yield was significantly reduced under Na + stress and improved with elevated K + fertilisation. Elevated K + level during cultivation prevented the accumulation of Na + into the cytosol of both shoot and root protoplasts. Wheat growth at vegetative stage was transiently reduced at the highest K + concentration, perhaps due to plants' efforts to overcome a high solute concentration in the plant tissue, nevertheless grain yield was increased at both K + levels.• In conclusion, a moderately elevated K + application to wheat seedlings reduces tissue as well as cytosolic Na + concentration and enhances wheat growth and grain yield by mitigating the deleterious effects of Na + toxicity.Plant Biology 21 (2019) 825-831

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Section: Discussionmentioning

confidence: 97%

Potassium‐induced decrease in cytosolic Na⁺ alleviates deleterious effects of salt stress on wheat (Triticum aestivum L.)

et al. 2019

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“…It was shown that PM H + -ATPase family members play a wellknown role in tolerance to abiotic stresses such as cold (Iswari and Palta, 1989;Martz et al 2006), drought (Gong et al 2001;Du et al 2015) and acid rain (Liang et al 2015). Many studies also documented the importance of PM H + -ATPase in response to salinity stress in Arabidopsis and cereal plants such as wheat and rice (Ayala et al 1997;Vitart et al 2001;Roy et al 2005;Gévaudant et al 2007;Morgan et al 2014;Falhof et al 2016). Second gene (Os01g0963000) encodes a peroxidase BP1 protein.…”

Section: Discussionmentioning

confidence: 99%

Genome-wide association study (GWAS) to identify salt-tolerance QTLs carrying novel candidate genes in rice during early vegetative stage

Nayyeripasand

Garoosi

Ahmadikhah

2020

Preprint

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Background: Rice is considered as a salt-sensitive plant, particularly at early vegetative stage, and its production is suffered from salinity due to expansion of salt affected land in areas under cultivation. Hence, significant increase of rice productivity on salinized lands is really necessary. Today genome-wide association study (GWAS) is a method of choice for fine mapping of QTLs involved in plant responses to abiotic stresses including salinity stress at early vegetative stage. In this study using >33,000 SNP markers we identified rice genomic regions associated to early stage salinity tolerance. Eight salinity-related traits including shoot length (SL), root length (RL), root dry weight (RDW), root fresh weight (RFW), shoot fresh weight (SFW), shoot dry weight (SDW), relative water content (RWC) and TW, and 4 derived traits including SL-R, RL-R, RDW-R and RFW-R in a diverse panel of rice consisted of 202 varieties were evaluated under salinity (100 mM NaCl) and normal conditions in growth chamber. Genome-wide association study (GWAS) was applied based on MLM(+Q+K) model.Results: Under stress conditions 151 trait-marker associations were identified that were scattered on 10 chromosomes of rice that arranged in 29 genomic regions. A genomic region on chromosome 1 (11.26 Mbp) was identified which co-located with a known QTL region SalTol1 for salinity tolerance at vegetative stage. A candidate gene ( Os01g0304100 ) was identified in this region which encodes a cation chloride cotransporter. Furthermore, on this chromosome two other candidate genes, Os01g0624700 (24.95 Mbp) and Os01g0812000 (34.51 Mbp), were identified that encode a WRKY transcription factor ( WRKY 12 ) and a transcriptional activator of gibberellin-dependent alpha-amylase expression ( GAMyb ), respectively. Also, a narrow interval on the same chromosome (40.79-42.98 Mbp) carries 12 candidate genes, some of them were not so far reported for salinity tolerance at seedling stage. Two of more interesting genes are Os01g0966000 and Os01g0963000 , encoding a plasma membrane (PM) H + -ATPase and a peroxidase BP1 protein. A candidate gene was identified on chromosome 2 ( Os02g0730300 at 30.4 Mbp) encoding a high affinity K + transporter (HAK). On chromosome 6 a DnaJ-encoding gene and pseudouridine synthase gene were identified. Two novel genes on chromosome 8 including the ABI/VP1 transcription factor and retinoblastoma-related protein (RBR), and 3 novel genes on chromosome 11 including a Lox, F-box and Na + /H + antiporter, were also identified.Conclusion: Known or novel candidate genes in this research were identified that can be used for improvement of salinity tolerance in molecular breeding programmes of rice. Further study and identification of effective genes on salinity tolerance by the use of candidate gene-association analysis can help to precisely uncover the mechanisms of salinity tolerance at molecular level. A time dependent relationship between salt tolerance and expression level of candidate genes could be recognized.

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“…Ca 2+ plays a fundamental role in regulating root potassium nutrition and salt tolerance (Liu and Zhu, 1997;Kinrade, 1999;Renault and Afifi, 2009) and increase PM-H + -ATPase activity (Hu-Cheng et al, 2003, Morgan et. al., 2014.…”

Section: Discussionmentioning

confidence: 99%

Changes in Yield and Chloroplast Mg2+-ATPase Activity of Wheat (Triticum aestivum L.) in Response to Soil Salinity and Nutrient Supply

Kamh

El-Hamrawy

2017

Alexandria Science Exchange Journal: An International Quarterly

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Under stress conditions such as salinity and drought, plant tolerance depends on upregulating ATPase activity. A greenhouse and a field experiments were conducted to investigate the regulation of chloroplast Mg +2 -ATPase activity in wheat in response to soil salinity and nutrient supply.In the greenhouse, plants were imposed irrigation with three water salinities; 0.4, 4.0, and 8.0 dSm -1 with different sub-treatments of nutrient applications. Wheat yield was negatively correlated with soil salinity, presenting threshold at 6 dsm -1 followed by yield reduction with slope 7.4 % per unit dsm The variation in wheat response in the greenhouse to that in the field may be attributed to the greenhouse conditions that impaired photosynthesis activity and induced catabolic ATP hydrolysis.

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Leaf ion homeostasis and plasma membrane H+-ATPase activity in Vicia faba change after extra calcium and potassium supply under salinity

Cited by 47 publications

References 33 publications

Potassium‐induced decrease in cytosolic Na⁺ alleviates deleterious effects of salt stress on wheat (Triticum aestivum L.)

Potassium‐induced decrease in cytosolic Na⁺ alleviates deleterious effects of salt stress on wheat (Triticum aestivum L.)

Genome-wide association study (GWAS) to identify salt-tolerance QTLs carrying novel candidate genes in rice during early vegetative stage

Changes in Yield and Chloroplast Mg2+-ATPase Activity of Wheat (Triticum aestivum L.) in Response to Soil Salinity and Nutrient Supply

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Leaf ion homeostasis and plasma membrane H+-ATPase activity in Vicia faba change after extra calcium and potassium supply under salinity

Cited by 47 publications

References 33 publications

Potassium‐induced decrease in cytosolic Na+ alleviates deleterious effects of salt stress on wheat (Triticum aestivum L.)

Potassium‐induced decrease in cytosolic Na+ alleviates deleterious effects of salt stress on wheat (Triticum aestivum L.)

Genome-wide association study (GWAS) to identify salt-tolerance QTLs carrying novel candidate genes in rice during early vegetative stage

Changes in Yield and Chloroplast Mg2+-ATPase Activity of Wheat (Triticum aestivum L.) in Response to Soil Salinity and Nutrient Supply

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Potassium‐induced decrease in cytosolic Na⁺ alleviates deleterious effects of salt stress on wheat (Triticum aestivum L.)

Potassium‐induced decrease in cytosolic Na⁺ alleviates deleterious effects of salt stress on wheat (Triticum aestivum L.)