Regulation of Na+/H+ exchangers, Na+/K+ transporters, and lignin biosynthesis genes, along with lignin accumulation, sodium extrusion, and antioxidant defense, confers salt tolerance in alfalfa

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dc.authoridRahman, Md Atikur/0000-0001-6779-9599
dc.contributor.authorRahman, Md Atikur
dc.contributor.authorWoo, Jae Hoon
dc.contributor.authorLee, Sang-Hoon
dc.contributor.authorPark, Hyung Soo
dc.contributor.authorKabir, Ahmad Humayan
dc.contributor.authorRaza, Ali
dc.contributor.authorEl Sabagh, Ayman
dc.date.accessioned2024-12-24T19:31:06Z
dc.date.available2024-12-24T19:31:06Z
dc.date.issued2022
dc.departmentSiirt Üniversitesi
dc.description.abstractAccumulation of high sodium (Na+) leads to disruption of metabolic processes and decline in plant growth and productivity. Therefore, this study was undertaken to clarify how Na+/H+ exchangers and Na+/K+ transporter genes contribute to Na+ homeostasis and the substantial involvement of lignin biosynthesis genes in salt tolerance in alfalfa (Medicago sativa L.), which is poorly understood. In this study, high Na+ exhibited a substantial reduction of morphophysiological indices and induced oxidative stress indicators in Xingjiang Daye (XJD; sensitive genotype), while Zhongmu (ZM; tolerant genotype) remained unaffected. The higher accumulation of Na+ and the lower accumulation of K+ and K+/(Na+ + K+) ratio were found in roots and shoots of XJD compared with ZM under salt stress. The ZM genotype showed a high expression of SOS1 (salt overly sensitive 1), NHX1 (sodium/hydrogen exchanger 1), and HKT1 (high-affinity potassium transporter 1), which were involved in K+ accumulation and excess Na+ extrusion from the cells compared with XJD. The lignin accumulation was higher in the salt-adapted ZM genotype than the sensitive XJD genotype. Consequently, several lignin biosynthesis-related genes including 4CL2, CCoAOMT, COMT, CCR, C4H, PAL1, and PRX1 exhibited higher mRNA expression in salt-tolerant ZM compared with XJD. Moreover, antioxidant enzyme (catalase, superoxide dismutase, ascorbate peroxidase, and glutathione reductase) activity was higher in ZM relative to XJD. This result suggests that high antioxidant provided the defense against oxidative damages in ZM, whereas low enzyme activity with high Na+ triggered the oxidative damage in XJD. These findings together illustrate the ion exchanger, antiporter, and lignin biosysthetic genes involving mechanistic insights into differential salt tolerance in alfalfa.
dc.description.sponsorshipRDA Fellowship Program of National Institute of Animal Science and Cooperative Research Program for Agriculture Science and Technology Development; Rural Development Administration, Republic of Korea; [PJ01592501]
dc.description.sponsorshipFunding This study was supported by the RDA Fellowship Program of National Institute of Animal Science and Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01592501), Rural Development Administration, Republic of Korea.
dc.identifier.doi10.3389/fpls.2022.1041764
dc.identifier.issn1664-462X
dc.identifier.pmid36420040
dc.identifier.scopus2-s2.0-85142237867
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.3389/fpls.2022.1041764
dc.identifier.urihttps://hdl.handle.net/20.500.12604/7817
dc.identifier.volume13
dc.identifier.wosWOS:000888313300001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherFrontiers Media Sa
dc.relation.ispartofFrontiers in Plant Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241222
dc.subjectabiotic stress
dc.subjectantioxidant defense
dc.subjection exchanger
dc.subjectsalinity stress
dc.subjectsodium transporter
dc.subjectphenylpropanoid
dc.titleRegulation of Na+/H+ exchangers, Na+/K+ transporters, and lignin biosynthesis genes, along with lignin accumulation, sodium extrusion, and antioxidant defense, confers salt tolerance in alfalfa
dc.typeArticle

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