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dc.contributor.authorChoi, Wonkyun
dc.contributor.authorBaek, Dongwon
dc.contributor.authorOh, Dongha
dc.contributor.authorPark, Jiyoung
dc.contributor.authorHong, Hyewon
dc.contributor.authorKim, Woeyeon
dc.contributor.authorBohnert, Hans Jürgen
dc.contributor.authorBressan, Ray Anthony
dc.contributor.authorPark, Hyeongcheol
dc.contributor.authorYun, Daejin
dc.date.accessioned2015-08-03T09:03:34Z
dc.date.available2015-08-03T09:03:34Z
dc.date.issued2011-04
dc.identifier.citationChoi, W., Baek, D., Oh, D.-H., Park, J., Hong, H., Kim, W.-Y., … Yun, D.-J. (2011). NKS1, Na+- and K+-sensitive 1, regulates ion homeostasis in an SOS-independent pathway in Arabidopsis. Phytochemistry, 72(4-5), 330–336. doi:10.1016/j.phytochem.2010.12.005
dc.identifier.issn00319422
dc.identifier.pmid21227472
dc.identifier.doi10.1016/j.phytochem.2010.12.005
dc.identifier.urihttp://hdl.handle.net/10754/561741
dc.description.abstractAn Arabidopsis thaliana mutant, nks1-1, exhibiting enhanced sensitivity to NaCl was identified in a screen of a T-DNA insertion population in the genetic background of Col-0 gl1 sos3-1. Analysis of the genome sequence in the region flanking the T-DNA left border indicated two closely linked mutations in the gene encoded at locus At4g30996. A second allele, nks1-2, was obtained from the Arabidopsis Biological Resource Center. NKS1 mRNA was detected in all parts of wild-type plants but was not detected in plants of either mutant, indicating inactivation by the mutations. Both mutations in NKS1 were associated with increased sensitivity to NaCl and KCl, but not to LiCl or mannitol. NaCl sensitivity was associated with nks1 mutations in Arabidopsis lines expressing either wild type or alleles of SOS1, SOS2 or SOS3. The NaCl-sensitive phenotype of the nks1-2 mutant was complemented by expression of a full-length NKS1 allele from the CaMV35S promoter. When grown in medium containing NaCl, nks1 mutants accumulated more Na+ than wild type and K +/Na+ homeostasis was perturbed. It is proposed NKS1, a plant-specific gene encoding a 19 kDa endomembrane-localized protein of unknown function, is part of an ion homeostasis regulation pathway that is independent of the SOS pathway. © 2011 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipThis work was supported by Grants from the World Class University Program (Grant No. R32-10148) funded by the Ministry of Education, Science and Technology and the Biogreen 21 Program (Grant No. 20070301034030) of the Rural Development Administration in Korea. W.C. is supported by a scholarship from the Brain Korea 21 program of the Ministry of Education, Science and Technology.
dc.publisherElsevier BV
dc.subjectArabidopsis thaliana
dc.subjectCruciferae
dc.subjectEndomembrane system
dc.subjectIon homeostasis
dc.subjectNaCl stress
dc.subjectNKS1
dc.subjectSalt stress
dc.titleNKS1, Na+- and K+-sensitive 1, regulates ion homeostasis in an SOS-independent pathway in Arabidopsis
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.identifier.journalPhytochemistry
dc.contributor.institutionDivision of Applied Life Science (BK21 Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, South Korea
dc.contributor.institutionDivision of Applied Life Science (BK21 Program), Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, South Korea
dc.contributor.institutionDepartment of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
dc.contributor.institutionDepartment of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
dc.contributor.institutionCenter for Plant Environmental Stress Physiology, Purdue University, West Lafayette, IN 47907, United States
kaust.personBressan, Ray Anthony


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