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New allelic variants found in key rice salt-tolerance genes an association study

2013Journal article Open access
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dc.contributor.authorNegrao, Sonia
dc.contributor.authorAlmadanim, Maria Cecilia
dc.contributor.authorPires, Inês S.
dc.contributor.authorAbreu, Isabel A.
dc.contributor.authorMaroco, João Paulo
dc.contributor.authorCOURTOIS, Brigitte
dc.contributor.authorGregorio, Glenn B.
dc.contributor.authorMcNally, Kenneth
dc.contributor.authorOliveira, Maria Margarida
dc.date.accessioned2013-09-13T18:02:24Z
dc.date.available2013-09-13T18:02:24Z
dc.date.issued2013
dc.description.abstractSalt stress is a complex physiological trait affecting plants by limiting growth and productivity. Rice, one of the most important food crops, is rated as salt-sensitive. High-throughput screening methods are required to exploit novel sources of genetic variation in rice and further improve salinity tolerance in breeding programmes. To search for genotypic differences related to salt stress, we genotyped 392 rice accessions by EcoTILLING. We targeted five key salt-related genes involved in mechanisms such as Na+/K+ ratio equilibrium, signalling cascade and stress protection, and we found 40 new allelic variants in coding sequences. By performing association analyses using both general and mixed linear models, we identified 11 significant SNPs related to salinity. We further evaluated the putative consequences of these SNPs at the protein level using bioinformatic tools. Amongst the five nonsynonymous SNPs significantly associated with saltstress traits, we found a T67K mutation that may cause the destabilization of one transmembrane domain in OsHKT1;5, and a P140A alteration that significantly increases the probability of OsHKT1;5 phosphorylation. The K24E mutation can putatively affect Salt interaction with other proteins thus impacting its function. Our results have uncovered allelic variants affecting salinity tolerance that may be important in breeding.por
dc.identifier.citationPlant Biotechnology Journal, 11, 87-100por
dc.identifier.doi10.1111/pbi.12010
dc.identifier.issn1467-7652
dc.identifier.urihttp://hdl.handle.net/10400.12/2360
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherBlackwellpor
dc.subjectOryza sativapor
dc.subjectSalt-stresspor
dc.subjectAssociation analysispor
dc.titleNew allelic variants found in key rice salt-tolerance genes an association studypor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceNew Jerseypor
oaire.citation.endPage100por
oaire.citation.startPage87por
oaire.citation.titlePlant Biotechnology Journalpor
oaire.citation.volume11por
person.familyNameNegrao
person.familyNameAlmadanim
person.familyNameAbreu
person.familyNamePaulo Marôco Domingos
person.familyNameCOURTOIS
person.familyNameMcNally
person.givenNameSonia
person.givenNameMaria Cecilia
person.givenNameIsabel
person.givenNameJoão
person.givenNameBrigitte
person.givenNameKenneth
person.identifier377397
person.identifierD-4339-2015
person.identifier200458
person.identifier72481
person.identifier.ciencia-idDE12-522B-5F37
person.identifier.ciencia-id5218-7E60-CDD0
person.identifier.ciencia-idD81B-BE2D-9B43
person.identifier.orcid0000-0001-8059-5240
person.identifier.orcid0000-0003-4803-9628
person.identifier.orcid0000-0002-5566-2146
person.identifier.orcid0000-0001-9214-5378
person.identifier.orcid0000-0003-2118-7102
person.identifier.orcid0000-0002-9613-5537
person.identifier.ridE-7978-2010
person.identifier.ridI-5081-2013
person.identifier.ridA-4004-2009
person.identifier.scopus-author-id16234370400
person.identifier.scopus-author-id7003902256
person.identifier.scopus-author-id6602157617
person.identifier.scopus-author-id7005769581
rcaap.rightsembargoedAccesspor
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