Allelic variation in rice Fertilization Independent Endosperm 1 contributes to grain width under high night temperature stress

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dc.contributor.authorDhatt, Balpreet K.en
dc.contributor.authorPaul, Puneeten
dc.contributor.authorSandhu, Jaspreeten
dc.contributor.authorHussain, Waseemen
dc.contributor.authorIrvin, Larissaen
dc.contributor.authorZhu, Feiyuen
dc.contributor.authorAdviento-Borbe, Maria Arleneen
dc.contributor.authorLorence, Argeliaen
dc.contributor.authorStaswick, Paulen
dc.contributor.authorYu, Hongfengen
dc.contributor.authorMorota, Gotaen
dc.contributor.authorWalia, Harkamalen
dc.contributor.departmentAnimal and Poultry Sciencesen
dc.date.accessioned2020-12-07T19:34:46Zen
dc.date.available2020-12-07T19:34:46Zen
dc.date.issued2020-10en
dc.description.abstractA higher minimum (night-time) temperature is considered a greater limiting factor for reduced rice yield than a similar increase in maximum (daytime) temperature. While the physiological impact of high night temperature (HNT) has been studied, the genetic and molecular basis of HNT stress response remains unexplored. We examined the phenotypic variation for mature grain size (length and width) in a diverse set of rice accessions under HNT stress. Genome-wide association analysis identified several HNT-specific loci regulating grain size as well as loci that are common for optimal and HNT stress conditions. A novel locus contributing to grain width under HNT conditions colocalized withFie1, a component of the FIS-PRC2 complex. Our results suggest that the allelic difference controlling grain width under HNT is a result of differential transcript-level response ofFie1in grains developing under HNT stress. We present evidence to support the role ofFie1in grain size regulation by testing overexpression (OE) and knockout mutants under heat stress. The OE mutants were either unaltered or had a positive impact on mature grain size under HNT, while the knockouts exhibited significant grain size reduction under these conditions.en
dc.description.sponsorshipU.S. National Science FoundationNational Science Foundation (NSF) [1736192] Funding Source: Medlineen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1111/nph.16897en
dc.identifier.eissn1469-8137en
dc.identifier.issn0028-646Xen
dc.identifier.pmid32858766en
dc.identifier.urihttp://hdl.handle.net/10919/101035en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectFIS-PRC2en
dc.subjectgenome-wide association analysisen
dc.subjectgrain developmenten
dc.subjectgrain qualityen
dc.subjectgrain sizeen
dc.subjectheat stressen
dc.subjectriceen
dc.subjectstarchen
dc.titleAllelic variation in rice Fertilization Independent Endosperm 1 contributes to grain width under high night temperature stressen
dc.title.serialNew Phytologisten
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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