Natural variation in LONELY GUY-Like 1 regulates rice grain weight under warmer night conditions

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cg.contributor.affiliationUniversity of Nebraskaen
cg.contributor.affiliationInternational Rice Research Instituteen
cg.contributor.affiliationArkansas State Universityen
cg.contributor.affiliationUnited States Department of Agricultureen
cg.contributor.affiliationVirginia Techen
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1093/plphys/kiae313en
cg.isijournalISI Journalen
cg.issn0032-0889en
cg.issue1en
cg.journalPLANT PHYSIOLOGYen
cg.reviewStatusPeer Reviewen
cg.volume196en
dc.contributor.authorSandhu, Jaspreeten
dc.contributor.authorIrvin, Larissaen
dc.contributor.authorChandaran, Anil Kumaren
dc.contributor.authorOguro, Shoheien
dc.contributor.authorPaul, Puneeten
dc.contributor.authorDhatt, Balpreeten
dc.contributor.authorHussain, Waseemen
dc.contributor.authorCunningham, Shannon S.en
dc.contributor.authorQuinones, Cherryl O.en
dc.contributor.authorLorence, Argeliaen
dc.contributor.authorAdviento-Borbe, Maria Arleneen
dc.contributor.authorStaswick, Paulen
dc.contributor.authorMorota, Gotaen
dc.contributor.authorWalia, Harkamalen
dc.date.accessioned2024-12-19T12:53:02Zen
dc.date.available2024-12-19T12:53:02Zen
dc.identifier.urihttps://hdl.handle.net/10568/163804
dc.titleNatural variation in LONELY GUY-Like 1 regulates rice grain weight under warmer night conditionsen
dcterms.abstractGlobal nighttime temperatures are rising at twice the rate of daytime temperatures and pose a challenge for rice (Oryza sativa) production. High nighttime temperature (HNT) stress affects rice yield by reducing grain weight, size, and fertility. Although the genes associated with these yield parameters have been identified and characterized under normal temperatures, the genetic basis of grain weight regulation under HNT stress remains less explored. We examined the natural variation for rice single grain weight (SGW) under HNT stress imposed during grain development. A genome-wide association analysis identified several loci associated with grain weight under HNT stress. A locus, SGW1, specific to HNT conditions resolved to LONELY GUY-Like 1 (LOGL1), which encodes a putative cytokinin-activation enzyme. We demonstrated that LOGL1 contributes to allelic variation at SGW1. Accessions with lower LOGL1 transcript abundance had higher grain weight under HNT. This was supported by the higher grain weight of logl1-mutants relative to the wild type under HNT. Compared to logl1-mutants, LOGL1 over-expressers showed increased sensitivity to HNT. We showed that LOGL1 regulates the thiamin biosynthesis pathway, which is under circadian regulation, which in turn is likely perturbed by HNT stress. These findings provide a genetic source to enhance rice adaptation to warming night temperatures and improve our mechanistic understanding of HNT stress tolerance pathways.en
dcterms.accessRightsOpen Access
dcterms.available2024-05-31
dcterms.bibliographicCitationSandhu, Jaspreet; Irvin, Larissa; Chandaran, Anil Kumar; Oguro, Shohei; Paul, Puneet; Dhatt, Balpreet; Hussain, Waseem; Cunningham, Shannon S; Quinones, Cherryl O; Lorence, Argelia; Adviento-Borbe, Maria Arlene; Staswick, Paul; Morota, Gota and Walia, Harkamal. 2024. Natural variation in LONELY GUY-Like 1 regulates rice grain weight under warmer night conditions. Plant Physiology,en
dcterms.extentpp. 164-180en
dcterms.issued2024-09-02
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherOxford University Pressen
dcterms.typeJournal Article

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