Drought Response in Wheat: Key Genes and Regulatory Mechanisms Controlling Root System Architecture and Transpiration Efficiency

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cg.contributor.affiliationNational Research Council, Canada
cg.contributor.affiliationAgriculture and Agri-Food Canada
cg.contributor.affiliationNational Agriculture and Food Research Organization, Japan
cg.contributor.affiliationInternational Center for Tropical Agriculture
cg.creator.identifierMICHAEL GOMEZ SELVARAJ: 0000-0003-2394-0399
cg.creator.identifierSatoshi Ogawa: 0000-0003-4990-1187
cg.identifier.doihttps://doi.org/10.3389/fchem.2017.00106
cg.isijournalISI Journal
cg.issn2296-2646
cg.journalFrontiers in Chemistry
cg.reviewStatusPeer Review
cg.volume5
dc.contributor.authorKulkarni, Manoj
dc.contributor.authorSoolanayakanahally, Raju
dc.contributor.authorOgawa, Satoshi
dc.contributor.authorUga, Yusaku
dc.contributor.authorSelvaraj, Michael Gomez
dc.contributor.authorKagale, Sateesh
dc.date.accessioned2017-12-05T15:36:25Zen
dc.date.available2017-12-05T15:36:25Zen
dc.identifier.urihttps://hdl.handle.net/10568/89637
dc.titleDrought Response in Wheat: Key Genes and Regulatory Mechanisms Controlling Root System Architecture and Transpiration Efficiencyen
dcterms.abstractAbiotic stresses such as, drought, heat, salinity, and flooding threaten global food security. Crop genetic improvement with increased resilience to abiotic stresses is a critical component of crop breeding strategies. Wheat is an important cereal crop and a staple food source globally. Enhanced drought tolerance in wheat is critical for sustainable food production and global food security. Recent advances in drought tolerance research have uncovered many key genes and transcription regulators governing morpho-physiological traits. Genes controlling root architecture and stomatal development play an important role in soil moisture extraction and its retention, and therefore have been targets of molecular breeding strategies for improving drought tolerance. In this systematic review, we have summarized evidence of beneficial contributions of root and stomatal traits to plant adaptation to drought stress. Specifically, we discuss a few key genes such as, DRO1 in rice and ERECTA in Arabidopsis and rice that were identified to be the enhancers of drought tolerance via regulation of root traits and transpiration efficiency. Additionally, we highlight several transcription factor families, such as, ERF (ethylene response factors), DREB (dehydration responsive element binding), ZFP (zinc finger proteins), WRKY, and MYB that were identified to be both positive and negative regulators of drought responses in wheat, rice, maize, and/or Arabidopsis. The overall aim of this review is to provide an overview of candidate genes that have been identified as regulators of drought response in plants. The lack of a reference genome sequence for wheat and non-transgenic approaches for manipulation of gene functions in wheat in the past had impeded high-resolution interrogation of functional elements, including genes and QTLs, and their application in cultivar improvement. The recent developments in wheat genomics and reverse genetics, including the availability of a gold-standard reference genome sequence and advent of genome editing technologies, are expected to aid in deciphering of the functional roles of genes and regulatory networks underlying adaptive phenological traits, and utilizing the outcomes of such studies in developing drought tolerant cultivars.en
dcterms.accessRightsOpen Access
dcterms.available2017-12-05
dcterms.bibliographicCitationKulkarni, Manoj; Soolanayakanahally, Raju; Ogawa, Satoshi; Uga, Yusaku; Selvaraj, Michael G.; Kagale, Sateesh. 2017. Drought Response in Wheat: Key Genes and Regulatory Mechanisms Controlling Root System Architecture and Transpiration Efficiency . Frontiers in Chemistry 5: 106.en
dcterms.extent5: 106
dcterms.issued2017-12-05
dcterms.languageen
dcterms.publisherFrontiers Media
dcterms.subjectwheaten
dcterms.subjecttrigoen
dcterms.subjectdroughten
dcterms.subjectsequíaen
dcterms.subjectroot traitsen
dcterms.subjecttranspirationen
dcterms.subjectabiotic stressen
dcterms.subjecttranspiraciónen
dcterms.subjectestrés abioticoen
dcterms.typeJournal Article

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