Wheat line “RYNO3936” is associated with delayed water stress-induced leaf senescence and rapid water-deficit stress recovery

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dc.contributor.authorLe Roux, Marlon-Schylor L.en_ZA
dc.contributor.authorBurger, N. Francois V.en_ZA
dc.contributor.authorVlok, Mareen_ZA
dc.contributor.authorKunert, Karl J.en_ZA
dc.contributor.authorCullis, Christopher A.en_ZA
dc.contributor.authorBotha, Anna-Mariaen_ZA
dc.date.accessioned2020-07-17T11:24:58Z
dc.date.available2020-07-17T11:24:58Z
dc.date.issued2020
dc.descriptionCITATION: Le Roux, M. S. L., et al. 2020. Wheat line “RYNO3936” is associated with delayed water stress-induced leaf senescence and rapid water-deficit stress recovery. Frontiers in Plant Science, 11:1053, doi:10.3389/fpls.2020.01053.
dc.descriptionThe original publication is available at https://www.frontiersin.org
dc.descriptionPublication of this article was funded by the Stellenbosch University Open Access Fund
dc.description.abstractRandom mutagenesis was applied to produce a new wheat mutant (RYNO3926) with superior characteristics regarding tolerance to water deficit stress induced at late booting stage. The mutant also displays rapid recovery from water stress conditions. Under water stress conditions mutant plants reached maturity faster and produced more seeds than its wild type wheat progenitor. Wild-type Tugela DN plants died within 7 days after induction of water stress induced at late booting stage, while mutant plants survived by maintaining a higher relative moisture content (RMC), increased total chlorophyll, and a higher photosynthesis rate and stomatal conductance. Analysis of the proteome of mutant plants revealed that they better regulate post-translational modification (SUMOylation) and have increased expression of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) proteins. Mutant plants also expressed unique proteins associated with dehydration tolerance including abscisic stress-ripening protein, cold induced protein, cold-responsive protein, dehydrin, Group 3 late embryogenesis, and a lipoprotein (LAlv9) belonging to the family of lipocalins. Overall, our results suggest that our new mutant RYNO3936 has a potential for inclusion in future breeding programs to improve drought tolerance under dryland conditions.en_ZA
dc.description.urihttps://www.frontiersin.org/articles/10.3389/fpls.2020.01053/full
dc.description.versionPublisher's version
dc.format.extent21 pages
dc.identifier.citationLe Roux, M. S. L., et al. 2020. Wheat line “RYNO3936” is associated with delayed water stress-induced leaf senescence and rapid water-deficit stress recovery. Frontiers in Plant Science, 11:1053, doi:10.3389/fpls.2020.01053
dc.identifier.issn1664-462X (online)
dc.identifier.otherdoi:10.3389/fpls.2020.01053
dc.identifier.urihttp://hdl.handle.net/10019.1/108713
dc.language.isoen_ZAen_ZA
dc.publisherFrontiers Media
dc.rights.holderAuthors retain copyright
dc.subjectWheat -- Breedingen_ZA
dc.subjectWheat -- Geneticsen_ZA
dc.subjectWheat -- Drought toleranceen_ZA
dc.subjectDry farmingen_ZA
dc.titleWheat line “RYNO3936” is associated with delayed water stress-induced leaf senescence and rapid water-deficit stress recoveryen_ZA
dc.typeArticleen_ZA
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