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    The interaction of strigolactones with abscisic acid during the drought response in rice

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    U18ArtHaiderInteractionInthomNodev.pdf (1.124Mb)
    Date
    2018-04-13
    Author
    Haider, I.
    Andreo-Jimenez, B.
    Bruno, M.
    Bimbo, A.
    Flokova, K.
    Abuauf, H.
    Ntui, V.O.
    Guo, X.
    Charnikhova, T.
    Al-Babili, S.
    Bouwmeester, H.J.
    Ruyter-Spira, C.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Both strigolactones (SLs) and abscisic acid (ABA) biosynthetically originate from carotenoids. Considering their common origin, the interaction of these two hormones at the biosynthetic and/or regulatory level may be anticipated. Here we show that, in rice, drought simultaneously induces SL production in the root, and ABA production and the expression of SL biosynthetic genes in the shoot. Under control conditions, the ABA concentration was higher in shoots of the SL biosynthetic rice mutants dwarf10 (d10) and d17 than in wild-type plants, while a similar trend was observed for the SL perception mutant d3. These differences were enhanced under drought. However, drought did not result in an increase in leaf ABA content in the rice mutant line d27, carrying a mutation in the gene encoding the first committed enzyme in SL biosynthesis, to the same extent as in the other SL mutants and the wild type. Accordingly, d10, d17, and d3 lines were more drought tolerant than wild-type plants, whereas d27 displayed decreased tolerance. Finally, overexpression of OsD27 in rice resulted in increased levels of ABA when compared with wild-type plants. We conclude that the SL and ABA pathways are connected with each other through D27, which plays a crucial role in determining ABA and SL content in rice.
    http://dx.doi.org/10.1093/jxb/ery089
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5188
    Non-IITA Authors ORCID
    Valentine Ntuihttps://orcid.org/0000-0003-4709-8087
    Digital Object Identifier (DOI)
    http://dx.doi.org/10.1093/jxb/ery089
    Research Themes
    NUTRITION & HUMAN HEALTH
    IITA Subjects
    Nutrition
    Agrovoc Terms
    Aba; Biosynthesis; Drought; Rice
    Journals
    Journal of Experimental Botany
    Collections
    • Journal and Journal Articles4835
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