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Comparison of the role of gibberellins and ethylene in the response to submergence of two lowland rice cultivars, Senia and Bomba

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Comparison of the role of gibberellins and ethylene in the response to submergence of two lowland rice cultivars, Senia and Bomba

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dc.contributor.author Dubois, Vincent es_ES
dc.contributor.author Moritz, Thomas es_ES
dc.contributor.author Garcia Martinez, Jose L es_ES
dc.date.accessioned 2016-11-23T10:33:15Z
dc.date.available 2016-11-23T10:33:15Z
dc.date.issued 2011-02-15
dc.identifier.issn 0176-1617
dc.identifier.uri http://hdl.handle.net/10251/74515
dc.description.abstract [EN] We examined the gibberellin (GA) and ethylene regulation of submergence-induced elongation in seedlings of the submergence-tolerant lowland rice (Oryza sativa L) cvs Senia and Bomba. Elongation was enhanced after germination to facilitate water escape and reach air. We found that submergence-induced elongation depends on GA because it was counteracted by paclobutrazol (an inhibitor of GA biosynthesis), an effect that was negated by GA(3). Moreover, in the cv Senia, submergence increased the content of active GA(1) and its immediate precursors (GA(53), GA(19) and GA(20)) by enhancing expression of several GA biosynthesis genes (OsGA20ox1 and -2, and OsGA3ox2), but not by decreasing expression of several OsGA2ox (GA inactivating genes). Senia seedlings, in contrast to Bomba seedlings, did not elongate in response to ethylene or 1-aminocyclopropane-1-carboxylic-acid (ACC; an ethylene precursor) application, and submergence-induced elongation was not reduced in the presence of 1-methylcyclopropene (1-MCP; an ethylene perception inhibitor). Ethylene emanation was similar in Senia seedlings grown in air and in submerged-grown seedlings following de-submergence, while it increased in Bomba. The expression of ethylene biosynthesis genes (OsACS1, -2 and -3, and OsACO1) was not affected in Senia, but expression of OsACS5 was rapidly enhanced in Bomba upon submergence. Our results support the conclusion that submergence elongation enhancement of lowland rice is due to alteration of GA metabolism leading to an increase in active GA (GA1) content. Interestingly, in the cv Senia, in contrast to cv Bomba, this was triggered through an ethylene-independent mechanism. Published by Elsevier GmbH es_ES
dc.description.sponsorship We thank D. Luis Marques (Copsemar, Sueca, Valencia, Spain) for the generous gift of Senia and Bomba seeds, Floralife (Walterboro, SC, USA) for supply of 1-MCP, Monsanto (St. Louis, Missouri, USA) for providing sequence information for rice BACs, and Ms. Teresa Sabater for technical help with the experiments. The work was supported by a European Union Research Training Network (RTN1-1999-00086) and BIO2009-07968. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation European Union Research Training Network RTN1-1999-00086 BIO2009-07968 es_ES
dc.relation.ispartof Journal of Plant Physiology es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Ethylene es_ES
dc.subject Gibberellins es_ES
dc.subject Lowland rice es_ES
dc.subject Oryza sativa es_ES
dc.subject Submergence es_ES
dc.title Comparison of the role of gibberellins and ethylene in the response to submergence of two lowland rice cultivars, Senia and Bomba es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.jplph.2010.07.023
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Biología Molecular y Celular de Plantas - Institut Universitari Mixt de Biologia Molecular i Cel·lular de Plantes es_ES
dc.description.bibliographicCitation Dubois, V.; Moritz, T.; Garcia Martinez, JL. (2011). Comparison of the role of gibberellins and ethylene in the response to submergence of two lowland rice cultivars, Senia and Bomba. Journal of Plant Physiology. 168(3):233-241. doi:10.1016/j.jplph.2010.07.023 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion https://dx.doi.org/10.1016/j.jplph.2010.07.023 es_ES
dc.description.upvformatpinicio 233 es_ES
dc.description.upvformatpfin 241 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 168 es_ES
dc.description.issue 3 es_ES
dc.relation.senia 214044 es_ES


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