SRD1 is involved in the auxin-mediated initial thickening growth of storage root by enhancing proliferation of metaxylem and cambium cells in sweetpotato (Ipomoea batatas)

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dc.contributor.authorS A Noh-
dc.contributor.authorHaeng Soon Lee-
dc.contributor.authorE J Huh-
dc.contributor.authorG H Huh-
dc.contributor.authorK H Paek-
dc.contributor.authorJ S Shin-
dc.contributor.authorJ M Bae-
dc.date.accessioned2017-04-19T09:19:41Z-
dc.date.available2017-04-19T09:19:41Z-
dc.date.issued2010-
dc.identifier.issn0022-0957-
dc.identifier.uri10.1093/jxb/erp399ko
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/9730-
dc.description.abstractA sweetpotato (Ipomoea batatas cv. 'Jinhongmi') MADS-box protein cDNA (SRD1) has been isolated from an early stage storage root cDNA library. The role of the SRD1 gene in the formation of the storage root in sweetpotato was investigated by an expression pattern analysis and characterization of SRD1-overexpressing (ox) transgenic sweetpotato plants. Transcripts of SRD1 were detected only in root tissues, with the fibrous root having low levels of the transcript and the young storage root showing relatively higher transcript levels. SRD1 mRNA was mainly found in the actively dividing cells, including the vascular and cambium cells of the young storage root. The transcript level of SRD1 in the fibrous roots increased in response to 1000μM indole-3-acetic acid (IAA) applied exogenously. During the early stage of storage root development, the endogenous IAA content and SRD1 transcript level increased concomitantly, suggesting an involvement of SRD1 during the early stage of the auxin-dependent development of the storage root. SRD1-ox sweetpotato plants cultured in vitro produced thicker and shorter fibrous roots than wild-type plants. The metaxylem and cambium cells of the fibrous roots of SRD1-ox plants showed markedly enhanced proliferation, resulting in the fibrous roots of these plants showing an earlier thickening growth than those of wild-type plants. Taken together, these results demonstrate that SRD1 plays a role in the formation of storage roots by activating the proliferation of cambium and metaxylem cells to induce the initial thickening growth of storage roots in an auxin-dependent manner.-
dc.publisherOxford Univ Press-
dc.titleSRD1 is involved in the auxin-mediated initial thickening growth of storage root by enhancing proliferation of metaxylem and cambium cells in sweetpotato (Ipomoea batatas)-
dc.title.alternativeSRD1 is involved in the auxin-mediated initial thickening growth of storage root by enhancing proliferation of metaxylem and cambium cells in sweetpotato (Ipomoea batatas)-
dc.typeArticle-
dc.citation.titleJournal of Experimental Botany-
dc.citation.number5-
dc.citation.endPage1349-
dc.citation.startPage1337-
dc.citation.volume61-
dc.contributor.affiliatedAuthorHaeng Soon Lee-
dc.contributor.alternativeName노설아-
dc.contributor.alternativeName이행순-
dc.contributor.alternativeName허은주-
dc.contributor.alternativeName허경혜-
dc.contributor.alternativeName백경희-
dc.contributor.alternativeName신정섭-
dc.contributor.alternativeName배정명-
dc.identifier.bibliographicCitationJournal of Experimental Botany, vol. 61, no. 5, pp. 1337-1349-
dc.identifier.doi10.1093/jxb/erp399-
dc.subject.keywordAuxin-
dc.subject.keywordDevelopment-
dc.subject.keywordMADS-box gene-
dc.subject.keywordStorage root-
dc.subject.keywordSweetpotato-
dc.subject.keywordThickening growth-
dc.subject.localAuxin-
dc.subject.localauxin-
dc.subject.localdevelopment-
dc.subject.localdeveoopment-
dc.subject.localDevelopment-
dc.subject.localMADS-box gene-
dc.subject.localstorage root-
dc.subject.localStorage root-
dc.subject.localsweet potato-
dc.subject.localsweet potatoes-
dc.subject.localSweet potato (Ipomoea batatas L. Lam)-
dc.subject.localSweet potato (Ipomoea batatas)-
dc.subject.localSweet otato-
dc.subject.localsweet potato (Ipomoea batatas)-
dc.subject.localipomoea batatas-
dc.subject.localSweetpotato (Ipomoea batatas)-
dc.subject.localsweetpotato-
dc.subject.localSweetpotato Ipomoea batatas-
dc.subject.localSweetpotato (Ipomoea batatas L.)-
dc.subject.localSweetpotato-
dc.subject.localSweetpotato (Ipomoea batatas (L.) Lam)-
dc.subject.localSweet potato-
dc.subject.localIpomoea batatas-
dc.subject.localSweet potato (Ipomoea batatas (L.) Lam.)-
dc.subject.localthickening growth-
dc.subject.localThickening growth-
dc.description.journalClassY-
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