Down-regulation of the IbEXP1 gene enhanced storage root development in sweetpotato

Cited 73 time in scopus
Metadata Downloads

Full metadata record

DC FieldValueLanguage
dc.contributor.authorS A Noh-
dc.contributor.authorHaeng Soon Lee-
dc.contributor.authorY S Kim-
dc.contributor.authorK H Paek-
dc.contributor.authorJ S Shin-
dc.contributor.authorJ M Bae-
dc.date.accessioned2017-04-19T09:46:14Z-
dc.date.available2017-04-19T09:46:14Z-
dc.date.issued2013-
dc.identifier.issn0022-0957-
dc.identifier.uri10.1093/jxb/ers236ko
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/11645-
dc.description.abstractThe role of an expansin gene (IbEXP1) in the formation of the storage root (SR) was investigated by expression pattern analysis and characterization of IbEXP1-antisense sweetpotato (Ipomoea batatas cv. Yulmi) plants in an attempt to elucidate the molecular mechanism underlying SR development in sweetpotato. The transcript level of IbEXP1 was high in the fibrous root (FR) and petiole at the FR stage, but decreased significantly at the young storage root (YSR) stage. IbEXP1-antisense plants cultured in vitro produced FRs which were both thicker and shorter than those of wild-type (WT) plants. Elongation growth of the epidermal cells was significantly reduced, and metaxylem and cambium cell proliferation was markedly enhanced in the FRs of IbEXP1-antisense plants, resulting in an earlier thickening growth in these plants relative to WT plants. There was a marked reduction in the lignification of the central stele of the FRs of the IbEXP1-antisense plants, suggesting that the FRs of the mutant plants possessed a higher potential than those of WT plants to develop into SRs. IbEXP1-antisense plants cultured in soil produced a larger number of SRs and, consequently, total SR weight per IbEXP1-antisense plant was greater than that per WT plant. These results demonstrate that SR development was accelerated in IbEXP1-antisense plants and suggest that IbEXP1 plays a negative role in the formation of SR by suppressing the proliferation of metaxylem and cambium cells to inhibit the initial thickening growth of SRs. IbEXP1 is the first sweetpotato gene whose role in SR development has been directly identified in soil-grown transgenic sweetpotato plants.-
dc.publisherOxford Univ Press-
dc.titleDown-regulation of the IbEXP1 gene enhanced storage root development in sweetpotato-
dc.title.alternativeDown-regulation of the IbEXP1 gene enhanced storage root development in sweetpotato-
dc.typeArticle-
dc.citation.titleJournal of Experimental Botany-
dc.citation.number1-
dc.citation.endPage142-
dc.citation.startPage129-
dc.citation.volume64-
dc.contributor.affiliatedAuthorHaeng Soon Lee-
dc.contributor.alternativeName노설아-
dc.contributor.alternativeName이행순-
dc.contributor.alternativeName김연성-
dc.contributor.alternativeName백경희-
dc.contributor.alternativeName신정섭-
dc.contributor.alternativeName배정명-
dc.identifier.bibliographicCitationJournal of Experimental Botany, vol. 64, no. 1, pp. 129-142-
dc.identifier.doi10.1093/jxb/ers236-
dc.subject.keywordDevelopment-
dc.subject.keywordexpansin-
dc.subject.keywordstorage root-
dc.subject.keywordsweetpotato-
dc.subject.keywordthickening growth-
dc.subject.localdevelopment-
dc.subject.localdeveoopment-
dc.subject.localDevelopment-
dc.subject.localexpansin-
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-
Appears in Collections:
1. Journal Articles > Journal Articles
Files in This Item:
  • There are no files associated with this item.


Items in OpenAccess@KRIBB are protected by copyright, with all rights reserved, unless otherwise indicated.