Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/50441
DC FieldValueLanguage
dc.contributor.authorYang, C.H.en_US
dc.contributor.author楊長賢zh_TW
dc.contributor.authorLi, C.I.en_US
dc.date1999zh_TW
dc.date.accessioned2014-06-06T08:49:31Z-
dc.date.available2014-06-06T08:49:31Z-
dc.identifier.issn0032-0781zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/50441-
dc.description.abstractA recessive mutation affecting both root and shoot development was isolated from transformants of lettuce cv. Diana co-transformed with maize Ac transposase and Ds. Mutant phenotype in the progeny was co-segregated with the T-DNA containing Ac transposase indicating that the mutation was caused by insertional mutagenesis. Mutation in this novel genetic locus, designated as ABNORMAL ROOT AND SHOOT (ARS), showed a dwarf phenotype with short thick roots, short hypocotyl and abnormal filamentous leaves without any further reproductive development. The anatomical analysis revealed that the ars mutant root phenotype is primarily due to the lack of cell elongation and to the abnormal increase in cell number in the cortex region in the roots. ars mutants are able to initiate normal leaf primodia, but, the cell elongation and cellular organization of the developing leaf primodia is impaired and results in sequentially abnormal development of the leaf. ars mutants also display photomorphogenic development in darkness by producing open cotyledons, developing vegetative leaves, and short hypocotyls. This suggests that the ARS gene may also be involved in the regulation of cell elongation in the hypocotyl in the absence of light. Abnormal development in aus mutations can not be normalized by exogenous application of phytohormones such as gibberellin and brassinosteroids, indicating that the mutant is not impaired in the biosynthesis of these two hormones.en_US
dc.language.isoen_USzh_TW
dc.relationPlant and Cell Physiologyen_US
dc.relation.ispartofseriesPlant and Cell Physiology, Volume 40, Issue 11, Page(s) 1108-1118.en_US
dc.subjectABNORMAL ROOT AND SHOOT (ARS)en_US
dc.subjectcell elongationen_US
dc.subjectmeristemen_US
dc.subjectphotomorphogenesisen_US
dc.subjectroot developmenten_US
dc.subjectshoot developmenten_US
dc.subjectthaliana l heynhen_US
dc.subjectarabidopsis-thalianaen_US
dc.subjectbrassinosteroid biosynthesisen_US
dc.subjectmeristem developmenten_US
dc.subjectgeneen_US
dc.subjecttomatoen_US
dc.subjectlighten_US
dc.subjectcytochrome-p450en_US
dc.subjectinitiationen_US
dc.subjectencodesen_US
dc.titleA transgenic mutant defective in cell elongation and cellular organization during both root and shoot development in lettuce, Lactuca sativaen_US
dc.typeJournal Articlezh_TW
item.languageiso639-1en_US-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.fulltextno fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
Appears in Collections:生物科技學研究所
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