{"created":"2023-05-15T13:37:46.524412+00:00","id":1464,"links":{},"metadata":{"_buckets":{"deposit":"6e63e854-3bde-43f1-a9ee-32afa8850239"},"_deposit":{"created_by":12,"id":"1464","owners":[12],"pid":{"revision_id":0,"type":"depid","value":"1464"},"status":"published"},"_oai":{"id":"oai:repository.naro.go.jp:00001464","sets":["87:591:655:130:305"]},"author_link":["1179"],"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2009-12-20","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"52","bibliographicPageStart":"13","bibliographicVolumeNumber":"9","bibliographic_titles":[{"bibliographic_title":"花き研究所研究報告"},{"bibliographic_title":"Bulletin of the National Institute of Floricultural Science","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The plant hormone ethylene suppresses flower initiation and internode elongation in chrysanthemum (Chrysanthemum morifolium Ramat.), as does the application of ethephon, which is hydrolyzed in plant tissue and releases ethylene. The effects of ethephon are unstable, and vary with cultivar and time, season, and method of application. We describe the variation in response to ethephon due to temperature, season, and cultivar. The seasonality of extension growth and flowering capacity, growing temperatures, and genetic background of chrysanthemum made the effects of ethephon unstable and variable. Lower temperatures enhanced the suppression of internode elongation and flowering by ethephon, as confirmed by the consistently higher rate of ethylene release and greater slowing of plant extension growth and flowering at lower temperatures. After the summer plant growth, it became more difficult for ethephon-sprayed plants to elongate and flower, because they were in a low-capacity state. Cultivars that easily form rosettes, and show suppression of flowering, arehighly sensitive to ethephon. In such cultivars, ethephon induced the formation of rosettes and completely prevented flowering. Since rosette formation and suppression of flowering could be linked to dormancy in chrysanthemum, this indicates that ethylene might be involved in the induction of dormancy in chrysanthemum. Temperature plays a significant role in the annual cycle between growth and dormancy of the herbaceous perennial chrysanthemum. After exposure to high summer temperatures, cool temperatures (<15℃) triggers dormancy. Cessation of flowering and formation of rosettes by cessation of elongation are characteristic of dormant plants, and can be stimulated by exogenous ethylene of ethephon and 1-aminocyclopropane-1-carboxylic acid. Thus, the ethylene response pathway might be involved in the temperature-induced dormancy of chrysanthemum. We used transgenic chrysanthemums expressing a mutated ethylene receptor gene to assess this involvement. The transgenic lines showed reduced ethylene sensitivity : ethylene caused leaf yellowing in wild-type chrysanthemums, but the leaves remained green in the transgenic lines.Extension growth and flowering of wild-type and transgenic lines varied between temperatures : at 20℃, the transgenic lines showed the same stem elongation and flowering as the wild type. At cooler temperatures, the wild type formed rosettes with an inability to flower and entered dormancy, but some transgenic lines continued to elongate and flower. This supports the involvement of the ethylene response pathway in the temperature-induced dormancy of chrysanthemum. At the highest dosage of ethylene-releasing ethephon, wild-type plants formed rosettes with an inability to flower and became dormant, but one transgenic line did not. This confirms that dormancy is induced via the ethylene response pathway. The plant hormone gibberellin (GA) induces flower formation in several long-day plants, and exogenous GA can partly substitute for chilling treatment in cold-dependent plants. Both chilling and GA are required to promote flowering of the short-day chrysanthemum as observed in many plants. Chilling and GA requirements for the flowering of 4 cultivars were examined, and their genetic variation was shown : those that required GA also required chilling for flowering, but those that did not require GA showed no chilling requirement. GA had little effect on the increase in expression of CmAFL1, an APETALA1/FRUITFULL homologous gene from chrysanthemum, under short-day conditions. With regard to LEAFY in Arabidopsis thaliana, GA promoted the expression of CmFL, a FLORICAULA/LEAFY homologous gene from chrysanthemum, and the upregulation of CmFL required GA in cultivars with a chilling requirement. Therefore, this GA requirement can be attributed mainly to the chilling requirement for flowering.\n","subitem_description_type":"Abstract"}]},"item_10002_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24514/00001425","subitem_identifier_reg_type":"JaLC"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"独立行政法人 農業・食品産業技術総合研究機構 花き研究所"}]},"item_10002_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.24514/00001425","subitem_relation_type_select":"DOI"}}]},"item_10002_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1347-2917","subitem_source_identifier_type":"ISSN"}]},"item_10002_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"住友, 克彦"},{"creatorName":"スミトモ, カツヒコ","creatorNameLang":"ja-Kana"},{"creatorName":"SUMITOMO, Katsuhiko","creatorNameLang":"en"}],"nameIdentifiers":[{},{},{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-03-14"}],"displaytype":"detail","filename":"frc_report_No9p13-52p.pdf","filesize":[{"value":"1.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"frc_report_No9p13-52p.pdf","url":"https://repository.naro.go.jp/record/1464/files/frc_report_No9p13-52p.pdf"},"version_id":"e4a78409-59be-46dc-b82b-6891d980eace"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Chrysanthemum morifolium","subitem_subject_scheme":"Other"},{"subitem_subject":"ethylene","subitem_subject_scheme":"Other"},{"subitem_subject":"gibberellin","subitem_subject_scheme":"Other"},{"subitem_subject":"flowering","subitem_subject_scheme":"Other"},{"subitem_subject":"rosette","subitem_subject_scheme":"Other"},{"subitem_subject":"chilling requirement","subitem_subject_scheme":"Other"},{"subitem_subject":"dormancy","subitem_subject_scheme":"Other"},{"subitem_subject":"Chrysanthemum morifolium","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"ethylene","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"gibberellin","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"flowering","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"rosette","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"chilling requirement","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"dormancy","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"キク（Chrysanthemum morifolium）の生育における制御機構の解明に向けて : エチレンおよびジベレリンを介した制御経路","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"キク（Chrysanthemum morifolium）の生育における制御機構の解明に向けて : エチレンおよびジベレリンを介した制御経路"},{"subitem_title":"An Approach to Revealing Regulatory Growth Mechanisms in Chrysanthemum morifolium : Ethylene and Gibberellin as a Signaling Factor in Growth Regulation","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"12","path":["305"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-03-22"},"publish_date":"2019-03-22","publish_status":"0","recid":"1464","relation_version_is_last":true,"title":["キク（Chrysanthemum morifolium）の生育における制御機構の解明に向けて : エチレンおよびジベレリンを介した制御経路"],"weko_creator_id":"12","weko_shared_id":12},"updated":"2023-05-15T15:54:58.267089+00:00"}