{"created":"2021-03-01T06:34:02.324972+00:00","id":28250,"links":{},"metadata":{"_buckets":{"deposit":"3c717aef-9202-4b0c-8880-4e1182adb0a5"},"_deposit":{"id":"28250","owners":[],"pid":{"revision_id":0,"type":"depid","value":"28250"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00028250","sets":["453:456","485:872:1583:1584"]},"item_7_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"根分法によるダイズ根粒超着生変異株の茎葉部から地下部への窒素の再循環"}]},"item_7_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2018-02","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"8","bibliographicPageStart":"1","bibliographicVolumeNumber":"70","bibliographic_titles":[{"bibliographic_title":"新潟大学農学部研究報告"},{"bibliographic_title":"新潟大学農学部研究報告","bibliographic_titleLang":"en"}]}]},"item_7_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Soybean plants can fix atmospheric dinitrogen (N_2) in root nodules by the association with soil bacteria rhizobia. Soybeans also absorb soil N from the roots, mainly in the form of nitrate in the upper fields. However, it has been known that nitrate strongly inhibits nodulation, nodule growth and nitrogen fixation activity of soybean nodules. Many hypotheses are proposed for the cause of nitrate inhibition of nodulation and nitrogen fixation, i.e., carbohydrate deprivation in nodules, decreased O_2 diffusion into nodules, which restricts the bacteroid respiration, feedback inhibition by a product of nitrate metabolism such as glutamine or asparagine. In this report, split-root system was employed for investing the recycling of ^<15>N in the opposite side of the half-roots supplied with ^<15>NO_3- (10mgN/L) in hypernodulation mutants and the parent Williams for 2 days. The percentage distribution of ^<15>N in nodules were higher in NOD1-3 (0.20%), NOD2-4 (0.47%), NOD3-7 (0.26%) than that in Williams (0.09%) possibly due to large mass of nodules of hypernodulation mutant lines. On the other hand, the percentage distribution of ^<15>N in roots was relatively lower in NOD1-3 (1.36%), NOD2-4 (1.20%), NOD3-7 (1.26%) than that in Williams (1.58%). The sum of the percentage distribution of ^<15>N in the nodules and roots were almost the same between hypernodulation lines and the parent Williams. These results indicate that recycling of N from shoot to underground parts may not be the main cause of nitrate tolerance of hypernodulation mutant lines.","subitem_description_type":"Abstract"},{"subitem_description":"ダイズは、土壌微生物の根粒菌と共生して大気中の窒素を固定利用できる。また、ダイズは、根から畑条件では主に硝酸態として、土壌由来の窒素を吸収できる。しかしながら、硝酸により、ダイズの根粒着生、根粒の生長、窒素固定活性が強く阻害されることが知られている。根粒形成と窒素固定に対する硝酸阻害機構として、根粒中の炭水化物の減少、根粒の酸素拡散の低下によるバクテロイドの呼吸低下、地上部の硝酸代謝産物、例えばグルタミンやアスパラギンによるフィードバック阻害など、多くの仮説が提出されている。本報告では、Williams と根粒長着生変異株について、根分法により、片側の根から与えた^<15>NO_3- の反対側の根への循環を調べた。2日間の処理後、非標識条件の根粒の^<15>N 分配率は、NOD1-3で0.20％、 NOD2-4で0.47％、NOD3-7で0.26％とWilliams の0.09％より高かった。これは、根粒超着生株の根粒が大きかったことによるのかもしれない。一方、非標識条件の根の^<15>N 分配率は、NOD1-3で1.36％、 NOD2-4で1.20％、 NOD3-7で1.26％とWilliams の1.58％より低かった。根と根粒の分配率の合計は、変異株と親株で同様であった。この結果は、茎葉部から地下部への窒素の再循環の違いが根粒超着生変異株の硝酸耐性の原因ではないことを示唆した。","subitem_description_type":"Abstract"}]},"item_7_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"52","nameIdentifierScheme":"WEKO"}],"names":[{"name":"大山, 卓爾"}]},{"nameIdentifiers":[{"nameIdentifier":"162250","nameIdentifierScheme":"WEKO"}],"names":[{"name":"上野, 学"}]},{"nameIdentifiers":[{"nameIdentifier":"162251","nameIdentifierScheme":"WEKO"}],"names":[{"name":"小野, 雄基"}]},{"nameIdentifiers":[{"nameIdentifier":"162252","nameIdentifierScheme":"WEKO"}],"names":[{"name":"大竹, 憲邦"}]},{"nameIdentifiers":[{"nameIdentifier":"162253","nameIdentifierScheme":"WEKO"}],"names":[{"name":"末吉, 邦"}]},{"nameIdentifiers":[{"nameIdentifier":"162254","nameIdentifierScheme":"WEKO"}],"names":[{"name":"佐藤, 孝"}]},{"nameIdentifiers":[{"nameIdentifier":"162255","nameIdentifierScheme":"WEKO"}],"names":[{"name":"七夕, 小百合"}]}]},"item_7_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"新潟大学農学部"}]},"item_7_select_19":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_7_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00183393","subitem_source_identifier_type":"NCID"}]},"item_7_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03858634","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Ohyama, Takuji"}],"nameIdentifiers":[{"nameIdentifier":"52","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ueno, Manabu"}],"nameIdentifiers":[{"nameIdentifier":"162243","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ono, Yuki"}],"nameIdentifiers":[{"nameIdentifier":"162244","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ohtake, Norikuni"}],"nameIdentifiers":[{"nameIdentifier":"162245","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sueyoshi, Kuni"}],"nameIdentifiers":[{"nameIdentifier":"162246","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sato, Takashi"}],"nameIdentifiers":[{"nameIdentifier":"162247","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tanabata, Sayuri"}],"nameIdentifiers":[{"nameIdentifier":"162248","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-08-20"}],"displaytype":"detail","filename":"70_1-8.pdf","filesize":[{"value":"692.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"70_1-8.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/28250/files/70_1-8.pdf"},"version_id":"6071edcd-5086-405d-97f0-4d5714ce9e2d"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"soybean","subitem_subject_scheme":"Other"},{"subitem_subject":"hypernodulation mutant","subitem_subject_scheme":"Other"},{"subitem_subject":"nitrate inhibition","subitem_subject_scheme":"Other"},{"subitem_subject":"split-root system","subitem_subject_scheme":"Other"},{"subitem_subject":"^<15>N recycling","subitem_subject_scheme":"Other"},{"subitem_subject":"ダイズ","subitem_subject_scheme":"Other"},{"subitem_subject":"根粒超着生変異株","subitem_subject_scheme":"Other"},{"subitem_subject":"硝酸阻害","subitem_subject_scheme":"Other"},{"subitem_subject":"根分法","subitem_subject_scheme":"Other"},{"subitem_subject":"^<15>N 再循環","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"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":"Recycling of nitrogen from shoots to underground parts in hypernodulation mutant lines of soybean by split-root experiment.","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Recycling of nitrogen from shoots to underground parts in hypernodulation mutant lines of soybean by split-root experiment."}]},"item_type_id":"7","owner":"1","path":["456","1584"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-04-20"},"publish_date":"2018-04-20","publish_status":"0","recid":"28250","relation_version_is_last":true,"title":["Recycling of nitrogen from shoots to underground parts in hypernodulation mutant lines of soybean by split-root experiment."],"weko_creator_id":"1","weko_shared_id":2},"updated":"2022-12-15T04:07:50.523073+00:00"}