Enhancement of Glucose Utilization in Provision of Carbon Skeletons for Ammonium Assimilation in Wheat Roots - 九大コレクション | 九州大学附属図書館

＜紀要論文＞
Enhancement of Glucose Utilization in Provision of Carbon Skeletons for Ammonium Assimilation in Wheat Roots

作成者	作成者名 Koga, Nobuhisa 所属機関所属機関名 Department of Agricultural Chemistry, Division of Agriculture, Kyushu University Graduate School
	作成者名 Ikeda, Motoki 池田, 元輝イケダ, モトキ所属機関所属機関名 Laboratory of Plant Nutrition, Division of Soil Science and Plant Production, Department of Plant Resources, Faculty of Agriculture, Kyushu University 九州大学農学部生物資源環境学科植物生産科学講座
	作成者名古賀, 伸久所属機関所属機関名九州大学大学院農学研究院
本文言語	英語
出版者	Kyushu University
出版者	九州大学農学部
発行日	2000-11
収録物名	九州大学大学院農学研究院紀要
巻	45
号	1
開始ページ	7
終了ページ	13
出版タイプ	Version of Record
アクセス権	open access
Crossref DOI	https://doi.org/10.5109/24351

本文ファイル

ファイル	ファイルタイプ	サイズ	閲覧回数	説明
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詳細

PISSN	0023-6152
NCID	AA00697606
レコードID	24351
査読有無	査読無
主題	Glucose Utilization
	Ammonium assimilation
	Wheat root
ISSN	0023-6152
NCID	AA00697606
注記	In providing carbon skeletons to be expended for amide synthesis during ammonium assimilation, glucose utilization in roots was studied. The roots of young wheat plants grown without nitrogen for 3d and grown with 4 mM NO_3^- or NH_4^+ for 1d were fed with ^<14>C－glucose for 3h in the presence of NO_3^- or NH_4^+, and the distribution of ^<14>C-metabolites within the plants was examined. The NH_4^+ supply changed the distribution of ^<14>C to a greater extent than the NO_3^- supply. In roots grown with NH_4^+ for 1d, the incorporation of ^<14>C into 80% ethanol-soluble materials in roots increased, and the ratio of ^<14>C in basic metabolites to ^<14>C in acidic metabolites in the fraction was high. The concentration and ^<14>C-labeling of citrate and malate in roots were reduced by the prolonged supply of NH_4^+. In contrast, the asparagine concentration conspicuously increased, and asparagine was heavily labeled in roots of NH_4^+-grown plants. When roots were treated with methionine sulfoximine, however, ^<14>C-labeling of basic metabolites did not increase despite the supply of NH_4^+. These results indicate that the supply of NH_4^+ has a stimulatory effect on the degradation of glucose in wheat roots to provide　carbon skeletons necessary for amide synthesis during NH_4^+ assimilation.
登録日	2012.08.02
更新日	2023.12.12