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＜departmental bulletin paper＞
Effect of Ammonium Excess on Tomato Plants : III. Changes of Carbohydrate Metabolismunder Ammonium Excess

Creator
Creator Name
脇本, 賢三
Wakimoto, Kenzo
Affiliation
Affiliation Name
農林水産省中国農業試験場
Creator Name
山田, 芳雄
Yamada, Yoshio
Affiliation
Affiliation Name
九州大学農学部植物栄養･肥料学教室
Laboratory of Soil Fertility and Plant Nutrition, Faculty of Agriculture, Kyushu University
Language
Japanese
Publisher
九州大學農學部
Faculty of Agriculture, Kyushu University
Date
1985-03
Source Title
Science bulletin of the Faculty of Agriculture, Kyushu University
Vol
39
Issue
4
First Page
121
Last Page
126
Publication Type
Version of Record
Access Rights
open access
JaLC DOI
https://doi.org/10.15017/22171
Related DOI
九州大學農學部學藝雜誌 || 39(4) || p121-126
Science bulletin of the Faculty of Agriculture, Kyushu University || 39(4) || p121-126
http://www.agr.kyushu-u.ac.jp/
Related URI
九州大學農學部學藝雜誌 || 39(4) || p121-126
Science bulletin of the Faculty of Agriculture, Kyushu University || 39(4) || p121-126
http://www.agr.kyushu-u.ac.jp/
Relation
九州大學農學部學藝雜誌 || 39(4) || p121-126
Science bulletin of the Faculty of Agriculture, Kyushu University || 39(4) || p121-126
http://www.agr.kyushu-u.ac.jp/

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Details

Record ID
22171
Peer-Reviewed
Unrefereed
Subject Terms
トマト
アンモニウム過剰
炭水化物代謝
カリウム
糖
インベルダーゼ活性
グルコース
HMP系
NH_4-N
NO_3-N
ISSN
0368-6264
NCID
AN0005519X
Notes
More carbohydrates such as reducing sugars, non-reducing sugars and crude starch in leaves were accumulated in NH_4-N fed plants than in NO_3-N fed plants. The amount of reducing sugars accumulated in NH_4-N fed plants was about twice as much as in NO_3-N fed plants. More reducing and non-reducing sugars were also accumulated in roots of NH_4-N fed plants than in those of NO_3-N fed plants, and more reducing sugars in roots were accumulated between 8 a. m. and noon in NH_4-N fed plants than in NO_3-N fed ones. Invertase activity in leaves was higher in NH_4-N fed plants than in NO_3-N fed plants. It was consequently presumed that the increase of invertase activity had a close relation to the accumulation or reducing sugars in NH_4-N fed plants. It was also presumed that HMP shunt is playing greater part in the course of glucose metabolism in NH_4-N fed plants than EMP pathway, judging from the result of experiment of feeding with glucose-1-^<14>C and glucose-6-^<14>C.
1.NO_3-N培養植物よりNH_4-N培養植物では葉身,根共に還元糖含量が増加することが認められた.非還元糖,粗デンプン含量についても同様の傾向であった.また培養液中のNH_4-N濃度が高い程増大した.2.葉身の還元糖については,含量はいずれの時間でもNH_4-N培養植物の方が高く,12時以降の低下はNH_4-N培養植物でやや小さい傾向を示した.3.葉身のインベルターゼ活性はNO_3-N培養植物に比べNH_4-N培養植物で高く,処理開始後6日目頃まで増加の傾向を示した.本酵素活性の増大は葉中の還元糖の蓄積とも深くかかわっていると推察した.4.NH_4-N培養植物での葉身中および根中における糖含量の増大はそれぞれの器官の呼吸促進の一要因になっていると推察した.5.G-1-^<14>CとG-6-^<14>Cの供与試験から,NH_4-N培養植物では葉身および根のグルコース代謝経路としてHMP系が活性化されていることを指摘した.
Created Date 2012.06.29
Modified Date 2022.11.11

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