汽水湖光合成細菌Rhodobacter sphaeroidesの窒素代謝と炭素代謝に及ぼす硝酸呼吸の影響

島根大学農学部研究報告 29 巻 31-36 頁 1995-12-20 発行
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タイトル
汽水湖光合成細菌Rhodobacter sphaeroidesの窒素代謝と炭素代謝に及ぼす硝酸呼吸の影響
タイトル
Effects of Nitrate Respiration on Nirogen and Carbon Metabolisms in Photosynthetic Bacterium, Rhodobacter sphaeroides Isolated from Brackish Water
タイトル 読み
キスイコ コウゴウセイ サイキン RHODOBACTER SPHAEROIDES ノ チッソ タイシャ ト タンソ タイシャ ニ オヨボス ショウサン コキュウ ノ エイキョウ
著者
酒井 猛治
滝波 弘一
収録物名
島根大学農学部研究報告
Bulletin of the Faculty of Agriculture, Shimane University
29
開始ページ 31
終了ページ 36
収録物識別子
ISSN 0370940X
内容記述
抄録・要旨
A denitrifying strain of phototrophic purple nonsulfur bacterium, Rhodobacter sphaeroides NII2, which was isolated from, Lake Nakaumi, was characterized for nitrogen and carbon metabolisms. This strain grew well utilizing (NH_4)_2HP0_4 as introgen source, but was incapable of ultilizing KN0_3 as nitrogen source under anaerobic condition. On the other hand KN0_3 was reduced to N_2 through several intermediary metabolites under both light and dark culture conditions. The denitrification activities of dark-grown cells were 1.5-fold higher than those of light-grown cells, indicating that the denitrification of the strain NII2 might be repressed by light irradiation. In addition, light-grown cells produced large amounts of alanin derived from pyruvate, the final product of glycolytic pathway. The amounts of alanin decreased with increasing of KN0_3 added. In contrast, dark-grown cells produced large amounts of glutamate derived from 2-oxo-glutarate, an intermediate of TCA cycle. These results indicate that light irradiation and nitrate respiration have a close relation to nitrogen and carbon metabolisms in the bacterium.
言語
日本語
資源タイプ 紀要論文
出版者
島根大学農学部
Shimane University, Faculty of Agriculture
発行日 1995-12-20
アクセス権 オープンアクセス
関連情報
[NCID] AN00108015