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诱导湖生颤藻进行厌氧光合自养生长。

Induction of anaerobic, photoautotrophic growth in the cyanobacterium Oscillatoria limnetica.

作者信息

Oren A, Padan E

出版信息

J Bacteriol. 1978 Feb;133(2):558-63. doi: 10.1128/jb.133.2.558-563.1978.

Abstract

Anaerobic photoautotrophic growth of the cyanobacterium Oscillatoria limnetica was demonstrated under nitrogen in the presence of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (5micron), a constant concentration of Na2S (2.5 mM), and constant pH (7.3). The photoanaerobic growth rate (2 days doubling time) was similar to that obtained under oxygenic photoautotrophic growth conditions. The potential of oxygenic photosynthesis is constitutive in the cells; that of anoxygenic photosynthesis is rapidly (2 h) induced in the presence of Na2S in the light in a process requiring protein synthesis. The facultative anaerobic phototrophic growth physiology exhibited by O. limnetica would seem to represent an intermediate physiological pattern between the obligate anaerobic one of photosynthetic bacteria and the oxygenic one of eucaryotic algae.

摘要

在氮气环境下,当存在3-(3,4-二氯苯基)-1,1-二甲基脲(5微米)、恒定浓度的Na2S(2.5毫摩尔)和恒定pH值(7.3)时,证明了蓝藻湖生颤藻能够进行厌氧光合自养生长。光厌氧生长速率(2天倍增时间)与在有氧光合自养生长条件下获得的速率相似。细胞中氧光合的潜力是组成型的;在光照下,在需要蛋白质合成的过程中,当存在Na2S时,无氧光合的潜力会迅速(2小时)被诱导。湖生颤藻所表现出的兼性厌氧光养生长生理似乎代表了光合细菌的专性厌氧生理模式和真核藻类的有氧生理模式之间的一种中间生理模式。

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