Circadian Rhythm of the Prokaryote Synechococcus sp. RF-1 | Zendy

Tan-Chi Huang | Zendy; Jenn Tu | Zendy; TeJin Chow | Zendy; TsungHsien Chen | Zendy

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Circadian Rhythm of the Prokaryote Synechococcus sp. RF-1

Author(s) -

Tan-Chi Huang,

Jenn Tu,

TeJin Chow,

TsungHsien Chen

Publication year - 1990

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.92.2.531

Subject(s) - circadian rhythm , rhythm , synechococcus , endogeny , biology , circadian clock , fixation (population genetics) , chemistry , biochemistry , cyanobacteria , medicine , endocrinology , bacteria , genetics , gene

The prokaryotic Synechococcus sp. RF-1 exhibited a nitrogen fixation circadian rhythm with characteristics remarkably similar to the circadian rhythm of eukaryotes. The rhythm had a free-running period of about 24 hours when the length of the preen-trained cycle did not differ too much from 24 hours, and it was insensitive to changes in temperature from 22 degrees C to 33 degrees C. Because the endogenous rhythm of nitrogen fixation was not affected by a phase-shift of its previous cycles, the circadian rhythm in Synechococcus sp. RF-1 was not considered to be controlled simply by a feedback mechanism.

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