Resonating circadian clocks enhance fitness in cyanobacteria
Resonating circadian clocks enhance fitness in cyanobacteria
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DOI：
10.1073/pnas.95.15.8660
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发表时间：
1998-07-21
影响因子：
11.1
通讯作者：
Johnson, CH
中科院分区：
文献类型：
--
作者：
Yan, OY;Andersson, CR;Johnson, CH
在一些生物体中，当它们保持在光/暗循环时，寿命、生长和发育速率得到改善，所述周期与内源性生物钟的周期最佳地“共振”。然而，据我们所知，没有研究表明，生殖健康本身是通过内源性时钟和环境周期之间的共振来改善的。我们测试的适应性意义的昼夜节律编程通过测量的相对健身竞争下的各种菌株的蓝藻表达不同的昼夜节律的时期。具有类似于光/暗周期的昼夜节律周期的菌株在竞争下以表明软选择作用的方式受到青睐。
In some organisms longevity, growth, and developmental rate are improved when they are maintained on a light/dark cycle, the period of which "resonates" optimally with the period of the endogenous circadian clock. However, to our knowledge no studies have demonstrated that reproductive fitness per se is improved by resonance between the endogenous clock and the environmental cycle. We tested the adaptive significance of circadian programming by measuring the relative fitness under competition between various strains of cyanobacteria expressing different circadian periods. Strains that had a circadian period similar to that of the light/dark cycle were favored under competition in a manner that indicates the action of soft selection.