Bioluminescence in the symbiotic squid Euprymna scolopes is controlled by a daily biological rhythm
Bioluminescence in the symbiotic squid Euprymna scolopes is controlled by a daily biological rhythm
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共生鱿鱼 Euprymna scolopes 的生物发光是由日常生物节律控制的
DOI：
10.1007/bf00193435
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
M. McFall
中科院分区：
文献类型：
--
作者：
Katherine J. Boettcher;E. Ruby;M. McFall
在动物和发光细菌之间的大多数共生体中，人们一直认为细菌共生体持续发光，并且动物对发光输出的控制是通过精心制作的附属结构介导的，例如围绕宿主发光器官的色素细胞和肌肉快门。然而，我们已经发现，虽然在乌贼Euprymna sputteropes的光器官，共生细胞的费氏弧菌不产生连续均匀的发光水平，而是表现出可预测的周期性波动，每个细胞发出的光的量。这种日常的生物节律表现出昼夜节律模式的许多特征，并在环境黑暗开始之前的几个小时内在幼年动物中产生升高强度的共生体发光。在完整的光器官与新释放的细菌的细菌的特定发光的比较支持共生体发光的特定活性的直接宿主调节的存在，不需要辅助组织的干预。提出了一个包含现有证据的模型，用于控制大肠杆菌的生长和发光活性。黑腹蛛/费氏弧菌光器官共生。
In most symbioses between animals and luminous bacteria it has been assumed that the bacterial symbionts luminesce continuously, and that the control of luminescent output by the animal is mediated through elaborate accessory structures, such as chromatophores and muscular shutters that surround the host light organ. However, we have found that while in the light organ of the sepiolid squid Euprymna scolopes, symbiotic cells of Vibrio fischeri do not produce a continuously uniform level of luminescence, but instead exhibit predictable cyclic fluctuations in the amount of light emitted per cell. This daily biological rhythm exhibits many features of a circadian pattern, and produces an elevated intensity of symbiont luminescence in juvenile animals during the hours preceding the onset of ambient darkness. Comparisons of the specific luminescence of bacteria in the intact light organ with that of newly released bacteria support the existence of a direct host regulation of the specific activity of symbiont luminescence that does not require the intervention of accessory tissues. A model encompassing the currently available evidence is proposed for the control of growth and luminescence activity in the E. scolopes/V. fischeri light organ symbiosis.
影响因子：
2.9
作者：
EBERHARD, A;BURLINGAME, AL;OPPENHEIMER, NJ
通讯作者：
OPPENHEIMER, NJ