A Review and Assessment of the Shared-Pathway Hypothesis for the Maintenance of Signal Honesty in Red Ketocarotenoid-Based Coloration
A Review and Assessment of the Shared-Pathway Hypothesis for the Maintenance of Signal Honesty in Red Ketocarotenoid-Based Coloration
复制标题
红色酮类胡萝卜素显色中维持信号诚实的共享途径假说的回顾和评估
DOI：
10.1093/icb/icab056
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发表时间：
2021
影响因子：
2.6
通讯作者：
Hill, Geoffrey E
中科院分区：
文献类型：
--
作者：
Powers, Matthew J;Hill, Geoffrey E
几十年来，科学家们已经注意到陆生和水生动物的个体状况与类胡萝卜素着色之间的联系。与同一物种中颜色较浅的成员相比，产生更鲜艳的类胡萝卜素着色的生物往往具有更好的生理表现和行为表现。传统的解释之间的这种关联的装饰色彩和性能调用需要的颜色显示是昂贵的，但这种假设成本的证据是模棱两可的。另一种解释的条件依赖性类胡萝卜素为基础的着色，共享途径假说（SPH），开发的响应。这一假说提出，红色酮类胡萝卜素为基础的着色与核心细胞过程有关，涉及线粒体能量代谢的共享途径，使类胡萝卜素的浓度成为线粒体功能的指标。自从提出这一假说以来，已经在几个物种中进行了对其中提出的机制的实证检验。在这篇手稿中，我们回顾了SPH和越来越多的研究，研究了类胡萝卜素为基础的着色和线粒体功能之间的联系。我们还讨论了未来的战略评估SPH更有效地解开证据，同时支持类胡萝卜素资源权衡的证据。
For decades, scientists have noted connections between individual condition and carotenoid-based coloration in terrestrial and aquatic animals. Organisms that produce more vibrant carotenoid-based coloration tend to have better physiological performance and behavioral displays compared with less colorful members of the same species. Traditional explanations for this association between ornamental coloration and performance invoked the need for color displays to be costly, but evidence for such hypothesized costs is equivocal. An alternative explanation for the condition-dependence of carotenoid-based coloration, the Shared-Pathway Hypothesis (SPH), was developed in response. This hypothesis proposes that red ketocarotenoid-based coloration is tied to core cellular processes involving a shared pathway with mitochondrial energy metabolism, making the concentration of carotenoids an index of mitochondrial function. Since the presentation of this hypothesis, empirical tests of the mechanisms proposed therein have been conducted in several species. In this manuscript, we review the SPH and the growing number of studies that have investigated a connection between carotenoid-based coloration and mitochondrial function. We also discuss future strategies for assessing the SPH to more effectively disentangle evidence that may simultaneously support evidence of carotenoid-resource tradeoffs.