López-Sepulcre Andrés, Amaral Jeferson R, Gautam Nimisha, Mohamed Amina, Naik Saismit
Department of Ecology and Evolution, Cornell University, Ithaca, NY 14853, USA.
Department of Ecology and Evolution, Cornell University, Ithaca, NY 14853, USA.
Trends Ecol Evol. 2024 Dec;39(12):1111-1118. doi: 10.1016/j.tree.2024.08.002. Epub 2024 Aug 30.
Stoichiometric homeostasis is the ability of life to maintain inner chemical constancy despite changes in the environment and resources. Organisms can be stoichiometrically homeostatic to different degrees. This variation can be substantial even within species, but is ignored in most studies of ecological stoichiometry. Recent studies suggest that resource limitations are an important selective pressure behind homeostasis, but are contradictory in direction, likely owing to differences in nutrient storage strategies. Understanding the selective pressures underlying stoichiometric homeostasis, and its potential for rapid evolution, are key to predicting eco-evolutionary dynamics. This calls for the development of an evolutionary theory of stoichiometric homeostasis that incorporates rapid evolution, as well as for empirical studies to test the underlying mechanisms.
化学计量稳态是指生命在环境和资源发生变化时维持内部化学恒定的能力。生物体在化学计量上的稳态程度各不相同。即使在同一物种内，这种差异也可能很大，但在大多数生态化学计量研究中却被忽视了。最近的研究表明，资源限制是稳态背后的一个重要选择压力，但在方向上存在矛盾，这可能是由于养分储存策略的差异所致。理解化学计量稳态背后的选择压力及其快速进化的潜力，是预测生态进化动态的关键。这需要发展一种包含快速进化的化学计量稳态进化理论，以及进行实证研究来检验其潜在机制。
