维生素B12在细菌与真核藻类相互作用中的功能研究进展

The roles of vitamin B12 in the interaction between bacteria and eukaryotic algae

摘要:

自然环境中细菌与藻类发生着直接或间接的相互作用，这些相互作用对双方的生理功能、群落组成、逆境抵御等方面具有重要影响。维生素B12 (VB12)是一种结构复杂、功能重要的维生素，是许多真核藻类所必需的生长因子。由于VB12在自然界中只能由产VB12的细菌合成，产VB12细菌对真核藻类的生理功能具有重要影响。本文将主要介绍近年来在细菌-真核藻类相互作用中VB12所参与的藻类生长调节、抗逆反应与基因表达调控等方面的研究进展，并讨论在细菌-真核藻类分子相互作用这一研究模式中应注重的发展方向。

Abstract:

The direct or indirect interactions between bacteria and algae occur widely in nature environment, and impact greatly on the physiological functions, community structures, and stress responses of both partners. Vitamin B12 (VB12), a structurally complex and functionally important vitamin, is required for the growth of many eukaryotic algae. The fact that VB12 can only be formed by bacteria and archaea implies that VB12-producing prokaryotes play an important role for algae. In this review, we focus on the recent reseach of VB12-involved algal growth promotion, stress tolerance and gene expression regulatoin in the interaction between bacteria and algae. Based on the recent progroess, we also discuss the future research directions in the research mode of bacteria-algae interaction.