紫外辐射下蓝藻的适应与进化机理

Mechanisms of adaptation and evolution of cyanobacteria under ultraviolet radiation

摘要:

蓝藻是地球上最古老的生物之一，存在于从湖泊到沙漠几乎所有的生境中。作为太阳光谱中的重要组成部分，紫外光通过辐射作用对蓝藻的生长及进化产生重要而深远的影响。本文综述了紫外辐射对蓝藻生长的影响及其机制、对蓝藻生长的调控及蓝藻对紫外辐射的适应性策略。此外，本文探讨了紫外辐射与蓝藻进化之间的关系，阐述了蓝藻与紫外辐射交互作用在生物进化研究中的科学价值，分析了影响蓝藻抗紫外辐射的环境因素，并展望了紫外辐射下蓝藻适应与进化的未来研究方向。

Abstract:

Cyanobacteria, among the oldest life forms on Earth, are discovered in nearly all habitats ranging from lakes to deserts. As an integral component of the solar spectrum, ultraviolet (UV) is known to exert profound effects on the growth and evolution of cyanobacteria through its radiative impact. This paper reviews the mechanisms by which UV radiation affects cyanobacterial growth, the regulatory role of UV in the growth of cyanobacteria, and the adaptive strategies of cyanobacteria to UV. Additionally, this paper explores the relationship between UV radiation and cyanobacterial evolution and discusses the scientific value of the interactions between cyanobacteria and UV radiation in the research on biological evolution. Furthermore, this paper expounds the environmental factors affecting cyanobacterial resistance to UV and envisions the future research directions concerning the adaptation and evolution of cyanobacteria exposed to UV radiation.