蓝藻拟柱孢藻(Cylindrospermopsis)和尖头藻(Raphidiopsis)的分与合

Taxonomic separation and combination of cyanobacterial genera Cylindrospermopsis and Raphidiopsis

蓝藻的物种多样性以及进化是早期地球生命研究的一个重要内容,蓝藻分类系统为多样性的研究提供重要的基础.现代生物学和生物技术的发展也为蓝藻分类系统的修订和变化提供方法上的借鉴.KOMAREK等2014年建立了以蓝藻属水平的分类为重心的8目最新蓝藻分类系统,蓝藻属的概念和标准在新的分类系统中被明确地提出.这个蓝藻属概念的提出使得蓝藻新属创建的数量和速度迅速增加.拟柱孢藻属和尖头藻属分布广泛、适应性强,是常见的水华蓝藻,通过对拟柱孢藻属和尖头藻属合并的分类学讨论,探讨了这2个属的特点、分类发展历史和现状以及2个属的合并原因和合并过程.

The species diversity and evolution of cyanobacteria is an important task for the studies on early life of the earth. The taxonomic system of cyanobacteria provides an important basis for the study of diversity. The development of modern biology and biotechnology also provides a methodological basis for the revision and adjustment of cyanobacterial taxonomic system. The newest cyanobacterial taxonomic system proposed by KOMAREK et al.(2014)established the cyanobacterial genera as the center of the system, mainly composed of eight orders. The concept and evaluation criteria for cyanobacterial genera was clearly stated in the new taxonomic system, which leads to great increase in the number and speed of the creation of new cyanobacterial genera. Cylindrospermopsis and Raphidiopsis are common bloom-forming cyanobacteria with wide distribution and high adaptability. This paper mainly focuses on the taxonomic treatment for the combination of cyanobacterial genera Cylindrospermopsis and Raphidiopsis. Along the introduction on the general characteristics, taxonomic development history and current situation of the two genera, the similarities and differences between the two genera were compared. The reasons and process of the taxonomic combination of the two genera were stated, and finally the impact and evaluation on this taxonomic combination were discussed.