[The concept of bacterial species].

Ana-Maria Tănase, Tatiana Vassu, Ileana Stoica
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Abstract

Prokaryotes are the most abundant living organisms and also most diverse from genetically and metabolically point of view, being responsible for the majority of biogeochemical processes playing the most important role in life cycle on the planet. Considering this, there is a general agreement among taxonomists, that there is a very small number of bacterial species recognized and described today, mostly because of controversial issues concerning bacterial species concept. One of the most accepted approaches, even today, is the polyphasic taxonomy because it is based on diverse information, obtained from classic taxonomy but also from molecular level. The development of new molecular techniques, especially sequencing rRNA genes conducted to an improved concept, that we intended to evaluate in this review, and even more, to reconstruction of group specific phylogenetic tree.

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[细菌种类的概念]。
原核生物是最丰富的生物,从遗传和代谢的角度来看也是最多样化的,负责大多数生物地球化学过程,在地球生命周期中起着最重要的作用。考虑到这一点,分类学家普遍认为,目前已知和描述的细菌种类非常少,这主要是因为关于细菌种类概念的争议问题。即使在今天,多相分类法也是最被接受的方法之一,因为它基于多种信息,既有经典分类法的信息,也有分子水平的信息。新的分子技术的发展,特别是rRNA基因测序的改进概念,我们打算在这篇综述中进行评估,甚至更重要的是,重建特定群体的系统发育树。
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