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首页> 外文期刊>Polar biology >Schizotrichacean cyanobacteria from central Spitsbergen (Svalbard)
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Schizotrichacean cyanobacteria from central Spitsbergen (Svalbard)

机译：斯匹次卑尔根中部（斯瓦尔巴特群岛）的Schizotrichacean蓝细菌

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摘要

The phenotypic characterization and genetic identification of cyanobacteria according to modern poly-phasic approach are difficult, especially in the case of coccoid and simple trichal and fine morphotypes with restricted morphological features. Molecular evaluation is not always possible because of the difficult transfer of all the natural populations into culture; exact characterization of natural material is therefore desirable. In several extreme habitats of central Spitsbergen (vicinity of Petu-niabukta) morphologically distinct species of the genus Schizothrix were recognized. They were evidently specific and important constituents of different biocenoses of the Svalbard tundra ecosystems. Several of them did not correspond to any cyanobacterial morphospecies, described up to now in the literature. In this article, we have selected little known or new members of the family Schizothrich-aceae with their taxonomic descriptions. Unique ecology is characteristic of all the taxa presented here. Two species described from similar localities in Swedish Lapland and one species known from the Atlantic coasts of N. Norway were recognized, and two taxa were described as new species. Cyanophycean microflora of both polar regions shows a certain ecological and morphological similarity, but it is mostly genotypically differentiated and contains numerous species, occurring exclusively in extreme habitats of de-glaciated parts of only one of the two distant areas.
机译：根据现代多相方法很难对蓝细菌进行表型鉴定和遗传鉴定，尤其是在球状和简单的三旋和精细形态型且形态特征受限的情况下。由于所有自然种群都难以转移到文化中，因此分子评估并非总是可行的。因此，需要对天然材料进行精确的表征。在斯匹次卑尔根州中部的几个极端栖息地（Petu-niabukta的附近地区），发现了裂殖壶菌属的形态学上截然不同的物种。它们显然是斯瓦尔巴特苔原生态系统不同生物调查的特定和重要组成部分。迄今为止，它们中的几个与任何蓝藻形态物种都不对应。在本文中，我们通过分类学描述选择了Schizothrich-aceae科的鲜为人知的成员或新成员。这里介绍的所有分类单元都具有独特的生态特征。从瑞典拉普兰类似地区描述的两个物种和从北挪威的大西洋海岸已知的一个物种被识别，其中两个分类单元被描述为新物种。两个极地地区的蓝藻菌群都显示出一定的生态和形态相似性，但大部分是基因型分化的，并且包含许多物种，仅在两个遥远地区之一的冰川地区的极端生境中发生。

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  • 来源
    《Polar biology》 |2013年第12期|1811-1822|共12页
  • 作者

    Jin Komarek; Lubomir Kovacik;

  • 作者单位

    Institute of Botany of the Academy of Sciences of the Czech Republic, Dukelska 135, 379 82 Trebon, Czech Republic,Faculty of Science, University of South Bohemia, Branisovska 31, 370 05 Ceske Budejovice, Czech Republic;

    Department of Botany, Faculty of Natural Sciences, Comenius University in Bratislava, Revova 39, 811 02 Bratislava, Slovakia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Cyanoprokaryotes; Ecology; Genus Schizothrix; Taxonomy; Tundra microvegetation;

    机译：蓝原核生物;生态;裂殖体属;分类;苔原微植被;

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