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首页> 外文期刊>Systematic and Applied Microbiology >Ereboglobus luteus gen. nov sp nov from cockroach guts, and new insights into the oxygen relationship of the genera Opitutus and Didymococcus (Verrucomicrobia: Opitutaceae)
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Ereboglobus luteus gen. nov sp nov from cockroach guts, and new insights into the oxygen relationship of the genera Opitutus and Didymococcus (Verrucomicrobia: Opitutaceae)

机译：Ereboglobus luteus gen。 11月11日从蟑螂肠道，新的洞察力进入Werva Opitutus和DidyMococcus的氧气关系（疣状胬瘤：ophittaceae）

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摘要

We isolated a novel member of the phylum Verrucomicrobia from the hindgut of the cockroach Shelfordella lateralis. Strain Ho45 is a yellow-pigmented, motile coccus that represents a new genus-level lineage with less than 93% sequence similarity to the 16S rRNA genes of other species in the family Opitutaceae. Ultra structural analysis revealed a Gram-negative cell envelope with an outer membrane and a periplasmic space. In its ability to ferment sugars to propionate and acetate as major products, strain Ho45 resembles its closest relative, Opitutus terrae. However, the strains differed in their relationship to oxygen. Although strain Ho45 grew and consumed oxygen at sub-atmospheric concentrations (1-4%), both growth rate and cell yield decreased strongly with increasing oxygen concentration in the headspace. By contrast, O. terrae, previously described as an obligate anaerobe, proved to be facultatively aerobic, with highest growth rates and cell yields at 2% and 16% oxygen, respectively. Also the closely related Didymococcus (Diplosphaera) colitermitum, previously described as an obligately aerobic microaerophile, showed a fermentative metabolism under anoxic conditions, forming the same products from glucose as strain Ho45 and O. terrae. Based on phenotypic and phylogenetic evidence, we propose strain Ho45 as the type strain of a novel genus, Ereboglobus luteus gen. nov. sp. nov., and provide an emended description of the family Opitutaceae and the genera Opitutus and Didymococcus. (C) 2017 Elsevier GmbH. All rights reserved.
机译：我们从蟑螂Shelfordella左侧的后古孤立了一个疣状疣的新成员。菌株HO45是黄色色素的运动可口可球，其代表新的血管水平谱系，其序列相似度小于93％的序列相似性与家庭蛋白酶的其他物种的16S rRNA基因。超结构分析揭示了具有外膜的革兰阴性细胞包络和周质空间。在其作为主要产品中丙酸糖和乙酸盐作为主要产品的糖类的能力，HO45菌株类似于其最近的相对，Opitutus Terrae。然而，菌株与氧气的关系不同。虽然菌株HO45在亚常压浓度下增长和消耗氧气（1-4％），但增长速率和电池产率随着顶空中的氧浓度的增加而强烈降低。相比之下，以前被描述为IndageAnaerobe，被证明是散热性的，并且分别具有2％和16％氧的最高生长率和细胞产量。此外，密切相关的迪姆多卡（Dipposphaera）凝聚体以前描述为一种常规的有氧微侵勒，在缺氧条件下表现出发酵代谢，从葡萄糖作为菌株HO45和O. Terrae形成相同的产物。基于表型和系统发育证据，我们将菌株HO45提出作为新型属植物，Ereboglobus叶黄素Gen的类型菌株。 11月。 SP。 11月。，并提供家庭蛋白酶和蚜虫和脱幼儿孢偶糖和脱蛋白的化的化为性描述。 （c）2017 Elsevier GmbH。版权所有。

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