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丛枝菌根弗兰克氏菌新种，一种感染桤木的弗兰克氏菌，不能在纯培养中生长，但能在植物体内形成孢子。

Candidatus Frankia nodulisporulans sp. nov., an Alnus glutinosa-infective Frankia species unable to grow in pure culture and able to sporulate in-planta.

机构信息

Université de Lyon, Université Lyon 1, CNRS, UMR5557, Ecologie Microbienne, INRA, UMR 1418, 43 bd du 11 novembre 1918, F-69622 Villeurbanne, France.

Université de Lyon, Université Lyon 1, CNRS, UMR5557, Ecologie Microbienne, INRA, UMR 1418, 43 bd du 11 novembre 1918, F-69622 Villeurbanne, France.

出版信息

Syst Appl Microbiol. 2020 Nov;43(6):126134. doi: 10.1016/j.syapm.2020.126134. Epub 2020 Sep 28.

DOI:10.1016/j.syapm.2020.126134
PMID:33059155
Abstract

We describe a new Frankia species, for three non-isolated strains obtained from Alnus glutinosa in France and Sweden, respectively. These strains can nodulate several Alnus species (A. glutinosa, A. incana, A. alnobetula), they form hyphae, vesicles and sporangia in the root nodule cortex but have resisted all attempts at isolation in pure culture. Their genomes have been sequenced, they are significantly smaller than those of other Alnus-infective species (5Mb instead of 7.5Mb) and are very closely related to one another (ANI of 100%). The name Candidatus Frankia nodulisporulans is proposed. The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene and draft genome sequences reported in this study for AgTrS, AgUmASt1 and AgUmASH1 are MT023539/LR778176/LR778180 and NZ_CADCWS000000000.1/CADDZU010000001/CADDZW010000001, respectively.

摘要

我们描述了一种新的弗兰克氏菌物种，该物种源自法国和瑞典的分别来自桤木的 3 个非分离菌株。这些菌株可以感染几种桤木物种（桤木、银毛柳、桤木），它们在根瘤皮层中形成菌丝、泡囊和孢子囊，但一直无法在纯培养中进行分离。它们的基因组已经测序，与其他感染桤木的物种相比，它们的基因组明显较小（5Mb 而不是 7.5Mb），彼此之间非常相似（ANI 为 100%）。我们提出了“Candidatus Frankia nodulisporulans”的名称。本研究中报道的 AgTrS、AgUmASt1 和 AgUmASH1 的 16S rRNA 基因和基因组草案序列的 GenBank/EMBL/DDBJ accession 编号分别为 MT023539/LR778176/LR778180 和 NZ_CADCWS000000000.1/CADDZU010000001/CADDZW010000001。

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