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在对比环境条件下生长的根瘤中共生菌株AgB32和AgKG'84/4的基因组草图

Draft Genomes of Symbiotic Strains AgB32 and AgKG'84/4 from Root Nodules of growing under Contrasted Environmental Conditions.

作者信息

Normand Philippe, Pujic Petar, Abrouk Danis, Vemulapally Spandana, Guerra Trina, Carlos-Shanley Camila, Hahn Dittmar

机构信息

Université Claude-Bernard Lyon 1, Université de Lyon, UMR 5557 CNRS Ecologie Microbienne, Villeurbanne, Cedex 69622, France.

Texas State University, Department of Biology, 601 University Drive, San Marcos, TX 78666, USA.

出版信息

J Genomics. 2022 Aug 8;10:61-68. doi: 10.7150/jgen.75779. eCollection 2022.

DOI:10.7150/jgen.75779
PMID:35979511
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9379372/
Abstract

The genomes of two nitrogen-fixing strains, AgB32 and AgKG'84/4, were isolated from spore-containing (spore+) and spore-free (spore-) root nodules of , but they did not sporulate upon reinfection. The two strains are described as representatives of two novel candidate species Phylogenomic and ANI analyses indicate that each strain represents a novel species within cluster 1, with genome sizes of 6.3 and 6.7 Mb smaller than or similar to those of other cultivated -infective cluster 1 strains. Genes essential for nitrogen-fixation, clusters of orthologous genes, secondary metabolite clusters and transcriptional regulators analyzed by comparative genomic analyses were typical of those from -infective cluster 1 cultivated strains in both genomes. Compared to other cultivated -infective strains with large genomes, those of AgB32 and AgKG'84/4 had lost 380 or 409 genes, among which one cluster, one gene and the cluster, which indicates genome erosion is taking place in these two strains.

摘要

从[植物名称]含孢子（孢子+）和无孢子（孢子-）的根瘤中分离出两种固氮菌株AgB32和AgKG'84/4的基因组，但它们在再次感染时不形成孢子。这两种菌株被描述为两个新候选物种的代表。系统基因组学和ANI分析表明，每个菌株代表簇1内的一个新物种，其基因组大小比其他培养的感染性簇1菌株小6.3和6.7 Mb或与之相似。通过比较基因组分析分析的固氮必需基因、直系同源基因簇、次生代谢物簇和转录调节因子在两个基因组中都是来自感染性簇1培养菌株的典型特征。与其他具有大基因组的培养感染性菌株相比，AgB32和AgKG'84/4的菌株分别丢失了380或409个基因，其中一个[基因簇名称]簇、一个[基因名称]基因和[基因簇名称]簇，这表明这两种菌株正在发生基因组侵蚀。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8cb0/9379372/3a8c0c6661b5/jgenv10p0061g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8cb0/9379372/56170561b81c/jgenv10p0061g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8cb0/9379372/3a8c0c6661b5/jgenv10p0061g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8cb0/9379372/56170561b81c/jgenv10p0061g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8cb0/9379372/3a8c0c6661b5/jgenv10p0061g002.jpg

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本文引用的文献

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3
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Microbiol Resour Announc. 2022 Nov 17;11(11):e0092522. doi: 10.1128/mra.00925-22. Epub 2022 Oct 26.
New Phytol. 1997 Jul;136(3):375-405. doi: 10.1046/j.1469-8137.1997.00755.x.
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