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对地方性南极真菌 Ant arctomyces pellizariae 的全基因组测序揭示了一种冰结合蛋白、一组罕见的次生代谢物基因簇,并为 Thelebolales 系统发育提供了新的见解。

Whole-genome sequencing of the endemic Antarctic fungus Antarctomyces pellizariae reveals an ice-binding protein, a scarce set of secondary metabolites gene clusters and provides insights on Thelebolales phylogeny.

机构信息

Centro de Formação em Ciências Ambientais, Universidade Federal do Sul da Bahia, Porto Seguro, 45.810-000, Brazil; Departamento de Bioquímica e Imunologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, 31.270-901, Brazil.

Departamento de Bioquímica e Imunologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, 31.270-901, Brazil.

出版信息

Genomics. 2020 Sep;112(5):2915-2921. doi: 10.1016/j.ygeno.2020.05.004. Epub 2020 May 7.

Abstract

The snow-covered surfaces of Antarctica comprise an extreme environment that favors the development of life forms with adaptations to adverse low-temperature habitats. The ability to survive and such temperatures might involve the production of antifreeze proteins and ice-binding proteins that attenuate the effects of intense cold temperatures. He, we sequenced and reconstructed the nuclear and mitochondrial genomes of the endemic Antarctic fungus Antarctomyces pellizariae UFMGCB 12416. We then have identified a putative ice-binding protein-coding gene, mapped the presence of secondary metabolite gene clusters, and reconstructed the phylogenetic relationships of a A. pellizariae with others Leotiomycetes from the alignment of hundreds of orthologous single-copy proteins. Our results will deepen the understanding of microbial ice-binding proteins and the genomic aspects of psychrophilic fungi. DATASET: The GenBank/EMBL/DDBJ accession number for the gene sequence of ice-binding protein from A. pellizariae determined in this study is MN867686. The Whole Genome Shotgun project of strain A. pellizariae UFMGCB 12416 has been deposited at DDBJ/ENA/GenBank under accession WCAA00000000. The version described in this paper is version WCAA01000000. The mitochondrial genome has been deposited under accession MT197497.

摘要

南极洲被冰雪覆盖的表面构成了一个极端的环境,有利于适应不利低温生境的生命形式的发展。在如此低温下生存和繁殖的能力可能涉及到抗冻蛋白和冰结合蛋白的产生,这些蛋白可以减轻极寒温度的影响。在这里,我们对南极真菌 Antarctomyces pellizariae UFMGCB 12416 的核和线粒体基因组进行了测序和重建。然后,我们鉴定了一个可能的冰结合蛋白编码基因,绘制了次生代谢物基因簇的存在图谱,并根据数百个直系同源单拷贝蛋白的比对重建了 A. pellizariae 与其他 Leotiomycetes 的系统发育关系。我们的研究结果将加深对微生物冰结合蛋白和嗜冷真菌基因组方面的理解。数据:本研究中确定的 A. pellizariae 冰结合蛋白基因序列的 GenBank/EMBL/DDBJ accession 编号为 MN867686。A. pellizariae UFMGCB 12416 的全基因组 shotgun 项目已在 DDBJ/ENA/GenBank 下以 WCAA00000000 号 accession 提交。本文中描述的版本是 WCAA01000000 版本。线粒体基因组已提交至 MT197497 号 accession。

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