燕窝真菌 Nidula shingbaensis（Nidulariaceae，Agaricales）的完整线粒体基因组。

Pub Date : 2024-07-30 eCollection Date: 2024-01-01 DOI:10.1080/23802359.2024.2385595

Qi Qu, Shu Zhang, Yong-Jie Zhang

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引用次数: 0

摘要

燕窝真菌涉及六个不同的属，但迄今只有其中一个属（即Cyathus）有可用的线粒体基因组（有丝分裂基因组）。在本研究中，我们以 Nidula shingbaensis K. Das & R.L. Zhao 2013 为代表，报告了 Nidula 属的首个有丝分裂基因组。有丝分裂基因组是一个 65,793 bp 的环状分子，GC 含量为 26.2%。共有 43 个基因，包括 14 个典型的蛋白质编码基因、26 个 tRNA 基因、2 个 rRNA 基因和 1 个独立的基因间开放阅读框（ORF）。有丝分裂基因组中有三个内含子（两个在 cox1 中，一个在 cob 中），每个内含子都包含一个编码 LAGLIDADG 内切酶的 ORF。基于线粒体氨基酸序列的系统进化分析证实了 N. shingbaensis 在姬松茸科中的系统进化位置。本研究为今后研究姬松茸科真菌进化提供了一个跳板。

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Complete mitochondrial genome of the bird's nest fungus Nidula shingbaensis (Nidulariaceae, Agaricales).

Bird's nest fungi involve six different genera, but only one of these genera (i.e. Cyathus) have available mitochondrial genomes (mitogenomes) to date. In this study, we report the first mitogenome in the genus Nidula with Nidula shingbaensis K. Das & R.L. Zhao 2013 as a representative. The mitogenome is a circular molecule of 65,793 bp with a GC content of 26.2%. There are a total of 43 genes, including 14 typical protein-coding genes, 26 tRNA genes, two rRNA genes, and one free-standing intergenic open reading frame (ORF). Three introns (two in cox1 and one in cob) are present in the mitogenome, with each containing an ORF encoding for a LAGLIDADG endonuclease. Phylogenetic analysis based on mitochondrial amino acid sequences confirms the phylogenetic placement of N. shingbaensis in Nidulariaceae in Agaricales. This study serves as a springboard for future investigation on fungal evolution in Nidulariaceae.

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