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在Trichoderma中的线粒体基因组组装,注释和比较分析

Xiaoting Wang¹, Zhiyin Wang¹, Fanxing Yang¹

¹Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, School of Tropical Agriculture and Forestry, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China.

International journal of molecular sciences

|November 27, 2024

概括

这项研究为Trichoderma真菌提供了42个新的线粒体基因组,揭示了显著的进化多样性并确定了关键的遗传变异. 这些发现增强了我们对Trichoderma的理解.

科学领域:

菌类学菌类学是指菌类学.
基因组学就是基因组学.
进化生物学进化生物学

背景情况:

三体是一种多样化的真菌属,有400多个物种,但它的遗传信息,特别是线粒体基因组,仍然在很大程度上未被探索.
线粒体DNA (mtDNA) 对细胞功能和进化研究至关重要.

研究的目的:

为了表征Trichoderma物种的新型线粒体基因组 (线粒体基因组).
研究Trichoderma线粒体内遗传多样性和进化动态.
提供一个全面的基因组资源,以了解Trichoderma进化和生物控制潜力.

主要方法:

测序和组装42个新的Trichoderma线索基因组.
整合了18个先前发表的线粒基因组,用于遗传学分析.
对线粒基因组大小,基因含量,GC含量和内部变异进行比较基因组分析.
用整个线粒体基因组数据和2830个单拷贝核基因进行了家族遗传学分析.
在积极选择下识别突变热点和基因.

主要成果:

60个Trichoderma线粒体的表征,范围从26,276到94,608 bp.
基于线粒体基因组和核基因系谱,在Trichoderma中识别了六种不同的进化血统.
在整个进化分支中发现了线粒基因组大小,基因数,tRNA复制数和内核含量的显著变异.
确定了三个突变热点 (nad3,cox2,nad5附近) 引发了主要的线粒体基因组变化.
对特定基因 (atp9,cob,nad4L,nad5,rps3) 起作用的积极选择的证据.

结论:

该研究提供了Trichoderma线粒体的大量数据集,揭示了广泛的遗传和进化多样性.
对比分析强调了线粒基因组结构和内容的动态变化,与进化分歧有关.
鉴定突变热点和积极选择的基因提供了对Trichoderma适应性进化机制的见解.
这种基因组资源对于在生物控制真菌中Trichoderma线粒体的功能作用和进化轨迹的未来研究是有价值的.

关键词:

三角皮肤 (Trichoderma) 是一种三角皮肤.遗传变异是一种遗传变异.线粒体基因组的基因组人类的基因组学.阳性选择是一种积极的选择.

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