多个位置的分子遗传学分析揭示了两种新的Amphichorda (Bionectriaceae,Hypocreales) 的物种
Zhi-Qin Wang1, Jing Zhao1, Quan-Ying Dong1
1Yunnan Herbal Laboratory, College of Ecology and Environmental Sciences, Yunnan University, Kunming, Yunnan, China Yunnan University Kunming China.
MycoKeys
|July 12, 2024
概括
在中国,两种新的真菌物种Amphichorda excrementa和Amphichorda kunmingensis在动物便上被发现. 遗传学分析证实了它们独特的遗传构成,扩大了Amphichorda属.
科学领域:
- 菌类学 菌类学是指菌类学.
- 菌类分类法 菌类分类法 菌类分类法
- 生物多样性研究 生物多样性研究
背景情况:
- 之前属于Cordycipitaceae的真菌属Amphichorda现在被归类为Bionectriaceae.
- 安菲索达物种主要在各种基板上发现,特别是动物便.
- 中国的云南省是一个具有显著真菌生物多样性的地区.
研究的目的:
- 鉴定和描述来自中国云南省的安菲索达新物种.
- 进行全面的遗传学分析,以确认发现的物种的新性.
- 将新物种的形态特征与现有的Amphichorda物种进行比较.
主要方法:
- 从动物便中分离和培养真菌物种.
- 五个基因 (nrSSU,nrLSU,tef-1α,rpb1,rpb2) 和ITS区域的DNA提取和测序.
- 使用生成的序列数据进行遗传学分析.
- 形态特征和比较. 形态特征和比较.
主要成果:
- 他们发现了两种新物种,即Amphichorda excrementa和Amphichorda kunmingensis.
- 基于五基因和ITS数据的家谱分析支持了新物种的独特性.
- 提供了详细的形态描述和与七种已知的Amphichorda物种的比较.
- 这两种新物种都是从公园环境中的动物便中分离出来的.
结论:
- 发现Amphichorda排泄物和Amphichorda kunmingensis扩大了Amphichorda属内的已知的多样性.
- 这项研究证实了Bionectriaceae家族对Amphichorda的分类.
- 这项研究有助于了解中国的真菌生物多样性,特别是在共基质上.
相关概念视频
01:51Lampbrush Chromosomes
7.9K
In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops...
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops...
7.9K
02:54Evolutionary Relationships through Genome Comparisons
5.7K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
5.7K
03:21Phylogenetic Trees
45.3K
Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
45.3K
01:23Phylogeny
43.8K
Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
43.8K
01:31Formation of Species
39.2K
Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.
39.2K
02:29Hybrid Zones
17.0K
Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
17.0K