扩大松病原体Lecanosticta acicola的基因组学揭示了正在进行的遗传混合的模式
Marina Marcet-Houben1,2,3, Fernando Cruz4, Jéssica Gómez-Garrido4
1Barcelona Supercomputing Centre (BSC-CNS), Barcelona, Spain.
mSystems
|February 16, 2024
概括
西班牙北部的松树病原体*Lecanosticta acicola*的两个主要血统之间发生了基因混合. 南方和北方血统之间的这种杂交表明,这种入侵性真菌中可能会出现新的特征进化.
科学领域:
- 菌类学 菌类学是指菌类学.
- 植物病理学 植物病理学
- 人口基因组学 人口基因组学
背景情况:
- *Lecanosticta acicola* 导致棕色斑点针病,影响全球的松树.
- 存在两种不同的L. acicola血统,分别引入欧洲.
- 这些血统在西班牙和法国的部分地区共存,这引发了人们对它们的人口动态的质疑.
研究的目的:
- 为介绍关于Lecanosticta acicola的第一个全基因组研究.
- 为了分析来自西班牙北部的70个*L. acicola*分离物的种群基因组学.
- 调查L. acicola*血统之间的遗传混合和表型差异.
主要方法:
- 一个参考*L. acicola*基因组的基因组组合.
- 使用全基因组数据对70个自然分离物的种群基因组学分析.
- 在20种化合物中分析酶活性,以评估表型变异.
主要成果:
- 来自西班牙北部的大多数孤立物属于南方血统.
- 发现了南方和北方*L. acicola*血统之间的内侵的证据.
- 内向的菌株表现出与南方血统的表型相似性.
结论:
- 在西班牙北部的两个主要的L. acicola血统之间发生了活跃的遗传混合.
- 这种在最近扩张的地区的杂交可能会导致新的特征.
- 了解这些动态对于管理棕色斑点针病至关重要.
更多相关视频
相关概念视频
Evolutionary 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
Incomplete Dominance
22.6K
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
22.6K
Genome Size and the Evolution of New Genes
8.0K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
8.0K
Hybrid 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
What is Population Genetics?
57.9K
A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.
57.9K
Gene Flow
35.1K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.1K


