Distribution patterns of haplotypes for symbionts from Umbilicaria esculenta and U. muehlenbergii reflect the importance of reproductive strategy in shaping population genetic structure.
Distribution patterns of haplotypes for symbionts from Umbilicaria esculenta and U. muehlenbergii reflect the importance of reproductive strategy in shaping population genetic structure.
复制标题
石耳和石耳共生体单倍型的分布模式反映了生殖策略在塑造群体遗传结构中的重要性
DOI：
10.1186/s12866-015-0527-0
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发表时间：
2015-10-15
期刊：
影响因子：
4.2
通讯作者：
Zhou Q
中科院分区：
文献类型：
--
作者：
Cao S;Zhang F;Liu C;Hao Z;Tian Y;Zhu L;Zhou Q
地衣真菌组分及其光合作用伙伴的多样性反映了生态和进化因素。本研究利用核糖体DNA内转录间隔区（ITS nrDNA）的分子标记技术，分析了石脐和石脐的遗传多样性。muehlenbertophora及其相关的绿色藻类。这表明，繁殖策略是真菌选择性藻类的主要原因。联合通过有性孢子传播的短梗霉对光合作用伙伴的选择性比短梗霉低。esculenta，具有营养繁殖策略。这两种脐藻属物种之间的基因型多样性（真菌和藻类）的差异很小，虽然它们的核苷酸多样性可以有很大的差异。本研究表明，地衣形成真菌的有性生殖策略是较少的选择性相对于他们的光合生物，并揭示了有性生殖和营养繁殖允许地衣产生类似的多样性，以适应环境。本研究将有助于阐明不同繁殖策略的地衣是如何适应环境变化的。
The diversity of lichen fungal components and their photosynthetic partners reflects both ecological and evolutionary factors. In present study, molecular investigations of the internal transcribed spacer of the nuclear ribosomal DNA (ITS nrDNA) region were conducted to analyze the genetic diversity of Umbilicaria esculenta and U. muehlenbergii together with their associated green algae. It was here demonstrated that the reproductive strategy is a principal reason for fungal selectivity to algae. U. muehlenbergii, which disperses via sexual spores, exhibits lower selectivity to its photosynthetic partners than U. esculenta, which has a vegetative reproductive strategy. The difference of genotypic diversity (both fungal and algal) between these two Umbilicaria species is low, although their nucleotide diversity can vary greatly. The present study illustrates that lichen-forming fungi with sexual reproductive strategies are less selective with respect to their photobionts; and reveals that both sexual and vegetative reproduction allow lichens to generate similar amounts of diversity to adapt to the environments. The current study will be helpful for elucidating how lichens with different reproductive strategies adapt to changing environments.