Distribution patterns of haplotypes for symbionts from Umbilicaria esculenta and U. muehlenbergii reflect the importance of reproductive strategy in shaping population genetic structure
文献类型： 外文期刊
作者： Cao, Shunan 1 ; Zhang, Fang 1 ; Liu, Chuanpeng 2 ; Hao, Zhihua 3 ; Tian, Yuan 4 ; Zhu, Lingxiang 5 ; Zhou, Qiming 2 ;
作者机构： 1.Polar Res Inst China, SOA Key Lab Polar Sci, Shanghai 200136, Peoples R China
2.Harbin Inst Technol, Sch Life Sci & Technol, Harbin 150080, Peoples R China
3.Tibet Acad Agr & Anim Husb Sci, Inst Agr Prod Qual Stand & Testing Res, Lhasa 850032, Peoples R China
4.Inner Mongolia Tech Coll Construct, Coll Engn Management, Huimin Dist 010070, Hohhot, Peoples R China
5.Beijing Inst Genom, CAS Key Lab Genome Sci & Informat, Beijing 100101, Peoples R China
6.Chinese Acad Sci, Inst Microbiol, Beijing 100101, Peoples R China
关键词： AMOVA;Haplotype;Lichen;Mycobiont;Photobiont;Phylogenetic analysis
期刊名称：BMC MICROBIOLOGY （ 影响因子：3.605； 五年影响因子：4.283 ）
ISSN： 1471-2180
年卷期： 2015 年 15 卷
页码：
收录情况： SCI
摘要： Background: 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. Result: 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. Conclusions: 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.
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