Patterns of fungal–algal symbiont association in Usnea aurantiaco-atra reveal the succession of lichen–moss communities in Fildes Peninsula, Antarctica

  • Shunan Cao Key Laboratory for Polar Science, State Ocean Administration, Polar Research Institute of China, Shanghai
  • Fang Peng China Center for Type Culture Collection, College of Life Sciences, Wuhan University, Wuhan
  • Hongyuan Zheng College of Environmental Science and Engineering, Tongji University, Shanghai
  • Chuanpeng Liu School of Life Science and Technology, Harbin Institute of Technology, Harbin
  • Qiming Zhou School of Life Science and Technology, Harbin Institute of Technology, Harbin
Keywords: Haplotype; ITS rDNA; linkage disequilibrium; mycobiont; populations; reproduction

Abstract

Usnea aurantiaco-atra is the most widespread flora in Fildes Peninsula. There are two growth types of U. aurantiaco-atra: the erect form on rocks and the prostrate form associated with mosses. Phylogenetic analysis showed that individuals of the two growth forms share genotypes. Moreover, haploid disequilibrium testing indicated no significant genetic difference for the two growth forms when fungal and algal internal transcribed spacer rDNA were treated as two alleles of one lichen individual. The two growth forms of U. aurantiaco-atra appear to reflect different stages of lichen–moss community succession. A mode is proposed for demonstrating the occurrence of this succession.

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Published
2017-10-06
How to Cite
Cao, S., Peng, F., Zheng, H., Liu, C., & Zhou, Q. (2017). Patterns of fungal–algal symbiont association in <em>Usnea aurantiaco-atra </em&gt;reveal the succession of lichen–moss communities in Fildes Peninsula, Antarctica. Polar Research, 36. Retrieved from https://polarresearch.net/index.php/polar/article/view/2656
Section
Research Articles