Feb. 24 - Aug. 12, 1998 Dr. Shouyu Guo Systematic Mycology and Lichenology Laboratory Institute of Microbiology Chinese Academy of Sciences Beijing, China Dr. Shouyu Guo's project in the Pritzker lab was an important component of Qiuxin Wu and Gregory Mueller's project, "Comparative Studies on Macrofungi of China and Eastern North America," funded by National Science Foundation. The objectives of this US-China cooperative research project are: 1) obtaining preliminary data on the biodiversity of macrofungi in China and comparing these data to the mycota of eastern North America; 2) testing several general biogeographic hypotheses by investigating genetic divergence and variability among and within geographically isolated populations of species that have presumed eastern Asia and eastern North America - Central America disjunct distributions using DNA sequencing techniques. Our Chinese collaborator, Prof. Jiangchun Wei, specializes in lichenology, with research interests in disjunct distributions of lichen species. He is especially interested in examining relationships between several putatively vicariant pairs of species in the Umbilicariaceae. His hypotheses were previously based only on morphology. To address these questions, however, he and his Postdoctoral Associate Dr. Shouyu Guo, are developing a robust phylogeny that incorporates the target taxa. Dr. Guo spent 5 months at the Field Museum and generated some interesting sequence data to understand the lichen disjunct distributions.

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