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Abstract Detail


Bryological and Lichenological Section/ABLS

Zepeda, Randy [1], Fisher, Kirsten [1].

Cryptic Lineage Diversity in Syntrichia ruralis, a Model Desiccation Tolerant Organism.

Desiccation Tolerance (DT), the ability to suspend metabolic activity and survive near complete loss of cellular water. The DT trait is relatively common in the oldest land plant lineages, such as the mosses, and the transcriptome of the desert moss Syntrichia ruralis has been characterized extensively in an effort to identify some of the key genes involved in moss DT. DNA from individuals comprising a representative geographic sampling of S. ruralis has been successfully extracted and amplified for nuclear and chloroplast gene regions, and these sequence data suggest the presence of cryptic lineages within this taxon. On a regional scale, there appears to be very little correlation between phylogenetic structure and geography, suggesting that factors other than geographic isolation may be driving diversification within S. ruralis. Here we present an initial investigation into potential correlations between cryptic diversity and functional variation in S. ruralis.

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1 - California State University, Los Angeles, Department of Biological Sciences, 5151 State University Dr., Los Angeles, CA, 90032, USA

Keywords:
desiccation
phylogenetics
phylogeography
cryptic diversity.

Presentation Type: Oral Paper:Papers for Sections
Session: 31
Location: 554A/Convention Center
Date: Tuesday, August 3rd, 2010
Time: 9:00 AM
Number: 31001
Abstract ID:671


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