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Abstract Detail



Systematics Section/ASPT

Hall , John D [1], Adair, Jillian [2], McCourt, Richard [3].

Phylogeny and systematics of the unicellular green alga Cylindrocystis (Zygnematophyceae, Charophyta) and the necessary reinterpretation of fossil zygnematophytes.

Cylindrocystis is a widespread microscopic green alga. The genus is known to be polyphyletic, and species identification is complicated by the structural simplicity the vegetative cells. Consequently, species are often identified using the characteristics of the sexual spores. We performed a series of tests using traditional mating experiments to document reproductive characteristics of several strains of Cylindrocystis. We also performed molecular phylogenetic analyses. We will present the taxonomic and phylogenetic results of our investigation including new lineages and species of Cylindrocystis. During this experiment, we also discovered that the spores are resistant to acetolysis and likely would be preserved in the fossil record. This has implications for interpretation of the identity of some common microfossils in sediments.


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1 - University Of Maryland, Plant Science And Landscape Architecture, 2102 Plant Sciences Building, College Park, MD, 20742, USA
2 - Drexel University
3 - Academy of Natural Sciences

Keywords:
Phylogeny
algae
Charophyta
Cylindrocystis
Fossil.

Presentation Type: Oral Paper:Papers for Sections
Session: 38
Location: Salmon/Snake/Boise Centre
Date: Wednesday, July 30th, 2014
Time: 11:15 AM
Number: 38005
Abstract ID:245
Candidate for Awards:None


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