Journal article
Identity and phylogenetic placement of Spirogyra species (Zygnematophyceae, Charophyta) from California streams and elsewhere
Journal of phycology, v 49(3), pp 588-607
01 Jun 2013
PMID: 27007047
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Diversity of the filamentous green algae in the genus Spirogyra (Zygnematophyceae) was investigated from more than 1,200 stream samples from California. We identified 12 species of Spirogyra not previously known for California (CA), including two species new to science, Spirogyra californica sp. nov. and Spirogyra juliana sp. nov. Environmental preferences of the Californian species are discussed in the light of their restricted distribution to stream habitats with contrasting nutrient levels. We also investigated the systematic relationships of Spirogyra species from several continents using the chloroplast-encoded genes ribulose-1,5-bisphosphate carboxylase/hydrogenase large subunit (rbcL) and the beta subunit of the ATP synthase (atpB). Californian species were positioned in most major clades of Spirogyra. The phylogeny of Spirogyra and its taxonomic implications are discussed, such as the benefits of combining structural and molecular data for more accurate and consistent species identification. Considerable infraspecific genetic variation of globally distributed Spirogyra species was observed across continental scales. This finding suggests that structurally similar species from distant regions may be genetically dissimilar and that Spirogyra may contain a large number of cryptic species. Correlating the morphological and genetic variation within the genus will be a major challenge for future researchers.
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Details
- Title
- Identity and phylogenetic placement of Spirogyra species (Zygnematophyceae, Charophyta) from California streams and elsewhere
- Creators
- Rosalina Stancheva - California State University, San MarcosJohn D. Hall - Academy of Natural Sciences of Drexel UniversityRichard M. McCourt - Drexel UniversityRobert G. Sheath - California State University, San Marcos
- Publication Details
- Journal of phycology, v 49(3), pp 588-607
- Publisher
- Wiley
- Number of pages
- 20
- Grant note
- 1020948 / Division Of Environmental Biology; National Science Foundation (NSF); NSF - Directorate for Biological Sciences (BIO) California State Water Resources Control Board
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES); Academy of Natural Sciences of Drexel University
- Web of Science ID
- WOS:000319874900016
- Scopus ID
- 2-s2.0-84878707715
- Other Identifier
- 991019167862304721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Marine & Freshwater Biology
- Plant Sciences