Ordinal Placement of Selected Marine Dothideomycetes Inferred from Small Subunit Ribosomal DNA Sequence Analysis
-
W. Y. Tam
Abstract
Lignicolous marine ascomycetes can be divided into two major taxonomic groups: the Halosphaeriales in oceanic and coastal waters, both intertidal and submerged, and the Dothideomycetes that occur primarily in mangroves. While some genera of marine Dothideomycetes are well circumscribed (e.g., Leptosphaeria, Phaeosphaeria), others cannot be assigned, based on their morphology, to an appropriate order with certainty (e.g., Aigialus, Paraliomyces). Recently, a number of studies on the molecular phylogeny of the Halosphaeriales have been undertaken, while limited systematic investigation on marine Dothideomycetes is available. In the current study, small subunit ribosomal DNA of Aigialus grandis, A. parvus, Helicascus nypae, Julella avicenniae and Paraliomyces lentiferus was sequenced and subjected to phylogenetic analysis to determine their ordinal affinity. These taxa grouped consistently within the Pleosporales with good statistical support. Relationships of these species with other taxa in the Pleosporales remain unresolved. The monophyly of Aigialus species and Helicascus species implies that they represent good genera in the order, with significant morphological delimitation from other genera.
Copyright © 2003 by Walter de Gruyter GmbH & Co. KG
Articles in the same Issue
- To Gerald T. Boalch, with Our Gratitude
- Growth and Survival of the Invasive Green Alga Codium fragile ssp. tomentosoides in Tide Pools on a Rocky Shore in Nova Scotia
- Structure of the Macroalgal Community Associated with the Seagrass Halodule wrightii Ascherson in the Abrolhos Marine National Park, Brazil
- The Life History of Lophothamnion hirtum (Hook. f. et Harv.) Womersley (Rhodophyta, Ceramiaceae) from Southern New Zealand
- Gametangium-like Structures as Propagation Buds in Codium edule Silva (Bryopsidales, Chlorophyta)
- Ultrastructural Study of Zoosporogenesis in the Siphonous Green Alga Derbesia tenuissima (Chlorophyta)
- Schimmelmannia venezuelensis sp. nov. (Gloiosiphoniaceae, Rhodophyta) from Venezuela
- Fatty Acids of Species in the Genus Codium
- Rheological Characteristics of Fucoidan Isolated from Commercially Cultured Cladosiphon okamuranus
- Effects of Light, Salinity and Inorganic Nitrogen on Cell Growth and Spirolide Production in the Marine Dinoflagellate Alexandrium ostenfeldii (Paulsen) Balech et Tangen
- Morphology of Prorocentrum minimum (Dinophyceae) in the Baltic Sea and in Chesapeake Bay: Comparison of Cell Shapes and Thecal Ornamentation
- Ordinal Placement of Selected Marine Dothideomycetes Inferred from Small Subunit Ribosomal DNA Sequence Analysis
- Meetings
Articles in the same Issue
- To Gerald T. Boalch, with Our Gratitude
- Growth and Survival of the Invasive Green Alga Codium fragile ssp. tomentosoides in Tide Pools on a Rocky Shore in Nova Scotia
- Structure of the Macroalgal Community Associated with the Seagrass Halodule wrightii Ascherson in the Abrolhos Marine National Park, Brazil
- The Life History of Lophothamnion hirtum (Hook. f. et Harv.) Womersley (Rhodophyta, Ceramiaceae) from Southern New Zealand
- Gametangium-like Structures as Propagation Buds in Codium edule Silva (Bryopsidales, Chlorophyta)
- Ultrastructural Study of Zoosporogenesis in the Siphonous Green Alga Derbesia tenuissima (Chlorophyta)
- Schimmelmannia venezuelensis sp. nov. (Gloiosiphoniaceae, Rhodophyta) from Venezuela
- Fatty Acids of Species in the Genus Codium
- Rheological Characteristics of Fucoidan Isolated from Commercially Cultured Cladosiphon okamuranus
- Effects of Light, Salinity and Inorganic Nitrogen on Cell Growth and Spirolide Production in the Marine Dinoflagellate Alexandrium ostenfeldii (Paulsen) Balech et Tangen
- Morphology of Prorocentrum minimum (Dinophyceae) in the Baltic Sea and in Chesapeake Bay: Comparison of Cell Shapes and Thecal Ornamentation
- Ordinal Placement of Selected Marine Dothideomycetes Inferred from Small Subunit Ribosomal DNA Sequence Analysis
- Meetings
