Sporolithon tenue sp. nov. (Sporolithales, Corallinophycidae, Rhodophyta): A new rhodolith-forming species from the tropical southwestern Atlantic
Summary A new species conforming to the generic description of Sporolithon was found forming small (1–3 cm in diameter) rhodoliths at 18–75 m depth on the eastern coast of Brazil. Sporolithon tenue Bahia, Amado‐Filho, Maneveldt et W.H. Adey, sp. nov. differs from other species of Sporolithon in havi...
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Published in | Phycological research Vol. 62; no. 1; pp. 44 - 54 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Richmond
Blackwell Publishing Ltd
01.01.2014
Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | Summary
A new species conforming to the generic description of Sporolithon was found forming small (1–3 cm in diameter) rhodoliths at 18–75 m depth on the eastern coast of Brazil. Sporolithon tenue Bahia, Amado‐Filho, Maneveldt et W.H. Adey, sp. nov. differs from other species of Sporolithon in having a thin, primary vegetative thallus of only 45–250 μm in thickness composed of up to 20 cell layers. Sporolithon tenue can build thicker crusts by overgrowths of thalli with new hypothallia. The absence of a layer of elongate cells at the base of the tetrasporangial chambers and the shedding of senescent tetrasporangial sori are also characters that separate the new species from all other currently recognized species within the genus. Observations from recently collected material and from herbarium specimens show that specimens previously designated as Sporolithon africanum (Foslie) J. Afonso‐Carillo in Brazil correspond to Sporolithon tenue. Molecular phylogenetic analyses of psbA sequence alignments show that the new species is phylogenetically distinct within the genus Sporolithon. |
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Bibliography: | South African National Research Foundation ark:/67375/WNG-7G4T0H9M-D ArticleID:PRE12033 CNPq Appendix S1. Information about the samples used for the psbA molecular analyses.Appendix S2. Genetic divergence (%) of the psbA gene within Sporolithales. FAPERJ istex:4D0253CCC6642E7CEBDE70CED31DD34E6C7AD6D9 Brazilian Scientific Agencies CAPES ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1322-0829 1440-1835 |
DOI: | 10.1111/pre.12033 |