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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

PHYLOGENETIC AFFINITIES OF ``CHANTRANSIA{''} STAGES IN MEMBERS OF THE BATRACHOSPERMALES AND THOREALES (RHODOPHYTA)

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Author(s):
Necchi, Jr., Orlando [1] ; Oliveira, Mariana Cabral [2]
Total Authors: 2
Affiliation:
[1] Sao Paulo State Univ, Dept Bot & Zool, BR-15054000 Sao Paulo - Brazil
[2] Univ Sao Paulo, Dept Bot, BR-05508900 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF PHYCOLOGY; v. 47, n. 3, p. 680-686, JUN 2011.
Web of Science Citations: 9
Abstract

This study evaluated the phylogenetic relationship among samples of ``Chantransia{''} stage of the Batrachospermales and Thoreales from several regions of the world based on sequences of two genes-the plastid-encoded RUBISCO LSU gene (rbcL) and the nuclear SSU ribosomal DNA gene (SSU rDNA). All sequences of ``Chantransia macrospora{''} were shown to belong to Batrachospermum macrosporum based on both molecular markers, confirming evidence from previous studies. In contrast, nine species are now associated with ``Chantransia pygmaea,{''} including seven species of the Batrachospermales and two of the Thoreales. Therefore, the presence of ``C. macrospora{''} in a stream can be considered reliable evidence that it belongs to B. macrosporum, whereas the occurrence of ``C. pygmaea{''} does not allow the recognition of any particular species, since it is associated with at least nine species. Affinities of ``Chantransia{''} stages to particular taxa were congruent for 70.5% of the samples comparing the rbcL and SSU analyses, which were associated with the same or closely related species for both markers. Sequence divergences have been reported in the ``Chantransia{''} stage in comparison to the respective gametophyte, and this matter deserves further attention. (AU)

FAPESP's process: 08/00708-5 - Systematics of the genus Batrachospermum (Rhodophyta, Batrachospermales) in Brazil based on morphological and molecular data
Grantee:Orlando Necchi Junior
Support type: Regular Research Grants