Busca avançada
Ano de início
Entree
Conteúdo relacionado
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

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

Texto completo
Autor(es):
Necchi, Jr., Orlando [1] ; Oliveira, Mariana Cabral [2]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Sao Paulo State Univ, Dept Bot & Zool, BR-15054000 Sao Paulo - Brazil
[2] Univ Sao Paulo, Dept Bot, BR-05508900 Sao Paulo - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF PHYCOLOGY; v. 47, n. 3, p. 680-686, JUN 2011.
Citações Web of Science: 9
Resumo

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)

Processo FAPESP: 08/00708-5 - Sistemática do gênero Batrachospermum (Rhodophyta, Batrachospermales) no Brasil com base em dados morfológicos e moleculares
Beneficiário:Orlando Necchi Junior
Linha de fomento: Auxílio à Pesquisa - Regular