New insights into Plectospira genus (Oomycetes, Straminipila): morphological and molecular analyses

Author(s)

Jeronimo, Gustavo Henrique ; Jesus, Ana L. ; Rocha, Sarah C. O. ; Goncalves, Danilo R. ; Pires-Zottarelli, Carmen L. A.

• Document type: Journal article
• Source: PHYTOTAXA; v. 307, n. 3, p. 191-198, MAY 26 2017.
• Web of Science Citations: 1

Abstract

We analyzed the morphology and phylogenetic placement of three isolates of Plectospira belonging to Plectospira gemmifera and P. myriandra that were isolated from soil, water bodies and reservoir sediment. The molecular data are from the partial large subunit and the complete internal transcribed regions of the ribosomal DNA. The genus is characterized by the presence of lobulated zoosporangia and mode of zoospore discharge forming an evanescent cluster in the exit orifice. Our isolates clustered together with the single isolate of the genus available in GenBank, however, our phylogenetic analysis and morphological characterization showed that the isolate identified as Plectospira myriandra CBS 523.87 is possibly another taxon. In addition, P. gemmifera is recorded for the first time in Brazil and its sequences were inserted for the first time in a phylogenetic reconstruction. (AU)

• FAPESP's process: 14/16358-4 - Taxonomical, molecular, ecological and/or ultrastructural analysis of Blastocladiomycota, Chytridiomycota and Oomycota from reservoirs of the "Médio Tietê/Alto Sorocaba", São Paulo State, Brazil
• Grantee: Gustavo Henrique Jerônimo Alves
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 09/53898-9 - Paleolimnological reconstruction of Guarapiranga Reservoir and diagnosis of water and sediment current quality of SPMR water supply reservoirs facing their management
• Grantee: Carlos Eduardo de Mattos Bicudo
• Support Opportunities: Research Projects - Thematic Grants