Two new species of Halophytophthora from Brazil
During a survey of oomycetes in a mangrove area of São Paulo state, Brazil, a high number of isolates of Halophytophthora and related genera were recovered from leaves and water samples. In this study, we analysed the morphology and phylogenetic relationships of the isolates of Halophytophthora along with four ex-types provided by CBS-KNAW Culture Collection. Maximum likelihood and Bayesian analyses of the internal transcribed spacer (ITS) and large subunit (LSU) rDNA regions confirmed previous evidence of the polyphyly of the genus and revealed the presence of two yet undescribed species. The two new species, Halophytophthora souzae and H. insularis, belong to the Halophytophthora sensu stricto clade and are described herein based on their morphology and/or phylogenetic position.
KeywordsITS LSU Mangroves Oomycota Peronosporales
We are indebted to “Instituto Florestal” for the permission given to collect samples at “Ilha do Cardoso”, Cananéia, São Paulo, SP; to Manoel Osorio Neves Junior for his valuable help during sampling and to Marcela Castilho Boro for preparing dried cultures and depositing the isolates in the CCIBt culture collection.
We also wish to thank São Paulo Research Foundation – FAPESP for the fellowships given to A.L. Jesus (Process No. 2013/01409-0) and for the financial support given to C.L.A. Pires-Zottarelli (Process No. 2012/50222-7), and CAPES (“Coordenação de Aperfeiçoamento de Pessoal de Nível Superior”) for the fellowship and support given to A.V. Marano (“Ciência Sem Fronteiras” Program, “Atração de Jovens Talentos” DRI-CAPES Process No. 006/2012). CNPq (“Conselho Nacional de Desenvolvimento Científico e Tecnológico”) is also acknowledged for the grant given to C.L.A. Pires-Zottarelli (Process No. 304411/2012-4).
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