A revision of Salispina , its placement in a new family, Salispinaceae ( Rhipidiales ), and description of a fourth spec
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oi:10.5598/imafungus.2018.09.02.03
ART I CLE
A revision of Salispina, its placement in a new family, Salispinaceae (Rhipidiales), and description of a fourth species, S. hoi sp. nov. Reuel M. Bennett1,2,3, Mark Kevin Devanadera4, Gina R. Dedeles4, and Marco Thines1,2,3 1
Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Senckenberg Gesellschaft für Naturforschung, Senckenberganlage 25, D-60325 Frankfurt am Main, Germany; corresponding author e-mail: [email protected]
2
Department of Biological Sciences, Institute of Ecology, Evolution and Diversity, Goethe University Frankfurt am Main, Max-von-Laue-Str. 9, D-60438 Frankfurt am Main, Germany 3 Integrative Fungal Research Cluster (IPF), Georg-Voigt-Str. 14-16, D-60325 Frankfurt am Main, Germany 4 Department of Biological Sciences-College of Science, Department of Biochemistry-Faculty of Pharmacy, and UST Collection of Microbial Strains (USTCMS), Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila 1015, Philippines Abstract: The genus Salispina was recently described for saprotrophic estuarine oomycetes with aculeolate or spiny sporangia. The genus currently contains three species, S. intermedia, S. lobata, and S. spinosa, the latter two previously included in Halophytophthora. During a survey of mangrove-inhabiting oomycetes in the Philippines, an isolate of Salispina (USTCMS 1611), was obtained from a decaying mangrove leaf. This isolate differed from other species in the genus in a unique combination of morphological and biological characters. Phylogenetic analysis revealed it to be the sister lineage of S. lobata. Consequently, the new species name S. hoi is introduced for the isolate. In addition, Salispina spp. grouped with Sapromyces of Rhipidiales with strong support, but differs from all other known genera of the order in the weak formation of hyphal constrictions, and absence of basal thalli and a holdfast network. The new family Salispinaceae is, therefore, described to accommodate Salispina in the order Rhipidiales.
Key words: Mangrove new taxa Oomycota phylogenetics Sapromyces taxonomy
Article info: Submitted: 20 March 2018; Accepted: 17 August 2018; Published: 29 August 2018.
INTRODUCTION Mangroves are inhabited by saprotrophic oomycetes, fungallike eukaryotes in the kingdom Straminipila (Fell & Master 1975, Leaño et al. 2000, Leaño 2001, Thines 2014, Marano et al. 2016, Bennett et al !" #
colonisers of fallen senescent mangrove leaves and, thus, have an important role in the nutrient cycling in estuarine ecosystems (Newell et al. 1987, Nakagiri et al. 1989, Leaño et al. 2000). Of the diverse mangrove oomycetes, Salispina is a genus currently comprising three described species (Li et al. 2016): S. intermedia (type species), S. spinosa (syn. Phytophthora spinosa var. spinosa, Halophytophthora spinosa var. spinosa), and S. lobata (syn. Phytophthora spinosa var. lobata, Halophytophthora spinosa var. lobata). This genus was erected to accommodate saprotrophic mangro
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