Intraornatosporaceae (Gigasporales), a new family with two new genera and two new species

Abstract

A new family (Intraornatosporaceae), two new genera (Intraornatospora, Paradentiscutata), two new species (P. bahiana, P. maritima), and a new combination (I. intraornata) are presented in the Gigasporales. The genera, both with diagnostic introverted ornamentations on the spore wall, are distinguished by spore wall structure and germ shield characteristics. The new species, detected in NE Brazil, can be differentiated by their projections on the outer spore surface. Partial sequences of the LSU rRNA gene place both species next to I. intraornata in a monophyletic major clade related to Gigasporaceae and Dentiscutataceae.

Could biological invasion by Cryptostegia madagascariensis alter the composition of the arbuscular mycorrhizal fungal community in semi-arid Brazil?

“…In this work we adopted the classification proposed by Oehl et al (2011), including recently described new taxa (i.e. Goto et al 2012 andSieverding et al 2014). After AMF species identification, provide directly from field, we calculated the following ecological index: diversity index (H) proposed by Shannon & Weaver (1949), and dominance index (C) proposed by Simpson (1949) for each studied AMF community.…”

Arbuscular mycorrhizal fungal community assembly in the Brazilian tropical seasonal dry forest

“…Previous studies revealed that Brazil is the diversification and dispersion center of species from the order Gigasporales (Goto et al 2012;Marinho et al 2014). In this study, we observed the same pattern for AMF communities from the NAT soils.…”

“…Species identification was based on the descriptions provided by Schenck and Perez (1987), publications with descriptions of new families and genera (i.e., Oehl et al 2008), and by consulting the international culture collection of arbuscular mycorrhizal fungi database-INVAM (http://invam.caf.wvu.edu). In this work, we followed the classification proposed by Oehl et al (2011), including recently new described taxa (i.e., Goto et al 2012;Redecker et al 2013;Sieverding et al 2014). In addition to species identification, we also assessed spore abundance by counting the total number of spores, spore abundance of each AMF species by recording the number of spores of each AMF species recorded in the samples, and the species occurrence frequency (FOi) of each AMF species.…”

Acaulospora endographis (Glomeromycetes), a new fungus with a complex spore wall

“…Several arbuscular mycorrhizal (AM) fungal species with a generally scutellosporoid spore development have been described from tropical areas (Cuenca & Herrera-Peraza 2008;Silva et al 2008;Oehl et al 2008, Goto et al 2009, 2010, 2012Tchabi et al 2009). In contrast, only a few species with an acaulosporoid development have been described during the last 10 years from the tropics [Ambispora brasiliensis (Goto et al 2008), Acaulospora punctata (Oehl et al 2011a), Ac.…”