Acaulospora spinulifera, a new arbuscular mycorrhizal fungal species from the Brazilian Cerrado and Atlantic Rain forest

作者：de Pontes Juliana Souza; Santos Viviane Monique; Pereira Cicero Donizete; da Silva Gladstone Alves; Maia Leonor Costa; Oehl Fritz^*

来源：Nova Hedwigia, 2017, 105(1-2): 219-229.

DOI：10.1127/nova_hedwigia/2017/0407

• arbuscular mycorrhizal fungi
• biodiversity
• Glomeromycetes
• phylogeny

Acaulospora spinulifera sp. nov. forms spores, which are (74-)84-98(-107) x (73-)77-93(-98) mu m in diameter, yellow brown to brown and ornamented with crowded fine spines formed on the surface of the second, structural, and yellow brown spore wall layer. Phylogenetically, the new species is close to A. baetica, A. cavernata, A. ignota, A. nivalis, A. paulinae, A. punctata and A. sieverdingii, but not to the morphologically more similar species A. spinosissima, A. spinosa or A. tuberculata, that all form larger spores than A. spinulifera. In the A. sieverdingii/paulinae Glade, in which currently species with pitted spore surfaces prevail, A. spinulifera is the second species with projections on the structural spore wall layer, besides A. ignota. The latter has warty to flattened elevations in irregular distances on spore surface, which might disappear with age, while the elongated to pointed spines of A. spinulfera are firm and persistent. The new fungus was found in two Cerrado savannas, an Atlantic rainforest, a Caatinga/Cerrado transition zone, and in a soybean production site within the Cerrado.

• 出版日期2017