For the first time, we used natural CO2 springs, which create hypoxic soil environments, to determine whether a longterm, directional, abiotic selection pressure could change arbuscular mycorrhizal (AM) fungal community structure. We found significant levels of AM fungal community turnover between soil types and the numerical dominance of two AM fungal phylotypes (taxa) in hypoxic soils. Our results strongly suggest that direct environmental selection acting on AM fungi is a major factor regulating AM fungal communities and their phylogeographic patterns.
COBISS.SI-ID: 6679929
A revision of Fusarium-like species led to a reconsideration of generic concepts in the Fusarium clade of the Nectriaceae. Phylogenetic analyses confirm the existence of a clade that includes genera such as Fusarium sensu stricto (including its Gibberella teleomorphs), Albonectria, Cyanonectria, Haematonectria, the newly described genus Geejayessia, and Nectria albida. In addition, the taxonomic significance of some newly described morphological structures, which we call Samuels' pores, is discussed.
COBISS.SI-ID: 3565416
Comprehensive phylogenetic reassessment of the ascomycete genus Cosmospora (Hypocreales. Nectriaceae) is undertaken using fresh isolates and historical strains, sequences of two protein encoding genes, the second largest subunit of RNA polymerase II (rpb2), and a new phylogenetic marker, the larger subunit of ATP citrate lyase. The result is an extensive revision of taxonomic concepts, typification, and nomenclatural details of many anamorph- and teleomorph-typified genera of the Nectriaceae, most notably Cosmospora and Fusarium.
COBISS.SI-ID: 3565160