The inventory of Fusarium like species from more than 80 year old Buxus trees in the Arboretum of Volčji Potok near Ljubljana enabled re-typification of rarely encountered and badly characterized species currently only known from Buxus sempervirens. One of the species clustered phylogenetically together with species that are known also only from single plant host genera (e.g., Celtis and Staphylea) while host specificity is otherwise observed very rarely in Fusarium like plant pathogens. On Buxus the fungus occurs on the dead buds of clearly decaying twigs although it seems to not kill the trees entirely. The host specific species in this phylogenetic lineage may present research models for understanding plant host defence and co-evolutionary strategies between plants and fungi.
COBISS.SI-ID: 3565416
The genus Cosmospora is revised according to molecular sequence analyses and interpretations based on morphological characters. It is shown that the genus Fusarium is to be segregated into two large groups, of which one accommodates Fusarium sensu stricto among some other plant associated genera. The other group accommodates genera such as Microcera reconsidered distinct from Fusarium. Species of Microcera may have a potential as biocontrol agents against important armoured scale insects on fruit trees. The taxonomic reassessment of these Microcera species from Fusarium sensu stricto, of which the latter accommodates plant pathogens, mycotoxin producers and opportunistic human pathogens, can contribute to their better acceptance as biological control agents by producers and decision makers.
COBISS.SI-ID: 3565160
A phylogenentic overview for Acremonium species is presented. The analysis reveals that the species are polyphyletically scattered in Sarocladium, Emericellopsis, Geosmithia, Bionectria and Gliomastix (all having affinities with the Hypocreales). Outside the Hypocreales, numerous Acremonium-like species fall into the Plectosphaerellaceae or Cephalothecaceae, respectively. Sarocladium is revised. It includes now members of the Acremonium strictum complex, the medically important A. kiliense and the protective maize endophyte A. zeae. The revision sets the groundwork for the study of morphologically little characterized species and for the recognition of their clinical and agricultural relevance.
COBISS.SI-ID: 3565672