title: Tuberculina-Thanatophytum/Rhizoctonia crocorum-Helicobasidium: a unique mycoparasitic-phytoparasitic life strategy.
abstract: Tuberculina species are mitosporic parasites of rust fungi. Phylogenetically they belong to the Urediniomycetidae, therefore being closely related to their rust fungal hosts. We reveal by means of molecular analyses, ultrastructural and morphological features, observations in the field, and infection experiments that species of the genus Tuberculina and the violet root rot (Helicobasidium/Rhizoctonia crocorum) are stages of the life-cycle of one holomorph. This opens up new perspectives on parasitic life strategies as the resulting life-cycle is based on interkingdom host jumping between rusts and spermatophytes. In addition, we point at the consequences for any practical application dealing with Helicobasidium as an economically important plant pathogen and Tuberculina as a biological agent in rust control.
authors.affiliation: Universität Tübingen, Botanisches Institut, Lehrstuhl Spezielle Botanik und Myologie, Auf der Morgenstelle 1, D-72076 Tübingen, Germany. matthias.lutz@uni-tuebingen.de
authors.forename: Matthias
authors.initials: M
authors.lastname: Lutz
authors.forename: Robert
authors.initials: R
authors.lastname: Bauer
authors.forename: Dominik
authors.initials: D
authors.lastname: Begerow
authors.forename: Franz
authors.initials: F
authors.lastname: Oberwinkler
mesh_terms: D001487:Basidiomycota / Q000145:classification / Q000235:genetics / Q000254:growth & development* / Q000472:pathogenicity; D006790:Host-Parasite Interactions; D008969:Molecular Sequence Data; D010572:Pest Control, Biological; D010935:Plant Diseases / Q000382:microbiology*; D012232:Rhizoctonia / Q000145:classification / Q000235:genetics / Q000254:growth & development*