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Search for "ALTERNARIA|helianthi": 2 articles found in Index.

ONDŘEJ M. (1996): Seven little known species of the genus Alternaria.   [Alternaria spp., A. caricina spec, nov., Czech Republic, taxonomy]  Czech Mycology 49(2): 119-127   (published: 13th October, 1996)
  abstract   The occurrence of seven little known Alternaria species (Fungi Imperfecti, Hyphomycetes, Dematiaciace) collected in they ears 1969 to 1994 in the Czech Republic is reported and their morphological characteristics presented. They cover two species described by the author, A. calendulae (Ondřej 1974) and A. thalictrina (Ondřej 1974), a new combination: A. anthyllidis (Baudyš) Ondřej comb. nov. and three hitherto unknown species to the Czech Republic: (A. helianthinficiens Simmons, A. leucanthemi Nelen, and A. infectoria Simmons). A new species A. caricina Ondřej spec, nov., is described from leaves of Carex brizoides L. Additional taxonomical characters (size of conidial scars) are given for each species.

GANNIBAL P.B., KAZARTSEV I.A. (2013): Development of a PCR assay for amplification of mating-type loci of Alternaria spp. and related fungi.   [population genetics, recombination, Ulocladium]  Czech Mycology 65(1): 69-78   (published: 10th June, 2013)
  abstract   A large number of ascomycete anamorphs including Alternaria spp. are considered asexual, but carry structurally conserved genes in a mating-type locus (MAT1) with two alternate idiomorphs, MAT1-1 and MAT1-2. Since the locus has lost its main function in many species, different directions of natural selection acting on the idiomorphs can be observed. Thus identification of mating types can be used in population biology studies. Also analysis of MAT1 locus sequences is needed for evolution and phylogeny reconstruction. Eighteen primers from previous works and this study were assessed for their ability to amplify MAT1 in 25 Alternaria and 7 Ulocladium, Embellisia and Alternariaster species. The most suitable primer pairs for 6 sections of Alternaria and several Ulocladium species were revealed.

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