نتایج جستجو برای: rpb2
تعداد نتایج: 348 فیلتر نتایج به سال:
شانکر تنه و شاخه یکی از مهمترین بیماری های درختان میوه هسته دار است که بارزترین علائم آن ایجاد زخم های فرورفته روی شاخه ها همراه با تراوش صمغ می باشد. دو باکتری xanthomonas arboricola pv. pruni و pseudomonas syringae pv. syringae به عنوان عوامل اصلی این بیماری قبلا از مناطقی از ایران گزارش شده اند. به منظور شناسایی و تعیین پراکنش عوامل مولد شانکر از نواحی مرکزی ایران، نمونه های دارای علایم شانک...
Species belonging to Aspergillus section Cervini are characterised by radiate or short columnar, fawn coloured, uniseriate conidial heads. The morphology of the taxa in this section is very similar and isolates assigned to these species are frequently misidentified. In this study, a polyphasic approach was applied using morphological characters, extrolite data, temperature profiles and partial ...
Alternaria from different Allium plants was characterized by multilocus sequence analysis. Based on sequences of the β-tubulin (BT2b), the Alternaria allergen a1 (Alt a1), and the RNA polymerase II second largest subunit (RPB2) genes and phylogenetic data analysis, isolates were divided into two groups. The two groups were identical to representative isolates of A. porri (EGS48-147) and A. vanu...
Cyphellophora and Phialophora (Chaetothyriales, Pezizomycota) comprise species known from skin infections of humans and animals and from a variety of environmental sources. These fungi were studied based on the comparison of cultural and morphological features and phylogenetic analyses of five nuclear loci, i.e., internal transcribed spacer rDNA operon (ITS), large and small subunit nuclear rib...
The genus Lentinus (Polyporaceae, Basidiomycota) is widely documented from tropical and temperate forests and is taxonomically controversial. Here we studied the relationships between Lentinus subg. Lentinus sensu Pegler (i.e. sections Lentinus, Tigrini, Dicholamellatae, Rigidi, Lentodiellum and Pleuroti and polypores that share similar morphological characters). We generated sequences of inter...
Three species of Xenosporium producing ellipsoidal or ovoid conidia were collected from decaying culms Miscanthus floridulus submerged in freshwater streams Alishan area, Chiayi County, Taiwan. formosiforme and X. parvulum are described illustrated as new species. africanum is this paper a record for The phylogenetic relationships related taxa sought by comparing the sequences their internal tr...
Two novel species of Russula (Russulaceae, Russulales), R. coronaspora Y.Song sp. nov.and minor nov. belonging to subgenus crown clade, are described based onboth morphological and phylogenetic evidence. In morphology, is mainlycharacterized by its distinct spores ornamented with sparse, cylindrical isolated spines, whichresemble coronavirus, gelatinized pileipellis pileocystidia mostly septate...
Discovered in Paraguay, Chlorophyllum sapukai is a new species based on morphological characters and multigene molecular phylogenetic analyses (ITS, LSU, RPB2 TEF1 markers). Macroscopically, the characterized by large agaricoid basidiomata, with hemispherical to broad convex pileus, yellowish cream buff surface of pileus covered centrally plate-like squamules. Microscopically, abundant cheilocy...
Following the abolishment of dual nomenclature, Stilbospora is recognised as having priority over Prosthecium. The type species of Stilbospora, S. macrosperma, is the correct name for P. ellipsosporum, the type species of Prosthecium. The closely related genus Stegonsporium is maintained as distinct from Stilbospora based on molecular phylogeny, morphology and host range. Stilbospora longicornu...
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