Proxipyricularia
Klaubauf, et al., Stud. Mycol. 79: 109. 2014. Fig. 50.
Fig. 50. Proxipyricularia zingiberis (ex-epitype CBS 133594). A–C. Conidiophores and conidia. D. Conidia. Scale bars = 5 μm.
Classification: Sordariomycetes, Sordariomycetidae, Magnaporthales, Pyriculariaceae.
Type species: Proxipyricularia zingiberis (Y. Nisik.) Klaubauf, et al., basionym: Pyricularia zingiberis Y. Nishik. Lectotype designated here: plate 4, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 in Nishikado Y. 1917. Ber. Ohara Inst. Landwirt. Forsch. 1: 222. Epitype and ex-epitype strain designated here: CBS H-23356, CBS 133594.
DNA barcodes (genus): LSU, ITS.
DNA barcodes (species): ITS, act, cal, rpb1. Table 16. Fig. 28.
Table 16. DNA barcodes of accepted Proxipyricularia sp.
| Species | Isolates1 | GenBank accession numbers2 | References | |||
|---|---|---|---|---|---|---|
| ITS | act | cal | rpb1 | |||
| Proxypiricularia zingiberis | CBS 133594ET | AB274434 | AB274446 | KM485246 | KM485091 | Hirata et al., 2007, Klaubauf et al., 2014 |
- 1
-
CBS: Westerdijk Fungal Biodiversity Institute, Utrecht, the Netherlands. ET indicates ex-epitype strain.
- 2
-
ITS: internal transcribed spacers and intervening 5.8S nrDNA; act: partial actin gene; cal: partial calmodulin gene; rpb1: partial RNA polymerase II largest subunit gene.
Conidiophores solitary or in fascicles, subcylindrical, erect, olivaceous to medium brown, smooth, septate. Conidiogenous cells terminal and intercalary, pale brown, with denticulate conidiogenous loci and rhexolytic secession. Conidia solitary, formed sympodially, pyriform to obclavate, narrowed toward apex, rounded at base, 2-septate, subhyaline to pale brown, with a distinct protruding basal hilum, frequently with minute marginal frill (adapted from Klaubauf et al. 2014).
Culture characteristics: Colonies reaching 43–50 mm in 1 wk at 25 °C, without or with moderate aerial mycelium. On CMA surface and reverse transparent. On OA surface salmon to ochreous; reverse pale luteous to luteous. On PDA surface olivaceous to grey olivaceous with margins transparent; reverse olivaceous to grey olivaceous with margins buff.
Optimal media and cultivation conditions: On CMA and