Drechslera nobleae McKenzie & D. Matthews 1977

Details

Name scientific

Drechslera nobleae McKenzie & D. Matthews, Trans. Brit. Mycol. Soc. 68 309 (1977)

Preferred name

Pyrenophora nobleae (McKenzie & D. Matthews) Rossman & K.D. Hyde 2015

Taxonomy reference

Rossman, Amy Y.; Crous, Pedro W.; Hyde, Kevin D.; Hawksworth, David L.; Aptroot, André; Bezerra, Jose L.; Bhat, Jayarama D.; Boehm, Eric; Braun, Uwe; Boonmee, Saranyaphat; Camporesi, Erio; Chomnunti, Putarak; Dai, Dong-Qin; D'souza, Melvina J.; Dissanayake, Asha; Jones, E.B. Gareth; Groenewald, Johannes Z.; Hernández-Restrepo, Margarita; Hongsanan, Sinang; Jaklitsch, Walter M.; Jayawardena, Ruvishika; Jing, Li Wen; Kirk, Paul M.; Lawrey, James D.; Mapook, Ausana; McKenzie, Eric H.C.; Monkai, Jutamart; Phillips, Alan J.L.; Phookamsak, Rungtiwa; Raja, Huzefa A.; Seifert, Keith A.; Senanayake, Indunil; Slippers, Bernard; Suetrong, Satinee; Tanaka, Kazuaki; Taylor, Joanne E.; Thambugala, Kasun M.; Tian, Qing; Tibpromma, Saowaluck; Wanasinghe, Dhanushka N.; Wijayawardene, Nalin N.; Wikee, Saowanee; Woudenberg, Joyce H.C.; Wu, Hai-Xia; Yan, Jiye; Yang, Tao; Zhang, Ying 2015: Recommended names for pleomorphic genera in Dothideomycetes. IMA Fungus 6(2): 507-523.

Nomenclature

Original authors

McKenzie & D. Matthews

Authors

McKenzie & D. Matthews

Publication place

McKenzie, E.H.C.; Matthews, B.D. 1977: Drechslera nobleae sp.nov. on ryegrass. Transactions of the British Mycological Society 68(2): 309-311.

Year published

1977

Publication page

309

Nomenclatural code

ICN

Basionym

Drechslera nobleae McKenzie & D. Matthews 1977

Type locality

NZ holotype

Taxonomic rank

species

Canonical form

Drechslera nobleae

Typification

New Zealand, on seeds and yellowing leaves of Lolium. PDD 34672 (Isotype IMI 202601)

Classification

Kingdom

Fungi

Phylum

Ascomycota

Class

Dothideomycetes

Order

Pleosporales

Family

Pleosporaceae

Genus

Drechslera

Species

nobleae

Associations

View full associations record

Association type

Associated organism

Association source

has host

Lolium multiflorum Lam.

Alcorn, J.L. (1983)

has host

Lolium (multiflorum × perenne) × perenne

Matthews, B.D. (1971)

has host

Lolium (multiflorum × perenne) × perenne

McKenzie, E.H.C. (1978)

has host

Lolium multiflorum Lam.

McKenzie, E.H.C.; Matthews, B.D. (1977)

has host

Lolium (multiflorum × perenne) × perenne

Pennycook, S.R. (1989)

has host

Lolium multiflorum Lam.

Sivanesan, A. (1987)

Descriptions

McKenzie, E.H.C.; Matthews, B.D. 1977: Drechslera nobleae sp.nov. on ryegrass. Transactions of the British Mycological Society 68(2): 309-311.

Drechslera nobleae McKenzie & D. Matthews 1977

Collections Examined

Paratypes PDD 34673, on seeds of Lolium multiflorum Lam. ‘Grasslands Tama’ Westerwolds N.Z., 1975, E.H.C. McKenzie; PDD 34674 on yellowing leaves of ‘Grasslands Tama’ NZ., 1975, E.H.C. McKenzie.

Description

Hyphae subhyaline to pale brown, smooth, septate, 3-6 µm thick. Conidiophores solitary, erect, straight, septate, geniculate near the apex, mid to dark brown, paler at the apex, up to 45o µm long, 6-11 µm thick, sometimes swollen at the base to 9-23 µm. Conidia solitary, pale straw-coloured, smooth-walled, with maximum thickness at the first septum or at second cell from base, tapering uniformly to the apex, second cell often broader than long, 3-8 (mostly 4-7) pseudosepta, 55-125 µm long, 9-19 (mostly 11-15) µm wide in the broadest part, 6-10 µm at the apex; hilum 3-4 µm wide. The conidia germinate usually by the production of a germ-tube from the second cell, and occasionally also from the apical cell.

Habitat

On seeds and yellowing leaves of Lolium.

Latin

Mycelium ex hyphis subhyalinis vel pallide brunneis, laevibus, septatis, 3-6 µm crassis compositum. Conidiophora solitaria, erecta, recta, septata, apice geniculata, brunnea vel atro-brunnea, apicem versus pallidiora, usque ad 450µm longa, interdum ad basim 9-23 µm, inflata, supra basim 6-11 µm crassa. Conidia solitaria, straminea, laevia, recta, convergentia, maxima srassitudine versus primum septum vel secundum cellulam, cellula secunda saepe latiore quam longa, 3-8 (plerumque 4-7) pseudoseptis, 55-125 µm longa, 9-19 (plerumque 11-15), um lata, apicem versus 6-10 µm; hilo 3-4 µm lato.

Habitat ex seminibus et fohis flavescentibus generis Lolium. Holotypus PDD 34672 (Isotypus IMI 2026o1). Paratypi PDD 34673, PDD 34674. `

Notes

The conidia are similar to those of the Drechslera state of Pyrenophora dictyoides Paul & Parbery and to those of the invalidly published D. andersenii Scharif. The conidiophores are like those of D. siccans (Drechsler) Shoemaker and D. avenacea (Curtis ex Cke) Shoemaker. P. dictyoides and D. siccans are common on ryegrass seed in New Zealand but D. nobleae can be readily distinguished from these species by the shape of the conidia and by their position on the conidiophore. D. nobleae has tapered conidia produced close together at the end of the conidiophore. The conidia of P. dictyoides are tapered, but they are widely spaced on the conidiophore. The conidia of D. siccans are produced near the apex of the conidiophore, but the conidia are cylindrical. D. andersenii also has tapered conidia but the large scars on the conidiophore are widely spaced, whilst D. avenacea has typically almost cylindrical conidia.

Typification

Holotype PDD 34672 (Isotype IMI 2o26o1), on seeds of Lolium (multiflorum x perenne) 'Grasslands Manawa' N.Z., 1975, E.H.C. McKenzie.