Fusarium dactylidis sp. nov., a novel nivalenol toxin-producing species sister to F. pseudograminearum isolated from orchard grass (Dactylis glomerata) in Oregon and New Zealand

Takayuki Aoki, Martha M. Vaughan, Susan P. McCormick, Mark Busman, Todd J. Ward, Amy Kelly, Kerry O'Donnell, Peter R. Johnston, David Michael Geiser

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The B trichothecene toxin-producing clade (B clade) of Fusarium includes the etiological agents of Fusarium head blight, crown rot of wheat and barley and stem and ear rot of maize. B clade isolates also have been recovered from several wild and cultivated grasses, including Dactylis glomerata (orchard grass or cock's foot), one of the world's most important forage grasses. Two isolates from the latter host are formally described here as F. dactylidis. Phenotypically F. dactylidis most closely resembles F. ussurianum from the Russian Far East. Both species produce symmetrical sporodochial conidia that are similar in size and curved toward both ends.However, conidia of F. ussurianum typically end in a narrow apical beak while the apical cell of F. dactylidis is acute. Fusarium dactylidis produced nivalenol mycotoxin in planta as well as low but detectable amounts of the estrogenic mycotoxin zearalenone in vitro. Results of a pathogenicity test revealed that F. dactylidis induced mild head blight on wheat.

Original languageEnglish (US)
Pages (from-to)409-418
Number of pages10
JournalMycologia
Volume107
Issue number2
DOIs
StatePublished - Jan 1 2015

Fingerprint

Fusarium pseudograminearum
Dactylis
nivalenol
Dactylis glomerata
Fusarium
New Zealand
orchard
mycotoxins
toxin
conidia
orchards
toxins
Fungal Spores
Mycotoxins
grass
head blight
Poaceae
grasses
ear rot
crown rot

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Physiology
  • Molecular Biology
  • Genetics
  • Cell Biology

Cite this

Aoki, Takayuki ; Vaughan, Martha M. ; McCormick, Susan P. ; Busman, Mark ; Ward, Todd J. ; Kelly, Amy ; O'Donnell, Kerry ; Johnston, Peter R. ; Geiser, David Michael. / Fusarium dactylidis sp. nov., a novel nivalenol toxin-producing species sister to F. pseudograminearum isolated from orchard grass (Dactylis glomerata) in Oregon and New Zealand. In: Mycologia. 2015 ; Vol. 107, No. 2. pp. 409-418.
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Fusarium dactylidis sp. nov., a novel nivalenol toxin-producing species sister to F. pseudograminearum isolated from orchard grass (Dactylis glomerata) in Oregon and New Zealand. / Aoki, Takayuki; Vaughan, Martha M.; McCormick, Susan P.; Busman, Mark; Ward, Todd J.; Kelly, Amy; O'Donnell, Kerry; Johnston, Peter R.; Geiser, David Michael.

In: Mycologia, Vol. 107, No. 2, 01.01.2015, p. 409-418.

Research output: Contribution to journalArticle

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