Red root rot of Vicia sativa caused by Atractiella rhizophila

Abstract

The causal agent of red root rot disease of common vetch (Vicia sativa) on the far North Coast of New South Wales, Australia, has been identified as Atractiella rhizophila. This basidiomycete infected root tissues directly without specialized appressoria, and developed as a necrotroph in the cortex external to the stele. It has been recorded previously as a non-pathogenic endophyte of Populus spp. and Pinus spp. roots, and a symbiont on Quercus rubra, but this is the first report of A. rhizophila as a plant pathogen.

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Fig. 1

Abbreviations

Difco:

a product name of Becton, Dickinson and Company, 7 Loveton Circle, Sparks, Maryland 21,152, USA

DNA:

deoxyribonucleic acid

GenBank:

USA National Centre for Biotechnology Information Nucleotide Database

ITS:

internal transcribed spacer

LSU:

large sub-unit

M:

molar; mol dm-3

PCR:

polymerase chain reaction

PDA:

half-strength Difco potato dextrose agar; 19.5 g l-1 Difco PDA plus 7.5 g l-1 Difco agar

USA:

United States of America

WA:

15 g l-1 Difco agar

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Acknowledgements

We thank R. L. Dodman and R. J. Vilgalys for commenting on the text, and D. J. Firth and G. P. Kennedy for technical assistance.

Funding

This work was supported by Biosecurity Queensland, a division of the Queensland Government, Department of Agriculture and Fisheries. Some of the work was conducted while the senior author was employed by the New South Wales Government, Department of Agriculture. The research was not externally funded and the authors derived no commercial benefit from any aspect of the work.

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All three authors contributed to the work, and the senior author prepared the first draft.

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Correspondence to Robert N. Allen.

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All authors read and approved the final manuscript.

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There was no involvement of human participants and/or animals in the present study.

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Allen, R.N., Bransgrove, K. & Shivas, R.G. Red root rot of Vicia sativa caused by Atractiella rhizophila. Eur J Plant Pathol 157, 293–297 (2020). https://doi.org/10.1007/s10658-020-01985-z

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Keywords

  • Vetch
  • Disease
  • Aetiology
  • Australia