Botryosphaeria stevensii infection of Pinot Noir grapevines by soil–root transmission

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Contents Vol 35(3)

doi:10.1071/AP06034

Botryosphaeria stevensii infection of Pinot Noir grapevines by soil–root transmission

M. A. Whitelaw-Weckert ^A ^C, V. Sergeeva ^B, M. J. Priest ^A

^A National Wine and Grape Industry Centre, NSW Department of Primary Industries, Charles Sturt University, PO Box 588, Wagga Wagga, NSW 2678, Australia.
^B Centre for Horticulture and Plant Sciences, University of Western Sydney, Locked Bag 1797, Penrith South DC, NSW 1797, Australia.
^C Corresponding author. Email: melanie.weckert@dpi.nsw.gov.au





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Australasian Plant Pathology 35(3) 369–371 http://dx.doi.org/10.1071/AP06034
Submitted: 22 February 2006 Accepted: 14 March 2006 Published online: 16 May 2006

Abstract

Botryosphaeria grapevine die-back is usually caused by infection of wounds in aerial parts of the grapevine. However, this study shows that Botryosphaeria stevensii infection can also be initiated from soilborne inoculum. Six months after soil inoculation with B. stevensii, shoots from two of six potted Pinot Noir vines were found to be infected with the fungus. This is the first report of infection grapevines by B. stevensii through soil–root transmission. Infection from soilborne inoculum has serious implications for vineyard replanting after removal of diseased vines.