Biological Control of Pierce's Disease in the Vineyard with Strains of Xylella fastidiosa Benign to Grapevine

Plant Disease
Don L Hopkins

Abstract

Naturally occurring strains of Xylella fastidiosa Wells et al. that were weakly virulent or aviru-lent to grapevine were inoculated into the lower internodes of Vitis vinifera L. cv. Carignane plants in the greenhouse and challenge inoculated with pathogenic strains 2 weeks later. Several strains provided some reduction in symptom development. Most effective in preventing or slowing the development of Pierce's disease in the greenhouse tests were a strain from sycamore and two from elderberry. In a 2-year test on 'Himrod' grape in the vineyard, strain Syc86-1 (from sycamore), but not strain PD-1 (from grapevine), was effective in limiting the development of Pierce's disease. In tests on new vineyard plantings of 'Flame Seedless' and 'Cabernet Sauvi-gnon', six strains of X. fastidiosa were evaluated for biological control of the natural progression of Pierce's disease. Only strain EB92-1 (from elderberry) provided good control of the disease in both Flame Seedless and Cabernet Sauvignon. Strain Syc86-1 was ineffective in these vineyard tests. Grape strain PD95-6 did lower disease severity in Flame Seedless when compared with nontreated vines, and grape strain PD91-2 delayed symptoms in Cabernet Sauvignon for 12 to 18 months. Bio...Continue Reading

References

Jan 1, 1997·Annual Review of Phytopathology·L SticherJ P Métraux
Jan 19, 1973·Science·D L Hopkins, H H Mollenhauer

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Citations

Dec 2, 2015·Bulletin of Mathematical Biology·Mark WhiddenLeonardo De La Fuente
Oct 28, 2019·Frontiers in Plant Science·Davide PacificoMichela Zottini
May 21, 2013·Annual Review of Phytopathology·Alexander Purcell
Jun 25, 2015·PloS One·Mayukh DasCarlos F Gonzalez
Sep 28, 2018·Frontiers in Microbiology·Ifigeneia KyrkouLars Hestbjerg Hansen
Dec 13, 2018·Phytopathology·Clelia BaccariSteven Lindow
May 15, 2019·EFSA Journal·UNKNOWN EFSA Panel on Plant Health (EFSA PLH Panel)Stephen Parnell

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