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Field evaluation of biocontrol agents against black-foot and Petri diseases of grapevine.

Authors
  • Martínez-Diz, María Del Pilar1, 2
  • Díaz-Losada, Emilia1
  • Andrés-Sodupe, Marcos3
  • Bujanda, Rebeca3
  • Maldonado-González, María Mercedes3
  • Ojeda, Sonia3
  • Yacoub, Amira4
  • Rey, Patrice4
  • Gramaje, David3
  • 1 Estación de Viticultura e Enoloxía de Galicia (AGACAL-EVEGA), Ponte San Clodio s/n 32428-Leiro-Ourense, Spain. , (Spain)
  • 2 Universidade da Coruña, Facultade de Ciencias, Zapateira, 15071, A Coruña, Spain. , (Spain)
  • 3 Instituto de Ciencias de la Vid y del Vino (ICVV), Consejo Superior de Investigaciones Científicas - Universidad de la Rioja - Gobierno de La Rioja, Ctra. LO-20 Salida 13, Finca La Grajera, 26071, Logroño, Spain. , (Spain)
  • 4 INRA, ISVV, UMR1065 SAVE, F-33140, Villenave d'Ornon, France. , (France)
Type
Published Article
Journal
Pest Management Science
Publisher
Wiley (John Wiley & Sons)
Publication Date
Aug 25, 2020
Identifiers
DOI: 10.1002/ps.6064
PMID: 32841479
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Black-foot and Petri diseases are the main fungal diseases associated with young grapevine decline. Two field experiments were established to evaluate the preventive effect of two potential biocontrol agents (BCAs), i.e. Streptomyces sp. E1 + R4 and Pythium oligandrum Po37, and three BCA-commercial products containing Trichoderma atroviride SC1, Trichoderma koningii TK7 and Pseudomonas fluorescens + Bacillus atrophaeus on fungal infection in grafted plants and plant growth parameters. The effectiveness of some BCA in reducing the incidence and severity of both diseases was dependent on the plant part analyzed and the plant age. No single BCA application was able to control both diseases. Streptomyces sp. E1 + R4 were able to reduce significantly the infection of the most prevalent black-foot disease fungi while P. oligandrum Po37 and Trichoderma spp. were able to reduce significantly Phaeomoniella chlamydospora and Phaeoacremonium minimum (Petri disease) infection. BCA treatments had no effect on the shoot weight, and root weight was significantly lower in all BCA treatments with respect to the control. The combination of the disease-suppressive activity of two or more beneficial microbes in a biocontrol preparation is required to prevent infection by black-foot and Petri disease fungi in vineyards. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.

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