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Title

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

AuthorsMartínez-Diz, M. P.; Díaz-Losada, Emilia; Andrés-Sodupe, Marcos; Bujanda, Rebeca; Maldonado-González, María Mercedes CSIC; Ojeda, Sonia; Yacoub, A.; Rey, Patrice; Gramaje, David CSIC ORCID CVN
KeywordsBacillus
Grapevine trunk diseases
Pseudomonas
Pythium
Streptomyces
Trichoderma
Vitis vinifera L.
Issue DateFeb-2021
PublisherJohn Wiley & Sons
CitationPest Management Science (2020)
Abstract[Background] 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), that is 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. [Results] 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. [Conclusions] 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.
Publisher version (URL)http://dx.doi.org/10.1002/ps.6064
URIhttp://hdl.handle.net/10261/223592
DOI10.1002/ps.6064
ISSN1526-498X
E-ISSN1526-4998
Appears in Collections:(ICVV) Artículos

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