Glyphosate treatments for weed control affect early stages of root colonization by Tuber melanosporum but not secondary colonization
Author
Gómez‑Molina, Eva
Sánchez, Sergio
Parladé, Javier
Cirujeda, Alicia
Puig‑Pey, Meritxell
Marco, Pedro
Garcia‑Barreda, Sergi
Publication date
2020-10-13ISSN
0940-6360
Abstract
The cultivation of the ectomycorrhizal fungus Tuber melanosporum has considerably spread in recent years throughout the world. During the first years of truffle cultivation, weed control is a key practice to improve the establishment of host trees and the proliferation of the fungus in the soil. Glyphosate is nowadays the most commonly used herbicide in Spanish truffle orchards. We explored the effect of glyphosate on the proliferation of T. melanosporum mycorrhizae, on extraradical mycelium and on the inoculum potential of T. melanosporum spores in greenhouse experiments using Quercus ilex seedlings as host plants. No detrimental effect on the secondary infection of T. melanosporum was found after three sequential glyphosate applications in young seedlings during one vegetative period. Instead, a change in the distribution of fine roots and T. melanosporum mycorrhizae along soil depth was observed. On the other hand, results indicate that high application rates of glyphosate hinder the infectivity of T. melanosporum spore inoculum, without apparent impact on the host performance. Our results suggest that glyphosate has the potential to jeopardise the role of the soil spore bank as inoculum source for the colonisation of new roots, also raising the question of whether glyphosate could hinder the presumed role of spores in sexual mating.
Document Type
Article
Document version
Accepted version
Language
English
Subject (CDU)
632 - Plant damage, injuries. Plant diseases. Pests, organisms injurious to plants. Plant protection
Pages
19
Publisher
Springer
Is part of
Mycorrhiza
Citation
Gómez-Molina, Eva, Sergio Sánchez, Javier Parladé, Alicia Cirujeda, Meritxell Puig-Pey, Pedro Marco, and Sergi Garcia-Barreda. 2020. "Glyphosate Treatments For Weed Control Affect Early Stages Of Root Colonization By Tuber Melanosporum But Not Secondary Colonization". Mycorrhiza 30 (6): 725-733. doi:10.1007/s00572-020-00990-8.
Grant agreement number
MINECO-FEDER/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTI2018-093907-B-C21/ES/Diseño e implementacion de sistemas multiproductivos sostenibles en truficultura y analisis de los servicios ecosistemicos asociados/TUBERSYSTEMS
Program
Protecció Vegetal Sostenible
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2646]
Rights
Copyright © 2020, Springer-Verlag GmbH Germany, part of Springer Nature