Carfentrazone-ethyl and glyphosate drift inhibits uredinial formation of Austropuccinia psidii on Eucalyptus grandis leaves

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dc.creatorSamuel Alves dos Santos
dc.creatorLeonardo David Tuffi Santos
dc.creatorFrancisco André Ossamu Tanaka
dc.creatorBruno Francisco Sant'Anna-Santos
dc.creatorFabrício de Ávila Rodrigues
dc.creatorAcelino Couto Alfenas
dc.date.accessioned2023-04-19T20:22:03Z
dc.date.accessioned2025-09-09T00:10:28Z
dc.date.available2023-04-19T20:22:03Z
dc.date.issued2019
dc.identifier.issn1526-4998
dc.identifier.urihttps://hdl.handle.net/1843/52285
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPest Management Science
dc.rightsAcesso Restrito
dc.subjectMicotoxicoses
dc.subjectFungos-da-ferrugem
dc.subjectFotossintese
dc.subjectMicroscopia eletrônica de transmissão
dc.subject.otherFungal infection
dc.subject.otherMyrtle rust
dc.subject.otherPhotosynthesis
dc.subject.otherTransmission electron microscopy
dc.titleCarfentrazone-ethyl and glyphosate drift inhibits uredinial formation of Austropuccinia psidii on Eucalyptus grandis leaves
dc.typeArtigo de periódico
local.citation.epage62
local.citation.spage53
local.citation.volume75
local.description.resumoThe response to infection of Austropuccinia psidii in resistant (CLR-383) and susceptible (CLR-384) Eucalyptus grandis clones, exposed to herbicide drift of carfentrazone-ethyl, glyphosate and a mixture of these two herbicides, was evaluated at microscopic and physiological levels. Plants of the two clones showed symptoms of phytotoxicity caused by herbicide drift. However, net CO2 assimilation rate, height and shoot dry matter were lower in CLR-384 than in CLR-383. At the ultrastructure level, the leaves of both clones exposed to the herbicides showed thylakoid disorganization and accumulation of starch grains in the chloroplasts. Only plants of CLR-384 were infected by A. psidii, but when exposed to herbicide drift, rust severity was lower than in control plants. Six days after inoculation (dai), plants of this clone exposed to the herbicides had smaller uredinia than control plants. At 12 dai, non-herbicide treated plants showed normal uredinia, containing abundant urediniospores. By contrast, plants exposed to the herbicides were less colonized by the fungus, and the uredinia were smaller with reduced production of urediniospores, which were sometimes not even detected. Glyphosate and carfentrazone-ethyl herbicide drift reduce infection and uredinial formation of A. psidii and to some extent induce basal resistance in a susceptible clone of E. grandis.
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.initialsUFMG
local.url.externahttps://onlinelibrary.wiley.com/doi/epdf/10.1002/ps.5163

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