Tolerance of dark septate endophytic fungi (DSE) to agrochemicals in vitro

Dark septate endophytes (DSE) are a heterogeneous group of fungi, mostly belonging to the Phylum Ascomycota, that are involved in a mutualistic symbiosis with plant roots. The aim of this study is to evaluate the behavior of two strains of DSE isolated from wheat roots of two cropping areas in the p...

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Bibliographic Details
Published in:Revista argentina de microbiología 2020-01, Vol.52 (1), p.43-49
Main Authors: Spagnoletti, Federico N., Chiocchio, Viviana M.
Format: Article
Language:English
Subjects:
Agrochemicals
Agrochemicals - pharmacology
Agroquímicos
Alternaria - drug effects
Antifungal Agents - pharmacology
Argentina
Ascomycota - drug effects
Benzimidazoles - pharmacology
Carbamates - pharmacology
Dark septate endophytic fungus (DSE)
Drug Resistance, Fungal
Endophytes - drug effects
Fungicides, Industrial - pharmacology
Glycine - analogs & derivatives
Glycine - pharmacology
Glyphosate
Hongos endófitos septados oscuros (DSE)
Insecticides - pharmacology
Plant Roots - microbiology
Pyrethrins - pharmacology
Trigo
Triticum
Wheat
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Summary:Dark septate endophytes (DSE) are a heterogeneous group of fungi, mostly belonging to the Phylum Ascomycota, that are involved in a mutualistic symbiosis with plant roots. The aim of this study is to evaluate the behavior of two strains of DSE isolated from wheat roots of two cropping areas in the province of Buenos Aires, Argentina, against some agrochemicals. Of all the isolates obtained, two strains were identified as Alternaria alternata and Cochliobolus sp. These DSE were found to be tolerant to glyphosate, carbendazim and cypermethrin when evaluated at the recommended agronomic dose (AD), 2 AD and, in some cases, 10 AD. This work contributes to the study of the biology of this group of fungi and their tolerance in the presence of xenobiotics widely used in agriculture. Los endófitos septados oscuros (DSE) son un grupo heterogéneo de hongos que participan de una simbiosis mutualista con raíces de plantas, perteneciendo principalmente al PhylumAscomycota. El objetivo de este estudio fue aislar DSE de raíces de trigo proveniente de dos áreas de cultivo de la provincia de Buenos Aires y evaluar el comportamiento de dos cepas de DSE aisladas de raíces de trigo frente a algunos agroquímicos en dos áreas de cultivo de la provincia de Buenos Aires. De todos los aislamientos obtenidos se seleccionaron dos cepas que se identificaron como Alternaria alternata y Cochliobolus sp. Se encontró que estos DSE son tolerantes al glifosato, el carbendazim y la cipermetrina, evaluados a las dosis agronómicas recomendadas (AD), a 2x AD y, en algunos casos, a 10x AD. Este trabajo contribuye al conocimiento de la biología de este grupo de hongos y su tolerancia a xenobióticos ampliamente utilizados en la agricultura.
ISSN:0325-7541
DOI:10.1016/j.ram.2019.02.003