Evaluation of two nematophagous fungi for the control of false root‑knot nematode Nacobbus aberrans in pepper crops

Nacobbus aberrans is an endophytic parasitic nematode that induces root galls, negatively affecting plant growth and devel- opment, and decreasing the production of economically important crops. Currently, low environmental impact alternatives are being developed for the control of nematodes, such a...

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Autores principales: Bernardo, Valeria Fernanda, González, Matías Alberto, Garita, Sebastián Andrés, López, Roberto Oscar, Arango, María Cecilia, Saparrat, Mario Carlos Nazareno, Ruscitti, Marcela Fabiana
Formato: Articulo
Lenguaje:Inglés
Publicado: 2023
Materias:
Ciencias Agrarias
Biocontrol
Capsicum anuumm L.
Pleurotus ostreatus
Purpureocillium lilacinum
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/163875
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-163875
record_format dspace
spelling I19-R120-10915-1638752024-03-15T20:07:08Z http://sedici.unlp.edu.ar/handle/10915/163875 Evaluation of two nematophagous fungi for the control of false root‑knot nematode Nacobbus aberrans in pepper crops Bernardo, Valeria Fernanda González, Matías Alberto Garita, Sebastián Andrés López, Roberto Oscar Arango, María Cecilia Saparrat, Mario Carlos Nazareno Ruscitti, Marcela Fabiana 2023-08-24 2024-03-15T13:52:00Z en Ciencias Agrarias Biocontrol Capsicum anuumm L. Pleurotus ostreatus Purpureocillium lilacinum Nacobbus aberrans is an endophytic parasitic nematode that induces root galls, negatively affecting plant growth and devel- opment, and decreasing the production of economically important crops. Currently, low environmental impact alternatives are being developed for the control of nematodes, such as biological control agents, to reduce the use of soil disinfectants. Nematophagous fungi are microorganisms that can suppress nematode reproduction due to different mechanisms, such as parasitism of eggs, toxin production and stimulation of plant growth. The aim of this study was to investigate the effect of inoculation with nematophagous fungi on N. aberrans in greenhouse-grown pepper (Capsicum anuumm L.) plants and to analyze the response of the infected plants. Two fungal isolates, Purpureocillium lilacimum and Pleurotus ostreatus were tested. The plants were inoculated with these fungi at the time of transplantation in the presence and absence of N. aberrans. The reproduction factor of the nematode was 23.17; 5.90 and 36.4 for P. lilacinum, P. ostreatus and control, respectively. Both in plants parasitized and not parasitized by nematodes, the fungi increased the content of soluble proteins and photosynthetic pigments. Additionally, a favorable impact on growth parameters was also observed. This beneficial effect was also verified by a lower accumulation of proline and sugars, metabolites used by plants as osmoregulators in stress situations, and a low accumulation of malondialdehyde, a metabolite resulting from oxidative stress. These results show that both fungi are suit- able for use in the biocontrol of N. aberrans and as growth promoters in plants. Instituto de Fisiología Vegetal Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 339-346
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Biocontrol
Capsicum anuumm L.
Pleurotus ostreatus
Purpureocillium lilacinum
spellingShingle Ciencias Agrarias
Biocontrol
Capsicum anuumm L.
Pleurotus ostreatus
Purpureocillium lilacinum
Bernardo, Valeria Fernanda
González, Matías Alberto
Garita, Sebastián Andrés
López, Roberto Oscar
Arango, María Cecilia
Saparrat, Mario Carlos Nazareno
Ruscitti, Marcela Fabiana
Evaluation of two nematophagous fungi for the control of false root‑knot nematode Nacobbus aberrans in pepper crops
topic_facet Ciencias Agrarias
Biocontrol
Capsicum anuumm L.
Pleurotus ostreatus
Purpureocillium lilacinum
description Nacobbus aberrans is an endophytic parasitic nematode that induces root galls, negatively affecting plant growth and devel- opment, and decreasing the production of economically important crops. Currently, low environmental impact alternatives are being developed for the control of nematodes, such as biological control agents, to reduce the use of soil disinfectants. Nematophagous fungi are microorganisms that can suppress nematode reproduction due to different mechanisms, such as parasitism of eggs, toxin production and stimulation of plant growth. The aim of this study was to investigate the effect of inoculation with nematophagous fungi on N. aberrans in greenhouse-grown pepper (Capsicum anuumm L.) plants and to analyze the response of the infected plants. Two fungal isolates, Purpureocillium lilacimum and Pleurotus ostreatus were tested. The plants were inoculated with these fungi at the time of transplantation in the presence and absence of N. aberrans. The reproduction factor of the nematode was 23.17; 5.90 and 36.4 for P. lilacinum, P. ostreatus and control, respectively. Both in plants parasitized and not parasitized by nematodes, the fungi increased the content of soluble proteins and photosynthetic pigments. Additionally, a favorable impact on growth parameters was also observed. This beneficial effect was also verified by a lower accumulation of proline and sugars, metabolites used by plants as osmoregulators in stress situations, and a low accumulation of malondialdehyde, a metabolite resulting from oxidative stress. These results show that both fungi are suit- able for use in the biocontrol of N. aberrans and as growth promoters in plants.
format Articulo
Articulo
author Bernardo, Valeria Fernanda
González, Matías Alberto
Garita, Sebastián Andrés
López, Roberto Oscar
Arango, María Cecilia
Saparrat, Mario Carlos Nazareno
Ruscitti, Marcela Fabiana
author_facet Bernardo, Valeria Fernanda
González, Matías Alberto
Garita, Sebastián Andrés
López, Roberto Oscar
Arango, María Cecilia
Saparrat, Mario Carlos Nazareno
Ruscitti, Marcela Fabiana
author_sort Bernardo, Valeria Fernanda
title Evaluation of two nematophagous fungi for the control of false root‑knot nematode Nacobbus aberrans in pepper crops
title_short Evaluation of two nematophagous fungi for the control of false root‑knot nematode Nacobbus aberrans in pepper crops
title_full Evaluation of two nematophagous fungi for the control of false root‑knot nematode Nacobbus aberrans in pepper crops
title_fullStr Evaluation of two nematophagous fungi for the control of false root‑knot nematode Nacobbus aberrans in pepper crops
title_full_unstemmed Evaluation of two nematophagous fungi for the control of false root‑knot nematode Nacobbus aberrans in pepper crops
title_sort evaluation of two nematophagous fungi for the control of false root‑knot nematode nacobbus aberrans in pepper crops
publishDate 2023
url http://sedici.unlp.edu.ar/handle/10915/163875
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