Bibliographic citations
Delgado, E., (2023). Efecto protector de hongos micorrícicos arbusculares sobre la pudrición de la raíz causada por Fusarium verticillioides en Plukenetia volubilis L. [Universidad Nacional de San Martín. Fondo Editorial]. http://hdl.handle.net/11458/5173
Delgado, E., Efecto protector de hongos micorrícicos arbusculares sobre la pudrición de la raíz causada por Fusarium verticillioides en Plukenetia volubilis L. []. PE: Universidad Nacional de San Martín. Fondo Editorial; 2023. http://hdl.handle.net/11458/5173
@misc{renati/1053800,
title = "Efecto protector de hongos micorrícicos arbusculares sobre la pudrición de la raíz causada por Fusarium verticillioides en Plukenetia volubilis L.",
author = "Delgado Mera, Elvin",
publisher = "Universidad Nacional de San Martín. Fondo Editorial",
year = "2023"
}
Root rot caused by Fusarium verticillioides is the most serious disease threatening sacha inchi plants. The colonization of arbuscular mycorrhizal fungi (AMF) on roots increases plant tolerance against soil pathogens. In this context, the study aimed to investigate the efficacy of Rhizoglomus dunense and Paraglomus laccatum as a bioprotective agent against Fusarium verticillioides in sacha inchi plants under nursery conditions. For this research, sacha inchi plants were inoculated with 1000 AMF spores/pot at planting and infested with F. verticillioides at a final volume of 1x108 CFU/plant 20 days after planting. A completely randomized design with 4A x 2B factorial arrangement characterized by AMF species and F. verticillioides inoculation was used. Eight treatments and 15 replicates were established. Plant morphological characteristics, fungal root structures, F. verticillioides population density, disease incidence and severity, antioxidant defense systems and oxidative stress levels were evaluated. The results obtained show that AMF exhibited significant increases against F. verticillioides on aerial and root biomass weight, plant height, chlorophyll content, leaf area, number of leaves and regarding the nitrogen (N), phosphorus (P) and potassium (K) content of aerial biomass and a reduction in the number of chlorotic leaves. High root colonization rates (above 50%) and high succinate dehydrogenase (SDH) enzyme activity reduced the population density of F. verticillioides (67.43%). Mycorrhization reduced disease incidence (25%) and severity (65.28%) compared to plants inoculated with only F. verticillioides. Plants inoculated with AMF and infested with F. verticillioides exhibited significant increases in enzymatic (CAT) and non-enzymatic (GSH) antioxidant defense activities relative to control plants, and a decrease in oxidative damage marker (MDA) levels compared to the control (non-mycorrhizal F. verticillioides). The study has shown that Rhizoglomus dunense and Paraglomus laccatum act as repotentiators in plant morphology and as bioprotective agents against F. verticillioides in sacha inchi plants under nursery conditions.
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