The effects of mycorrhizal colonization on phytophagous insects and their natural enemies in soybean fields.

The use of belowground microorganisms in agriculture, with the aim to stimulate plant growth and improve crop yields, has recently gained interest. However, few studies have examined the effects of microorganism inoculation on higher trophic levels in natural conditions. We examined how the diversit...

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Autores principales: Élisée Emmanuel Dabré, Soon-Jae Lee, Mohamed Hijri, Colin Favret
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Publicado: Public Library of Science (PLoS) 2021
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spelling oai:doaj.org-article:fbed1bf9f2cf450885515e7b8b40672c2021-12-02T20:08:06ZThe effects of mycorrhizal colonization on phytophagous insects and their natural enemies in soybean fields.1932-620310.1371/journal.pone.0257712https://doaj.org/article/fbed1bf9f2cf450885515e7b8b40672c2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0257712https://doaj.org/toc/1932-6203The use of belowground microorganisms in agriculture, with the aim to stimulate plant growth and improve crop yields, has recently gained interest. However, few studies have examined the effects of microorganism inoculation on higher trophic levels in natural conditions. We examined how the diversity of phytophagous insects and their natural enemies responded to the field-inoculation of soybean with a model arbuscular mycorrhizal fungus (AMF), Rhizophagus irregularis, combined with a nitrogen-fixing bacterium, Bradyrhizobium japonicum, and a plant growth-promoting bacterium, Bacillus pumilus. We also investigate if the absence or presence of potassium fertilizer can affect this interaction. We found an increase in the abundance of piercing-sucking insects with the triple inoculant irrespective of potassium treatment, whereas there were no differences among treatments for other insect groups. A decrease in the abundance of the soybean aphid, Aphis glycines, with the double inoculant Rhizophagus + Bradyrhizobium was observed in potassium enriched plots and in the abundance of Empoasca spp. with potassium treatment independent of inoculation type. Although it was not possible to discriminate the mycorrhization realized by inoculum from that of the indigenous AMF in the field, we confirmed global negative effects of overall mycorrhizal colonization on the abundance of phytophagous piercing-sucking insects, phytophagous chewing insects, and the alpha diversity of phytophagous insects. In perspective, the use of AMF/Rhizobacteria inoculants in the field should focus on the identity and performance of strains to better understand their impact on insects.Élisée Emmanuel DabréSoon-Jae LeeMohamed HijriColin FavretPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 9, p e0257712 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Élisée Emmanuel Dabré
Soon-Jae Lee
Mohamed Hijri
Colin Favret
The effects of mycorrhizal colonization on phytophagous insects and their natural enemies in soybean fields.
description The use of belowground microorganisms in agriculture, with the aim to stimulate plant growth and improve crop yields, has recently gained interest. However, few studies have examined the effects of microorganism inoculation on higher trophic levels in natural conditions. We examined how the diversity of phytophagous insects and their natural enemies responded to the field-inoculation of soybean with a model arbuscular mycorrhizal fungus (AMF), Rhizophagus irregularis, combined with a nitrogen-fixing bacterium, Bradyrhizobium japonicum, and a plant growth-promoting bacterium, Bacillus pumilus. We also investigate if the absence or presence of potassium fertilizer can affect this interaction. We found an increase in the abundance of piercing-sucking insects with the triple inoculant irrespective of potassium treatment, whereas there were no differences among treatments for other insect groups. A decrease in the abundance of the soybean aphid, Aphis glycines, with the double inoculant Rhizophagus + Bradyrhizobium was observed in potassium enriched plots and in the abundance of Empoasca spp. with potassium treatment independent of inoculation type. Although it was not possible to discriminate the mycorrhization realized by inoculum from that of the indigenous AMF in the field, we confirmed global negative effects of overall mycorrhizal colonization on the abundance of phytophagous piercing-sucking insects, phytophagous chewing insects, and the alpha diversity of phytophagous insects. In perspective, the use of AMF/Rhizobacteria inoculants in the field should focus on the identity and performance of strains to better understand their impact on insects.
format article
author Élisée Emmanuel Dabré
Soon-Jae Lee
Mohamed Hijri
Colin Favret
author_facet Élisée Emmanuel Dabré
Soon-Jae Lee
Mohamed Hijri
Colin Favret
author_sort Élisée Emmanuel Dabré
title The effects of mycorrhizal colonization on phytophagous insects and their natural enemies in soybean fields.
title_short The effects of mycorrhizal colonization on phytophagous insects and their natural enemies in soybean fields.
title_full The effects of mycorrhizal colonization on phytophagous insects and their natural enemies in soybean fields.
title_fullStr The effects of mycorrhizal colonization on phytophagous insects and their natural enemies in soybean fields.
title_full_unstemmed The effects of mycorrhizal colonization on phytophagous insects and their natural enemies in soybean fields.
title_sort effects of mycorrhizal colonization on phytophagous insects and their natural enemies in soybean fields.
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/fbed1bf9f2cf450885515e7b8b40672c
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