Transcriptional response of Meloidogyne incognita to non-fumigant nematicides

Abstract There is limited research about the impacts of new nematicides, including fluazaindolizine, fluopyram, and fluensulfone, on the plant-parasitic nematode Meloidogyne incognita, despite it being a pervasive agricultural pest. In this study, M. incognita second-stage juveniles were exposed for...

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Main Authors: Catherine L. Wram, Cedar N. Hesse, Inga A. Zasada
Format: Article
Language:English
Published: Nature Portfolio 2022-06-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-022-13815-9
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author Catherine L. Wram
Cedar N. Hesse
Inga A. Zasada
author_facet Catherine L. Wram
Cedar N. Hesse
Inga A. Zasada
author_sort Catherine L. Wram
collection DOAJ
description Abstract There is limited research about the impacts of new nematicides, including fluazaindolizine, fluopyram, and fluensulfone, on the plant-parasitic nematode Meloidogyne incognita, despite it being a pervasive agricultural pest. In this study, M. incognita second-stage juveniles were exposed for 24-h to fluensulfone, fluazaindolizine, fluopyram, and oxamyl and total RNA was extracted and sequenced using next-generation sequencing to determine gene expression. The effects of nematicide exposure on cellular detoxification pathways, common differentially expressed (DE) genes, and fatty acid and retinol-binding genes were examined. Fluopyram and oxamyl had the smallest impacts on the M. incognita transcriptome with 48 and 151 genes that were DE, respectively. These compounds also elicited a weak response in the cellular detoxification pathway and fatty acid and retinol-binding (FAR) genes. Fluensulfone and fluazaindolizine produced robust transcriptional responses with 1208 and 2611 DE genes, respectively. These compounds had strong impacts on cellular detoxification, causing differential regulation of transcription factors and genes in the detox pathway. These compounds strongly down-regulated FAR genes between 52–85%. Having a greater understanding of how these compounds function at a molecular level will help to promote proper stewardship, aid with nematicide discovery, and help to stay a step ahead of nematicide resistance.
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spelling doaj.art-e459bd71a30a4708b68a211cd0516a912022-12-22T00:24:45ZengNature PortfolioScientific Reports2045-23222022-06-0112111210.1038/s41598-022-13815-9Transcriptional response of Meloidogyne incognita to non-fumigant nematicidesCatherine L. Wram0Cedar N. Hesse1Inga A. Zasada2Department of Botany and Plant Pathology, Oregon State UniversityUSDA-ARS Horticultural Crops Research UnitUSDA-ARS Horticultural Crops Research UnitAbstract There is limited research about the impacts of new nematicides, including fluazaindolizine, fluopyram, and fluensulfone, on the plant-parasitic nematode Meloidogyne incognita, despite it being a pervasive agricultural pest. In this study, M. incognita second-stage juveniles were exposed for 24-h to fluensulfone, fluazaindolizine, fluopyram, and oxamyl and total RNA was extracted and sequenced using next-generation sequencing to determine gene expression. The effects of nematicide exposure on cellular detoxification pathways, common differentially expressed (DE) genes, and fatty acid and retinol-binding genes were examined. Fluopyram and oxamyl had the smallest impacts on the M. incognita transcriptome with 48 and 151 genes that were DE, respectively. These compounds also elicited a weak response in the cellular detoxification pathway and fatty acid and retinol-binding (FAR) genes. Fluensulfone and fluazaindolizine produced robust transcriptional responses with 1208 and 2611 DE genes, respectively. These compounds had strong impacts on cellular detoxification, causing differential regulation of transcription factors and genes in the detox pathway. These compounds strongly down-regulated FAR genes between 52–85%. Having a greater understanding of how these compounds function at a molecular level will help to promote proper stewardship, aid with nematicide discovery, and help to stay a step ahead of nematicide resistance.https://doi.org/10.1038/s41598-022-13815-9
spellingShingle Catherine L. Wram
Cedar N. Hesse
Inga A. Zasada
Transcriptional response of Meloidogyne incognita to non-fumigant nematicides
Scientific Reports
title Transcriptional response of Meloidogyne incognita to non-fumigant nematicides
title_full Transcriptional response of Meloidogyne incognita to non-fumigant nematicides
title_fullStr Transcriptional response of Meloidogyne incognita to non-fumigant nematicides
title_full_unstemmed Transcriptional response of Meloidogyne incognita to non-fumigant nematicides
title_short Transcriptional response of Meloidogyne incognita to non-fumigant nematicides
title_sort transcriptional response of meloidogyne incognita to non fumigant nematicides
url https://doi.org/10.1038/s41598-022-13815-9
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