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Combining QTL mapping with transcriptome and metabolome profiling reveals a possible role for ABA signaling in resistance against the cabbage whitefly in cabbage
Whiteflies are among the world’s most significant agricultural pests and chemical insecticides are extensively used to reduce crop damage to acceptable levels. However, nearly all insecticides pose a threat to the environment and alternative control methods, such as breeding of crop varieties that a...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6219772/ https://www.ncbi.nlm.nih.gov/pubmed/30399182 http://dx.doi.org/10.1371/journal.pone.0206103 |
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author | Broekgaarden, Colette Pelgrom, Koen T. B. Bucher, Johan van Dam, Nicole M. Grosser, Katharine Pieterse, Corné M. J. van Kaauwen, Martijn Steenhuis, Greet Voorrips, Roeland E. de Vos, Martin Vosman, Ben Worrich, Anja van Wees, Saskia C. M. |
author_facet | Broekgaarden, Colette Pelgrom, Koen T. B. Bucher, Johan van Dam, Nicole M. Grosser, Katharine Pieterse, Corné M. J. van Kaauwen, Martijn Steenhuis, Greet Voorrips, Roeland E. de Vos, Martin Vosman, Ben Worrich, Anja van Wees, Saskia C. M. |
author_sort | Broekgaarden, Colette |
collection | PubMed |
description | Whiteflies are among the world’s most significant agricultural pests and chemical insecticides are extensively used to reduce crop damage to acceptable levels. However, nearly all insecticides pose a threat to the environment and alternative control methods, such as breeding of crop varieties that are inherently insect-resistant, are needed. Previously, a strong source of plant-age dependent resistance to the cabbage whitefly (Aleyrodes proletella) has been identified in the modern white cabbage (Brassica oleracea var. capitata) variety Rivera. However, nothing is known about the molecular mechanisms or the genes involved in this resistance. In the present study, a multidisciplinary approach combining transcriptome and metabolome profiling with genetic mapping was used to identify the molecular players of whitefly resistance in cabbage. Transcriptome profiles of young (susceptible) and older (resistant) Rivera plants were analyzed using RNA sequencing. While many genes involved in general processes were differentially expressed between both ages, several defense-related processes were overrepresented in the transcriptome profile of older plants. Hormone measurements revealed that jasmonic acid (JA) levels decreased upon whitefly infestation at both plant ages. Interestingly, abscisic acid (ABA) levels showed contrasting effects in response to whitefly infestation: ABA levels were reduced in young plants but induced in older plants upon whitefly feeding. Auxin levels were significantly lower in older plants compared with young plants, independent of whitefly presence, while glucosinolate levels were higher. Additionally, whitefly performance was monitored in an F(2) population derived from a cross between Rivera and the susceptible white cabbage variety Christmas Drumhead. Significant QTL intervals were mapped on chromosome 2 and 9 for oviposition rate and whitefly adult survival, respectively. Several genes that were higher expressed in older plants and located in the identified QTL intervals were orthologous to Arabidopsis genes that have been related to ABA signaling, suggesting a role for ABA in the regulation of resistance towards whiteflies. Our results show that combining different omics approaches is a useful strategy to identify candidate genes underlying insect resistance. |
format | Online Article Text |
id | pubmed-6219772 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-62197722018-11-19 Combining QTL mapping with transcriptome and metabolome profiling reveals a possible role for ABA signaling in resistance against the cabbage whitefly in cabbage Broekgaarden, Colette Pelgrom, Koen T. B. Bucher, Johan van Dam, Nicole M. Grosser, Katharine Pieterse, Corné M. J. van Kaauwen, Martijn Steenhuis, Greet Voorrips, Roeland E. de Vos, Martin Vosman, Ben Worrich, Anja van Wees, Saskia C. M. PLoS One Research Article Whiteflies are among the world’s most significant agricultural pests and chemical insecticides are extensively used to reduce crop damage to acceptable levels. However, nearly all insecticides pose a threat to the environment and alternative control methods, such as breeding of crop varieties that are inherently insect-resistant, are needed. Previously, a strong source of plant-age dependent resistance to the cabbage whitefly (Aleyrodes proletella) has been identified in the modern white cabbage (Brassica oleracea var. capitata) variety Rivera. However, nothing is known about the molecular mechanisms or the genes involved in this resistance. In the present study, a multidisciplinary approach combining transcriptome and metabolome profiling with genetic mapping was used to identify the molecular players of whitefly resistance in cabbage. Transcriptome profiles of young (susceptible) and older (resistant) Rivera plants were analyzed using RNA sequencing. While many genes involved in general processes were differentially expressed between both ages, several defense-related processes were overrepresented in the transcriptome profile of older plants. Hormone measurements revealed that jasmonic acid (JA) levels decreased upon whitefly infestation at both plant ages. Interestingly, abscisic acid (ABA) levels showed contrasting effects in response to whitefly infestation: ABA levels were reduced in young plants but induced in older plants upon whitefly feeding. Auxin levels were significantly lower in older plants compared with young plants, independent of whitefly presence, while glucosinolate levels were higher. Additionally, whitefly performance was monitored in an F(2) population derived from a cross between Rivera and the susceptible white cabbage variety Christmas Drumhead. Significant QTL intervals were mapped on chromosome 2 and 9 for oviposition rate and whitefly adult survival, respectively. Several genes that were higher expressed in older plants and located in the identified QTL intervals were orthologous to Arabidopsis genes that have been related to ABA signaling, suggesting a role for ABA in the regulation of resistance towards whiteflies. Our results show that combining different omics approaches is a useful strategy to identify candidate genes underlying insect resistance. Public Library of Science 2018-11-06 /pmc/articles/PMC6219772/ /pubmed/30399182 http://dx.doi.org/10.1371/journal.pone.0206103 Text en © 2018 Broekgaarden et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Broekgaarden, Colette Pelgrom, Koen T. B. Bucher, Johan van Dam, Nicole M. Grosser, Katharine Pieterse, Corné M. J. van Kaauwen, Martijn Steenhuis, Greet Voorrips, Roeland E. de Vos, Martin Vosman, Ben Worrich, Anja van Wees, Saskia C. M. Combining QTL mapping with transcriptome and metabolome profiling reveals a possible role for ABA signaling in resistance against the cabbage whitefly in cabbage |
title | Combining QTL mapping with transcriptome and metabolome profiling reveals a possible role for ABA signaling in resistance against the cabbage whitefly in cabbage |
title_full | Combining QTL mapping with transcriptome and metabolome profiling reveals a possible role for ABA signaling in resistance against the cabbage whitefly in cabbage |
title_fullStr | Combining QTL mapping with transcriptome and metabolome profiling reveals a possible role for ABA signaling in resistance against the cabbage whitefly in cabbage |
title_full_unstemmed | Combining QTL mapping with transcriptome and metabolome profiling reveals a possible role for ABA signaling in resistance against the cabbage whitefly in cabbage |
title_short | Combining QTL mapping with transcriptome and metabolome profiling reveals a possible role for ABA signaling in resistance against the cabbage whitefly in cabbage |
title_sort | combining qtl mapping with transcriptome and metabolome profiling reveals a possible role for aba signaling in resistance against the cabbage whitefly in cabbage |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6219772/ https://www.ncbi.nlm.nih.gov/pubmed/30399182 http://dx.doi.org/10.1371/journal.pone.0206103 |
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