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Maize responsiveness to Azospirillum brasilense: Insights into genetic control, heterosis and genomic prediction
Several studies have shown differences in the abilities of maize genotypes to facilitate or impede Azospirillum brasilense colonization and to receive benefits from this association. Hence, our aim was to study the genetic control, heterosis effect and the prediction accuracy of the shoot and root t...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6555527/ https://www.ncbi.nlm.nih.gov/pubmed/31173600 http://dx.doi.org/10.1371/journal.pone.0217571 |
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author | Vidotti, Miriam Suzane Matias, Filipe Inácio Alves, Filipe Couto Pérez-Rodríguez, Paulino Beltran, Gregório Alvarado Burgueño, Juan Crossa, José Fritsche-Neto, Roberto |
author_facet | Vidotti, Miriam Suzane Matias, Filipe Inácio Alves, Filipe Couto Pérez-Rodríguez, Paulino Beltran, Gregório Alvarado Burgueño, Juan Crossa, José Fritsche-Neto, Roberto |
author_sort | Vidotti, Miriam Suzane |
collection | PubMed |
description | Several studies have shown differences in the abilities of maize genotypes to facilitate or impede Azospirillum brasilense colonization and to receive benefits from this association. Hence, our aim was to study the genetic control, heterosis effect and the prediction accuracy of the shoot and root traits of maize in response to A. brasilense. For that, we evaluated 118 hybrids under two contrasting scenarios: i) N stress (control) and ii) N stress plus A. brasilense inoculation. The diallel analyses were performed using mixed model equations, and the genomic prediction models accounted for the general and specific combining ability (GCA and SCA, respectively) and the presence or not of G×E effects. In addition, the genomic models were fitted considering parametric (G-BLUP) and semi-parametric (RKHS) kernels. The genotypes showed significant inoculation effect for five root traits, and the GCA and SCA were significant for both. The GCA in the inoculated treatment presented a greater magnitude than the control, whereas the opposite was observed for SCA. Heterosis was weakly influenced by the inoculation, and the heterozygosity and N status in the plant can have a role in the benefits that can be obtained from this Plant Growth-Promoting Bacteria (PGPB). Prediction accuracies for N stress plus A. brasilense ranged from 0.42 to 0.78, depending on the scenario and trait, and were higher, in most cases, than the non-inoculated treatment. Finally, our findings provide an understanding of the quantitative variation of maize responsiveness to A. brasilense and important insights to be applied in maize breeding aiming the development of superior hybrids for this association. |
format | Online Article Text |
id | pubmed-6555527 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-65555272019-06-17 Maize responsiveness to Azospirillum brasilense: Insights into genetic control, heterosis and genomic prediction Vidotti, Miriam Suzane Matias, Filipe Inácio Alves, Filipe Couto Pérez-Rodríguez, Paulino Beltran, Gregório Alvarado Burgueño, Juan Crossa, José Fritsche-Neto, Roberto PLoS One Research Article Several studies have shown differences in the abilities of maize genotypes to facilitate or impede Azospirillum brasilense colonization and to receive benefits from this association. Hence, our aim was to study the genetic control, heterosis effect and the prediction accuracy of the shoot and root traits of maize in response to A. brasilense. For that, we evaluated 118 hybrids under two contrasting scenarios: i) N stress (control) and ii) N stress plus A. brasilense inoculation. The diallel analyses were performed using mixed model equations, and the genomic prediction models accounted for the general and specific combining ability (GCA and SCA, respectively) and the presence or not of G×E effects. In addition, the genomic models were fitted considering parametric (G-BLUP) and semi-parametric (RKHS) kernels. The genotypes showed significant inoculation effect for five root traits, and the GCA and SCA were significant for both. The GCA in the inoculated treatment presented a greater magnitude than the control, whereas the opposite was observed for SCA. Heterosis was weakly influenced by the inoculation, and the heterozygosity and N status in the plant can have a role in the benefits that can be obtained from this Plant Growth-Promoting Bacteria (PGPB). Prediction accuracies for N stress plus A. brasilense ranged from 0.42 to 0.78, depending on the scenario and trait, and were higher, in most cases, than the non-inoculated treatment. Finally, our findings provide an understanding of the quantitative variation of maize responsiveness to A. brasilense and important insights to be applied in maize breeding aiming the development of superior hybrids for this association. Public Library of Science 2019-06-07 /pmc/articles/PMC6555527/ /pubmed/31173600 http://dx.doi.org/10.1371/journal.pone.0217571 Text en © 2019 Vidotti 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 Vidotti, Miriam Suzane Matias, Filipe Inácio Alves, Filipe Couto Pérez-Rodríguez, Paulino Beltran, Gregório Alvarado Burgueño, Juan Crossa, José Fritsche-Neto, Roberto Maize responsiveness to Azospirillum brasilense: Insights into genetic control, heterosis and genomic prediction |
title | Maize responsiveness to Azospirillum brasilense: Insights into genetic control, heterosis and genomic prediction |
title_full | Maize responsiveness to Azospirillum brasilense: Insights into genetic control, heterosis and genomic prediction |
title_fullStr | Maize responsiveness to Azospirillum brasilense: Insights into genetic control, heterosis and genomic prediction |
title_full_unstemmed | Maize responsiveness to Azospirillum brasilense: Insights into genetic control, heterosis and genomic prediction |
title_short | Maize responsiveness to Azospirillum brasilense: Insights into genetic control, heterosis and genomic prediction |
title_sort | maize responsiveness to azospirillum brasilense: insights into genetic control, heterosis and genomic prediction |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6555527/ https://www.ncbi.nlm.nih.gov/pubmed/31173600 http://dx.doi.org/10.1371/journal.pone.0217571 |
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