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Molecular dissection of heterosis in cereal roots and their rhizosphere
KEY MESSAGE: Heterosis is already manifested early in root development. Consistent with the dominance model of heterosis, gene expression complementation is a general mechanism that contributes to phenotypic heterosis in maize hybrids. ABSTRACT: Highly heterozygous F(1)-hybrids outperform their pare...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10359381/ https://www.ncbi.nlm.nih.gov/pubmed/37474870 http://dx.doi.org/10.1007/s00122-023-04419-6 |
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author | Baldauf, Jutta A. Hochholdinger, Frank |
author_facet | Baldauf, Jutta A. Hochholdinger, Frank |
author_sort | Baldauf, Jutta A. |
collection | PubMed |
description | KEY MESSAGE: Heterosis is already manifested early in root development. Consistent with the dominance model of heterosis, gene expression complementation is a general mechanism that contributes to phenotypic heterosis in maize hybrids. ABSTRACT: Highly heterozygous F(1)-hybrids outperform their parental inbred lines, a phenomenon known as heterosis. Utilization of heterosis is of paramount agricultural importance and has been widely applied to increase yield in many crop cultivars. Plant roots display heterosis for many traits and are an important target for further crop improvement. To explain the molecular basis of heterosis, several genetic hypotheses have been proposed. In recent years, high-throughput gene expression profiling techniques have been applied to investigate hybrid vigor. Consistent with the classical genetic dominance model, gene expression complementation has been demonstrated to be a general mechanism to contribute to phenotypic heterosis in diverse maize hybrids. Functional classification of these genes supported the notion that gene expression complementation can dynamically promote hybrid vigor under fluctuating environmental conditions. Hybrids tend to respond differently to available nutrients in the soil. It was hypothesized that hybrid vigor is promoted through a higher nutrient use efficiency which is linked to an improved root system performance of hybrids in comparison to their inbred parents. Recently, the interaction between soil microbes and their plant host was added as further dimension to disentangle heterosis in the belowground part of plants. Soil microbes influenced the performance of maize hybrids as illustrated in comparisons of sterile soil and soil inhabited by beneficial microorganisms. |
format | Online Article Text |
id | pubmed-10359381 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-103593812023-07-22 Molecular dissection of heterosis in cereal roots and their rhizosphere Baldauf, Jutta A. Hochholdinger, Frank Theor Appl Genet Review KEY MESSAGE: Heterosis is already manifested early in root development. Consistent with the dominance model of heterosis, gene expression complementation is a general mechanism that contributes to phenotypic heterosis in maize hybrids. ABSTRACT: Highly heterozygous F(1)-hybrids outperform their parental inbred lines, a phenomenon known as heterosis. Utilization of heterosis is of paramount agricultural importance and has been widely applied to increase yield in many crop cultivars. Plant roots display heterosis for many traits and are an important target for further crop improvement. To explain the molecular basis of heterosis, several genetic hypotheses have been proposed. In recent years, high-throughput gene expression profiling techniques have been applied to investigate hybrid vigor. Consistent with the classical genetic dominance model, gene expression complementation has been demonstrated to be a general mechanism to contribute to phenotypic heterosis in diverse maize hybrids. Functional classification of these genes supported the notion that gene expression complementation can dynamically promote hybrid vigor under fluctuating environmental conditions. Hybrids tend to respond differently to available nutrients in the soil. It was hypothesized that hybrid vigor is promoted through a higher nutrient use efficiency which is linked to an improved root system performance of hybrids in comparison to their inbred parents. Recently, the interaction between soil microbes and their plant host was added as further dimension to disentangle heterosis in the belowground part of plants. Soil microbes influenced the performance of maize hybrids as illustrated in comparisons of sterile soil and soil inhabited by beneficial microorganisms. Springer Berlin Heidelberg 2023-07-20 2023 /pmc/articles/PMC10359381/ /pubmed/37474870 http://dx.doi.org/10.1007/s00122-023-04419-6 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Review Baldauf, Jutta A. Hochholdinger, Frank Molecular dissection of heterosis in cereal roots and their rhizosphere |
title | Molecular dissection of heterosis in cereal roots and their rhizosphere |
title_full | Molecular dissection of heterosis in cereal roots and their rhizosphere |
title_fullStr | Molecular dissection of heterosis in cereal roots and their rhizosphere |
title_full_unstemmed | Molecular dissection of heterosis in cereal roots and their rhizosphere |
title_short | Molecular dissection of heterosis in cereal roots and their rhizosphere |
title_sort | molecular dissection of heterosis in cereal roots and their rhizosphere |
topic | Review |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10359381/ https://www.ncbi.nlm.nih.gov/pubmed/37474870 http://dx.doi.org/10.1007/s00122-023-04419-6 |
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