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A Heterochromatic Knob Reducing the Flowering Time in Maize

Maize flowering time is an important agronomic trait, which has been associated with variations in the genome size and heterochromatic knobs content. We integrated three steps to show this association. Firstly, we selected inbred lines varying for heterochromatic knob composition at specific sites i...

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Autores principales: Carvalho, Renata Flávia, Aguiar-Perecin, Margarida Lopes Rodrigues, Clarindo, Wellington Ronildo, Fristche-Neto, Roberto, Mondin, Mateus
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8908004/
https://www.ncbi.nlm.nih.gov/pubmed/35280927
http://dx.doi.org/10.3389/fgene.2021.799681
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author Carvalho, Renata Flávia
Aguiar-Perecin, Margarida Lopes Rodrigues
Clarindo, Wellington Ronildo
Fristche-Neto, Roberto
Mondin, Mateus
author_facet Carvalho, Renata Flávia
Aguiar-Perecin, Margarida Lopes Rodrigues
Clarindo, Wellington Ronildo
Fristche-Neto, Roberto
Mondin, Mateus
author_sort Carvalho, Renata Flávia
collection PubMed
description Maize flowering time is an important agronomic trait, which has been associated with variations in the genome size and heterochromatic knobs content. We integrated three steps to show this association. Firstly, we selected inbred lines varying for heterochromatic knob composition at specific sites in the homozygous state. Then, we produced homozygous and heterozygous hybrids for knobs. Second, we measured the genome size and flowering time for all materials. Knob composition did not affect the genome size and flowering time. Finally, we developed an association study and identified a knob marker on chromosome 9 showing the strongest association with flowering time. Indeed, modelling allele substitution and dominance effects could offer only one heterochromatic knob locus that could affect flowering time, making it earlier rather than the knob composition.
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spelling pubmed-89080042022-03-11 A Heterochromatic Knob Reducing the Flowering Time in Maize Carvalho, Renata Flávia Aguiar-Perecin, Margarida Lopes Rodrigues Clarindo, Wellington Ronildo Fristche-Neto, Roberto Mondin, Mateus Front Genet Genetics Maize flowering time is an important agronomic trait, which has been associated with variations in the genome size and heterochromatic knobs content. We integrated three steps to show this association. Firstly, we selected inbred lines varying for heterochromatic knob composition at specific sites in the homozygous state. Then, we produced homozygous and heterozygous hybrids for knobs. Second, we measured the genome size and flowering time for all materials. Knob composition did not affect the genome size and flowering time. Finally, we developed an association study and identified a knob marker on chromosome 9 showing the strongest association with flowering time. Indeed, modelling allele substitution and dominance effects could offer only one heterochromatic knob locus that could affect flowering time, making it earlier rather than the knob composition. Frontiers Media S.A. 2022-02-24 /pmc/articles/PMC8908004/ /pubmed/35280927 http://dx.doi.org/10.3389/fgene.2021.799681 Text en Copyright © 2022 Carvalho, Aguiar-Perecin, Clarindo, Fristche-Neto and Mondin. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Genetics
Carvalho, Renata Flávia
Aguiar-Perecin, Margarida Lopes Rodrigues
Clarindo, Wellington Ronildo
Fristche-Neto, Roberto
Mondin, Mateus
A Heterochromatic Knob Reducing the Flowering Time in Maize
title A Heterochromatic Knob Reducing the Flowering Time in Maize
title_full A Heterochromatic Knob Reducing the Flowering Time in Maize
title_fullStr A Heterochromatic Knob Reducing the Flowering Time in Maize
title_full_unstemmed A Heterochromatic Knob Reducing the Flowering Time in Maize
title_short A Heterochromatic Knob Reducing the Flowering Time in Maize
title_sort heterochromatic knob reducing the flowering time in maize
topic Genetics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8908004/
https://www.ncbi.nlm.nih.gov/pubmed/35280927
http://dx.doi.org/10.3389/fgene.2021.799681
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