Linkage mapping and QTL analysis of flowering time in faba bean
Abstract Flowering time marks the transition from vegetative to reproductive growth and is key for optimal yield in any crop. The molecular mechanisms controlling this trait have been extensively studied in model plants such as Arabidopsis thaliana and rice. While knowledge on the molecular regulati...
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doaj-13078279713d419897e15cb9eb02b1ad2021-07-04T11:29:58ZengNature Publishing GroupScientific Reports2045-23222021-07-0111111110.1038/s41598-021-92680-4Linkage mapping and QTL analysis of flowering time in faba beanDavid Aguilar-Benitez0Inés Casimiro-Soriguer1Fouad Maalouf2Ana M. Torres3Área de Genómica y Biotecnología, IFAPA Centro “Alameda del Obispo”Área de Genómica y Biotecnología, IFAPA Centro “Alameda del Obispo”International Center for Agricultural Research in the Dry Areas (ICARDA)Área de Genómica y Biotecnología, IFAPA Centro “Alameda del Obispo”Abstract Flowering time marks the transition from vegetative to reproductive growth and is key for optimal yield in any crop. The molecular mechanisms controlling this trait have been extensively studied in model plants such as Arabidopsis thaliana and rice. While knowledge on the molecular regulation of this trait is rapidly increasing in sequenced galegoid legume crops, understanding in faba bean remains limited. Here we exploited translational genomics from model legume crops to identify and fine map QTLs linked to flowering time in faba bean. Among the 31 candidate genes relevant for flowering control in A. thaliana and Cicer arietinum assayed, 25 could be mapped in a segregating faba bean RIL population. While most of the genes showed conserved synteny among related legume species, none of them co-localized with the 9 significant QTL regions identified. The FT gene, previously implicated in the control of flowering time in numerous members of the temperate legume clade, mapped close to the most relevant stable and conserved QTL in chromosome V. Interestingly, QTL analysis suggests an important role of epigenetic modifications in faba bean flowering control. The new QTLs and candidate genes assayed here provide a robust framework for further genetic studies and will contribute to the elucidation of the molecular mechanisms controlling this trait.https://doi.org/10.1038/s41598-021-92680-4 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
David Aguilar-Benitez Inés Casimiro-Soriguer Fouad Maalouf Ana M. Torres |
spellingShingle |
David Aguilar-Benitez Inés Casimiro-Soriguer Fouad Maalouf Ana M. Torres Linkage mapping and QTL analysis of flowering time in faba bean Scientific Reports |
author_facet |
David Aguilar-Benitez Inés Casimiro-Soriguer Fouad Maalouf Ana M. Torres |
author_sort |
David Aguilar-Benitez |
title |
Linkage mapping and QTL analysis of flowering time in faba bean |
title_short |
Linkage mapping and QTL analysis of flowering time in faba bean |
title_full |
Linkage mapping and QTL analysis of flowering time in faba bean |
title_fullStr |
Linkage mapping and QTL analysis of flowering time in faba bean |
title_full_unstemmed |
Linkage mapping and QTL analysis of flowering time in faba bean |
title_sort |
linkage mapping and qtl analysis of flowering time in faba bean |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2021-07-01 |
description |
Abstract Flowering time marks the transition from vegetative to reproductive growth and is key for optimal yield in any crop. The molecular mechanisms controlling this trait have been extensively studied in model plants such as Arabidopsis thaliana and rice. While knowledge on the molecular regulation of this trait is rapidly increasing in sequenced galegoid legume crops, understanding in faba bean remains limited. Here we exploited translational genomics from model legume crops to identify and fine map QTLs linked to flowering time in faba bean. Among the 31 candidate genes relevant for flowering control in A. thaliana and Cicer arietinum assayed, 25 could be mapped in a segregating faba bean RIL population. While most of the genes showed conserved synteny among related legume species, none of them co-localized with the 9 significant QTL regions identified. The FT gene, previously implicated in the control of flowering time in numerous members of the temperate legume clade, mapped close to the most relevant stable and conserved QTL in chromosome V. Interestingly, QTL analysis suggests an important role of epigenetic modifications in faba bean flowering control. The new QTLs and candidate genes assayed here provide a robust framework for further genetic studies and will contribute to the elucidation of the molecular mechanisms controlling this trait. |
url |
https://doi.org/10.1038/s41598-021-92680-4 |
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