Characterization of QTL and Environmental Interactions Controlling Flowering Time in Andean Common Bean (Phaseolus vulgaris L.)
Genetic variation for response of flowering time to photoperiod plays an important role in adaptation to environments with different photoperiods, and as consequence is an important contributor to plant productivity and yield. To elucidate the genetic control of flowering time [days to flowering (DT...
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Frontiers Media S.A.
2021-01-01
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Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2020.599462/full |
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author | Ana M. González Fernando J. Yuste-Lisbona Jim Weller Jacqueline K. Vander Schoor Rafael Lozano Marta Santalla |
author_facet | Ana M. González Fernando J. Yuste-Lisbona Jim Weller Jacqueline K. Vander Schoor Rafael Lozano Marta Santalla |
author_sort | Ana M. González |
collection | DOAJ |
description | Genetic variation for response of flowering time to photoperiod plays an important role in adaptation to environments with different photoperiods, and as consequence is an important contributor to plant productivity and yield. To elucidate the genetic control of flowering time [days to flowering (DTF); growing degree days (GDD)] in common bean, a facultative short-day plant, a quantitative trait loci (QTL) analysis was performed in a recombinant inbred mapping population derived from a cultivated accession and a photoperiod sensitive landrace, grown in different long-day (LD) and short-day (SD) environments by using a multiple-environment QTL model approach. A total of 37 QTL across 17 chromosome regions and 36 QTL-by-QTL interactions were identified for six traits associated with time to flowering and response to photoperiod. The DTF QTL accounted for 28 and 11% on average of the phenotypic variation in the population across LD and SD environments, respectively. Of these, a genomic region on chromosome 4 harboring the major DTF QTL was associated with both flowering time in LD and photoperiod response traits, controlling more than 60% of phenotypic variance, whereas a major QTL on chromosome 9 explained up to 32% of flowering time phenotypic variation in SD. Different epistatic interactions were found in LD and SD environments, and the presence of significant QTL × environment (QE) and epistasis × environment interactions implies that flowering time control may rely on different genes and genetic pathways under inductive and non-inductive conditions. Here, we report the identification of a novel major locus controlling photoperiod sensitivity on chromosome 4, which might interact with other loci for controlling common bean flowering time and photoperiod response. Our results have also demonstrated the importance of these interactions for flowering time control in common bean, and point to the likely complexity of flowering time pathways. This knowledge will help to identify and develop opportunities for adaptation and breeding of this legume crop. |
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spelling | doaj.art-6587fe187980401c8c41e08e747f00502022-12-22T03:14:39ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2021-01-011110.3389/fpls.2020.599462599462Characterization of QTL and Environmental Interactions Controlling Flowering Time in Andean Common Bean (Phaseolus vulgaris L.)Ana M. González0Fernando J. Yuste-Lisbona1Jim Weller2Jacqueline K. Vander Schoor3Rafael Lozano4Marta Santalla5Grupo de Genética del Desarrollo de Plantas, Misión Biológica de Galicia-CSIC, Pontevedra, SpainDepartamento de Biología y Geología (Genética), Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, Almería, SpainSchool of Natural Sciences, University of Tasmania, Hobart, TAS, AustraliaSchool of Natural Sciences, University of Tasmania, Hobart, TAS, AustraliaDepartamento de Biología y Geología (Genética), Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, Almería, SpainGrupo de Genética del Desarrollo de Plantas, Misión Biológica de Galicia-CSIC, Pontevedra, SpainGenetic variation for response of flowering time to photoperiod plays an important role in adaptation to environments with different photoperiods, and as consequence is an important contributor to plant productivity and yield. To elucidate the genetic control of flowering time [days to flowering (DTF); growing degree days (GDD)] in common bean, a facultative short-day plant, a quantitative trait loci (QTL) analysis was performed in a recombinant inbred mapping population derived from a cultivated accession and a photoperiod sensitive landrace, grown in different long-day (LD) and short-day (SD) environments by using a multiple-environment QTL model approach. A total of 37 QTL across 17 chromosome regions and 36 QTL-by-QTL interactions were identified for six traits associated with time to flowering and response to photoperiod. The DTF QTL accounted for 28 and 11% on average of the phenotypic variation in the population across LD and SD environments, respectively. Of these, a genomic region on chromosome 4 harboring the major DTF QTL was associated with both flowering time in LD and photoperiod response traits, controlling more than 60% of phenotypic variance, whereas a major QTL on chromosome 9 explained up to 32% of flowering time phenotypic variation in SD. Different epistatic interactions were found in LD and SD environments, and the presence of significant QTL × environment (QE) and epistasis × environment interactions implies that flowering time control may rely on different genes and genetic pathways under inductive and non-inductive conditions. Here, we report the identification of a novel major locus controlling photoperiod sensitivity on chromosome 4, which might interact with other loci for controlling common bean flowering time and photoperiod response. Our results have also demonstrated the importance of these interactions for flowering time control in common bean, and point to the likely complexity of flowering time pathways. This knowledge will help to identify and develop opportunities for adaptation and breeding of this legume crop.https://www.frontiersin.org/articles/10.3389/fpls.2020.599462/fullcommon beanenvironment interactionepistasisflowering timephotoperiodQTL |
spellingShingle | Ana M. González Fernando J. Yuste-Lisbona Jim Weller Jacqueline K. Vander Schoor Rafael Lozano Marta Santalla Characterization of QTL and Environmental Interactions Controlling Flowering Time in Andean Common Bean (Phaseolus vulgaris L.) Frontiers in Plant Science common bean environment interaction epistasis flowering time photoperiod QTL |
title | Characterization of QTL and Environmental Interactions Controlling Flowering Time in Andean Common Bean (Phaseolus vulgaris L.) |
title_full | Characterization of QTL and Environmental Interactions Controlling Flowering Time in Andean Common Bean (Phaseolus vulgaris L.) |
title_fullStr | Characterization of QTL and Environmental Interactions Controlling Flowering Time in Andean Common Bean (Phaseolus vulgaris L.) |
title_full_unstemmed | Characterization of QTL and Environmental Interactions Controlling Flowering Time in Andean Common Bean (Phaseolus vulgaris L.) |
title_short | Characterization of QTL and Environmental Interactions Controlling Flowering Time in Andean Common Bean (Phaseolus vulgaris L.) |
title_sort | characterization of qtl and environmental interactions controlling flowering time in andean common bean phaseolus vulgaris l |
topic | common bean environment interaction epistasis flowering time photoperiod QTL |
url | https://www.frontiersin.org/articles/10.3389/fpls.2020.599462/full |
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