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Characterization of QTL and environmental interactions controlling flowering time in Andean common bean (Phaseolus vulgaris L.)

Citation

Gonzalez, AM and Yuste-Lisbona, FJ and Weller, J and Vander Schoor, JK and Lozano, R and Santalla, M, Characterization of QTL and environmental interactions controlling flowering time in Andean common bean (Phaseolus vulgaris L.), Frontiers in Plant Science, 11 Article 599462. ISSN 1664-462X (2021) [Refereed Article]


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Copyright Statement

Copyright © 2021 González, Yuste-Lisbona, Weller, Vander Schoor, Lozano and Santalla. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License (https://creativecommons.org/licenses/by/4.0/). 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.

DOI: doi:10.3389/fpls.2020.599462

Abstract

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.

Item Details

Item Type:Refereed Article
Keywords:flowering, environmental interactions, photoperiod, genetic control, quantitative trait, phenotypic variation, epistasis, flowering time, photoperiod, QTL, common bean
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the biological sciences
UTAS Author:Weller, J (Associate Professor Jim Weller)
UTAS Author:Vander Schoor, JK (Mrs Jacqueline Vander Schoor)
ID Code:147238
Year Published:2021
Funding Support:Australian Research Council (DP180103116)
Web of Science® Times Cited:6
Deposited By:Plant Science
Deposited On:2021-10-20
Last Modified:2021-12-01
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