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Research article - Peer-reviewed, 2012

The Role of a Pseudo-Response Regulator Gene in Life Cycle Adaptation and Domestication of Beet

Pin, Pierre A.; Zhang, Wenying; Vogt, Sebastian H.; Dally, Nadine; Buettner, Bianca; Schulze-Buxloh, Gretel; Jelly, Noemie S.; Chia, Tansy Y. P.; Mutasa-Goettgens, Effie S.; Dohm, Juliane C.; Himmelbauer, Heinz; Weisshaar, Bernd; Kraus, Josef; Gielen, Jan J. L.; Lommel, Murielle; Weyens, Guy; Wahl, Bettina; Schechert, Axel; Nilsson, Ove; Jung, Christian;
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Life cycle adaptation to latitudinal and seasonal variation in photoperiod and temperature is a major determinant of evolutionary success in flowering plants. Whereas the life cycle of the dicotyledonous model species Arabidopsis thaliana is controlled by two epistatic genes, FLOWERING LOCUS C and FRIGIDA [1-3], three unrelated loci (VERNALIZATION 1-3) determine the spring and winter habits of monocotyledonous plants such as temperate cereals [4-6]. In the core eudicot species Beta vulgaris, whose lineage diverged from that leading to Arabidopsis shortly after the monocot-dicot split 140 million years ago [7, 8], the bolting locus B [9] is a master switch distinguishing annuals from biennials. Here, we isolated B and show that the pseudo-response regulator gene BOLTING TIME CONTROL 1 (BvBTC1), through regulation of the FLOWERING LOCUS T genes [10], is absolutely necessary for flowering and mediates the response to both long days and vernalization. Our results suggest that domestication of beets involved the selection of a rare partial loss-of-function BvBTC1 allele that imparts reduced sensitivity to photoperiod that is restored by vernalization, thus conferring bienniality, and illustrate how evolutionary plasticity at a key regulatory point can enable new life cycle strategies.

Published in

Current Biology
2012, volume: 22, number: 12, pages: 1095-1101
Publisher: CELL PRESS

Authors' information

Pin, PA
Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Zhang, Wenying
Kiel University (CAU)
Vogt, Sebastian
Kiel University (CAU)
Dally, Nadine
Kiel University (CAU)
Büttner, Bianca
Kiel University (CAU)
Schulze-Buxloh, Gretel
Kiel University (CAU)
Jelly, Noémie S
Syngenta Seeds AB
Chia, Tansy YP
Rothamsted research
Mutasa-Göttgens, Effie S
Rothamsted research
Dohm, Juliane C
Max Planck Institute for Molecular Genetics
Himmelbauer, Heinz
Pompeu Fabra University
Weisshaar, Bernd
University of Bielefeld
Kraus, Josef
Gielen, Jan JL
Syngenta Seeds SAS
Lommel, Murielle
Weyens, Guy
Wahl, Bettina
Strube Research
Schechert, Axel
Strube Research
Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Jung, Christian
Kiel University (CAU)
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UKÄ Subject classification

Biochemistry and Molecular Biology

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