Sequence variation in the bolting time regulator BTC1 changes the life cycle regime in sugar beet.

Höft, Nadine, Dally, Nadine, Jung, Christian and Pillen, K. (2018) Sequence variation in the bolting time regulator BTC1 changes the life cycle regime in sugar beet. Open Access Plant Breeding, 137 (3). pp. 412-422. DOI 10.1111/pbr.12579.

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Supplementary data:

Abstract

In beet production, flowering is an undesirable trait which drastically reduces yield. BOLTING TIME CONTROL 1 (BTC1) and BvBBX19 are major floral regulators in beet. Their proteins have been suggested to interact to jointly regulate their downstream targets BvFT1 and BvFT2. Annual and biennial BTC1 haplotypes differ by six non‐synonymous SNPs and a large insertion in the promoter of the biennial btc1 allele. We describe a new BTC1 allele which displays three nucleotide polymorphisms in the coding sequence and an 8‐bp insertion in the promoter region compared to the annual BTC1d allele. The protein lacks a low‐complexity region, which likely alters its suggested ability to bind BvBBX19. Our findings demonstrate that little sequence variation in BTC1 is sufficient to turn an annual into a biennial genotype. Our results shed new light on the evolution of cultivated beets, and the identified btc1l allele offers new possibilities to breed winter beets.

Document Type: Article
Keywords: Beta vulgaris, domestication, flowering time, plant breeding, venalization
Research affiliation: Kiel University > Kiel Marine Science
OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1111/pbr.12579
ISSN: 0179-9541
Projects: Future Ocean
Date Deposited: 01 Aug 2018 09:35
Last Modified: 27 Mar 2019 11:38
URI: http://oceanrep.geomar.de/id/eprint/43888

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