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Effect of vernalization on tuberization and flowering in the Tibetan turnip is associated with changes in the expression of FLC homologues.
Zheng, Yan; Luo, Landi; Liu, Yuanyuan; Yang, Yunqiang; Wang, Chuntao; Kong, Xiangxiang; Yang, Yongping
2018
Source PublicationPlant diversity
ISSN2468-2659
Volume40Issue:2Pages:50-56
AbstractThe turnip (Brassica rapa var. rapa) is a biennial crop that is planted in late summer/early fall and forms fleshy tubers for food in temperate regions. The harvested tubers then overwinter and are planted again the next spring for flowering and seeds. FLOWERING LOCUS C (FLC) is a MADS-box transcription factor that acts as a major repressor of floral transition by suppressing the flowering promoters FT and SOC1. Here we show that vernalization effectively represses tuber formation and promotes flowering in Tibetan turnip. We functionally characterized four FLC homologues (BrrFLC1, FLC2, FLC3, and FLC5), and found that BrrFLC2 and BrrFLC1 play a major role in repressing flowering in turnip and in transgenic Arabidopsis. In contrast, tuber formation was correlated with BrrFLC1 expression in the hypocotyl and was repressed under cold treatment following the quantitative downregulation of BrrFLC1. Grafting experiments of non-vernalized and vernalized turnips revealed that vernalization independently suppressed tuberization in the tuber or hypocotyl of the rootstock or scion, which occurred in parallel with the reduction in BrrFLC1 activity. Together, our results demonstrate that the Tibetan turnip is highly responsive to cold exposure, which is associated with the expression levels of BrrFLC genes.
Language英语
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/64815
Collection中国科学院昆明植物研究所
Recommended Citation
GB/T 7714
Zheng, Yan,Luo, Landi,Liu, Yuanyuan,et al. Effect of vernalization on tuberization and flowering in the Tibetan turnip is associated with changes in the expression of FLC homologues.[J]. Plant diversity,2018,40(2):50-56.
APA Zheng, Yan.,Luo, Landi.,Liu, Yuanyuan.,Yang, Yunqiang.,Wang, Chuntao.,...&Yang, Yongping.(2018).Effect of vernalization on tuberization and flowering in the Tibetan turnip is associated with changes in the expression of FLC homologues..Plant diversity,40(2),50-56.
MLA Zheng, Yan,et al."Effect of vernalization on tuberization and flowering in the Tibetan turnip is associated with changes in the expression of FLC homologues.".Plant diversity 40.2(2018):50-56.
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