Lost Memories of Winter: Breaking the FLC Silence

Nakamura, Miyuki; Mozgová, Iva; Hennig, Lars

doi:10.1016/j.molp.2017.11.009

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Uptmoor et al [44] developed a phenology model for predicting the flowering period of B. oleracea based on quantitative trait loci (QTL). Multiple researchers have investigated the impact of vernalization on the flowering responses mediated by FLC in various plant species, including A. thaliana [45][46][47][48][49][50][51][52], A. lyrate [53], B. rapa [16] B. napus [35], Sinapis alba [54], Beta vulgaris [55], and Triticum aestivum [56]. Among the many genes that impact flowering, FLC is the primary gene.…”

Section: Discussionmentioning

confidence: 99%

Molecular Evaluation of the Effects of FLC Homologs and Coordinating Regulators on the Flowering Responses to Vernalization in Cabbage (Brassica oleracea var. capitata) Genotypes

Ahn,

Subburaj,

Yan

et al. 2024

Genes

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The flowering loci of cabbage must be understood to boost their productivity. In this study, to clarify the flowering mechanisms of cabbage, we examined the three flowering repressors BoFLC1, 2 and 3, and the flowering regulators BoGI, BoCOOLAIR, and BoVIN3 of early (CAB1), middle (CAB3), and late (CAB5) flowering cabbage genotypes. Analysis of allele-specifically amplified genomic DNA and various sequence alignments demonstrated that maximal insertions and deletions influenced cabbage flowering behavior, notably in CAB3 and CAB5. Phylogenetic studies showed that BoFLC1, 2, and 3 in the CAB1, 3, and 5 genotypes had the highest homologies to other Brassica species, with CAB3 and 5 the most similar. Although CAB3 and CAB5 have comparable genetic patterns, flowering repressors and flowering regulators were investigated individually with and without vernalization to determine their minor flowering differences. The expression investigation revealed that vernalized CAB5 downregulated all BoFLC genes compared to CAB3 and, in contrast, CAB3 exhibited upregulated BoCOOLAIR. We hypothesized that the CAB3 BoFLC locus’ additional insertions may have led to BoCOOLAIR overexpression and BoFLC downregulation. This study sheds light on cabbage genotypes—particularly those of CAB1 and CAB5—and suggests that structural variations in BoFLC2 and 3 bind flowering regulators, such as COOLAIR, which may affect cabbage flowering time.

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