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Fig. 9. | Molecular Horticulture

Fig. 9.

From: Warming-induced changes of broccoli head to cauliflower-like curd in Brassica oleracea are regulated by DNA methylation as revealed by methylome and transcriptome co-profiling

Fig. 9.

A proposed model illustrating molecular and epigenetic mechanism underlying warming-induced floral cessations in broccoli (cv. Green Harmony F1). At 16 °C the broccoli flower will develop through VR, IM, FP to FB to produce normal broccoli head. Warming (28 °C or 22 °C) causes genome DNA hypermethylation, especially in the promoter regions of floral development cessation-associated genes (FCGs), which suppresses the expression of the apex-highly-expressed FCGs’ whose expression is required for the floral development from IM to FP (28 °C) or from FP to FB (22 °C), resulting in the floral cessations at the IM stage (28 °C; cauliflower-like curd) or at the FP stage (22 °C; intermediate curd). The DNA methylation inhibitor 5-azaC will block the DNA hypermethylation and eliminate the warming-induced floral cessations

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Molecular Horticulture

ISSN: 2730-9401

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