Lily (Lilium spp.) LhERF4 negatively affects anthocyanin biosynthesis by suppressing LhMYBSPLATTER transcription

Cao, Yu-wei; Song, Meng; Bi, Meng-meng; Yang, Pan-pan; He, Guo-ren; Wang, Jing; Yang, Yue; Xu, Lei-feng; Ming, Jun

doi:10.1016/j.plantsci.2024.112026

Cited by 3 publications

(1 citation statement)

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“…Two R2R3 MYB genes, MYB19Long and MYB19Short, have been identified in Lilium leichtlinii, orchid lily, and Asian hybrid lily varieties, and the spatiotemporal expression profiles of lilies were found to be closely correlated with the expression of the floral pigmentoside biosynthesis gene in colourless protuberances [25]. In addition, the ethylene response factor LhERF4 binds directly to the promoter of LhMYBSPLATTER and negatively regulates the expression of key structural genes and total anthocyanin content [26]. In our study, we took advantage of the characteristics of Lilium concolor var.…”

Section: Introductionmentioning

confidence: 99%

Novel R2R3-MYB Transcription Factor LhMYB1 Promotes Anthocyanin Accumulation in Lilium concolor var. pulchellum

Tian,

Ali,

et al. 2024

Horticulturae

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Lilium concolor var. pulchellum has a brilliant flower colour, high germination rate, and resistance to cold, drought, and salinity and is an excellent source of lily germplasm. Anthocyanins are important flavonoids commonly found in plants and can make the flowers and fruits of plants more colourful. We first found that 0.2 mg/L 1-naphthaleneacetic acid (NAA) specifically induced the accumulation of anthocyanins, which were mainly cyanidins, in callus tissue culture of Lilium. Transcriptomic results indicated that anthocyanin accumulation was mainly involved in the flavonoid pathway, and an LhMYB1 transcription factor encoding 267 amino acids positively associated with anthocyanin accumulation was cloned from the MYB family. Subcellular localisation in tobacco showed that the gene was located in the nucleus of epidermal cells. Virus-induced gene silencing showed that silencing of the LhMYB1 gene on lily petals resulted in a purple to white colour change and a decrease in anthocyanin deposition, mainly in the upper and lower epidermis of the petals. Therefore, the results of this study will provide some ideas for the molecular breeding of lily flower colour.

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Section: Introductionmentioning

confidence: 99%