Novel R2R3-MYB Transcription Factor LhMYB1 Promotes Anthocyanin Accumulation in Lilium concolor var. pulchellum
文献类型： 外文期刊
作者： Tian, Shengnan 1 ; Ali, Muhammad Moaaz 1 ; Ke, Mingli 1 ; Lu, Yuxian 1 ; Zheng, Yiping 2 ; Cai, Xuanmei 2 ; Fang, Shaozhong 2 ; Wu, Jian 3 ; Lin, Zhimin 2 ; Chen, Faxing 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China
2.Fujian Acad Agr Sci, Biotechnol Inst, Fuzhou 350003, Peoples R China
3.China Agr Univ, Dept Ornamental Hort, Beijing Key Lab Dev & Qual Control Ornamental Crop, Beijing 100107, Peoples R China
关键词： transcription factor; LhMYB1; anthocyanin accumulation; Lilium concolor var. pulchellum
期刊名称：HORTICULTURAE （ 影响因子：3.1； 五年影响因子：3.4 ）
ISSN：
年卷期： 2024 年 10 卷 5 期
页码：
收录情况： SCI
摘要： 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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