LhANS-rr1, LhDFR, and LhMYB114 Regulate Anthocyanin Biosynthesis in Flower Buds of Lilium 'Siberia'
文献类型： 外文期刊
作者： Fang, Shaozhong 1 ; Lin, Mi 1 ; Ali, Muhammad Moaaz 2 ; Zheng, Yiping 1 ; Yi, Xiaoyan 2 ; Wang, Shaojuan 2 ; Chen, Faxing 2 ; Lin, Zhimin 1 ;
作者机构： 1.Biotechnol Inst, Fujian Acad Agr Sci, Fuzhou 350003, Peoples R China
2.Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China
关键词： anthocyanin; bulb; Lilium 'Siberia'; full-length transcriptomics; MYB transcription factor; VIGS
期刊名称：GENES （ 影响因子：3.5； 五年影响因子：3.9 ）
ISSN：
年卷期： 2023 年 14 卷 3 期
页码：
收录情况： SCI
摘要： The bulb formation of Lilium is affected by many physiological and biochemical phenomena, including flower bud differentiation, starch and sucrose accumulation, photoperiod, carbon fixation, plant hormone transduction, etc. The transcriptome analysis of flower buds of Lilium hybrid 'Siberia' at different maturity stages showed that floral bud formation is associated with the accumulation of anthocyanins. The results of HPLC-MS showed that cyanidin is the major anthocyanin found in Lilium 'Siberia'. Transcriptome KEGG enrichment analysis and qRT-PCR validation showed that two genes related to flavonoid biosynthesis (LhANS-rr1 and LhDFR) were significantly up-regulated. The functional analysis of differential genes revealed that LhMYB114 was directly related to anthocyanin accumulation among 19 MYB transcription factors. Furthermore, the qRT-PCR results suggested that their expression patterns were very similar at different developmental stages of the lily bulbs. Virus-induced gene silencing (VIGS) revealed that down-regulation of LhANS-rr1, LhDFR, and LhMYB114 could directly lead to a decrease in anthocyanin accumulation, turning the purple phenotype into a white color. Moreover, this is the first report to reveal that LhMYB114 can regulate anthocyanin accumulation at the mature stage of lily bulbs. The accumulation of anthocyanins is an important sign of lily maturity. Therefore, these findings have laid a solid theoretical foundation for further discussion on lily bulb development in the future.
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