Lily (Lilium spp.) LhERF4 negatively affects anthocyanin biosynthesis by suppressing LhMYBSPLATTER transcription
文献类型： 外文期刊
第一作者： Cao, Yu-wei
作者： Cao, Yu-wei;Song, Meng;Bi, Meng-meng;Yang, Pan-pan;He, Guo-ren;Wang, Jing;Yang, Yue;Xu, Lei-feng;Ming, Jun;Cao, Yu-wei;Yang, Yue
作者机构：
关键词： anthocyanin; ethylene; ERF; MYB
期刊名称：PLANT SCIENCE （ 影响因子：5.2； 五年影响因子：5.7 ）
ISSN： 0168-9452
年卷期： 2024 年 342 卷
页码：
收录情况： SCI
摘要： Anthocyanins are among the main pigments involved in the colouration of Asiatic hybrid lily (Lilium spp.). Ethylene, a plant ripening hormone, plays an important role in promoting plant maturation and anthocyanin biosynthesis. However, whether and how ethylene regulates anthocyanin biosynthesis in lily tepals have not been characterized. Using yeast one-hybrid screening, we previously identified an APETALA2 (AP2)/ETHYLENE RESPONSE FACTOR (ERF) named LhERF4 as a potential inhibitor of LhMYBSPLATTER-mediated negative regulation of anthocyanin biosynthesis in lily. Here, transcript and protein analysis of LhERF4, a transcriptional repressor, revealed that LhERF4 directly binds to the promoter of LhMYBSPLATTER. In addition, overexpression of LhERF4 in lily tepals negatively regulates the expression of key structural genes and the total anthocyanin content by suppressing the LhMYBSPLATTER gene. Moreover, the LhERF4 gene inhibits anthocyanin biosynthesis in response to ethylene, affecting anthocyanin accumulation and pigmentation in lily tepals. Collectively, our findings will advance and elucidate a novel regulatory network of anthocyanin biosynthesis in lily, and this research provides new insight into colouration regulation.
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