LlbZIP11 promotes anthocyanin accumulation in raised spots of Lilium leichtlinii by inducing LlMYB19S expression
文献类型： 外文期刊
作者： Wang, Jiawen 1 ; Liu, Xin 1 ; Liang, Rui 3 ; Li, Jing 1 ; Bi, Mengmeng 5 ; Li, Jinwei 1 ; Mu, Ce 2 ; Yang, Yingdong 6 ; Li, Shujie 7 ; Yang, Panpan 1 ; Ming, Jun 1 ; Xu, Leifeng 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Vegetables & Flowers,Minist Agr & Rural Affai, State Key Lab Vegetable Biobreeding, Key Lab Biol & Genet Improvement Flower Crops, Beijing 100081, Peoples R China
2.Qingdao Agr Univ, Coll Landscape Architecture & Forestry, Qingdao 266109, Peoples R China
3.Nanjing Agr Univ, Coll Hort, Nanjing 210095, Peoples R China
4.Zhejiang Agr & Forestry Univ, Coll Hort Sci, Hangzhou 310021, Peoples R China
5.Shenyang Agr Univ, Coll Hort, Shenyang 110866, Peoples R China
6.Liaoning Acad Agr Sci, Flower Res Inst, Shenyang 110161, Peoples R China
7.Gansu Acad Agr Sci, Inst Biotechnol, Lanzhou 730070, Peoples R China
关键词： Lilium leichtlinii; Raised spots; Anthocyanin accumulation
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.5； 五年影响因子：8.7 ）
ISSN： 0141-8130
年卷期： 2025 年 320 卷
页码：
收录情况： SCI
摘要： Lilium leichtlinii is valued for its distinctive floral pattern, characterized by yellow tepals consisting of raised spots. These raised spots result from anthocyanin accumulation in the proliferating parenchymal and epidermal cells. However, molecular mechanisms regulating anthocyanin accumulation in raised spots remain uncharacterized. In this study, through a comparative transcriptome analysis of L. leichtlinii during raised spot formation, we identified LlbZIP11, a bZIP family transcription factor, as a candidate regulator of this process. Gene expression analysis revealed that the expression pattern of LlbZIP11 was similar to those of LlMYB19S, a MYB transcription factor involved in raised spot anthocyanin pigmentation, and anthocyanin biosynthesis genes. Functional validation demonstrated that LlbZIP11 positively regulates tepal spot formation and anthocyanin accumulation by upregulating LlMYB19S and anthocyanin-related genes. Dual-luciferase and yeast one-hybrid assays confirmed that LlbZIP11 binds to the LlMYB19S promoter to activate its transcription. These findings indicate that LlbZIP11 activates LlMYB19S, promoting anthocyanin accumulation in raised spots of L. leichtlinii. This study expands the understanding of anthocyanin regulatory networks in diverse floral pigmentation patterns and provides a foundation for further investigations into the mechanisms underlying raised spot formation in Lilium.
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