文献类型： 外文期刊

作者： Liao, Xuezhu ¹ ; Ye, Yuanjun ² ; Zhang, Xiaoni ¹ ; Peng, Dan ¹ ; Hou, Mengmeng ¹ ; Fu, Gaofei ¹ ; Tan, Jianjun ² ; Zhao, Jianli ³ ; Jiang, Rihong ⁴ ; Xu, Yechun ² ; Liu, Jinmei ² ; Yang, Jinliang ⁵ ; Liu, Wusheng ⁶ ; Tembrock, Luke R. ⁷ ; Zhu, Genfa ² ; Wu, Zhiqiang ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Minist Agr & Rural Affairs, Guangdong Lab Lingnan Modern Agr, Shenzhen Branch,Genome Anal Lab,Agr Genom Inst Sh, Shenzhen 518120, Peoples R China

2.Guangdong Acad Agr Sci, Environm Hort Res Inst, Guangdong Prov Key Lab Ornamental Plant Germplasm, Guangzhou 510640, Peoples R China

3.Yunnan Univ, Yunnan Key Lab Plant Reprod Adaptat & Evolutionar, Kunming 650504, Yunnan, Peoples R China

4.Guangxi Forestry Res Inst, Guangxi Engn & Technol Res Ctr Woody Spices, Guangxi Key Lab Cultivat & Utilizat Special Nonti, Nanning 530002, Peoples R China

5.Univ Nebraska, Dept Agron & Hort, Lincoln, NE 68583 USA

6.North Carolina State Univ, Dept Hort Sci, Raleigh, NC 27607 USA

7.Colorado State Univ, Dept Agr Biol, Ft Collins, CO 80523 USA

8.Kunpeng Inst Modern Agr Foshan, Foshan 528200, Peoples R China

关键词： Anthocyanin synthesis; Siam tulip; Floriculture; Zingiberaceae; Genome evolution

期刊名称：ABIOTECH （ 影响因子：3.6； 五年影响因子：3.7 ）

ISSN： 2096-6326

年卷期： 2022 年 3 卷 3 期

页码：

收录情况： SCI

摘要： Compared with most flowers where the showy part comprises specialized leaves (petals) directly subtending the reproductive structures, most Zingiberaceae species produce showy "flowers" through modifications of leaves (bracts) subtending the true flowers throughout an inflorescence. Curcuma alismatifolia, belonging to the Zingiberaceae family, a plant species originating from Southeast Asia, has become increasingly popular in the flower market worldwide because of its varied and esthetically pleasing bracts produced in different cultivars. Here, we present the chromosome-scale genome assembly of C. alismatifolia "Chiang Mai Pink" and explore the underlying mechanisms of bract pigmentation. Comparative genomic analysis revealed C. alismatifolia contains a residual signal of whole-genome duplication. Duplicated genes, including pigment-related genes, exhibit functional and structural differentiation resulting in diverse bract colors among C. alismatifolia cultivars. In addition, we identified the key genes that produce different colored bracts in C. alismatifolia, such as F3 ' 5'H, DFR, ANS and several transcription factors for anthocyanin synthesis, as well as chlH and CAO in the chlorophyll synthesis pathway by conducting transcriptomic analysis, bulked segregant analysis using both DNA and RNA data, and population genomic analysis. This work provides data for understanding the mechanism of bract pigmentation and will accelerate breeding in developing novel cultivars with richly colored bracts in C. alismatifolia and related species. It is also important to understand the variation in the evolution of the Zingiberaceae family.