您好，欢迎访问广西农业科学院 机构知识库！

Spatial and widely targeted metabolomics and anatomical analysis reveal the mechanisms associated with petal bicolor patterning of two Dendrobium species

文献类型： 外文期刊

作者： Ou, Mei-Jing 1 ; Li, Hong-Yan 1 ; Liang, Han 1 ; Deng, Zhen-Hai 3 ; Zhang, Zi-Bin 4 ; Li, Jia-Wei 1 ;

作者机构： 1.Guangxi Univ, Coll Forestry, Guangxi Key Lab Forest Ecol & Conservat, Nanning 530004, Peoples R China

2.Guangxi Univ, Coll Forestry, State Key Lab Conservat & Utilizat Subtrop Agrobio, Nanning 530004, Peoples R China

3.Guangxi Yachang Orchid Natl Nat Reserve Management, Baise 533200, Peoples R China

4.Guangxi Acad Agr Sci, Flower Res Inst, Nanning 530007, Peoples R China

5.Laibin Jinxiu Dayaoshan Forest Ecosyst Observat &, Laibin 545700, Peoples R China

关键词： Alkaloids; Flower coloring; Orchidaceae; Spatial metabolic; Vein density

期刊名称：BRAZILIAN JOURNAL OF BOTANY （ 影响因子：1.6； 五年影响因子：1.5 ）

ISSN： 0100-8404

年卷期： 2024 年 47 卷 2 期

页码：

收录情况： SCI

摘要： Orchid flowers possess high ornamental value owing to their delicate structure and color. The color patterns are a result of unbalanced pigment distribution among the petal segments, with bicolor being the most common and important for pollination. However, little is known about the relationship between petal bicolor patterns and metabolites and vein structure. Here, we focused on Dendrobium nobile Lindl., with pigmentation mainly at the tip of the flower petal, and D. anosmum 'A Touch of Class' Lindl, with pigmentation along the entire petal edge. We combined spatial and widely targeted metabolomics with venation anatomical analysis to identify metabolite and structural differences between the two flower bicolor patterns. In our study, we discovered that the concentration of energy-related substances, such as sugars, did not exhibit significant variance across different color regions of the flower. However, defensive metabolites like alkaloids, phenolic acids, and polyamines were found to be more concentrated in areas with more vibrant pigmentation. Specifically, in D. nobile, a higher accumulation of these metabolites was observed in the vein regions, as identified through spatial metabolic analysis. The study also revealed that different vein types had distinct distribution patterns, yet no significant difference was observed in the density of longitudinal and transverse veins between the two examined species. Notably, D. nobile showed a significantly higher density of open veins in the distal part (pigmented part) of the petal compared to the proximal part. In contrast, D. anosmum 'A Touch of Class' exhibited no significant difference in open vein density between these two regions. Our findings contribute to a deeper understanding of color patterning in orchid flowers and provide a theoretical foundation for the breeding of Dendrobium species.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：广西农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台