Research progress on flavonoids in Ornamental landscape plants

Geng Xingmin, Chen Jinying, Xu Xiaorong, Wen Zuowei

Journal of Nanjing Forestry University (Natural Sciences Edition) ›› 0

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Journal of Nanjing Forestry University (Natural Sciences Edition) ›› 0 DOI: 10.12302/j.issn.1000-2006.202602008

Research progress on flavonoids in Ornamental landscape plants

  • Geng Xingmin1, Chen Jinying1, Xu Xiaorong2, Wen Zuowei1
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Abstract

Flavonoids are important secondary metabolites in ornamental plants. They contribute to the color formation of flowers, leaves, and fruits. They also play key defensive roles when plants are in adverse environments such as unsuitable light and temperature, drought, and salinity. This article focuses on the two core functions of ornamental plants, which means ornamental value and stress resistance, and systematically reviews the research progress on flavonoids. For ornamental value, namely color formation, the article explains the mechanisms that direct metabolic flux between the anthocyanin and flavonol biosynthetic branches, and it highlights their key roles in the regulation of flower color. For stress resistance, the article summarizes the accumulation patterns of flavonoids and the related regulatory networks under stresses, including low temperature, drought, saline-alkaline stress, UV-B radiation, and pathogen infection. On this basis, the article further reviews targeted strategies for flavonoid metabolic engineering through transcription factor regulation and genetic engineering approaches, including overexpression, RNA interference, and CRISPR/Cas9. Finally, the article discusses molecular breeding strategies for the coordinated improvement of ornamental traits and environmental adaptability, with the aim of providing a theoretical reference for functional germplasm innovation in ornamental plants.

Key words

ornamental plants / flavonoid compounds / pigment formation / stress tolerance / metabolic regulation

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Geng Xingmin, Chen Jinying, Xu Xiaorong, Wen Zuowei. Research progress on flavonoids in Ornamental landscape plants[J]. Journal of Nanjing Forestry University (Natural Sciences Edition). 0 https://doi.org/10.12302/j.issn.1000-2006.202602008

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