Metabolic Profiling and Transcriptome Analysis Reveal the Key Role of Flavonoids in Internode Coloration of Phyllostachys violascens cv. Viridisulcata

Bamboo, being an ornamental plant, has myriad aesthetic and economic significance. Particularly, cv. Viridisulcata contains an internode color phenotype in variation in green and yellow color between the sulcus and culm, respectively. This color variation is unique, but the underlying regulatory mec...

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Bibliographic Details
Published in:Frontiers in plant science 2022-01, Vol.12, p.788895-788895
Main Authors: Wei, Han-Tian, Hou, Dan, Ashraf, Muhammad Furqan, Lu, Hai-Wen, Zhuo, Juan, Pei, Jia-Long, Qian, Qi-Xia
Format: Article
Language:English
Subjects:
bamboo
flavonoids
internode coloration
metabolic
Plant Science
transcriptome
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Summary:Bamboo, being an ornamental plant, has myriad aesthetic and economic significance. Particularly, cv. Viridisulcata contains an internode color phenotype in variation in green and yellow color between the sulcus and culm, respectively. This color variation is unique, but the underlying regulatory mechanism is still unknown. In this study, we used metabolomic and transcriptomic strategies to reveal the underlying mechanism of variation in internode color. A total of 81 metabolites were identified, and among those, prunin as a flavanone and rhoifolin as a flavone were discovered at a high level in the culm. We also found 424 differentially expressed genes and investigated three genes ( , , and ) that might be involved in prunin or rhoifolin biosynthesis. Their validation by qRT-PCR confirmed high transcript levels in the culm. The results revealed that , , and might promote the accumulation of prunin and rhoifolin which were responsible for the variation in internode color of . Our study also provides a glimpse into phenotypic coloration and is also a valuable resource for future studies.
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2021.788895