Induction of Polyploidy and Metabolic Profiling in the Medicinal Herb Wedelia chinensis

被引:17
作者
Tsai, Yung-Ting [1 ]
Chen, Po-Yen [1 ]
To, Kin-Ying [1 ]
机构
[1] Acad Sinica, Agr Biotechnol Res Ctr, Taipei 115, Taiwan
来源
PLANTS-BASEL | 2021年 / 10卷 / 06期
关键词
colchicine; flow cytometry; induction of ploidy; medicinal plant; metabolic profiling; polyploid plants; UPLC; MS; Wedelia chinensis; ESSENTIAL OIL COMPOSITION; IN-VITRO; ANTIOXIDANT ACTIVITY; PROSTATE-CANCER; ECLIPTA-ALBA; COLCHICINE; GROWTH; WEDELOLACTONE; MANIPULATION; TETRAPLOIDY;
D O I
10.3390/plants10061232
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Wedelia chinensis, which belongs to the Asteraceae family, is a procumbent, perennial herb. It has medicinal anti-inflammatory properties and has been traditionally used as folk medicine in East and South Asia for treating fever, cough and phlegm. In Taiwan, W. chinensis is a common ingredient of herbal tea. Previous studies showed that the plant leaves contain four major bioactive compounds, wedelolactone, demethylwedelolactone, luteolin and apigenin, that have potent antihepatoxic activity, and are thus used as major ingredients in phytopharmaceutical formulations. In this study, we set up optimal conditions for induction of ploidy in W. chinensis. Ploidy can be an effective method of increasing plant biomass and improving medicinal and ornamental characteristics. By using flow cytometry and chicken erythrocyte nuclei as a reference, the DNA content (2C) or genome size of W. chinensis was determined to be 4.80 picograms (pg) in this study for the first time. Subsequently, we developed the successful induction of five triploid and three tetraploid plants by using shoot explants treated with different concentrations (0, 0.25, 0.5, 1, 1.5, 2 g/L) of colchicine. No apparent morphological changes were observed between these polyploid plants and the diploid wild-type (WT) plant, except that larger stomata in leaves were found in all polyploid plants as compared to diploid WT. Ultra-performance liquid chromatography coupled with tandem mass spectrometry was used to quantify the four index compounds (wedelolactone, demethylwedelolactone, luteolin, apigenin) in these polyploid plants, and fluctuating patterns were detected. This is the first report regarding polyploidy in the herbal plant W. chinensis.
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页数:13
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