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Phytotoxic Terpenoids from Ligularia cymbulifera Roots
Chen, Jia; Zheng, Guowei; Zhang, Yu; Aisa, Haji A; Hao, Xiao-Jiang
Source PublicationFrontiers in plant science

Ligularia cymbulifera is one of the predominant species in the Hengduan Mountains, China, and has led to a decrease in the amount of forage grass in this area. However, little is known about the mechanism behind its predominance. In this study, two novel eremophilane sesquiterpenes, ligulacymirin A and B (1 and 2), together with seven other known terpenoids (3-9), were isolated from the roots of L. cymbulifera. The structures of 1 and 2 were determined by spectroscopic methods and single-crystal X-ray diffraction. Each compound showed phytotoxic activities against Arabidopsis thaliana, and each was detected and identified in rhizosphere soil by UHPLC-MS. Compound 3 was the most potent phytotoxin, showing remarkable inhibition against both seedling growth (EC50 = 30.33 ± 0.94 mug/mL) and seed germination (EC50 = 155.13 ± 0.52 mug/mL), with an average content in rhizosphere soil of 3.44 mug/g. These results indicate that terpenoids in L. cymbulifera roots might be released as phytotoxins in rhizosphere soil to interfere with neighboring plants.

KeywordLigularia Cymbulifera Eremophilane Sesquiterpenes Ligulacymirin a Ligulacymirin b Phytotoxic Activity
Indexed BySCI
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Document Type期刊论文
Affiliation1.The Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of SciencesUrumqi, China
2.State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of SciencesKunming, China
3.Graduate School of Chinese Academy of SciencesBeijing, China
4.Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
Recommended Citation
GB/T 7714
Chen, Jia,Zheng, Guowei,Zhang, Yu,et al. Phytotoxic Terpenoids from Ligularia cymbulifera Roots[J]. Frontiers in plant science,2016,7(1):8-23.
APA Chen, Jia,Zheng, Guowei,Zhang, Yu,Aisa, Haji A,&Hao, Xiao-Jiang.(2016).Phytotoxic Terpenoids from Ligularia cymbulifera Roots.Frontiers in plant science,7(1),8-23.
MLA Chen, Jia,et al."Phytotoxic Terpenoids from Ligularia cymbulifera Roots".Frontiers in plant science 7.1(2016):8-23.
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