Phytotoxic Terpenoids from Ligularia cymbulifera Roots
Chen, Jia1,2,3; Zheng, Guowei4; Zhang, Yu2; Aisa, Haji A.1; Hao, Xiao-Jiang2
Volume7Pages:Article 2033
AbstractLigularia 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 thallana, 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 mu g/mL) and seed germination (EC50 = 155.13 +/- 0.52 mu g/mL), with an average content in rhizosphere soil of 3.44 mu g/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 Ligulacymirin a Ligulacymirin b Eremophilane Sesquiterpenes Phytotoxic Activity
Indexed BySCI
WOS IDWOS:000412806900001
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Affiliation1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Plant Resources & Chem Arid Zone, Urumqi, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming, Yunnan, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
4.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming, Yunnan, Peoples R China
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GB/T 7714
Chen, Jia,Zheng, Guowei,Zhang, Yu,et al. Phytotoxic Terpenoids from Ligularia cymbulifera Roots[J]. FRONTIERS IN PLANT SCIENCE,2017,7:Article 2033.
APA Chen, Jia,Zheng, Guowei,Zhang, Yu,Aisa, Haji A.,&Hao, Xiao-Jiang.(2017).Phytotoxic Terpenoids from Ligularia cymbulifera Roots.FRONTIERS IN PLANT SCIENCE,7,Article 2033.
MLA Chen, Jia,et al."Phytotoxic Terpenoids from Ligularia cymbulifera Roots".FRONTIERS IN PLANT SCIENCE 7(2017):Article 2033.
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