Nematicidal activity against Aphelenchoides besseyi and Ditylenchus destructor of three biflavonoids,isolated from roots of Stellera chamaejasme |
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| Authors: | Hui Jin Haiyan Cui Xiaoyan Yang Lihong Xu Xudong Li Rentao Liu Zhiqiang Yan Xiuzhuang Li Weili Zheng Yuhui Zhao Xiaoxia Song Lihua Zhong Anxiang Su Bo Qin |
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| Affiliation: | 1. CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Key Laboratory for Natural Medicine of Gansu Province, Lanzhou 730000, China;2. School of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China;3. China Institute for Radiation Protection, Taiyuan 030006, China;4. Qilihe District Agricultural Technology Extension Station of Lanzhou, Lanzhou 730000, China;5. State Key Laboratory of Grassland Agro-ecosystem, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China;6. State Key Laboratory of Land Degradation and Ecological Restoration of North-western China, Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in North-western China of Ministry of Education, Yinchuan 750021, China;7. Academy of Sciences, Institute of Biology, Lanzhou, Gansu 730000, PR China;8. Ministry of Agriculture (ICAMA), Institute for the Control of Agrochemicals, Beijing 100125, PR China;9. Key Laboratory of Ecological Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, College of Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China |
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| Abstract: | Aphelenchoides besseyi and Ditylenchus destructor can cause serious problems for a number of important agricultural crops and vegetables. In this study, the ethanol extract of Stellera chamaejasme L. roots showed strong nematicidal activity against Aphelenchoides besseyi and Ditylenchus destructor. By using a bioactivity-driven fractionation, three biflavonoids were isolated from the extract and their structures were identified by mass and nuclear magnetic resonance spectral data. Nematicidal activity bioassays revealed that isoneochamaejasmin A had the strongest nematicidal activity against A. besseyi and D. destructor with LC50 values of 2.32 and 0.18?mM at 72?h, respectively. Chamaejasmenin B displayed weaker nematicidal activity against A. besseyi with an LC50 value of 3.94?mM at 72?h. Neochamaejasmin B induced the lowest mortality against D. destructor with an LC50 values of 15.6?mM at 72?h. These results suggested that the kind and position of substitutions and the relative configuration of 2-H/3-H and 2”-H/3”-H could be considered as important factors responsible for the nematicidal activity of these purified C-3/C-3″ biflavonoids. |
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| Keywords: | Biflavonoids Nematicidal compounds Plant extract |
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