Pest-managing activities of plant extracts and anthraquinones from Cassia nigricans from Burkina Faso

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	Pest-managing activities of plant extracts and anthraquinones from Cassia nigricans from Burkina Faso
	Georges, K.
刊名	Bioresource Technology
	2008
卷号	99 期号:6 页码:2037-2045
ISSN号	0960-8524
中文摘要	Insecticidal activity of eight plants collected from Burkina Faso was studied using mosquito (Ochlerotatus triseriatus), Helicoverpa zea and Heliothis virescens larvae and adult white fly (Bemisia tabaci). The n-hexane, ethyl acetate and methanol extracts of Pseudocedrela kotschyi, Strophantus hispidus, Securidaca longepedunculata, Sapium grahamii, Swartzia madagascariensis, Cassia nigricans, Jatropha curcas and Datura innoxia were used in this study. Extracts were tested at 250 mu g/mL concentration. All three extracts of C nigricans, J curcas (skin and seeds) and D. innoxia exhibited 100% mortality on fourth instar mosquito (O. triseriatus) larvae. In addition, the n-hexane and ethyl acetate extracts of S. hispidus, S. longepedunculata, S. grahaniii showed 100% mortality. The ethyl acetate extract of S. madagascariensis was the most active on adult white fly and exhibited 80% mortality. Extracts of all other plants exhibited 30-50% mortality on R tabaci. In the antifeedant assays against H. zea and H. virescens, the MeOH extracts of C nigricans, S. madagascarensis and S. hispidus were more effective against H. zea as indicated by 74% larval weight reduction as compared to the control. Since C nigricans is commonly used in West Africa to protect grain storage from insects, we have characterized the insecticidal components present in its extract. Bioassay directed isolation of C nigricans leaf extract yielded anthraquinones emodin, citreorosein, and emodic acid and a flavonoid, luteolin. Emodin, the most abundant and active anthraquinone in C nigricans showed approximately 85% mortality on mosquito larvae Anopheles gambiaea and adult B. tabaci at 50 and 25 mu g/mL, respectively, in 24 It. These results suggest that the extract of C nigricans has the potential to be used as an organic approach to manage some of the agricultural pests. (c) 2007 Elsevier Ltd. All rights reserved.
公开日期	2015-01-28
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/7247]
专题	西双版纳热带植物园_热带植物资源可持续利用重点实验室特色文献_小桐子相关文献
推荐引用方式 GB/T 7714	Georges, K.. Pest-managing activities of plant extracts and anthraquinones from Cassia nigricans from Burkina Faso[J]. Bioresource Technology,2008,99(6):2037-2045.
APA	Georges, K..(2008).Pest-managing activities of plant extracts and anthraquinones from Cassia nigricans from Burkina Faso.Bioresource Technology,99(6),2037-2045.
MLA	Georges, K.."Pest-managing activities of plant extracts and anthraquinones from Cassia nigricans from Burkina Faso".Bioresource Technology 99.6(2008):2037-2045.