Antifeedant, larvicidal and growth inhibitory bioactivities of novel polyketide metabolite isolated from Streptomyces sp. AP-123 against Helicoverpa armigera and Spodoptera litura

BMC Microbiology

Research Article

Sun-Ju Kim¹  Mariadhas Valan Arasu²  Chinnasamy Muthukumar³  Naif Abdullah Al-Dhabi³  Veeramuthu Duraipandiyan³  Valsalam Saritha⁴ 

[1] Department of Bio-Environmental Chemistry, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, 305-764, Daejeon, Republic of Korea;Department of Bio-Environmental Chemistry, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, 305-764, Daejeon, Republic of Korea;Global Research Centre for Biotechnology, Taramani, Chennai, India;Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box 2455, 11451, Riyadh, Saudi Arabia;Global Research Centre for Biotechnology, Taramani, Chennai, India;

关键词: Streptomyces;    Polyketide metabolite;    Antifeedant;    Larvicidal;    Helicoverpa armigera;    Spodoptera litura;   

DOI  :  10.1186/1471-2180-13-105

 received in 2012-11-21, accepted in 2013-04-30,  发布年份 2013

来源: Springer

【 摘 要 】

BackgroundConsiderable attention has been paid to actinomycetes, especially the secondary metabolites obtained from Streptomyces species, as the best alternatives to chemicals as biological control agents for polyphagous pests such as Helicoverpa armigera and Spodoptera litura. On the basis of their novel biocontrol attributes, novel polyketide metabolite isolated from marine Streptomyces sp. AP-123 exhibited significant antifeedant, larvicidal and growth inhibitory activities against polyphagous pests.ResultsLeaf disc no-choice method was used for the insect bioassay. The polyketide metabolite presented significant antifeedant activities against H. armigera (78.51%) and S. litura (70.75%) at 1000 ppm concentration. The metabolite also exhibited high larvicidal activities against H. armigera (63.11%) and S. litura (58.22%) and the LC50 values were 645.25 ppm for H. armigera and 806.54 ppm for S. litura. The metabolite also prolonged the larval–pupal duration of the insects at all the tested concentrations.ConclusionsThe activities of the polyketide metabolite were concentration dependent for both the insects therefore it could be used as an agent to prepare new pesticidal formulations.

【 授权许可】

CC BY   
© Arasu et al.; licensee BioMed Central Ltd. 2013