Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Acaricidal action of destruxins produced by a marine-derived Beauveria felina on the bovine tick Rhipicephalus (Boophilus) microplus

Full text
Morais-Urano, Raquel P. [1] ; Chagas, Ana C. S. [2] ; Berlinck, Roberto G. S. [1]
Total Authors: 3
[1] Univ Sao Paulo, Inst Quim Sao Carlos, Sao Carlos, SP - Brazil
[2] Empresa Brasileira Pesquisa Agr EMBRAPA, Embrapa Pecuaria Sudeste, Lab Sanidade Anim, Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Experimental Parasitology; v. 132, n. 3, p. 362-366, NOV 2012.
Web of Science Citations: 5

The increasing resistance of Rhipicephalus (Boophilus) microplus tick to commercial insecticides requires alternative methods for the control of this cattle plague. The enthomopathogenic fungus Beauveria feline produces destruxins in culture media, cyclic depsipeptides which display an array of biological activities. The present investigation aimed to evaluate the acaricide action of destruxins isolated from B. felina culture media on R. (B.) microplus engorged females. B. felina was grown in MF medium under 19 different growth conditions. HPLC-PDA analysis of chromatographic fractions obtained from the 19 different growth media extracts indicated the presence of destruxins in all lipophylic fractions. Such fractions were combined and subjected to separation by HPLC. Fractions containing distinct destruxins composition were tested against R. (B.) micro plus. Two fractions, composed of destruxin Ed(1) and pseudodestruxin B and/or pseudodestruxin C (fraction P1) as well as by hydroxyhomodestruxin B and/or destruxin D and/or roseotoxin C (fraction P7), displayed 30% and 28.7% acaricidal efficacy, respectively. This activity profile in such low concentration is adequate to consider destruxins as potential leading compounds to be developed for tick biological control. (C) 2012 Elsevier Inc. All rights reserved. (AU)

FAPESP's process: 10/50190-2 - Investigation of metabolic and biotechnological potential of marine organisms in bioremediation processes and for the production of substances with anti-viral, anti-inflammatory and anti-Leishmania activities (Marine Biodiversity)
Grantee:Roberto Gomes de Souza Berlinck
Support type: BIOTA-FAPESP Program - Thematic Grants