| Exudate from sporulating cultures of Hirsutella thompsonii inhibit oviposition by the two-spotted spider mite Tetranychus urticae. | |
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MedLine Citation:
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PMID: 14635809 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The acaricidal mycopathogen Hirsutella thompsonii has been found to secrete metabolites that are active against female Tetranychus urticae. Specifically, the rose-colored exudate produced on sporulating cultures of Mexican HtM120I strain sterilized female spider mites in a dose-dependent fashion. Topical application of the exudate resulted in a 100% reduction in mite fecundity over the initial six days of experimentation. Depending upon the exudate dosage, mites partially recovered within 3 and 6 d post-treatment and produced a limited number of eggs. The spider mite active HtM120I exudate contained less detectable HtA toxin than the HtM120I broth filtrate, and it was innocuous when injected into the greater wax moth Galleria mellonella L. larvae. Broth filtrates of HtM120I cultures, although toxic to assayed G. mellonella larvae, did not inhibit mite oviposition to the degree or duration of the exudate preparations. These findings suggest that the factor responsible for suppressing oviposition in female spider mites is linked to the sporulation process and is distinct from the well-characterized HtA produced by vegetative cells. |
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Authors:
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José Luis Rosas-Acevedo; Drion G Boucias; Roberto Lezama; Kelly Sims; Alfonso Pescador |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Experimental & applied acarology Volume: 29 ISSN: 0168-8162 ISO Abbreviation: Exp. Appl. Acarol. Publication Date: 2003 |
Date Detail:
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Created Date: 2003-11-25 Completed Date: 2004-01-28 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8507436 Medline TA: Exp Appl Acarol Country: Netherlands |
Other Details:
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Languages: eng Pagination: 213-25 Citation Subset: IM |
Affiliation:
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Centro de Desarrollo Regional, Unidad de Estudios de Posgrado e Investigación de Acapulco, Universidad Autónoma de Guerrero, Apdo. Postal 612, 39301 Acapulco, Gro., Mexico. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cytotoxins / metabolism Exudates and Transudates / metabolism Female Fungal Proteins / metabolism Hypocreales / metabolism* Mite Infestations / prevention & control* Oviposition Pest Control, Biological Spores, Fungal / metabolism Tetranychidae / growth & development, microbiology* |
| Chemical | |
Reg. No./Substance:
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0/Cytotoxins; 0/Fungal Proteins; 0/Hirsutellin A protein, Hirsutella thompsonii |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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