Academic Journal
Myco-metabolites as biological control agents against the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae)
| العنوان: | Myco-metabolites as biological control agents against the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) |
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| المؤلفون: | Osman, Mohamed E., Abo Elnasr, Amany A., Nawar, Mohamed A., Hefnawy, Gohyza A. |
| المصدر: | Egyptian Journal of Biological Pest Control ; volume 29, issue 1 ; ISSN 2536-9342 |
| بيانات النشر: | Springer Science and Business Media LLC |
| سنة النشر: | 2019 |
| الوصف: | Fungi are a promising source for bioactive secondary metabolites against various agricultural pests. Soil samples were collected from the rhizosphere of various plants at El-Khatatba, Egypt, in May 2016. Sixty-two fungal isolates were locally isolated and screened against Tetranychus urticae Koch (Acari: Tetranychidae). Four fungal strains, showed potent control activities, were morphologically identified. Laboratory evaluation of the crude extracts of the selected strains, Aspergillus melleus , A. terreus , Emericella nidulans , and Chaetomium globosum , exhibited LC 50 values of 10.27, 33.05, 14.68, and 22.40 mg/ml against females of T. urticae , respectively. Correspondent LC 50 values that exhibited on eggs were 8.81, 23.17, 11.66, and 11.05 mg/ml. Consequently, secondary metabolites of A. melleus were separated by liquid chromatography/mass spectrometry. Compounds separated from the active fraction were identified as mellamide, ochratoxin C, nodulisporic acid, 7-Oxocurvularin, and 6-(4′-hydroxy-2′-methyl phenoxy)-(−)-(3R)-mellein. Obtained secondary metabolites are promising sources for biopesticides to be used in bio-rationale control of T. urticae . |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1186/s41938-019-0166-0 |
| DOI: | 10.1186/s41938-019-0166-0.pdf |
| DOI: | 10.1186/s41938-019-0166-0/fulltext.html |
| الاتاحة: | http://dx.doi.org/10.1186/s41938-019-0166-0 http://link.springer.com/content/pdf/10.1186/s41938-019-0166-0.pdf http://link.springer.com/article/10.1186/s41938-019-0166-0/fulltext.html |
| Rights: | https://creativecommons.org/licenses/by/4.0 ; https://creativecommons.org/licenses/by/4.0 |
| رقم الانضمام: | edsbas.F4D220D4 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1186/s41938-019-0166-0 |
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