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Identification of Insect-Deterrent Metabolites from Acremonium masseei strain CICY026, a Saprophytic Fungus from a Sinkhole in Yucatán
- Source :
- Microorganisms, Volume 7, Issue 12
- Publication Year :
- 2019
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2019.
-
Abstract
- Micromycetes from unexplored sources represent an opportunity to discover novel natural products to control insect pests. With this aim, a strain of Acremonium masseei CICY026 isolated from a tropical sinkhole was identified, cultured on fermented rice, and its ethyl acetate extract (EAE) was evaluated against three serious phytophagous insects (Bemisia tabaci, Myzus persicae, and Rhopalosiphum padi). DNA from A. masseei CICY026 was used to confirm its identity. EAE caused settling inhibition (SI) of M. persicae and R. padi (67.5% and 75.3%, respectively). Bioassay-guided fractionation of the active EAE led to the isolation of a novel metabolite, named hexahydroacremonintriol (1), and of acremonin A glucoside (2). The structures of 1 and 2 were determined using IR, one- and two-dimensional NMR, HRMS, and confirmed by theoretical data. The aphid M. persicae was noticeably sensitive to 1 and 2 (SI: 55.6% and 67.2%, respectively), whereas R. padi was only slightly affected by 1 (SI: 59%). This new knowledge about mycobiota from these special sinkhole ecosystems will inform the development of new biorational pesticides.
- Subjects :
- Microbiology (medical)
Mycobiota
Metabolite
hexahydroacremonintriol
Microbiology
antifeedant activity
03 medical and health sciences
chemistry.chemical_compound
Glucoside
Rhopalosiphum padi
Virology
Botany
Acremonium masseei
030304 developmental biology
0303 health sciences
Aphid
biology
Strain (chemistry)
030306 microbiology
Bemisia tabaci
Pesticide
biology.organism_classification
Myzus persicae
chemistry
acremonin A glucoside
Subjects
Details
- Language :
- English
- ISSN :
- 20762607
- Database :
- OpenAIRE
- Journal :
- Microorganisms
- Accession number :
- edsair.doi.dedup.....54b2949bb1cba7a397bbd8270da168f5
- Full Text :
- https://doi.org/10.3390/microorganisms7120712