首页> 外文期刊>Mycologia >Effects of the entomopathogenic fungi Metarhizium robertsii, Metarhizium flavoviride, and Isaria fumosorosea on the lipid composition of Galleria mellonella larvae
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Effects of the entomopathogenic fungi Metarhizium robertsii, Metarhizium flavoviride, and Isaria fumosorosea on the lipid composition of Galleria mellonella larvae

机译:血小杂致疗法真菌罗伯西,石英硫甲醛和Isaria fumosorosea对Galleria mellonella幼虫的脂质组合物的影响

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Galleria mellonella is a pest of the honey bee (Apis mellifera L.) and causes significant losses to the beekeeping industry; therefore, experiments are needed to decode the effects of entomopathogenic fungi on insect physiology. The gas chromatography-mass spectrometry (GC-MS) method was successful for the determination of the organic compounds of Galleria mellonella larvae, noninfected and infected by three fungal species: M. robertsii, M. flavoviride, and I. fumosorosea. A total of 46 compounds were identified in G. mellonella, including fatty acids, other acids, fatty acid methyl esters, monoacylglycerols, amino acids, sterols, and several other organic compounds. The lipids of G. mellonella larvae after M. robertsii, M. flavoviride, and I. fumosorosea exposure contained 40, 35, and 33 organic compounds, respectively. The following organic compounds, present in the noninfected larvae, were absent from the infected larvae: fatty acids C22:0 and C24:0, glutaric acid, urocanic acid, hydroxycinnamic acid, dihydroxycinnamic acid, 10-oxodecanoic acid, glycine, aspartic acid, glutamic acid, lysine, tyrosine, tryptophan, 2-aminobutyric acid, and tyramine. These compounds can be used by fungi as an exogenous source of carbon. The following organic compounds, present in the infected larvae, were absent from the noninfected larvae: fatty acids C10:0, C11:0, C13:0, and C20:0, suberic acid, phenylacetic acid, fatty acid methyl ester (FAME) C16:0, FAME C18:2, FAME C18:1, glycerol 2-monopalmitate, norvaline, proline, sitosterol, and 2-dekanal. These compounds can be synthesized as an insect response to fungal infection.
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