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1.
J Nematol ; 54(1): 20220015, 2022 Feb.
Article in English | MEDLINE | ID: mdl-35860517

ABSTRACT

A population of a species of dagger nematode (Xiphinema) belonging to the non-americanum group was recovered from the fields of kola nut (Cola sp.) in southern Nigeria. The morphological and morphometric data obtained from this population were consistent with the characteristics of the species Xiphinema ifacolum. In addition, molecular identification based on D2-D3 expansion segments of 28S rRNA and partial mitochondrial COI gene regions confirmed its identity. According to our knowledge, this is the first report of the species from Nigeria, and the second report from Africa, after the original description from Foulaya, Guinea.

2.
Nat Prod Res ; 30(18): 2125-9, 2016 Sep.
Article in English | MEDLINE | ID: mdl-26595108

ABSTRACT

Three antifungal compounds have been isolated for the first time from the peels of Ipomoea batatas Lam. Their structures were established on the basis of 1D and 2D NMR spectra data as well as ESI-MS and IR analysis. Urs-13(18)-ene-3ß-yl acetate was found to possess a weak activity against Sporothrix schenckii and Trichophyton metagrophytes fungi with an MIC value of 50 µg/mL each. Stigmasterol and 3-friedelanol were equally active against T. metagrophytes.


Subject(s)
Antifungal Agents/pharmacology , Ipomoea batatas/chemistry , Plant Tubers/chemistry , Antifungal Agents/chemistry , Magnetic Resonance Spectroscopy , Microbial Sensitivity Tests , Spectrometry, Mass, Electrospray Ionization , Spectrophotometry, Infrared , Sporothrix/drug effects , Trichophyton/drug effects , Triterpenes
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