In:
MycoKeys, Pensoft Publishers, Vol. 67 ( 2020-06-08), p. 95-124
Abstract:
Mycological investigation of various foods (mainly cowpea, groundnut, maize, rice, sorghum) and agricultural soils from two states in north-central Nigeria (Nasarawa and Niger), was conducted in order to understand the role of filamentous fungi in food contamination and public health. A total of 839 fungal isolates were recovered from 84% of the 250 food and all 30 soil samples. Preliminary identifications were made, based on macro- and micromorphological characters. Representative strains (n = 121) were studied in detail using morphology and DNA sequencing, involving genera/species-specific markers, while extrolite profiles using LC-MS/MS were obtained for a selection of strains. The representative strains grouped in seven genera ( Aspergillus , Fusarium , Macrophomina , Meyerozyma , Neocosmospora , Neotestudina and Phoma ). Amongst the 21 species that were isolated during this study was one novel species belonging to the Fusarium fujikuroi species complex, F. madaense sp. nov. , obtained from groundnut and sorghum in Nasarawa state. The examined strains produced diverse extrolites, including several uncommon compounds: averantinmethylether in A. aflatoxiformans ; aspergillimide in A. flavus ; heptelidic acid in A. austwickii ; desoxypaxillin, kotanin A and paspalitrems (A and B) in A. aflatoxiformans , A. austwickii and A. cerealis ; aurasperon C, dimethylsulochrin, fellutanine A, methylorsellinic acid, nigragillin and pyrophen in A. brunneoviolaceus ; cyclosporins (A, B, C and H) in A. niger ; methylorsellinic acid, pyrophen and secalonic acid in A. piperis ; aspulvinone E, fonsecin, kojic acid, kotanin A, malformin C, pyranonigrin and pyrophen in A. vadensis ; and all compounds in F. madaense sp. nov., Meyerozyma , Neocosmospora and Neotestudina . This study provides snapshot data for prediction of food contamination and fungal biodiversity exploitation.
Type of Medium:
Online Resource
ISSN:
1314-4049
,
1314-4057
DOI:
10.3897/mycokeys.67.52716
DOI:
10.3897/mycokeys.67.52716.figure1
DOI:
10.3897/mycokeys.67.52716.figure2
DOI:
10.3897/mycokeys.67.52716.figure3
DOI:
10.3897/mycokeys.67.52716.figure4
DOI:
10.3897/mycokeys.67.52716.figure5
DOI:
10.3897/mycokeys.67.52716.suppl1
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2020
detail.hit.zdb_id:
2630648-7
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