Mycobiology.  2005 Jun;33(2):77-83.

Occurrence of Fungal Species and Mycotoxins from Decayed Sugarcane (Saccharrum officinarum) in Egypt

• Abd-Elaah
• Soliman A

Abstract

Seventy-three fungal species belonging to forty-three genera were isolated from 40 samples of Saccharrum officinarum (collected from Naage-Hamadi canal in Qena Governorate, Egypt). Aspergillus, Trichoderma, Mucor and Pythium were the most common genera on the two isolation media. The dominant species of Aspergillus were A. niger, A. flavus, A. ustus, A. terreus and A. wentii. Some species were dominant on 40 g/l sucrose such as Aspergillus niger, A. flavus, Emericella nidulans, Trichoderma viride, Torula herbarum and Mamaria echinoeotryoides, while the dominant species on 10 g/l glucose were Mucor circinelloides, Aspergillus niger, Torula herbarum and Trichoderma viride. Mycotoxins including aflatoxins B1, B2, G1 and G2, zearalenone and diacetoxyscirpenol were detected in the examined samples of Saccharrum officinarum. The mycelial growth of A. flavus, A. niger, Fusarium moniliforme and Torula herbarum decreased with the increase in Dimethoate concentrations, although 25 ppm was less effective than the higher levels of the insecticide (75~200 ppm). Dimethoate stimulated the activity of Go-T in A. niger, F. moniliforme and T. harbarum, while the Go-T activity was inhibited in A. flavus with the Dimethoate treatments.

Keyword

Aquatic and terrestrial fungi; Mycotoxin production; Saccharrum officinarum

MeSH Terms

Aflatoxins
Aspergillus
Aspergillus niger
Cryptococcus
Dimethoate
Egypt*
Emericella
Fusarium
Glucose
Mucor
Mycotoxins*
Niger
Pythium
Saccharum*
Sucrose
Trichoderma
Zearalenone
Aflatoxins
Dimethoate
Glucose
Mycotoxins
Sucrose
Zearalenone