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Eucalyptus Tree: A Potential Source of Cryptococcus neoformans in Egyptian Environment


Affiliations
1 Department of Microbiology, Cairo University, Giza 1221, Egypt
2 Department of Zoonoses, Cairo University, Giza 12211, Egypt
 

In Egypt, the River Red Gum (Eucalyptus camaldulensis) is a well-known tree and is highly appreciated by the rural and urban dwellers.The role of Eucalyptus trees in the ecology of Cryptococcus neoformans is documented worldwide.The aim of this survey was to show the prevalence of C. neoformans during the flowering season of E. camaldulensis at the Delta region in Egypt.Three hundred and eleven samples out of two hundred Eucalyptus trees, including leaves, flowers, and woody trunks, were collected from four governorates in the Delta region.Thirteen isolates of C. neoformans were recovered from Eucalyptus tree samples (4.2%). Molecular identification of C. neoformans was done by capsular gene specific primer CAP64 and serotype identification was done depending on LAC1 gene. This study represents an update on the ecology of C. neoformans associated with Eucalyptus tree in Egyptian environment.
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  • Eucalyptus Tree: A Potential Source of Cryptococcus neoformans in Egyptian Environment

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Authors

Mahmoud Elhariri
Department of Microbiology, Cairo University, Giza 1221, Egypt
Dalia Hamza
Department of Zoonoses, Cairo University, Giza 12211, Egypt
Rehab Elhelw
Department of Microbiology, Cairo University, Giza 1221, Egypt
Mohamed Refai
Department of Microbiology, Cairo University, Giza 1221, Egypt

Abstract


In Egypt, the River Red Gum (Eucalyptus camaldulensis) is a well-known tree and is highly appreciated by the rural and urban dwellers.The role of Eucalyptus trees in the ecology of Cryptococcus neoformans is documented worldwide.The aim of this survey was to show the prevalence of C. neoformans during the flowering season of E. camaldulensis at the Delta region in Egypt.Three hundred and eleven samples out of two hundred Eucalyptus trees, including leaves, flowers, and woody trunks, were collected from four governorates in the Delta region.Thirteen isolates of C. neoformans were recovered from Eucalyptus tree samples (4.2%). Molecular identification of C. neoformans was done by capsular gene specific primer CAP64 and serotype identification was done depending on LAC1 gene. This study represents an update on the ecology of C. neoformans associated with Eucalyptus tree in Egyptian environment.