<Emphasis Type="Italic">Trichoderma</Emphasis> populations from alkaline agricultural soil in the Nile valley,Egypt, consist of only two species |
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| Authors: | Youssuf?Gherbawy Irina?Druzhinina Gihan?M?Shaban Michael?Wuczkowsky Manal?Yaser Mohamed?A?El-Naghy Hans-J?rg?Prillinger Email author" target="_blank">Christian?P?KubicekEmail author |
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| Institution: | 1.Botany Dept., Faculty of Science,South Valley University,Qena,Egypt;2.Division of Gene Technology and Applied Biochemistry, Institute of Chemical Engineering,TU Wien,Wien,Austria;3.Botany Dept., Faculty of Science,El-Minia University,El Minia,Egypt;4.Austrian Center of Biological Resources and Applied Mycology, Institute of Applied Microbiology (IAM),University of Agricultural Science,Wien,Austria;5.Botany Dept., Faculty of Science,Cairo University,Beni-suief,Egypt |
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| Abstract: | The biodiversity of Trichoderma was studied in the Northern half of the Nile valley in Egypt. 20 strains were isolated from 9 different geographic locations,
representing 19 different habitats, all with a pH between 7.3 and 8.4. Only T. harzianum (three ITS1/2 haplotypes and three RAPD-genotypes) and the anamorph of Hypocrea orientalis were found. One of the T. harzianum haplotypes (4 strains) is new. The occurrence of T. harzianum haplotypes and of H. orientalis appeared to be essentially independent of the habitat (pH, plant, soil type), and also did not correlate with biochemical
properties (cellulase and chitinase activity) of the individual strains. These two taxa seem to be indigenous to the Nile
valley, their presence not being influenced by the agricultural history of the soils. |
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