Abdeljabbar Hedi

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A novel obligately anaerobic, non-spore-forming, rod-shaped mesophilic bacterium, which stained Gram-positive but showed the typical cell wall structure of Gram-negative bacteria, was isolated from an upflow anaerobic filter treating abattoir wastewaters in Tunisia. The strain, designated LIND7H(T), grew at 20-45 °C (optimum 35-40 °C) and at pH 5.0-8.5(More)
A new halophilic anaerobe was isolated from the hypersaline surface sediments of El-Djerid Chott, Tunisia. The isolate, designated as strain 6SANG, grew at NaCl concentrations ranging from 14 to 30%, with an optimum at 20–22%. Strain 6SANG was a non-spore-forming, non-motile, rod-shaped bacterium, appearing singly, in pairs, or occasionally as long chains(More)
A new chitinase produced by the moderately halophilic bacterium Virgibacillus marismortui strain M3-23 was identified and characterized. Distinguishable characteristics of high activity and stability at different pH, temperatures and salinity of M3-23 chitinase are reported. Analysis of the catalytic domain sequence from the enzyme highlighted its(More)
Bacterial and archaeal aerobic communities were recovered from sediments from the shallow El-Djerid salt lake in Tunisia, and their salinity gradient distribution was established. Six samples for physicochemical and microbiological analyses were obtained from 6 saline sites in the lake for physico-chemical and microbiological analyses. All samples studied(More)
A novel thermophilic anaerobic and microaerophilic bacterium (optimal growth in the presence of 5–10% O2), strain Nad S1T was isolated from the terrestrial hot spring of Hammam Sidi Jdidi, Nabeul, Tunisia. Cells were motile rods having a Gram-positive cell wall structure. Strain Nad S1T grew optimally at 55°C (range 37–70°C). Optimum pH for growth was(More)
We investigated the occurrence ofTrichoderma in the Oueslatia forest located in the centre-west of Tunisia, which represents a good example for studying a distribution ofTrichoderma between different soil horizons of a forest with Mediterranean bioclimate. One hundred-five isolates obtained were identified at the genus level by analysis of morphological(More)
An aerobic, Gram-negative, moderately halophilic bacterium, oxidase, and catalase positive-designated Abdou3T, was isolated from salted traditional foods (Anchovies) in Tunisia. Cells were rod-shaped, non-spore-forming and motile. Growth occurred at 15–45 °C (optimum, 37 °C), pH 5.5–8.75 (optimum, 7.3), and in the presence of 1–15 % NaCl (optimum, 10 %).(More)
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