Aspergillus terreus occurrence in middle of Upper Egypt, genetic variation and production of itaconic and mevinolinic acids
Journal Title: European Journal of Biological Research - Year 2016, Vol 6, Issue 4
Abstract
Several isolates of Aspergillus terreus were identified and isolated as fungal flora from sixty-four out of seventy screened sources in middle of Upper Egypt. A. terreus was common in plant roots (dill, geranium and petunia) and soil cultivated with plants (basil, bougainvillea, fababean and wheat). Class of cultivated soil comprised the highest prevalence percentage (46%) of A. terreus followed by plant roots (30%). Soil cultivated with basil represented the main source of A. terreus prevalence (15%) and sesame seeds represented the highest occurrence. According to the potentiality of different A. terreus isolates for mevinolinic acid yield, 105 isolates (out of 152 isolates) were producers. They were grouped into 4 categories according to their production level of itaconic (IA) and mevinolinic (MA). The isolates that higher producers of IA were lower producers of MA and Vice versa, compared to A. terreus FRR 5360. Only one isolate (ATWD 136) had ability to produce both acids in higher level than FRR 5360 strain. The isolates that contain cadA (IA gene) are containing lovB (MA gene) and vice versa. This confirms that itaconic acid genomic region is directly linked to mevinolinic acid gene cluster. RAPD-PCR indicated that the isolates were genetically distinct and differed from each other.
Authors and Affiliations
Hassan A. H. Hasan, Ameer E. Elfarash, Khaled A. E. Abdrabo
Keywords
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- EP ID EP230392
- DOI 10.5281/zenodo.163652
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