Confirmation of the relationships of Aspergillus egyptiacus and Emericella nidulans using progesterone transformation

Ismail, M.A.; Zohri, A. A.

doi:10.1111/j.1472-765x.1994.tb00825.x

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…The above results indicate that, from the taxonomic aspect, transformation of progesterone can be used as one of the stable biochemical characteristics, in the classification of the genus Streptomyces, as previously demonstrated for the genera Actinomyces (VONDROVA and CAPEK 1963), Penicillium (CAPEK and HANC 1962), Aspergillus (DULANEY et al 1955, ISMAIL andZOHRI 1994), Fusurium (CAPEK and HANC 1960), Alternaria, Stemphyliurn, Cladosporium (CAPEK et al 1974) and several others.…”

Section: Gi- Dehjdmpivgesfronesupporting

confidence: 73%

Transformation reactions of progesterone by different species of Streptomyces

Atta

Zohri

1995

J. Basic Microbiol.

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A systematic study of transformation reactions of the genus Streptomyces with respect to the progesterone molecule was undertaken. The types of transformation reactions by different Streptomyces species were evaluated from the point of view of taxonomy. The isolates tested were divided according to the transformation types into six groups: (1) a group of species transform progesterone to 16 alpha-hydroxyprogesterone; (2) a group of species transform progesterone to 6 beta-hydroxyprogesterone; (3) a group of species transform progesterone to 6 beta, 11 alpha-dihydroxyprogesterone; (4) a group of species dehydrogenate progesterone in C1-2 position; (5) a group of species transform progesterone to 3 derivatives namely 6 beta-hydroxyprogesterone, 6 beta, 11 alpha-dihydroxyprogesterone and dehydrogenation in position C1-2; (6) a group of species with no capacity to transform progesterone into another steroid derivative. From the point of view of Streptomyces classification, the transformation reaction of progesterone fulfil all the requirements of taxonomic feature of Streptomyces. These appear to be specific properties and common to all the strains of individual Streptomyces species tested.

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Section: Gi- Dehjdmpivgesfronesupporting

confidence: 73%

Transformation reactions of progesterone by different species of Streptomyces

Atta

Zohri

1995

J. Basic Microbiol.

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“…Aspergillus egyptiacus was first described by Moubasher and Moustafa in 1972 and was included in the A. nidulans group by most scientists (Moubasher and Moustafa 1972 , Christensen and Raper 1978 ). A. egyptiacus could be used in many fields basing on its function, such as progesterone transformation (Ismail and Zohri 1994 ). As the unique microbial fermented tea, dark tea is fermented with microorganism during the manufacturing process.…”

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confidence: 99%

Structure characteristics of Aspergillus egyptiacus mitochondrial genome, an important fungus during the fermentation of dark tea

Liu³

et al. 2018

Mitochondrial DNA Part B

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Aspergillus egyptiacus is an important fungus during the fermentation process of dark tea. However, there is little study on genetic information about A. egyptiacus. In this study, A. egyptiacus was is isolated from dark tea and first sequenced. The annotation and analysis also have been done for the mitochondrial genome. The length of A. egyptiacus mitochondrial genome is 66,564 bp and include 41 genes. Similar to most fungus, 15 protein-coding genes (PCGs), 24 transfer RNA (tRNA) genes, 2 ribosomal RNA (rRNA) genes, and one non-coding control region (D-loop) were identified in the strand of mitochondrial genome. The GC content is 26.55% and the reconstructed phylogenetic supported the placement of A. egyptiacus in Eurotiomycetes clade. The mitochondrial genome information also may supply references for utilization of A. egyptiacus.

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Based on biochemical and physiological behavior, where isAspergillus egyptiacus better placed?

Zohri

Ismail

1994

Folia Microbiol

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Physiological and biochemical properties were tested in 45 isolates of Aspergillus egyptiacus (16 isolates), Emericella nidulans (16) and Aspergillus versicolor (13). The three fungal species exhibited common and similar features. The big similarity between A. egyptiacus and E. nidulans was greater than between A. egyptiacus and A. versicolor. It included the inability to produce base either from sodium citrate or lactic acid media, growth at 45 degrees C (thermophilicity), and production of very similar pigmentations on Aspergillus flavus and parasiticus agar. A. egyptiacus is therefore better placed in the Aspergillus nidulans-Emericella assemblage.

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Confirmation of the relationships of Aspergillus egyptiacus and Emericella nidulans using progesterone transformation

Cited by 6 publications

References 16 publications

Transformation reactions of progesterone by different species of Streptomyces

Transformation reactions of progesterone by different species of Streptomyces

Structure characteristics of Aspergillus egyptiacus mitochondrial genome, an important fungus during the fermentation of dark tea

Based on biochemical and physiological behavior, where isAspergillus egyptiacus better placed?

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