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220869

EVALUATION OF PHYSIOLOGICAL AND BIOCHEMICAL CHARACTERISTICS OF ALTERNARIA SPECIES ISOLATED FROM SOIL IN ASSIUT GOVERNORATE, EGYPT, IN ADDITION TO DICHOTOMOUS KEY TO THE ENCOUNTER

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Last updated: 05 Jan 2025

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Tags

Botany and Microbiology

Abstract

 Mycobiota of 25 soil samples, collected from Botanical garden of Botany and Microbiology Department, Faculty of Science, Assiut University, were monitored on acidified weak potato dextrose agar (AWPDA), dichloran chloramphenicol peptone agar (DCPA), dichloran glycerol agar (DG-18) and potato carrot agar with manganese (PCA-Mn) media at 25 ºC. One hundred and twenty-two species belong to 47 genera were obtained. Aspergillus was the most predominant genus on all media and A. niger was superior on AWPDA, DG18 and PCA-Mn. Fusarium was the runner up, followed by Alternaria, Curvularia, Talaromyces, Penicillium and Stachybotrys. Fifteen isolates of six species of Alternaria were subjected to some physiological and biochemical tests. The statistically analyzed results showed that, all isolates could significantly grow on ammonium tartarate, ammonium oxalate and glycine, while 14, 13 and 11 isolates wer able to grow on citric acid, lactic acid and sodium nitrite, respectively. Alternaria tenuissima and A. angustiovoidea were highly base producers from ammonium tartarate, while, the maximum base production on glycine was observed by A. angustiovoidea and A. arborescens. All isolates enabled to grow on creatine-sucrose and A. arborescens produced the strongest color, whereas the remaining isolates were negative (11 isolates) to moderate (3). On the other hand, A. chlamydospora and A. angustiovoidea showed maximum growth on mannitol and tannin-sucrose, respectively. Besides, the growth on 15 % NaCl-Cz was distinctive for 60 % and 50 % of A. alternata and A. angustiovoidea isolates, respectively.

DOI

10.21608/aunj.2020.220869

Keywords

: Alternaria, biochemical, Dichotomous key, Mycobiota, physiological, Soil

Volume

49

Article Issue

1

Related Issue

31477

Issue Date

2020-06-01

Receive Date

2022-02-21

Publish Date

2020-06-01

Page Start

34

Page End

59

Print ISSN

2812-5029

Online ISSN

2812-5037

Article File

AUNJ_Volume 49_Issue 1_Pages 34-59.pdf

PDF . 1.0MB

Link

https://aunj.journals.ekb.eg/article_220869.html

Detail API

https://aunj.journals.ekb.eg/service?article_code=220869

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220,869

Type

Novel Research Articles

Type Code

2,242

Publication Type

Journal

Publication Title

Assiut University Journal of Multidisciplinary Scientific Research

Publication Link

https://aunj.journals.ekb.eg/

MainTitle

EVALUATION OF PHYSIOLOGICAL AND BIOCHEMICAL CHARACTERISTICS OF ALTERNARIA SPECIES ISOLATED FROM SOIL IN ASSIUT GOVERNORATE, EGYPT, IN ADDITION TO DICHOTOMOUS KEY TO THE ENCOUNTER

Details

Type

Article

Created At

23 Jan 2023