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18644

Microbial Diversity in Two Egyptian Soils

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Last updated: 03 Jan 2025

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Abstract

Microbial DNA extracted from two soil samples collected from Beni-Suef and Kafr El-Sheikh were subjected to PCR amplification with primers specific for 16S rDNA gene and cloned in linear pCR 2.1 plasmid vector. Recombinants were transformed into Escherichia coli competent cells. Sixty clone inserts (30 from each soil sample) were sequenced and subjected to phylogenetic analyses. Forty sequences of the sixty clones were affiliated with previously recognized bacterial groups. Thirty six of these had closest relatives among cultured taxa and clustered primarily with three divisions containing microrganisms commonly associated with soil: Proteobacteria, Gram-positive organisms, and Cytophaga-Flexibacter-Bacteroides group. The results also showed the presence of one clone related to Nirospira retrieved from Beni-Suef soil, one clone from Archaea kingdom retrieved from Kafr El-Sheikh soil, and three clones affiliated to the newly described Holophaga-Acidobacterium phylum in both Beni- Suef and Kafr El-Sheikh soils. Seven sequences grouped with known divisions but had closest relatives among soil taxa known only from rDNA sequences analysis. Twelve clone sequences were distantly related to known sequences. Many of these sequences may represent new bacterial divisions.

Keywords

Archaea, Beni-Suef, Holophaga-Acidobacterium, Kafr El-Sheikh, microbial diversity, Phylogenetic analysis, Proteobacteria, soil DNA, 16S rDNA

Authors

First Name

Said

Last Name

Badr El-Din

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Affiliation

Agricultural Microbiology Department, National Research Centre, Dokki, Cairo, Egypt

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Orcid

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First Name

Samir

Last Name

Radwan

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-

Affiliation

Agricultural Microbiology Department, National Research Centre, Dokki, Cairo, Egypt

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Orcid

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First Name

Wafaa

Last Name

Zidan

MiddleName

-

Affiliation

Agricultural Microbiology Department, National Research Centre, Dokki, Cairo, Egypt

Email

somicnrc@yahoo.com

City

-

Orcid

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First Name

Moawad

Last Name

Zahra

MiddleName

-

Affiliation

Agricultural Microbiology Department, Faculty of Agriculture, Cairo University, Egypt

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Volume

1

Article Issue

2

Related Issue

3879

Issue Date

2018-11-01

Receive Date

2018-11-08

Publish Date

2018-11-01

Page Start

111

Page End

118

Print ISSN

1687-5052

Online ISSN

2090-2786

Link

https://cat.journals.ekb.eg/article_18644.html

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https://cat.journals.ekb.eg/service?article_code=18644

Order

15

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Original Article

Type Code

644

Publication Type

Journal

Publication Title

Catrina: The International Journal of Environmental Sciences

Publication Link

https://cat.journals.ekb.eg/

MainTitle

Microbial Diversity in Two Egyptian Soils

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Article

Created At

22 Jan 2023