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Rhizosphere microflora of some citrus as a source of antagonistic actinomycetes

Identifieur interne : 002C42 ( Main/Exploration ); précédent : 002C41; suivant : 002C43

Rhizosphere microflora of some citrus as a source of antagonistic actinomycetes

Auteurs : Victoria Gesheva [Bulgarie]

Source :

RBID : Pascal:02-0541404

Descripteurs français

English descriptors

Abstract

Qualitative distribution of microorganisms in rhizosphere soils under citrus trees (lemon and orange) was observed by the serial dilution-spread plate method. The maximally represented actinomycete genus was Streptomyces followed by Micromonospora and Nocardia. The streptomycete strains were classified in taxonomical groups by their characteristics. Several cultures produced antibacterial or antifungal antibiotics. Some of the antibiotics have been determined as beta-lactams, polyethers, nonpolyenic macrolides and azalomycin B. Other strains synthesized exoenzymes.


Affiliations:


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Le document en format XML

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<s1>Institute of Microbiology, Bulgarian Academy of Sciences</s1>
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<country>Bulgarie</country>
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<title level="j" type="main">European journal of soil biology</title>
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<term>Antagonist</term>
<term>Antibacterial agent</term>
<term>Antifungal agent</term>
<term>Azalomycin</term>
<term>Citrus limon</term>
<term>Citrus sinensis</term>
<term>Enzymatic activity</term>
<term>Ether polymer</term>
<term>Macrolide</term>
<term>Microflora</term>
<term>Micromonospora</term>
<term>Microorganism interrelationships</term>
<term>Nocardia</term>
<term>Rhizosphere</term>
<term>Streptomyces</term>
<term>β-Lactams</term>
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<term>Rhizosphère</term>
<term>Microflore</term>
<term>Antagoniste</term>
<term>Interaction microorganisme</term>
<term>Antibactérien</term>
<term>Antifongique</term>
<term>Activité enzymatique</term>
<term>Citrus sinensis</term>
<term>Citrus limon</term>
<term>Streptomyces</term>
<term>Micromonospora</term>
<term>Nocardia</term>
<term>β-Lactamines</term>
<term>Ether polymère</term>
<term>Macrolide</term>
<term>Azalomycine</term>
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<div type="abstract" xml:lang="en">Qualitative distribution of microorganisms in rhizosphere soils under citrus trees (lemon and orange) was observed by the serial dilution-spread plate method. The maximally represented actinomycete genus was Streptomyces followed by Micromonospora and Nocardia. The streptomycete strains were classified in taxonomical groups by their characteristics. Several cultures produced antibacterial or antifungal antibiotics. Some of the antibiotics have been determined as beta-lactams, polyethers, nonpolyenic macrolides and azalomycin B. Other strains synthesized exoenzymes.</div>
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