Etude Comparative des Actinobacteries de la Rhizosphere de Deux Cultivars de Palmier Dattier Sensible et Resistant au Bayoud = Comparative Study of Rhizospheric Actinobacteria of Two Date Palm Sensitive and Resistant Cultivars to Bayoud

Lynda Lamari; Hadjira Boudjella; Noureddine Bouras; Nasserdine Sabaou

doi:10.12816/0045903

Article Details

Etude Comparative des Actinobacteries de la Rhizosphere de Deux Cultivars de Palmier Dattier Sensible et Resistant au Bayoud = Comparative Study of Rhizospheric Actinobacteria of Two Date Palm Sensitive and Resistant Cultivars to Bayoud

Authors:

Lynda Lamari | Hadjira Boudjella | Noureddine Bouras | Nasserdine Sabaou

Publisher:

Kasdi Merbah University of Ouargla

Main Topics:

Plants

Journal:

Algerian Journal of Arid Environment 2015 Vol.5 Issue 1, pp.3-17

Document Type:

Article

Publication Date:

6/2015

Document Language:

French

Document ID (Org No.):

116472

Frequency:

Bi-Annual

pISSN:

21701318

DOI:

10.12816/0045903

Descriptors:

Keywords:

Abstract:

 L’étude porte sur la distribution quantitative et qualitative des actinobactéries de la rhizosphère de deux cultivars de palmier dattier, l’un résistant et l’autre sensible à la fusariose, ainsi que sur le pouvoir antagoniste de ces microorganismes envers l’agent pathogène Fusarium oxysporum f. sp. albedinis. Les densités d’actinobactéries les plus élevées sont notées au niveau des sols rhizosphériques du cultivar sensible. En revanche, c’est à l’intérieur des racines du cultivar résistant que les espèces dominantes sont présentes, dont certaines souches testées contre F. o. albedinis se sont montrées très efficaces. Des différences dans la composition en genres et en espèces sont notées entre les cultivars. Les actinobactéries sont essentiellement représentées par les genres Streptomyces et Nocardioides avec une diminution nette du pourcentage des Streptomyces, surtout au niveau de l’endorhizosphère, en allant du cultivar résistant vers le cultivar sensible sain ou surtout malade. Les espèces les plus importantes numériquement sont apparentées à Streptomyces chartreusis, Streptomyces gannmycicus et Nocardioides albus.

 This report deals with the qualitative and quantitative distribution of the actinobacteria in the rhizosphere of two date-palm cultivars, one sensitive and one resistant to fusariosis, and with the antagonistic capacity of these microorganisms against the fungal pathogen Fusarium oxysporum f. sp. albedinis. The highest actinobacterial densities are noticed in the rhizospheric soils of the susceptible cultivar. However, we observed that the dominant species are present in the roots of resistant cultivar, and some strains tested were very effective against F. o. albedinis. Differences in the composition of genera and species are found between cultivars. Actinobacteria are mainly represented by the genera Streptomyces and Nocardioides with a net decrease in the percentage of Streptomyces, especially from endorhizosphere, going from resistant cultivar to healthy susceptible cultivar or mainly sick. Numerically, the most important species are related to Streptomyces chartreusis, Streptomyces gannmycicus and Nocardioides albus.

Article Details

Etude Comparative des Actinobacteries de la Rhizosphere de Deux Cultivars de Palmier Dattier Sensible et Resistant au Bayoud = Comparative Study of Rhizospheric Actinobacteria of Two Date Palm Sensitive and Resistant Cultivars to Bayoud

Authors:

Lynda Lamari | Hadjira Boudjella | Noureddine Bouras | Nasserdine Sabaou

Publisher:

Kasdi Merbah University of Ouargla

Main Topics:

Plants

Journal:

Algerian Journal of Arid Environment 2015 Vol.5 Issue 1, pp.3-17

Document Type:

Article

Publication Date:

6/2015

Document Language:

French

Document ID (Org No.):

116472

Frequency:

Bi-Annual

pISSN:

21701318

DOI:

10.12816/0045903

Descriptors:

PRINCIPES

MYCOTOXINS

RHIZOSPHERE

ANTAGONISM

ALGERIA

Actinobactéries

Palmier Dattier

Fusariose

Rhizosphère

Antagonisme

Actinobacteria

Date-Palm

Fusariosis

Rhizosphere

Antagonism

Issues

Article Details

Authors: Lynda Lamari | Hadjira Boudjella | Noureddine Bouras | Nasserdine Sabaou

Publisher: Kasdi Merbah University of Ouargla

Main Topics: Plants

Journal: Algerian Journal of Arid Environment 2015 Vol.5 Issue 1, pp.3-17

Document Type: Article

Publication Date: 6/2015

Document Language: French

Document ID (Org No.): 116472

Frequency: Bi-Annual

pISSN: 21701318

DOI: 10.12816/0045903

Descriptors:

Issues

Authors:

Lynda Lamari | Hadjira Boudjella | Noureddine Bouras | Nasserdine Sabaou

Publisher:

Kasdi Merbah University of Ouargla

Main Topics:

Plants

Journal:

Algerian Journal of Arid Environment 2015 Vol.5 Issue 1, pp.3-17

Document Type:

Article

Publication Date:

6/2015

Document Language:

French

Document ID (Org No.):

116472

Frequency:

Bi-Annual

pISSN:

21701318

DOI:

10.12816/0045903