Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties

Abstract. Aouar L, Boukelloul I, Benadjila A. 2020. Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties. Biodiversitas 21: 5672-5683. To produce new bioactive substances of agricultural interest, extreme ecosystems can...

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Autores principales:	Lamia AOUAR, INAS BOUKELLOUL, ABDERRAHMANE BENADJILA
Formato:	article
Lenguaje:	EN
Publicado:	MBI & UNS Solo 2020
Materias:	antagonism, arid soil, indol-3-acetic acid, phosphate, siderophores, streptomyces Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/a9e2872ddd414e90bfbe7842c4d0ac9a
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spelling	oai:doaj.org-article:a9e2872ddd414e90bfbe7842c4d0ac9a2021-11-22T00:52:01ZIdentification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties1412-033X2085-472210.13057/biodiv/d211212https://doaj.org/article/a9e2872ddd414e90bfbe7842c4d0ac9a2020-11-01T00:00:00Zhttps://smujo.id/biodiv/article/view/6974https://doaj.org/toc/1412-033Xhttps://doaj.org/toc/2085-4722Abstract. Aouar L, Boukelloul I, Benadjila A. 2020. Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties. Biodiversitas 21: 5672-5683. To produce new bioactive substances of agricultural interest, extreme ecosystems can be a source of unexplored microorganisms. Accordingly, in this study, twenty-two actinobacteria strains were obtained from rhizospheric arid soils of palm groves collected from Biskra and El Oued in the Algerian Sahara. All isolates were examined for the in vitro antifungal potential towards phytopathogenic fungi: Aspergillus flavus, Verticillium dahlia, Rhizoctonia solani, Botrytis cinerea and Fusarium oxysporum as well as for their antibacterial property toward phytopathogenic bacteria: Streptomyces scabiei, Pectobacterium carotovorum and Agrobacterium tumefaciens. The three isolates (13%) that inhibited at least five pathogens were then selected, identified and assessed for their attributes to produce indole-3-acetic acid (IAA) and siderophores, to solubilize phosphate, and to antagonize Streptomyces scabiei in vivo. According to phylogenetic analysis performed with 16S rDNA sequence, chemotaxonomy and phenotypic characteristics, the strain SO1, which inhibited all tested pathogens, was assigned to Streptomyces flaveus. While, strains SO2 and SB1 were affiliated to Streptomyces enissocaesilis and Streptomyces albidoflavus, respectively. All strains produced IAA but only SO1 and SB1 were able to elaborate siderophores catecholate-type. Two strains SO1 and SO2 exhibited a capacity to solubilize phosphate and SO1 was able to suppress the pathogenic effect of Streptomyces scabiei on radish seedlings. The findings indicate that SO1 strain may reveal the potential for use as a biocontrol agent and plant growth promoter.Lamia AOUARINAS BOUKELLOULABDERRAHMANE BENADJILAMBI & UNS Soloarticleantagonism, arid soil, indol-3-acetic acid, phosphate, siderophores, streptomycesBiology (General)QH301-705.5ENBiodiversitas, Vol 21, Iss 12 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	antagonism, arid soil, indol-3-acetic acid, phosphate, siderophores, streptomyces Biology (General) QH301-705.5
spellingShingle	antagonism, arid soil, indol-3-acetic acid, phosphate, siderophores, streptomyces Biology (General) QH301-705.5 Lamia AOUAR INAS BOUKELLOUL ABDERRAHMANE BENADJILA Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties
description	Abstract. Aouar L, Boukelloul I, Benadjila A. 2020. Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties. Biodiversitas 21: 5672-5683. To produce new bioactive substances of agricultural interest, extreme ecosystems can be a source of unexplored microorganisms. Accordingly, in this study, twenty-two actinobacteria strains were obtained from rhizospheric arid soils of palm groves collected from Biskra and El Oued in the Algerian Sahara. All isolates were examined for the in vitro antifungal potential towards phytopathogenic fungi: Aspergillus flavus, Verticillium dahlia, Rhizoctonia solani, Botrytis cinerea and Fusarium oxysporum as well as for their antibacterial property toward phytopathogenic bacteria: Streptomyces scabiei, Pectobacterium carotovorum and Agrobacterium tumefaciens. The three isolates (13%) that inhibited at least five pathogens were then selected, identified and assessed for their attributes to produce indole-3-acetic acid (IAA) and siderophores, to solubilize phosphate, and to antagonize Streptomyces scabiei in vivo. According to phylogenetic analysis performed with 16S rDNA sequence, chemotaxonomy and phenotypic characteristics, the strain SO1, which inhibited all tested pathogens, was assigned to Streptomyces flaveus. While, strains SO2 and SB1 were affiliated to Streptomyces enissocaesilis and Streptomyces albidoflavus, respectively. All strains produced IAA but only SO1 and SB1 were able to elaborate siderophores catecholate-type. Two strains SO1 and SO2 exhibited a capacity to solubilize phosphate and SO1 was able to suppress the pathogenic effect of Streptomyces scabiei on radish seedlings. The findings indicate that SO1 strain may reveal the potential for use as a biocontrol agent and plant growth promoter.
format	article
author	Lamia AOUAR INAS BOUKELLOUL ABDERRAHMANE BENADJILA
author_facet	Lamia AOUAR INAS BOUKELLOUL ABDERRAHMANE BENADJILA
author_sort	Lamia AOUAR
title	Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties
title_short	Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties
title_full	Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties
title_fullStr	Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties
title_full_unstemmed	Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties
title_sort	identification of antagonistic streptomyces strains isolated from algerian saharan soils and their plant growth promoting properties
publisher	MBI & UNS Solo
publishDate	2020
url	https://doaj.org/article/a9e2872ddd414e90bfbe7842c4d0ac9a
work_keys_str_mv	AT lamiaaouar identificationofantagonisticstreptomycesstrainsisolatedfromalgeriansaharansoilsandtheirplantgrowthpromotingproperties AT inasboukelloul identificationofantagonisticstreptomycesstrainsisolatedfromalgeriansaharansoilsandtheirplantgrowthpromotingproperties AT abderrahmanebenadjila identificationofantagonisticstreptomycesstrainsisolatedfromalgeriansaharansoilsandtheirplantgrowthpromotingproperties
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Identification of antagonistic Streptomyces strains isolated from Algerian Saharan soils and their plant growth promoting properties

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