Biodiversity of Streptomyces of high-mountainous ecosystems of Kyrgyzstan and its biotechnological potential

Dolotkeldieva, Tinatin; Totubaeva, Nurzat

doi:10.1007/s10482-005-9034-x

Cited by 9 publications

(5 citation statements)

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“…For example, strains of Streptomyces , Bacillus , Pseudomonas and Trichoderma were effective not only in helping plants to mobilize and acquire nutrients but also to control plant pathogens (Postma et al 2003 ; Khan et al 2004 ; Perner et al 2006 ; Borriss et al Borriss et al 2011 ; Gopalakrishnan et al 2011a , b ). Microorganisms with PGP and biocontrol potential were found at high incidence in compost, forest and pasture soils (Torsvik et al 2002 ; Tinatin and Nurzat 2006 ). PGP traits of actinomycetes have been reported on pea (Tokala et al 2002 ), bean (Nassar et al 2003 ), tomato (El-Tarabily 2008 ), wheat (Sadeghi et al 2012 ) and rice (Gopalakrishnan et al 2012a ).…”

Section: Introductionmentioning

confidence: 99%

Plant growth-promoting activities of Streptomyces spp. in sorghum and rice

et al. 2013

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Five strains of Streptomyces (CAI-24, CAI-121, CAI-127, KAI-32 and KAI-90) were earlier reported by us as biological control agents against Fusarium wilt of chickpea caused by Fusarium oxysporum f. sp. ciceri (FOC). In the present study, the Streptomyces were characterized for enzymatic activities, physiological traits and further evaluated in greenhouse and field for their plant growth promotion (PGP) of sorghum and rice. All the Streptomyces produced lipase, β-1-3-glucanase and chitinase (except CAI-121 and CAI-127), grew in NaCl concentrations of up to 6%, at pH values between 5 and 13 and temperatures between 20 and 40°C and were highly sensitive to Thiram, Benlate, Captan, Benomyl and Radonil at field application level. When the Streptomyces were evaluated in the greenhouse on sorghum all the isolates significantly enhanced all the agronomic traits over the control. In the field, on rice, the Streptomyces significantly enhanced stover yield (up to 25%; except CAI-24), grain yield (up to 10%), total dry matter (up to 18%; except CAI-24) and root length, volume and dry weight (up to 15%, 36% and 55%, respectively, except CAI-24) over the control. In the rhizosphere soil, the Streptomyces significantly enhanced microbial biomass carbon (except CAI-24), nitrogen, dehydrogenase (except CAI-24), total N, available P and organic carbon (up to 41%, 52%, 75%, 122%, 53% and 13%, respectively) over the control. This study demonstrates that the selected Streptomyces which were antagonistic to FOC also have PGP properties.

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Section: Introductionmentioning

confidence: 99%

Plant growth-promoting activities of Streptomyces spp. in sorghum and rice

et al. 2013

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“…Therefore, investigation of new ecosystems for isolation of actinomycetes is crucial for the discovery of novel actinomycetes and subsequently for natural product-based drug discovery. Recently, several studies reported the investigation of different habitats for isolation of novel actinomycetes as rich sources of bioactive compounds (Magarvey et al 2004;Oskay et al 2004;You et al 2005;Badji et al 2006;Dolotkeldieva and Totubaeva 2006;Li and Liu 2006).…”

Section: Introductionmentioning

confidence: 99%

A new preferential medium for enumeration and isolation of desert actinomycetes

Hozzein

Ali

Rabie

2007

World J Microbiol Biotechnol

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In order to facilitate the discovery of novel actinomycetes from the Egyptian deserts, which can be useful as new sources for bioactive metabolites, different media for enumeration and isolation of desert actinomycetes have been tested. For this purpose, 30 soil samples from different six sites representing the Western and Eastern deserts of Egypt were collected. The two deserts are considered hyper-arid and the soil characteristics were determined. The media used were glucose-yeast extract agar, soil extract agar and a new minimal medium (MM) containing glucose, yeast extract and mineral salts. The effects of the soil characteristics on the total viable actinomycete counts on the three media were evaluated. The results showed that the highest actinomycete count in samples from five out of six sites was obtained on MM. Also MM was more selective for actinomycetes and significantly decreased the number of fungal colonies and to a lower extent the number of bacterial colonies. Moreover, it supported the development of different and diverse groups of actinomycetes. From the results obtained in this study, MM is a new useful medium for enumeration and selective isolation of actinomycetes from the desert soils.

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“…Informations on their diversity could be improved by improvement in isolation methods. Also, unexplored ecological niche or underexploited habitats such as mountainous ecosystems (Dolotkeldieva and Totubaeva 2006) and the rhizosphere and endosphere of not yet studied plants could be pursued as sources of new Actinobacteria. Particularly, indigenous plants might be a rich source of novel actinomycetes species (Bouizgarne et al 2009;Kirby and Meyers 2010).…”

Section: Resultsmentioning

confidence: 99%

Diversity of Plant Associated Actinobacteria

Bouizgarne

Aouamar

2014

Sustainable Development and Biodiversity

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The phylum Actinobacteria encompasses Gram-positive bacteria with a high DNA G+C. In soils, they present multiple lifestyles: rhizosphere saprophytes, endophytes, facultative symbionts and obligate phytopathogens. They play either beneficial or adverse effects towards plants. Numerous studies focused on their taxonomy and preservation. Also, adequate strategies were developed to enable their isolation. Phenotypically, the Actinobacteria is one of the most diverse phyla within bacteria. Their presence was once monitored by classical culture dependent techniques and phenetic characterization. Development of culture independent methods including chemotaxonomic and genomic approaches such as 16S rRNA gene analysis allowed to detect the so called unculturable bacteria. Major works on their diversity combine culture dependant and independant techniques. This chapter focuses on the phenetic and genetic diversity of Actinobacteria in plant-soil systems. It begins with some knowledge of their biology and their taxonomy, followed by a brief overview of the methods that have facilitated advances in the understanding of their diversity. It also discusses diversity of ecologically important plant associated Actinobacteria (rhizosphere and phyllosphere colonizers, endophytes, symbionts and phytopathogens).

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Biodiversity of Streptomyces of high-mountainous ecosystems of Kyrgyzstan and its biotechnological potential

Cited by 9 publications

References 1 publication

Plant growth-promoting activities of Streptomyces spp. in sorghum and rice

Plant growth-promoting activities of Streptomyces spp. in sorghum and rice

A new preferential medium for enumeration and isolation of desert actinomycetes

Diversity of Plant Associated Actinobacteria

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