Isolation and identification of actinomycetes from a compost-amended soil with potential as biocontrol agents

Cuesta, G.; García-de-la-Fuente, Rosana; Abad, M.; Fornés, F.

doi:10.1016/j.jenvman.2010.11.023

Cited by 66 publications

(34 citation statements)

References 16 publications

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“…This could indicate that in this case these microbial communities have a bigger role in decomposition of organic materials particularly for degradation of macromolecules such as cellulose, hemicellulose, etc. [45] than in a positive impact on plant disease suppression due to a strong ability to produce antibiotic-like compounds [46, 47]. In this sense, Bonanomi et al [48] concluded that disease suppression was only correlated with Actinobacteria in a limited number of experimental cases.…”

Section: Discussionmentioning

confidence: 99%

Relationship of microbial communities and suppressiveness of Trichoderma fortified composts for pepper seedlings infected by Phytophthora nicotianae

et al. 2017

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The understanding of the dynamic of soil-borne diseases is related to the microbial composition of the rhizosphere which is the key to progress in the field of biological control. Trichoderma spp. is commonly used as a biological control agent. The use of next generation sequencing approaches and quantitative PCR are two successful approaches to assess the effect of using compost as substrate fortified with two Trichoderma strains (Trichoderma harzianum or Trichoderma asperellum) on bacterial and fungal communities in pepper rhizosphere infected with Phytophthora nicotianae. The results showed changes in the bacterial rhizosphere community not attributed to the Trichoderma strain, but to the pathogen infection, while, fungi were not affected by pathogen infection and depended on the type of substrate. The Trichoderma asperellum fortified compost was the most effective combination against the pathogen. This could indicate that the effect of fortified composts is greater than compost itself and the biocontrol effect should be attributed to the Trichoderma strains rather than the compost microbiota, although some microorganisms could help with the biocontrol effect.

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Section: Discussionmentioning

confidence: 99%

Relationship of microbial communities and suppressiveness of Trichoderma fortified composts for pepper seedlings infected by Phytophthora nicotianae

et al. 2017

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“…The AS had a very-low salt content that increased during the development of the pepper plants and was slightly above both the optimal values proposed by Abad et al (1993) and those obtained by Urrestarazu et al (2005) for two different textures of AS. By contrast, the EC of the AH lessened during pepper development, probably due to precipitation of mineral salts, volatilization of ammonia, or the absence of an increase in ion concentrations as a consequence of adequate crop utilization of the nutrient solution and (most likely) a washing effect of the fertigation (Cuesta et al, 2012).…”

Section: Evolution Of the As And Ah Substrates During Pepper Cultivationmentioning

confidence: 96%

Use of almond shell and almond hull as substrates for sweet pepper cultivation. Effects on fruit yield and mineral content

Valverde¹,

Madrid²,

García³

et al. 2013

Span. j. agric. res.

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The use of almond by products as substrate in greenhouses for growing vegetables has a great economic interest. The objective of this work was to assess the use of two almond by-products (almond shell-AS and almond hull-AH), which had been previously conditioned without composting, as substrates for pepper (cv. Caprino F1) production and to study their effects on the yield, fruit size, and fruit mineral content. Physical, physico-chemical, and chemical characteristics of the almond by-products were determined both initially and during the pepper growing season. Initially, all values of the parameters studied -except sulfur and iron-differed significantly between the two substrates. During cultivation, the 18 substrate parameters and variables tested -except bulk density-exhibited significant variations with time for AS; the same occurred for AH, exceptions being pH, total nitrogen N t , N-NH 4 , bulk density, and manganese. The changes in both substrates for the K, N, and S concentrations were significant. The nutrient levels in AH were higher than for AS. The almond shell and almond hull substrates produced slight decreases in total fruit yield with respect to the control (0.79 and 3.22 for AS and AH, respectively), with a lesser decrease for AS, due to reductions in the number of fruits per plant rather than to reductions in individual fruit weight. The plants grown on the AS and AH substrates showed a decrease in total fruit yield, due to reductions in the number of fruits per plant rather than reductions in individual fruit weight.

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“…The sediment samples were air dried; heated aseptically, which stimulates the isolation of actinomycetes by eliminating most unwanted Gram negative bacteria. Appropriate selective media such as starch casein agar, glycerol yeast extract agar and antifungal antibiotics (amphotericin B) at 25 µg/mL were used for actinomycetes growth promotion and also for prevention of fungal contamination [26,27] .…”

Section: Pretreatment Of Samplesmentioning

confidence: 99%

Isolation and characterization of potential antibiotic producing actinomycetes from water and sediments of Lake Tana, Ethiopia

Gebreyohannes

Moges

Sahile

et al. 2013

Asian Pacific Journal of Tropical Biomedicine

142

102

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Isolation and identification of actinomycetes from a compost-amended soil with potential as biocontrol agents

Cited by 66 publications

References 16 publications

Relationship of microbial communities and suppressiveness of Trichoderma fortified composts for pepper seedlings infected by Phytophthora nicotianae

Relationship of microbial communities and suppressiveness of Trichoderma fortified composts for pepper seedlings infected by Phytophthora nicotianae

Use of almond shell and almond hull as substrates for sweet pepper cultivation. Effects on fruit yield and mineral content

Isolation and characterization of potential antibiotic producing actinomycetes from water and sediments of Lake Tana, Ethiopia

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