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Evaluating the impact of the biocontrol agent Trichoderma harzianum ITEM 3636 on indigenous microbial communities from field soils.
- Source :
-
Journal of applied microbiology [J Appl Microbiol] 2019 Feb; Vol. 126 (2), pp. 608-623. Date of Electronic Publication: 2018 Nov 29. - Publication Year :
- 2019
-
Abstract
- Aim: To investigate the impact of inoculating peanut seeds with the biocontrol agent Trichoderma harzianum ITEM 3636 on the structure of bacterial and fungal communities from agricultural soils.<br />Methods and Results: Polymerase chain reaction (PCR)-denaturing gradient gel electrophoresis (PCR-DGGE) and next-generation sequencing (NGS) of amplicons (or marker gene amplification metagenomics) were performed to investigate potential changes in the structure of microbial communities from fields located in a peanut-producing area in the province of Córdoba, Argentina. Fields had history of peanut smut (caused by Thecaphora frezii) incidence. The Shannon indexes (H'), which estimate diversity, obtained from the PCR-DGGE assays did not show significant differences neither for bacterial nor for fungal communities between control and inoculation treatments. On the other hand, the number of operational taxonomic units obtained after NGS was similar between all the analysed samples. Moreover, results of alpha and beta diversity showed that there were no significant variations between the relative abundances of the most representative bacterial and fungal phyla and genera, in both fields.<br />Conclusions: Trichoderma harzianum ITEM 3636 decreases the incidence and severity of agriculturally relevant diseases without causing significant changes in the microbial communities of agricultural soils.<br />Significance and Impact of the Study: Our investigations provide information on the structure of bacterial and fungal communities in peanut-producing fields after inoculation of seeds with a biocontrol agent.<br /> (© 2018 The Society for Applied Microbiology.)
- Subjects :
- Agriculture
Arachis
Argentina
Bacteria genetics
Bacteria isolation & purification
Denaturing Gradient Gel Electrophoresis
Fungi genetics
Fungi isolation & purification
High-Throughput Nucleotide Sequencing
Microbiota
Polymerase Chain Reaction
Seeds
Soil chemistry
Biological Control Agents
Soil Microbiology
Trichoderma
Subjects
Details
- Language :
- English
- ISSN :
- 1365-2672
- Volume :
- 126
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Journal of applied microbiology
- Publication Type :
- Academic Journal
- Accession number :
- 30382616
- Full Text :
- https://doi.org/10.1111/jam.14147