Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 553890
Title Enhanced tomato plant growth in soil under reduced P supply through microbial inoculants and microbiome shifts
Author(s) Eltlbany, Namis; Baklawa, Mohamed; Ding, Guo Chun; Nassal, Dinah; Weber, Nino; Kandeler, Ellen; Neumann, Günter; Ludewig, Uwe; Overbeek, Leo van; Smalla, Kornelia
Source FEMS microbiology ecology 95 (2019)9. - ISSN 0168-6496 - 14 p.
Department(s) Biointeractions and Plant Health
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Bacillus - Pseudomonas - Trichoderma - microbiome shifts - nutrient accumulation - rhizocompetence - soil enzymes

Soil microbial communities interact with roots, affecting plant growth and nutrient acquisition. In the present study, we aimed to decipher the effects of the inoculants Trichoderma harzianum T-22, Pseudomonas sp. DSMZ 13134, Bacillus amyloliquefaciens FZB42 or Pseudomonas sp. RU47 on the rhizosphere microbial community and their beneficial effects on tomato plants grown in moderately low phosphorous soil under greenhouse conditions. We analyzed the plant mass, inoculant colony forming units and rhizosphere communities on 15, 22, 29 and 43 days after sowing. Selective plating showed that the bacterial inoculants had a good rhizocompetence and accelerated shoot and root growth and nutrient accumulation. 16S rRNA gene fingerprints indicated changes in the rhizosphere bacterial community composition. Amplicon sequencing revealed that rhizosphere bacterial communities from plants treated with bacterial inoculants were more similar to each other and distinct from those of the control and the Trichoderma inoculated plants at harvest time, and numerous dynamic taxa were identified. In conclusion, likely both, inoculants and the rhizosphere microbiome shifts, stimulated early plant growth mainly by improved spatial acquisition of available nutrients via root growth promotion. At harvest, all tomato plants were P-deficient, suggesting a limited contribution of inoculants and the microbiome shifts to the solubilization of sparingly soluble soil P.

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