Abstract
Rhizobacterial communities can contribute to plant trait expression and performance, including plant tolerance against abiotic stresses such as drought. The conditioning of microbial communities related to disease resistance over generations has been shown to develop suppressive soils which aid in plant defense responses. Here, we applied this concept for the development of drought resistant soils. We hypothesized that soils conditioned under severe drought stress and tomato cultivation over two generations, will allow for plant selection of rhizobacterial communities that provide plants with improved drought resistant traits. Surprisingly, the plants treated with a drought-conditioned microbial inoculant showed significantly decreased plant biomass in two generations of growth. Microbial community composition was significantly different between the inoculated and control soils within each generation (i.e., microbial history effect) and for the inoculated soils between generations (i.e., conditioning effect). These findings indicate a substantial effect of conditioning soils on the abiotic stress response and microbial recruitment of tomato plants undergoing drought stress.
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Claims 3
Claim · model-written summary
Tomato plants treated with a drought-conditioned microbial inoculant had significantly decreased plant biomass over two generations.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- drought-conditioned microbial inoculante2
- Outcome
- plant biomasse2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“soils conditioned under severe drought stress and tomato cultivation over two generations”
e2“the plants treated with a drought-conditioned microbial inoculant showed significantly decreased plant biomass in two generations of growth”
Claim · model-written summary
Microbial community composition differed significantly between inoculated and control soils within each generation.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- inoculatede3
- Outcome
- Microbial community compositione3
- Direction
- differente3
- Comparator
- control soilse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“soils conditioned under severe drought stress and tomato cultivation over two generations”
e3“Microbial community composition was significantly different between the inoculated and control soils within each generation (i.e., microbial history effect) and for the inoculated soils between generations (i.e., conditioning effect)”
Claim · model-written summary
Microbial community composition of inoculated soils differed significantly between generations.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- inoculatede3
- Outcome
- Microbial community compositione3
- Direction
- differente3
- Comparator
- between generationse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“soils conditioned under severe drought stress and tomato cultivation over two generations”
e3“Microbial community composition was significantly different between the inoculated and control soils within each generation (i.e., microbial history effect) and for the inoculated soils between generations (i.e., conditioning effect)”
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