Abstract
The presence and composition of soil microbial communities has been shown to have a large impact on plant-plant interactions and consequently plant diversity and composition. The goal of the present study was to evaluate impact of arbuscular mycorrhizal fungi (AMF) and nitrogen-fixing bacteria, which constitutes an essential link between the soil and the plant's roots. A greenhouse pot experiment was conducted to evaluate the feasibility of using selected microbes to improve Hieracium pilosella and Medicago sativa growth on Zn-Pb-rich site. Results of studies revealed that biomass, the dry mass of shoots and roots, increased significantly when plants were inoculated with mycorrhizal fungi and nitrogen-fixing bacteria. The addition of Azospirillum sp. and Nostoc edaphicum without mycorrhiza suppressed plant growth. Single bacterial inoculation alone does not have a positive effect on M. sativa growth, while co-inoculation with AMF improved plant growth. Plant vitality (expressed by the performance index) was improved by the addition of microbes. However, our results indicated that even dry heat sterilization of the substratum created imbalanced relationships between soil-plant and plants and associated microorganisms. The studies indicated that AMF and N2-fixers can improve revegetation of heavy metal-rich industrial sites, if the selection of interacting symbionts is properly conducted.
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Claims 8
Claim · model-written summary
Mycorrhizal fungi and nitrogen-fixing bacteria significantly increased shoot and root dry mass.
- Taxon
- Hieracium pilosella
_-_geograph.org.uk_-_1369110.jpg?width=60)
Pilosella officinarume1 - Treatment
- inoculated with mycorrhizal fungi and nitrogen-fixing bacteriae0
- Interactor
- mycorrhizal fungie0symbiont
- Second interactor
- nitrogen-fixing bacteriae0symbiont
- Outcome
- dry mass of shoots and rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_-_geograph.org.uk_-_1369110.jpg?width=500)
Verbatim
e0“biomass, the dry mass of shoots and roots, increased significantly when plants were inoculated with mycorrhizal fungi and nitrogen-fixing bacteria”
e1“Hieracium pilosella and Medicago sativa growth”
Claim · model-written summary
Azospirillum sp. without mycorrhiza suppressed plant growth.
- Taxon
- Hieracium pilosellaPilosella officinarume1
- Treatment
- addition of Azospirillum sp.e0
- Interactor
- Azospirillum sp.
Azospirillume0symbiont - Outcome
- plant growthe0
- Direction
- suppressede0
- Comparator
- without mycorrhizae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Azospirillum sp. and Nostoc edaphicum without mycorrhiza suppressed plant growth”
e1“Hieracium pilosella and Medicago sativa growth”
Claim · model-written summary
Nostoc edaphicum without mycorrhiza suppressed plant growth.
- Taxon
- Hieracium pilosellaPilosella officinarume1
- Treatment
- Nostoc edaphicum without mycorrhizae0
- Interactor
- Nostoc edaphicumNostoc edaphicume0symbiont
- Outcome
- plant growthe0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Azospirillum sp. and Nostoc edaphicum without mycorrhiza suppressed plant growth”
e1“Hieracium pilosella and Medicago sativa growth”
Claim · model-written summary
Bacterial inoculation alone did not positively affect Medicago sativa growth.
- Taxon
- M. sativa
Medicago sativae0 - Treatment
- Single bacterial inoculation alonee0
- Interactor
- bacteriale0symbiont
- Outcome
- M. sativa growthe0
- Direction
- does not have a positive effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single bacterial inoculation alone does not have a positive effect on M. sativa growth”
Claim · model-written summary
Co-inoculation with AMF improved Medicago sativa growth.
- Taxon
- M. sativaMedicago sativae1
- Treatment
- co-inoculation with AMFe0
- Interactor
- AMFe0symbiont
- Outcome
- plant growthe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“co-inoculation with AMF improved plant growth”
e1“M. sativa growth”
Claim · model-written summary
Adding microbes improved plant vitality measured by performance index.
- Taxon
- Hieracium pilosellaPilosella officinarume1
- Treatment
- addition of microbese0
- Interactor
- microbese0symbiont
- Outcome
- Plant vitality (expressed by the performance index)e0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant vitality (expressed by the performance index) was improved by the addition of microbes”
e1“Hieracium pilosella and Medicago sativa growth”
Claim · model-written summary
Dry heat sterilization disturbed soil-plant-microorganism relationships.
- Taxon
- Hieracium pilosellaPilosella officinarume1
- Treatment
- dry heat sterilization of the substratume0
- Outcome
- imbalanced relationships between soil-plant and plants and associated microorganismse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“even dry heat sterilization of the substratum created imbalanced relationships between soil-plant and plants and associated microorganisms”
e1“Hieracium pilosella and Medicago sativa growth”
Claim · model-written summary
Carefully selected AMF and nitrogen fixers can aid revegetation of heavy metal-rich sites.
- Taxon
- Hieracium pilosellaPilosella officinarume1
- Outcome
- improve revegetation of heavy metal-rich industrial sitese0
- Qualifier
- if the selection of interacting symbionts is properly conductede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF and N2-fixers can improve revegetation of heavy metal-rich industrial sites, if the selection of interacting symbionts is properly conducted”
e1“Hieracium pilosella and Medicago sativa growth”
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See all 137 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.