Paper · 2021 · Forests

Effects of Mineral-Solubilizing Microorganisms on Root Growth, Soil Nutrient Content, and Enzyme Activities in the Rhizosphere Soil of Robinia pseudoacacia

Chong Li; Zhaohui Jia; Lu Zhai; et al.

4
claims
8
verbatim quotes
31
citations
2
research areas
✓
Open access · cc-by

Abstract

Background: Abandoned mining sites are becoming increasingly common due to anthropogenic activities. Consequently, external-soil spray seeding technology has attracted increasing attention as a strategy to remediate them. However, significant challenges remain that greatly inhibit the efficacy of such technologies, such as insufficient nutrients available for plants. Methods: For this study, we designed an experiment, which involved the addition of mineral-solubilizing microorganisms and R. pseudoacacia seedlings to the external-soil spray seeding (ESSS) substrate, and measured the soil nutrients, enzyme activities, and root growth of R. pseudoacacia. Results: First, the combination of certain mineral-solubilizing microorganisms with ESSS advanced its efficiency by increasing the availability of soil nutrients and soil enzymatic activities in association with R. pseudoacacia. Furthermore, the improvement of root growth of R. pseudoacacia was intimately related to soil nutrients, particularly for soil total nitrogen (TN) and total sulfur (TS). In general, the effects of the J2 (combined Bacillus thuringiensis and Gongronella butleri) treatment for soil nutrients, enzyme activities, and plant growth were the strongest. Conclusion: In summary, the results of our experiment revealed that these mineral-solubilizing microorganisms conveyed a promotional effect on R. pseudoacacia seedlings by increasing the soil nutrient content. These results provide basic data and microbial resources for the development and applications of mineral-solubilizing microorganisms for abandoned mine remediation.

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Claims 4

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combining certain mineral-solubilizing microorganisms with ESSS increases soil nutrient availability and soil enzyme activities in association with R. pseudoacacia.

Taxon
R. pseudoacaciaRobinia pseudoacaciae1
Treatment
combination of certain mineral-solubilizing microorganisms with ESSSe1
Interactor
mineral-solubilizing microorganismse1symbiont
Outcome
availability of soil nutrients and soil enzymatic activitiese1
Direction
increasinge1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Robinia pseudoacacia
Robinia pseudoacacia · TaxonAnnabell Hormann / korina.info · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Robinia pseudoacacia”

✓ located verbatim in the source · title, characters 135–155 · show in text ↑
e1

“the combination of certain mineral-solubilizing microorganisms with ESSS advanced its efficiency by increasing the availability of soil nutrients and soil enzymatic activities in association with R. pseudoacacia”

✓ located verbatim in the source · abstract, characters 676–887 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Root growth of R. pseudoacacia is intimately related to soil nutrients, particularly total nitrogen and total sulfur.

Taxon
R. pseudoacaciaRobinia pseudoacaciae2
Compound
total nitrogen (TN) and total sulfur (TS)e2
Outcome
root growthe2

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Robinia pseudoacacia
Robinia pseudoacacia · TaxonAnnabell Hormann / korina.info · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Robinia pseudoacacia”

✓ located verbatim in the source · title, characters 135–155 · show in text ↑
e2

“the improvement of root growth of R. pseudoacacia was intimately related to soil nutrients, particularly for soil total nitrogen (TN) and total sulfur (TS)”

✓ located verbatim in the source · abstract, characters 902–1057 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The J2 treatment (Bacillus thuringiensis with Gongronella butleri) gave the strongest effects on soil nutrients, enzyme activities and plant growth.

Taxon
Robinia pseudoacaciaRobinia pseudoacaciat0
Treatment
J2 (combined Bacillus thuringiensis and Gongronella butleri) treatmente3
Interactor
Bacillus thuringiensisBacillus thuringiensise3symbiont
Second interactor
Gongronella butleriGongronella butlerie3symbiont
Outcome
soil nutrients, enzyme activities, and plant growthe3
Direction
strongeste3

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Robinia pseudoacacia
Robinia pseudoacacia · TaxonAnnabell Hormann / korina.info · CC BY-SA 4.0 · Wikimedia Commons ↗
Bacillus thuringiensis
Bacillus thuringiensis · InteractorSam LaRussa · CC BY 4.0 · iNaturalist ↗
Gongronella butleri
Gongronella butleri · Second interactorZyGoLife Research Consortium · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Robinia pseudoacacia”

✓ located verbatim in the source · title, characters 135–155 · show in text ↑
e3

“the effects of the J2 (combined Bacillus thuringiensis and Gongronella butleri) treatment for soil nutrients, enzyme activities, and plant growth were the strongest”

✓ located verbatim in the source · abstract, characters 1071–1235 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mineral-solubilizing microorganisms promote R. pseudoacacia seedlings by increasing soil nutrient content.

Taxon
R. pseudoacaciaRobinia pseudoacaciae4
Treatment
mineral-solubilizing microorganismse4
Interactor
mineral-solubilizing microorganismse4symbiont
Outcome
soil nutrient contente4
Direction
increasinge4

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Robinia pseudoacacia
Robinia pseudoacacia · TaxonAnnabell Hormann / korina.info · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Robinia pseudoacacia”

✓ located verbatim in the source · title, characters 135–155 · show in text ↑
e4

“these mineral-solubilizing microorganisms conveyed a promotional effect on R. pseudoacacia seedlings by increasing the soil nutrient content”

✓ located verbatim in the source · abstract, characters 1305–1445 · show in text ↑

inoculation · nutrient: content · Robinia pseudoacacia (black locust)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

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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.