Abstract
It is well known that plant-growth-promoting rhizobacteria (PGPRs) increase the tolerance of plants to abiotic stresses; however, the counteraction of Al toxicity has received little attention. The effects of specially selected Al-tolerant and Al-immobilizing microorganisms were investigated using pea cultivar Sparkle and its Al-sensitive mutant E107 (brz). The strain Cupriavidus sp. D39 was the most-efficient in the growth promotion of hydroponically grown peas treated with 80 µM AlCl3, increasing the plant biomass of Sparkle by 20% and of E107 (brz) by two-times. This strain immobilized Al in the nutrient solution and decreased its concentration in E107 (brz) roots. The mutant showed upregulated exudation of organic acids, amino acids, and sugars in the absence or presence of Al as compared with Sparkle, and in most cases, the Al treatment stimulated exudation. Bacteria utilized root exudates and more actively colonized the root surface of E107 (brz). The exudation of tryptophan and the production of IAA by Cupriavidus sp. D39 in the root zone of the Al-treated mutant were observed. Aluminum disturbed the concentrations of nutrients in plants, but inoculation with Cupriavidus sp. D39 partially restored such negative effects. Thus, the E107 (brz) mutant is a useful tool for studying the mechanisms of plant–microbe interactions, and PGPR plays an important role in protecting plants against Al toxicity.
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Claims 11
Claim · model-written summary
Cupriavidus sp. D39 increased Sparkle pea biomass by 20% under 80 µM AlCl3.
- Taxon
- Pea
Lathyrus oleraceust0 - Material
- Sparklee0
- Treatment
- Cupriavidus sp. D39e0
- Interactor
- Cupriavidus sp. D39Cupriavidus sp. D39e0symbiont
- Outcome
- plant biomasse0
- Direction
- increasinge0
- Value
- 20%e0
- Qualifier
- 80 µM AlCl3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The strain Cupriavidus sp. D39 was the most-efficient in the growth promotion of hydroponically grown peas treated with 80 µM AlCl3, increasing the plant biomass of Sparkle by 20% and of E107 (brz) by two-times.”
t0“Pea”
Claim · model-written summary
Cupriavidus sp. D39 doubled E107 mutant pea biomass under 80 µM AlCl3.
- Taxon
- PeaLathyrus oleraceust0
- Material
- E107 (brz)e0
- Treatment
- Cupriavidus sp. D39e0
- Interactor
- Cupriavidus sp. D39Cupriavidus sp. D39e0symbiont
- Outcome
- plant biomasse0
- Direction
- increasinge0
- Value
- two-timese0
- Qualifier
- 80 µM AlCl3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The strain Cupriavidus sp. D39 was the most-efficient in the growth promotion of hydroponically grown peas treated with 80 µM AlCl3, increasing the plant biomass of Sparkle by 20% and of E107 (brz) by two-times.”
t0“Pea”
Claim · model-written summary
The bacterial strain immobilized aluminum in nutrient solution.
- Taxon
- PeaLathyrus oleraceust0
- Interactor
- Cupriavidus sp. D39Cupriavidus sp. D39e0symbiont
- Outcome
- Al in the nutrient solutione0
- Direction
- immobilizede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The strain Cupriavidus sp. D39 was the most-efficient in the growth promotion of hydroponically grown peas treated with 80 µM AlCl3, increasing the plant biomass of Sparkle by 20% and of E107 (brz) by two-times. This strain immobilized Al in the nutrient solution and decreased its concentration in E107 (brz) roots.”
t0“Pea”
Claim · model-written summary
The bacterial strain decreased aluminum concentration in E107 roots.
- Taxon
- PeaLathyrus oleraceust0
- Treatment
- This straine0
- Interactor
- Cupriavidus sp. D39Cupriavidus sp. D39e0symbiont
- Outcome
- concentration in E107 (brz) rootse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The strain Cupriavidus sp. D39 was the most-efficient in the growth promotion of hydroponically grown peas treated with 80 µM AlCl3, increasing the plant biomass of Sparkle by 20% and of E107 (brz) by two-times. This strain immobilized Al in the nutrient solution and decreased its concentration in E107 (brz) roots.”
t0“Pea”
Claim · model-written summary
The E107 mutant exuded more organic acids, amino acids and sugars than Sparkle.
- Taxon
- PeaLathyrus oleraceust0
- Material
- mutante0
- Outcome
- exudation of organic acids, amino acids, and sugarse0
- Direction
- upregulatede0
- Qualifier
- in the absence or presence of Ale0
- Comparator
- Sparklee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mutant showed upregulated exudation of organic acids, amino acids, and sugars in the absence or presence of Al as compared with Sparkle”
t0“Pea”
Claim · model-written summary
Aluminum treatment stimulated exudation in most cases.
- Taxon
- PeaLathyrus oleraceust0
- Treatment
- Al treatmente0
- Outcome
- exudatione0
- Direction
- stimulatede0
- Qualifier
- in most casese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in most cases, the Al treatment stimulated exudation.”
t0“Pea”
Claim · model-written summary
Bacteria utilized root exudates and colonized E107 roots more actively.
- Taxon
- PeaLathyrus oleraceust0
- Outcome
- root surfacee0
- Direction
- more actively colonizede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bacteria utilized root exudates and more actively colonized the root surface of E107 (brz).”
t0“Pea”
Claim · model-written summary
Tryptophan exudation occurred in the root zone of aluminum-treated E107.
- Taxon
- PeaLathyrus oleraceust0
- Organ / stage
- root zonee0
- Outcome
- exudation of tryptophane0
- Qualifier
- Al-treated mutante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The exudation of tryptophan and the production of IAA by Cupriavidus sp. D39 in the root zone of the Al-treated mutant were observed.”
t0“Pea”
Claim · model-written summary
Cupriavidus sp. D39 produced IAA in the aluminum-treated E107 root zone.
- Taxon
- PeaLathyrus oleraceust0
- Organ / stage
- root zonee0
- Interactor
- Cupriavidus sp. D39Cupriavidus sp. D39e0symbiont
- Outcome
- production of IAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The exudation of tryptophan and the production of IAA by Cupriavidus sp. D39 in the root zone of the Al-treated mutant were observed.”
t0“Pea”
Claim · model-written summary
Aluminum disturbed plant nutrient concentrations.
- Taxon
- PeaLathyrus oleraceust0
- Treatment
- Aluminume0
- Outcome
- concentrations of nutrientse0
- Direction
- disturbede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aluminum disturbed the concentrations of nutrients in plants”
t0“Pea”
Claim · model-written summary
Cupriavidus inoculation partly restored nutrient concentrations disturbed by aluminum.
- Taxon
- PeaLathyrus oleraceust0
- Treatment
- inoculation with Cupriavidus sp. D39e0
- Interactor
- Cupriavidus sp. D39Cupriavidus sp. D39e0symbiont
- Outcome
- concentrations of nutrientse0
- Direction
- partially restorede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aluminum disturbed the concentrations of nutrients in plants, but inoculation with Cupriavidus sp. D39 partially restored such negative effects.”
t0“Pea”
The same questions in other papers
aluminium atom · nutrient: content · Lathyrus oleraceus (pea)Results agree
3 papers in the same direction as this paper
- negative
- no effect
- negative
inoculation · nutrient: content · Lathyrus oleraceus (pea)Positive and negative results
36 papers in the same direction as this paper · 3 in the opposite direction
- positive
- negative
- no effect
36 papers more in this group
See all 40 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.