Abstract
Soil bacteria are a new phytoremediation system for the removal of heavy metals from soils. In this study, fifteen soil bacteria were isolated from root nodules of lentil growing in heavy metals contaminated soils, particularly by lead. Molecular characterization of the collection showed a large diversity, including Agrobacterium tumefaciens, Rahnella aquatilis, Pseudomonas, and Rhizobium sp. These soil bacteria had a wide range of tolerance to heavy metals. Among them, strains of A. tumefaciens and R. aquatilis tolerated up to 3.35 mM Pb; whereas Pseudomonas tolerated up to 3.24 mM Pb. The inoculation of lentil grown hydroponically with inoculums formed by these efficient and Pb resistant bacteria enhanced plant biomass. The treatment of this symbiosis by 1 mM Pb for 10 days or by 2 mM Pb for 3 days demonstrated that lentil had Pb accumulation capacity and can be considered a Pb accumulator plant, elsewhere, roots accumulated more Pb than shoots, and the inoculation decreased the Pb up take by the plants, suggesting that this symbiosis should be investigated for use in phytostabilization of Pb-contaminated soils. At the same time, a modulation in the antioxidant enzyme activity and a specific duration was required for the induction of the superoxide dismutase (SOD), peroxidase (POX), and ascorbate peroxidase (APX) response and to adapt to Pb stress. These results suggested that these enzymes may be involved in the main mechanism of antioxidative defense in lentil exposed to Pb oxidative stress.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Fifteen soil bacteria isolated from lentil root nodules showed large molecular diversity, including Agrobacterium tumefaciens and Rahnella aquatilis.
- Taxon
- Lens culinaris
Lens culinarist0 - Organ / stage
- root nodulese1
- Interactor
- Agrobacterium tumefaciens
Agrobacterium tumefaciense2symbiont - Second interactor
- Rahnella aquatilis
Rahnella aquatilise2symbiont - Outcome
- large diversitye2
- Qualifier
- Pseudomonas, and Rhizobium sp.e2
- Setting
- heavy metals contaminated soilse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lens culinaris”
e1“fifteen soil bacteria were isolated from root nodules of lentil growing in heavy metals contaminated soils”
e2“Molecular characterization of the collection showed a large diversity, including Agrobacterium tumefaciens, Rahnella aquatilis, Pseudomonas, and Rhizobium sp.”
Claim · model-written summary
Agrobacterium tumefaciens strains tolerated up to 3.35 mM Pb.
- Taxon
- Lens culinarisLens culinarist0
- Interactor
- A. tumefaciensAgrobacterium tumefaciense1symbiont
- Outcome
- toleratede1
- Value
- 3.35 mM Pbe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lens culinaris”
e1“strains of A. tumefaciens and R. aquatilis tolerated up to 3.35 mM Pb”
Claim · model-written summary
Rahnella aquatilis strains tolerated up to 3.35 mM Pb.
- Taxon
- Lens culinarisLens culinarist0
- Interactor
- R. aquatilisRahnella aquatilise1symbiont
- Outcome
- toleratede1
- Value
- 3.35 mM Pbe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lens culinaris”
e1“strains of A. tumefaciens and R. aquatilis tolerated up to 3.35 mM Pb”
Claim · model-written summary
Pseudomonas strains tolerated up to 3.24 mM Pb.
- Taxon
- Lens culinarisLens culinarist0
- Interactor
- Pseudomonas
Pseudomonase1symbiont - Outcome
- toleratede1
- Value
- 3.24 mM Pbe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lens culinaris”
e1“whereas Pseudomonas tolerated up to 3.24 mM Pb”
Claim · model-written summary
Inoculation of hydroponically grown lentil with the Pb-resistant bacteria enhanced plant biomass.
- Taxon
- Lens culinarisLens culinarist0
- Treatment
- inoculums formed by these efficient and Pb resistant bacteriae1
- Interactor
- these efficient and Pb resistant bacteriae1symbiont
- Outcome
- plant biomasse1
- Direction
- enhancede1
- Setting
- grown hydroponicallye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lens culinaris”
e1“The inoculation of lentil grown hydroponically with inoculums formed by these efficient and Pb resistant bacteria enhanced plant biomass”
Claim · model-written summary
Lentil has Pb accumulation capacity and can be considered a Pb accumulator plant.
- Taxon
- Lens culinarisLens culinarist0
- Treatment
- 1 mM Pb for 10 days or by 2 mM Pb for 3 dayse1
- Outcome
- Pb accumulation capacitye1
- Qualifier
- can be considered a Pb accumulator plante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lens culinaris”
e1“The treatment of this symbiosis by 1 mM Pb for 10 days or by 2 mM Pb for 3 days demonstrated that lentil had Pb accumulation capacity and can be considered a Pb accumulator plant”
Claim · model-written summary
In lentil, roots accumulated more Pb than shoots.
- Taxon
- Lens culinarisLens culinarist0
- Organ / stage
- rootse1
- Outcome
- Pbe1
- Direction
- accumulated moree1
- Comparator
- shootse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lens culinaris”
e1“roots accumulated more Pb than shoots”
Claim · model-written summary
Inoculation decreased Pb uptake by lentil plants.
- Taxon
- Lens culinarisLens culinarist0
- Treatment
- inoculatione1
- Outcome
- Pb up takee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lens culinaris”
e1“the inoculation decreased the Pb up take by the plants”
Claim · model-written summary
A modulation in antioxidant enzyme activity was seen, and a specific duration was required for induction of SOD, POX and APX responses to Pb stress.
- Taxon
- Lens culinarisLens culinarist0
- Treatment
- Pb stresse1
- Outcome
- superoxide dismutase (SOD), peroxidase (POX), and ascorbate peroxidase (APX) responsee1
- Qualifier
- a specific duration was required for the inductione1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lens culinaris”
e1“a specific duration was required for the induction of the superoxide dismutase (SOD), peroxidase (POX), and ascorbate peroxidase (APX) response and to adapt to Pb stress”
Claim · model-written summary
The antioxidant enzymes may be involved in the main mechanism of antioxidative defense in lentil under Pb oxidative stress.
- Taxon
- Lens culinarisLens culinarist0
- Treatment
- Pb oxidative stresse1
- Outcome
- antioxidative defensee1
- Qualifier
- may be involved in the main mechanisme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lens culinaris”
e1“These results suggested that these enzymes may be involved in the main mechanism of antioxidative defense in lentil exposed to Pb oxidative stress”
The same questions in other papers
lead atom · growth · Lens culinaris (lentil)Positive and negative results
2 in the opposite direction
- negative
- no effect
inoculation · nutrient: content · Lens culinaris (lentil)Positive and negative results
18 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
16 papers more in this group
See all 20 papers →inoculation · growth · Lens culinaris (lentil)Positive and negative results
30 papers in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- no effect
32 papers more in this group
See all 36 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.