Abstract
During the current study, the effects of magnesium oxide nanoparticles (5 mmol/L) were observed on the growth and mineral nutrients of Daucus carota under lead (Pb) stress. The results demonstrated that Pb stress decreased the growth and photosynthetic rate of D. carota plants. Furthermore, Pb stressed plants showed decreased uptake of mineral nutrients including Zn, Na, Fe, K, Ca, Mg, K, and Cu. Similarly, Pb stressed plants showed enhanced electrolyte leakage (EL) and malondialdehyde (MDA) content. However, magnesium oxide nanoparticles detoxified ROS to mitigate Pb stress and improved the growth of plants. Magnesium oxide nanoparticles also escalated the activity of antioxidant enzymes including superoxide dismutase (SOD) and Catalase (CAT). A higher amount of Pb content was observed in the roots as compared to the shoot of plants. Lead toxicity reduced manganese accumulation in D. carota plants. The increased concentration of iron, manganese, copper, and zinc advocates stress the ameliorative role of Pb stress in plants. Novelty statementThe role of MgONPs in the alleviation of Pb-toxicity in Daucus carota has never been exploited. In addition, the potential of MgONPs to enhance nutritional content in D. carota via modulation in antioxidant system and polyamines have never been reported.
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Claims 10
Claim · model-written summary
Pb stress decreased the growth and photosynthetic rate of carrot.
- Taxon
- Daucus carota
Daucus carotat0 - Treatment
- Pb stresse0
- Outcome
- growth and photosynthetic ratee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Daucus carota”
e0“Pb stress decreased the growth and photosynthetic rate of D. carota plants”
Claim · model-written summary
Pb stress decreased the uptake of Zn, Na and Fe in carrot.
- Taxon
- Daucus carotaDaucus carotat0
- Treatment
- Pb stresse1
- Outcome
- uptake of mineral nutrientse1
- Direction
- decreasede1
- Qualifier
- Zn, Na, Fee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Daucus carota”
e1“Pb stressed plants showed decreased uptake of mineral nutrients including Zn, Na, Fe, K, Ca, Mg, K, and Cu”
Claim · model-written summary
Pb stress decreased the uptake of K, Ca and Mg in carrot.
- Taxon
- Daucus carotaDaucus carotat0
- Treatment
- Pb stresse1
- Outcome
- uptake of mineral nutrientse1
- Direction
- decreasede1
- Qualifier
- K, Ca, Mge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Daucus carota”
e1“Pb stressed plants showed decreased uptake of mineral nutrients including Zn, Na, Fe, K, Ca, Mg, K, and Cu”
Claim · model-written summary
Pb stress decreased the uptake of Cu in carrot.
- Taxon
- Daucus carotaDaucus carotat0
- Treatment
- Pb stresse1
- Outcome
- uptake of mineral nutrientse1
- Direction
- decreasede1
- Qualifier
- Cue1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Daucus carota”
e1“Pb stressed plants showed decreased uptake of mineral nutrients including Zn, Na, Fe, K, Ca, Mg, K, and Cu”
Claim · model-written summary
Pb stress enhanced electrolyte leakage and malondialdehyde content in carrot.
- Taxon
- Daucus carotaDaucus carotat0
- Treatment
- Pb stresse4
- Outcome
- electrolyte leakage (EL) and malondialdehyde (MDA) contente4
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Daucus carota”
e4“Pb stressed plants showed enhanced electrolyte leakage (EL) and malondialdehyde (MDA) content”
Claim · model-written summary
Magnesium oxide nanoparticles improved the growth of Pb-stressed carrot plants.
- Taxon
- Daucus carotaDaucus carotat0
- Treatment
- magnesium oxide nanoparticlese2
- Outcome
- growth of plantse2
- Direction
- improvede2
- Qualifier
- mitigate Pb stresse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Daucus carota”
e2“magnesium oxide nanoparticles detoxified ROS to mitigate Pb stress and improved the growth of plants”
Claim · model-written summary
Magnesium oxide nanoparticles escalated the activity of superoxide dismutase and catalase in carrot.
- Taxon
- Daucus carotaDaucus carotat0
- Treatment
- Magnesium oxide nanoparticlese3
- Gene
- superoxide dismutase (SOD) and Catalase (CAT)e3
- Outcome
- activity of antioxidant enzymese3
- Direction
- escalatede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Daucus carota”
e3“Magnesium oxide nanoparticles also escalated the activity of antioxidant enzymes including superoxide dismutase (SOD) and Catalase (CAT)”
Claim · model-written summary
Carrot roots contained more Pb than shoots.
- Taxon
- Daucus carotaDaucus carotat0
- Organ / stage
- rootse5
- Outcome
- Pb contente5
- Direction
- highere5
- Comparator
- shoote5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Daucus carota”
e5“A higher amount of Pb content was observed in the roots as compared to the shoot of plants”
Claim · model-written summary
Lead toxicity reduced manganese accumulation in carrot.
- Taxon
- Daucus carotaDaucus carotat0
- Treatment
- Lead toxicitye6
- Outcome
- manganese accumulatione6
- Direction
- reducede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Daucus carota”
e6“Lead toxicity reduced manganese accumulation in D. carota plants”
Claim · model-written summary
Pb stress increased the concentration of iron, manganese, copper and zinc, which the authors interpret as an ameliorative role of Pb stress.
- Taxon
- Daucus carotaDaucus carotat0
- Treatment
- Pb stresse7
- Outcome
- concentration of iron, manganese, copper, and zince7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Daucus carota”
e7“The increased concentration of iron, manganese, copper, and zinc advocates stress the ameliorative role of Pb stress in plants”
The same questions in other papers
lead atom · physiology: photosynthesis · Daucus carota (carrot)Results agree
1 paper in the same direction as this paper
- negative
heavy metal · molecular: metabolites · Daucus carota (carrot)Positive and negative results
1 in the opposite direction
- negative
nanoparticle · growth · Daucus carota (carrot)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.