Abstract
The present study evaluated the influence of melatonin (MEL) on copper toxicity in terms of morphophysiological, microscopic, histochemical, and stress resilience responses in Brassica juncea . Different levels of Cu (0, 30, and 60 mg kg –1 ) were given in air-dried soil, and 25 days after sowing (DAS), plants were sprayed with 30, 40, or 50 μM of MEL. The results demonstrated that under Cu stress, a significant amount of Cu accumulated in plant tissues, particularly in roots than in upper ground tissues, thereby suppressing the overall growth as evidenced by decrease in tolerance index and photosynthesis and increase in oxidative stress biomarkers (reactive oxygen species, malondialdehyde, and electrolyte leakage content) and cell death. Interestingly, the follow-up treatment of MEL, mainly 40 μM, efficiently improved the physio-biochemical and growth parameters, sugar accumulation, and metabolism. The potential of MEL in modulating Cu stress is attributed to its involvement in enriching the level of nutrient and improving chloroplast and stomatal organization besides lowering oxidative stress via enhanced levels of antioxidants. MEL improved the Cu reclamation potential in plants by enhancing Cu uptake and its translocation to aerial tissues. Principal component analysis showed that most of the morphophysiological and growth attributes were positively linked with MEL and negatively related to Cu levels, whereas all the stress-enhancing attributes showed a strong relationship with excessive Cu levels in soils. The present study suggested that MEL has the potential to improve growth and photosynthesis resulting in improved stress resilience under Cu stress along with increased remediation capability of mustard for remediation of Cu-contaminated soils.
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Claims 8
Claim · model-written summary
Under Cu stress, Cu accumulated in Brassica juncea tissues, particularly more in roots than in upper ground tissues.
- Taxon
- Brassica juncea
Brassica junceat0 - Organ / stage
- rootse1
- Treatment
- Cu stresse1
- Outcome
- Cu accumulated in plant tissuese1
- Comparator
- upper ground tissuese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e1“under Cu stress, a significant amount of Cu accumulated in plant tissues, particularly in roots than in upper ground tissues, thereby suppressing the overall growth as evidenced by decrease in tolerance index and photosynthesis”
Claim · model-written summary
Cu stress decreased the tolerance index and photosynthesis of Brassica juncea, suppressing overall growth.
- Taxon
- Brassica junceaBrassica junceat0
- Treatment
- Cu stresse1
- Outcome
- tolerance index and photosynthesise1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e1“under Cu stress, a significant amount of Cu accumulated in plant tissues, particularly in roots than in upper ground tissues, thereby suppressing the overall growth as evidenced by decrease in tolerance index and photosynthesis”
Claim · model-written summary
Cu stress increased oxidative stress biomarkers and cell death in Brassica juncea.
- Taxon
- Brassica junceaBrassica junceat0
- Treatment
- Cu stresse2
- Outcome
- oxidative stress biomarkers (reactive oxygen species, malondialdehyde, and electrolyte leakage content) and cell deathe3
- Direction
- increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e2“demonstrated that under Cu stress”
e3“increase in oxidative stress biomarkers (reactive oxygen species, malondialdehyde, and electrolyte leakage content) and cell death”
Claim · model-written summary
Follow-up melatonin treatment, mainly 40 μM, improved physio-biochemical and growth parameters, sugar accumulation and metabolism of Brassica juncea.
- Taxon
- Brassica junceaBrassica junceat0
- Treatment
- MEL, mainly 40 μMe1
- Outcome
- physio-biochemical and growth parameters, sugar accumulation, and metabolisme1
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e1“the follow-up treatment of MEL, mainly 40 μM, efficiently improved the physio-biochemical and growth parameters, sugar accumulation, and metabolism”
Claim · model-written summary
Melatonin enhanced Cu uptake and its translocation to aerial tissues of Brassica juncea.
- Taxon
- Brassica junceaBrassica junceat0
- Treatment
- MELe1
- Outcome
- Cu uptake and its translocation to aerial tissuese1
- Direction
- enhancinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e1“MEL improved the Cu reclamation potential in plants by enhancing Cu uptake and its translocation to aerial tissues”
Claim · model-written summary
Morphophysiological and growth attributes of Brassica juncea were positively linked with melatonin and negatively related to Cu levels.
- Taxon
- Brassica junceaBrassica junceat0
- Treatment
- MELe1
- Outcome
- morphophysiological and growth attributese1
- Direction
- increaseinferrede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e1“Principal component analysis showed that most of the morphophysiological and growth attributes were positively linked with MEL and negatively related to Cu levels”
Claim · model-written summary
Melatonin has the potential to improve growth and photosynthesis and to increase the remediation capability of Brassica juncea under Cu stress.
- Taxon
- Brassica junceaBrassica junceat0
- Treatment
- MELe1
- Outcome
- remediation capabilitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e1“The present study suggested that MEL has the potential to improve growth and photosynthesis resulting in improved stress resilience under Cu stress along with increased remediation capability of mustard”
Claim · model-written summary
Melatonin modulates Cu stress in Brassica juncea by enriching nutrient levels, improving chloroplast and stomatal organization and lowering oxidative stress through enhanced antioxidants.
- Taxon
- Brassica junceaBrassica junceat0
- Treatment
- MELe1
- Outcome
- modulating Cu stresse1
- Qualifier
- enriching the level of nutrient and improving chloroplast and stomatal organization besides lowering oxidative stress via enhanced levels of antioxidantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e1“The potential of MEL in modulating Cu stress is attributed to its involvement in enriching the level of nutrient and improving chloroplast and stomatal organization besides lowering oxidative stress via enhanced levels of antioxidants”
The same questions in other papers
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- positive
- negative
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2 papers more in this group
See all 6 papers →heavy metal · physiology: oxidative · Brassica juncea (Indian mustard)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.