Paper · 2002 · PubMed

Effect of manganese toxicity on pigment content, Hill activity and photosynthetic rate of Vigna radiata L. Wilczek seedlings.

Suchita Sinha; S Mukherji; Jayanta Dutta

6
claims
10
verbatim quotes
14
citations
1
research areas
—
Not open access

Abstract

Effect of different concentrations, viz. 10(-4) M, 5 x 10(-4) M, 10(-3) M and 5 x 10(-3) M of manganese sulphate (MnSO4, 7H2O) on chlorophyll, carotenoid pigment content and photosynthesis of mungbean seedlings was examined Progressive increase in manganese sulphate concentration upto 5 x 10(-3) M brought about a progressive decrease in total chlorophyll and chl a content. Chl b content changed very little by excess manganese treatment. Total carotenoid pigment content decreased considerably in comparison to control with every concentration of manganese sulphate tried here. Hill activity of chloroplasts isolated from leaves of mungbean seedling and rate of photosynthesis in terms of CO2 uptake showed progressive reduction along with the increase in concentration of the manganese.

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Claims 6

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Total chlorophyll declined progressively as manganese sulphate increased to 5 x 10(-3) M.

Taxon
mungbean seedlingsVigna radiatae1
Treatment
manganese sulphate concentration upto 5 x 10(-3) Me0
Outcome
total chlorophylle0
Direction
decreasee0

Not reportedComparator

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Progressive increase in manganese sulphate concentration upto 5 x 10(-3) M brought about a progressive decrease in total chlorophyll and chl a content”

✓ located verbatim in the source · abstract, characters 224–374 · show in text ↑
e1

“mungbean seedlings”

✓ located verbatim in the source · abstract, characters 192–210 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Chlorophyll a declined progressively as manganese sulphate increased.

Taxon
mungbean seedlingsVigna radiatae1
Treatment
manganese sulphate concentration upto 5 x 10(-3) Me0
Outcome
chl a contente0
Direction
decreasee0

Not reportedComparator

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Progressive increase in manganese sulphate concentration upto 5 x 10(-3) M brought about a progressive decrease in total chlorophyll and chl a content”

✓ located verbatim in the source · abstract, characters 224–374 · show in text ↑
e1

“mungbean seedlings”

✓ located verbatim in the source · abstract, characters 192–210 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Excess manganese changed chlorophyll b content very little.

Taxon
mungbean seedlingsVigna radiatae1
Treatment
excess manganese treatmente0
Outcome
Chl b contente0
Direction
changed very littlee0

Not reportedComparator

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Chl b content changed very little by excess manganese treatment”

✓ located verbatim in the source · abstract, characters 376–439 · show in text ↑
e1

“mungbean seedlings”

✓ located verbatim in the source · abstract, characters 192–210 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Every manganese sulphate concentration reduced total carotenoid pigment content relative to control.

Taxon
mungbean seedlingsVigna radiatae1
Treatment
every concentration of manganese sulphatee0
Outcome
Total carotenoid pigment contente0
Direction
decreasede0
Comparator
controle0

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Total carotenoid pigment content decreased considerably in comparison to control with every concentration of manganese sulphate tried here”

✓ located verbatim in the source · abstract, characters 441–579 · show in text ↑
e1

“mungbean seedlings”

✓ located verbatim in the source · abstract, characters 192–210 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Hill activity of mungbean chloroplasts declined progressively with increasing manganese.

Taxon
mungbean seedlingVigna radiatae0
Treatment
increase in concentration of the manganesee0
Outcome
Hill activity of chloroplastse0
Direction
progressive reductione0

Not reportedComparator

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Hill activity of chloroplasts isolated from leaves of mungbean seedling and rate of photosynthesis in terms of CO2 uptake showed progressive reduction along with the increase in concentration of the manganese”

✓ located verbatim in the source · abstract, characters 581–789 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Photosynthetic CO2 uptake declined progressively with increasing manganese.

Taxon
mungbean seedlingVigna radiatae0
Treatment
increase in concentration of the manganesee0
Outcome
rate of photosynthesis in terms of CO2 uptakee0
Direction
progressive reductione0

Not reportedComparator

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Hill activity of chloroplasts isolated from leaves of mungbean seedling and rate of photosynthesis in terms of CO2 uptake showed progressive reduction along with the increase in concentration of the manganese”

✓ located verbatim in the source · abstract, characters 581–789 · show in text ↑

manganese atom · physiology: photosynthesis · Vigna radiata (mung bean)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. positive
See all 2 papers →

manganese atom · nutrient: content · Vigna radiata (mung bean)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

2 in the opposite direction

  1. positive
  2. positive
See all 3 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.