Abstract
The objective of this study was to evaluate the effects of cobalt (Co) and molybdenum (Mo) doses in the treatment of seeds on the biosynthesis of nitrogen compounds, photosynthetic pigments, sugars, and production of peanut plants. The doses of Co and Mo used were 0, 2, 3, and 4 mL kg−1 seed, which were applied immediately before sowing. Seeds treated with Co and Mo at a dose of 4 mL kg−1 yielded peanut plants with higher concentrations of photosynthetic pigments, carotenoids, and sucrose in leaves. Application of Co and Mo doses also increased biological nitrogen fixation by increasing the concentration of allantoic acid, nitrate, ammonia, and amino acids in leaves. The concentration of total amino acids corresponded to most of the nitrogen compounds (on average 50%), followed by the concentrations of nitrate (35%), ammonia (11%), allantoic acid (7%), and allantoin (0.2%). Application of 4 mL kg−1 increased the production of total amino acids compared with the control treatment. Pod yield was not affected by the Co and Mo doses; however, treatment of peanut seeds with 4 mL kg−1 was the most viable alternative for increased production of primary metabolism compounds, nitrogen forms, and photosynthetic pigments in peanut plants. This study provides important information regarding the role of Co and Mo in the biological nitrogen fixation of peanut plants. Future experiments should be conducted using a dose of 4 mL kg−1 with different genotypes to verify the potential for increasing peanut yield.
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Claims 14
Claim · model-written summary
A 4 mL kg−1 seed treatment raised leaf photosynthetic pigments and carotenoids.
- Taxon
- peanut plants
Arachis hypogaeae0 - Organ / stage
- leavese0
- Treatment
- Co and Mo at a dose of 4 mL kg−1e0
- Outcome
- photosynthetic pigments, carotenoidse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Seeds treated with Co and Mo at a dose of 4 mL kg−1 yielded peanut plants with higher concentrations of photosynthetic pigments, carotenoids, and sucrose in leaves.”
Claim · model-written summary
A 4 mL kg−1 seed treatment raised leaf sucrose.
- Taxon
- peanut plants
Arachis hypogaeae0 - Treatment
- Co and Mo at a dose of 4 mL kg−1e0
- Outcome
- sucrose in leavese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Seeds treated with Co and Mo at a dose of 4 mL kg−1 yielded peanut plants with higher concentrations of photosynthetic pigments, carotenoids, and sucrose in leaves.”
Claim · model-written summary
Co and Mo doses increased biological nitrogen fixation.
- Taxon
- peanut plants
Arachis hypogaeat0 - Treatment
- Co and Mo dosese0
- Outcome
- biological nitrogen fixatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Application of Co and Mo doses also increased biological nitrogen fixation by increasing the concentration of allantoic acid, nitrate, ammonia, and amino acids in leaves.”
t0“peanut plants (Arachis hypogaea L.)”
Claim · model-written summary
Co and Mo doses increased leaf allantoic acid and nitrate concentrations.
- Taxon
- peanut plants
Arachis hypogaeat0 - Treatment
- Co and Mo dosese0
- Outcome
- concentration of allantoic acid, nitratee0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Application of Co and Mo doses also increased biological nitrogen fixation by increasing the concentration of allantoic acid, nitrate, ammonia, and amino acids in leaves.”
t0“peanut plants (Arachis hypogaea L.)”
Claim · model-written summary
Co and Mo doses increased leaf ammonia and amino acid concentrations.
- Taxon
- peanut plants
Arachis hypogaeat0 - Treatment
- Co and Mo dosese0
- Outcome
- ammonia, and amino acids in leavese0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Application of Co and Mo doses also increased biological nitrogen fixation by increasing the concentration of allantoic acid, nitrate, ammonia, and amino acids in leaves.”
t0“peanut plants (Arachis hypogaea L.)”
Claim · model-written summary
Total amino acids accounted for an average 50% of nitrogen compounds.
- Taxon
- peanut plants
Arachis hypogaeat0 - Outcome
- total amino acidse0
- Value
- 50%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The concentration of total amino acids corresponded to most of the nitrogen compounds (on average 50%)”
t0“peanut plants (Arachis hypogaea L.)”
Claim · model-written summary
Nitrate accounted for 35% of nitrogen compounds.
- Taxon
- peanut plants
Arachis hypogaeat0 - Outcome
- nitratee0
- Value
- 35%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“followed by the concentrations of nitrate (35%), ammonia (11%), allantoic acid (7%), and allantoin (0.2%).”
t0“peanut plants (Arachis hypogaea L.)”
Claim · model-written summary
Ammonia accounted for 11% of nitrogen compounds.
- Taxon
- peanut plants
Arachis hypogaeat0 - Outcome
- ammoniae0
- Value
- 11%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“followed by the concentrations of nitrate (35%), ammonia (11%), allantoic acid (7%), and allantoin (0.2%).”
t0“peanut plants (Arachis hypogaea L.)”
Claim · model-written summary
Allantoic acid accounted for 7% of nitrogen compounds.
- Taxon
- peanut plants
Arachis hypogaeat0 - Outcome
- allantoic acide0
- Value
- 7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“followed by the concentrations of nitrate (35%), ammonia (11%), allantoic acid (7%), and allantoin (0.2%).”
t0“peanut plants (Arachis hypogaea L.)”
Claim · model-written summary
Allantoin accounted for 0.2% of nitrogen compounds.
- Taxon
- peanut plants
Arachis hypogaeat0 - Outcome
- allantoine0
- Value
- 0.2%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“followed by the concentrations of nitrate (35%), ammonia (11%), allantoic acid (7%), and allantoin (0.2%).”
t0“peanut plants (Arachis hypogaea L.)”
Claim · model-written summary
A 4 mL kg−1 dose increased total amino acid production versus control.
- Taxon
- peanut plants
Arachis hypogaeat0 - Treatment
- 4 mL kg−1e0
- Outcome
- production of total amino acidse0
- Direction
- increasede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Application of 4 mL kg−1 increased the production of total amino acids compared with the control treatment.”
t0“peanut plants (Arachis hypogaea L.)”
Claim · model-written summary
Co and Mo doses did not affect pod yield.
- Taxon
- peanut plants
Arachis hypogaeat0 - Treatment
- Co and Mo dosese0
- Outcome
- Pod yielde0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Pod yield was not affected by the Co and Mo doses”
t0“peanut plants (Arachis hypogaea L.)”
Claim · model-written summary
The authors considered 4 mL kg−1 seed treatment the most viable option to raise metabolism compounds, nitrogen forms, and pigments.
- Taxon
- peanut plants
Arachis hypogaeae0 - Outcome
- treatment of peanut seeds with 4 mL kg−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“treatment of peanut seeds with 4 mL kg−1 was the most viable alternative for increased production of primary metabolism compounds, nitrogen forms, and photosynthetic pigments in peanut plants.”
Claim · model-written summary
The authors recommended testing 4 mL kg−1 across genotypes for yield potential.
- Taxon
- peanut
Arachis hypogaeae0 - Outcome
- Future experiments should be conducted using a dose of 4 mL kg−1 with different genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Future experiments should be conducted using a dose of 4 mL kg−1 with different genotypes to verify the potential for increasing peanut yield.”
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