Abstract
Both aminoacyl‐tRNA and free amino acids were extracted from cotyledons of Pisum sativum L., cv. Greenfeast grown under either sulphur‐deficient or control conditions, at a stage of active synthesis and accumulation of storage proteins. Sulphur deficiency severely perturbed the composition of the free amino acid pool, causing a marked decrease in the relative level of cysteine but no change in methionine, as well as large increases in arginine, asparagine and other amino acids. On the other hand, the proportions of both sulphur and non‐sulphur amino acids in the aminoacyl‐tRNA pool were unaltered. This lack of a specific effect of the deficiency on the sulphur amino acids of the aminoacyl pool makes it unlikely that the altered pattern of storage protein synthesis and accumulation is due to unavailability of these amino acids.
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Claims 5
Claim · model-written summary
Sulphur deficiency decreased relative cysteine in the free amino acid pool.
- Taxon
- Pisum sativum L.
Lathyrus oleraceust0 - Treatment
- Sulphur deficiencye0
- Outcome
- relative level of cysteinee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulphur deficiency severely perturbed the composition of the free amino acid pool, causing a marked decrease in the relative level of cysteine but no change in methionine, as well as large increases in arginine, asparagine and other amino acids.”
t0“Pisum sativum L.”
Claim · model-written summary
Sulphur deficiency did not change methionine in the free amino acid pool.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- sulphur deficiencye1
- Outcome
- methioninee0
- Direction
- no changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no change in methionine”
t0“Pisum sativum L.”
e1“Sulphur deficiency severely perturbed the composition of the free amino acid pool”
Claim · model-written summary
Sulphur deficiency increased arginine, asparagine and other free amino acids.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- sulphur deficiencye1
- Outcome
- arginine, asparagine and other amino acidse0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“large increases in arginine, asparagine and other amino acids.”
t0“Pisum sativum L.”
e1“Sulphur deficiency severely perturbed the composition of the free amino acid pool”
Claim · model-written summary
Sulphur deficiency left aminoacyl-tRNA pool proportions of sulphur and non-sulphur amino acids unchanged.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- sulphur deficiencye1
- Outcome
- proportions of both sulphur and non‐sulphur amino acids in the aminoacyl‐tRNA poole0
- Direction
- unalterede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the proportions of both sulphur and non‐sulphur amino acids in the aminoacyl‐tRNA pool were unaltered.”
t0“Pisum sativum L.”
e1“Sulphur deficiency severely perturbed the composition of the free amino acid pool”
Claim · model-written summary
The authors judged unavailable sulphur amino acids in the aminoacyl pool unlikely to explain altered storage protein synthesis.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Outcome
- altered pattern of storage protein synthesis and accumulatione0
- Qualifier
- unavailability of these amino acidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This lack of a specific effect of the deficiency on the sulphur amino acids of the aminoacyl pool makes it unlikely that the altered pattern of storage protein synthesis and accumulation is due to unavailability of these amino acids.”
t0“Pisum sativum L.”
The same questions in other papers
sulfur atom · molecular: metabolites · Lathyrus oleraceus (pea)Results agree
2 papers in the same direction as this paper
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
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.