Abstract
1. The genus Vicia may be subdivided into groups of species characterized by associations of ninhydrin-positive compounds occurring in high concentrations in their seeds. Despite these subdivisions the overall distribution pattern emphasizes the unity of the genus and the possible value of such studies in establishing degrees of relationship between species within the genus. 2. Canavanine is a major constituent in the seeds of 17 species. 3. gamma-Hydroxyarginine, an amino acid that has not been found in other plant genera, occurs in 18 species. 4. gamma-Hydroxyornithine, a new natural amino acid, is found in two species. 5. A new naturally occurring ureido amino acid tentatively identified as ;gamma-hydroxycitrulline' is found in two species. 6. High concentrations of alphabeta-diaminopropionic acid are found in seed of V. baicalensis and of alphagamma-diaminobutyric acid in seed of V. aurantica. 7. The neurotoxic amino acid beta-cyanoalanine and its gamma-glutamyl peptide are found together in high concentrations in the seeds of 16 species of this agriculturally important genus. 8. Seven unidentified ninhydrin-positive compounds occur in high concentration (about 1% of the dry weight or more) in the seed of various species. Details of their R(F) values, ionic mobilities and colour reactions are given. 9. The total concentration of extractable ninhydrin-positive compounds varies little between seeds of different species and these compounds may, as has been suggested for those in Lathyrus, constitute a readily available form of storage nitrogen. 10. The nature and distribution, as opposed to the total concentration, of the amino acids and related compounds accumulated in the seeds of Vicia are different from those accumulated in the seeds of the related genus, Lathyrus. One particularly interesting difference is the accumulation of C(6) guanidino amino acids (arginine and gamma-hydroxyarginine) by Vicia and the accumulation of C(7) guanidino amino acids (homoarginine, gamma-hydroxyhomoarginine and the related amino acid lathyrine) by Lathyrus. Such differences afford a method for distinguishing between species of these genera.
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Claims 14
Claim · model-written summary
Vicia species can be subdivided into groups characterized by associations of ninhydrin-positive compounds in high concentrations in their seeds.
- Organ / stage
- seedse0
- Outcome
- groups of species characterized by associations of ninhydrin-positive compoundse0
ViciaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The genus Vicia may be subdivided into groups of species characterized by associations of ninhydrin-positive compounds occurring in high concentrations in their seeds”
Claim · model-written summary
Canavanine is a major constituent in the seeds of 17 Vicia species.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“species of Vicia”
e1“Canavanine is a major constituent in the seeds of 17 species”
Claim · model-written summary
gamma-Hydroxyarginine, an amino acid not found in other plant genera, occurs in 18 Vicia species.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“species of Vicia”
e1“gamma-Hydroxyarginine, an amino acid that has not been found in other plant genera, occurs in 18 species”
Claim · model-written summary
gamma-Hydroxyornithine, a new natural amino acid, is found in two Vicia species.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“species of Vicia”
e1“gamma-Hydroxyornithine, a new natural amino acid, is found in two species”
Claim · model-written summary
A new naturally occurring ureido amino acid, tentatively identified as gamma-hydroxycitrulline, is found in two Vicia species.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“species of Vicia”
e1“A new naturally occurring ureido amino acid tentatively identified as ;gamma-hydroxycitrulline' is found in two species”
Claim · model-written summary
High concentrations of alphabeta-diaminopropionic acid are found in seed of V. baicalensis.
- Taxon
- V. baicalensisVicia baicalensise0
- Organ / stage
- seede0
- Outcome
- High concentrations of alphabeta-diaminopropionic acide0
Verbatim
e0“High concentrations of alphabeta-diaminopropionic acid are found in seed of V. baicalensis”
Claim · model-written summary
alphagamma-Diaminobutyric acid is found in high concentration in seed of V. aurantica.
Verbatim
e0“alphagamma-diaminobutyric acid in seed of V. aurantica”
Claim · model-written summary
The neurotoxic amino acid beta-cyanoalanine and its gamma-glutamyl peptide are found together in high concentrations in the seeds of 16 Vicia species.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“species of Vicia”
e1“The neurotoxic amino acid beta-cyanoalanine and its gamma-glutamyl peptide are found together in high concentrations in the seeds of 16 species”
Claim · model-written summary
Seven unidentified ninhydrin-positive compounds occur in high concentration, about 1% of the dry weight or more, in seed of various Vicia species.
- Organ / stage
- seede1
- Outcome
- Seven unidentified ninhydrin-positive compoundse1
- Value
- about 1% of the dry weight or moree1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“species of Vicia”
e1“Seven unidentified ninhydrin-positive compounds occur in high concentration (about 1% of the dry weight or more) in the seed of various species”
Claim · model-written summary
The total concentration of extractable ninhydrin-positive compounds varies little between seeds of different Vicia species.
- Organ / stage
- seedse1
- Outcome
- total concentration of extractable ninhydrin-positive compoundse1
- Direction
- varies littlee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“species of Vicia”
e1“The total concentration of extractable ninhydrin-positive compounds varies little between seeds of different species”
Claim · model-written summary
The ninhydrin-positive compounds may constitute a readily available form of storage nitrogen, as suggested for those in Lathyrus.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“species of Vicia”
e1“these compounds may, as has been suggested for those in Lathyrus, constitute a readily available form of storage nitrogen”
Claim · model-written summary
The nature and distribution of amino acids and related compounds accumulated in Vicia seeds differ from those in seeds of the related genus Lathyrus.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nature and distribution, as opposed to the total concentration, of the amino acids and related compounds accumulated in the seeds of Vicia are different from those accumulated in the seeds of the related genus, Lathyrus”
Claim · model-written summary
Vicia accumulates C(6) guanidino amino acids (arginine and gamma-hydroxyarginine).
- Outcome
- accumulation of C(6) guanidino amino acids (arginine and gamma-hydroxyarginine)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the accumulation of C(6) guanidino amino acids (arginine and gamma-hydroxyarginine) by Vicia”
Claim · model-written summary
Lathyrus accumulates C(7) guanidino amino acids (homoarginine, gamma-hydroxyhomoarginine and lathyrine), unlike Vicia.
- Outcome
- accumulation of C(7) guanidino amino acids (homoarginine, gamma-hydroxyhomoarginine and the related amino acid lathyrine)e0
LathyrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the accumulation of C(7) guanidino amino acids (homoarginine, gamma-hydroxyhomoarginine and the related amino acid lathyrine) by Lathyrus”