Abstract
The dipeptides glycylglycine (GlyGly) and glycylaspartic acid (GlyAsp) and amino acid glycine (Gly) in a concentration of 10–7 M in a medium essentially stimulate the growth and development of tobacco (Nicotiana tabacum) calli. GlyGly, GlyAsp, and Gly influence the cell differentiation and tissue formation processes. They stimulate formation and growth of leaves and roots. After incubation of tobacco seedling roots in the presence of 10–5 M fluorescent FITC-labeled peptides or glycine, marked fluorescence was observed in cells of the root cap and epidermis. The fluorescence was detected in the cell walls, cytoplasm, and nuclei. Thus, the peptides used can penetrate into the plant cell and be located in the nucleus and other cell compartments. Therefore, they may potentially interact with different structures and components of the cytoplasm and nucleus including various proteins, RNAs, and DNA. The penetration and accumulation of peptides in cells are tissue specific. In the tobacco callus, peptides modulate expression of the KNOX and GRF family genes that are responsible for cell differentiation and code for transcription factors. Thus, the dipeptides GlyGly and GlyAsp and amino acid Gly have marked physiological activity and can be related to efficient plant growth regulators.
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Claims 8
Claim · model-written summary
Glycylglycine, glycylaspartic acid and glycine at 10-7 M in the medium markedly stimulated growth and development of tobacco calli.
- Taxon
- tobacco (Nicotiana tabacum)
Nicotiana tabacume0 - Organ / stage
- callie0
- Treatment
- glycylglycine (GlyGly) and glycylaspartic acid (GlyAsp) and amino acid glycine (Gly) in a concentration of 10–7 Me0
- Outcome
- growth and developmente0
- Direction
- stimulatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tobacco (Nicotiana tabacum) Callus Culture”
e0“The dipeptides glycylglycine (GlyGly) and glycylaspartic acid (GlyAsp) and amino acid glycine (Gly) in a concentration of 10–7 M in a medium essentially stimulate the growth and development of tobacco (Nicotiana tabacum) calli”
Claim · model-written summary
GlyGly, GlyAsp and Gly influence cell differentiation and tissue formation in the tobacco callus.
- Taxon
- Tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- GlyGly, GlyAsp, and Glye0
- Outcome
- cell differentiation and tissue formation processese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tobacco (Nicotiana tabacum) Callus Culture”
e0“GlyGly, GlyAsp, and Gly influence the cell differentiation and tissue formation processes”
Claim · model-written summary
The peptides and glycine stimulate formation and growth of leaves and roots in the tobacco callus.
- Taxon
- Tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Organ / stage
- leaves and rootse0
- Outcome
- formation and growth of leaves and rootse0
- Direction
- stimulatee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tobacco (Nicotiana tabacum) Callus Culture”
e0“They stimulate formation and growth of leaves and roots”
Claim · model-written summary
After incubation of tobacco seedling roots with 10-5 M FITC-labeled peptides or glycine, marked fluorescence was observed in cells of the root cap and epidermis.
- Taxon
- tobaccoNicotiana tabacume0
- Organ / stage
- cells of the root cap and epidermise0
- Treatment
- 10–5 M fluorescent FITC-labeled peptides or glycinee0
- Outcome
- marked fluorescencee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After incubation of tobacco seedling roots in the presence of 10–5 M fluorescent FITC-labeled peptides or glycine, marked fluorescence was observed in cells of the root cap and epidermis”
Claim · model-written summary
The fluorescence was detected in the cell walls, cytoplasm and nuclei of tobacco root cells.
- Taxon
- Tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Organ / stage
- cell walls, cytoplasm, and nucleie0
- Outcome
- fluorescencee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tobacco (Nicotiana tabacum) Callus Culture”
e0“The fluorescence was detected in the cell walls, cytoplasm, and nuclei”
Claim · model-written summary
Penetration and accumulation of the peptides in cells are tissue specific.
- Taxon
- Tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Outcome
- penetration and accumulation of peptides in cellse0
- Qualifier
- tissue specifice0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tobacco (Nicotiana tabacum) Callus Culture”
e0“The penetration and accumulation of peptides in cells are tissue specific”
Claim · model-written summary
In tobacco callus the peptides modulate expression of the KNOX and GRF family genes.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- peptidese0
- Gene
- KNOX and GRF family genese0
- Outcome
- expression of the KNOX and GRF family genese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the tobacco callus, peptides modulate expression of the KNOX and GRF family genes”
Claim · model-written summary
The authors conclude that GlyGly, GlyAsp and Gly have marked physiological activity and can be related to efficient plant growth regulators.
- Taxon
- Tobacco (Nicotiana tabacum)Nicotiana tabacumt0
- Treatment
- GlyGly and GlyAsp and amino acid Glye0
- Outcome
- marked physiological activitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tobacco (Nicotiana tabacum) Callus Culture”
e0“the dipeptides GlyGly and GlyAsp and amino acid Gly have marked physiological activity and can be related to efficient plant growth regulators”
The same questions in other papers
glycine · growth · Nicotiana tabacum (tobacco)Results agree
1 paper in the same direction as this paper
- positive
glycylglycine · growth · Nicotiana tabacum (tobacco)Results agree
2 papers in the same direction as this paper
- positive
- positive
Gly-Asp · growth · Nicotiana tabacum (tobacco)Results agree
2 papers in the same direction as this paper
- positive
- positive
amino acid · growth · Nicotiana tabacum (tobacco)Results agree
3 papers in the same direction as this paper
- positive
- 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.