Abstract
N-malonyl-D-tryptophan (MT) and D-tryptophan added to the medium instead of auxin stimulated growth of soybean and tomato cell and tissue cultures. Effects of 50–100 μmol 1-1 MT and 100 –300 μmol 1-1 D-tryptophan were equal to the effect of 3–10 μmol 1-1 IAA. Soybean cells grown in the presence of 100 μmol 1-1 MT contained 125–170 ng IAA per 1 g fresh mass (as determined by spectrofluorimetric indole-α-pyrone method), whereas the cells grown in the presence of NAA 10. 7 μmol 1-1 contained 50 –60 ng IAA and the cells grown in the absence of auxin failed to show endogenous IAA. MT as proposed can be hydrolyzed by plant cells with liberation of D-tryptophan, which in turn can be used in IAA synthesis. It is proposed that MT is a possible source of endogenous auxin in plants.
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Claims 10
Claim · model-written summary
N-malonyl-D-tryptophan stimulated growth of soybean cultures.
- Taxon
- soybean
Glycine maxe0 - Organ / stage
- cell and tissue culturese0
- Treatment
- N-malonyl-D-tryptophan (MT)e0
- Outcome
- growthe0
- Direction
- stimulatede0
- Comparator
- auxine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N-malonyl-D-tryptophan (MT) and D-tryptophan added to the medium instead of auxin stimulated growth of soybean and tomato cell and tissue cultures.”
Claim · model-written summary
N-malonyl-D-tryptophan stimulated growth of tomato cultures.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- cell and tissue culturese0
- Treatment
- N-malonyl-D-tryptophan (MT)e0
- Outcome
- growthe0
- Direction
- stimulatede0
- Comparator
- auxine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N-malonyl-D-tryptophan (MT) and D-tryptophan added to the medium instead of auxin stimulated growth of soybean and tomato cell and tissue cultures.”
Claim · model-written summary
D-tryptophan stimulated growth of soybean cultures.
- Taxon
- soybeanGlycine maxe0
- Treatment
- D-tryptophane0
- Outcome
- growthe0
- Direction
- stimulatede0
- Comparator
- auxine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N-malonyl-D-tryptophan (MT) and D-tryptophan added to the medium instead of auxin stimulated growth of soybean and tomato cell and tissue cultures.”
Claim · model-written summary
D-tryptophan stimulated growth of tomato cultures.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- D-tryptophane0
- Outcome
- growthe0
- Direction
- stimulatede0
- Comparator
- auxine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N-malonyl-D-tryptophan (MT) and D-tryptophan added to the medium instead of auxin stimulated growth of soybean and tomato cell and tissue cultures.”
Claim · model-written summary
The MT dose had a growth effect equal to IAA.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 50–100 μmol 1-1 MTe0
- Outcome
- Effectse0
- Direction
- equale0
- Comparator
- 3–10 μmol 1-1 IAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“growth of soybean and tomato cell and tissue cultures”
e0“Effects of 50–100 μmol 1-1 MT and 100 –300 μmol 1-1 D-tryptophan were equal to the effect of 3–10 μmol 1-1 IAA.”
Claim · model-written summary
The D-tryptophan dose had a growth effect equal to IAA.
- Taxon
- soybeanGlycine maxe1
- Treatment
- 100 –300 μmol 1-1 D-tryptophane0
- Outcome
- Effectse0
- Direction
- equale0
- Comparator
- 3–10 μmol 1-1 IAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of 50–100 μmol 1-1 MT and 100 –300 μmol 1-1 D-tryptophan were equal to the effect of 3–10 μmol 1-1 IAA.”
e1“growth of soybean and tomato cell and tissue cultures”
Claim · model-written summary
Soybean cells grown with MT contained 125–170 ng IAA per 1 g fresh mass.
- Taxon
- SoybeanGlycine maxe0
- Organ / stage
- cellse0
- Treatment
- 100 μmol 1-1 MTe0
- Outcome
- IAAe0
- Value
- 125–170 ng IAA per 1 g fresh masse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean cells grown in the presence of 100 μmol 1-1 MT contained 125–170 ng IAA per 1 g fresh mass”
Claim · model-written summary
Soybean cells grown with NAA contained 50–60 ng IAA.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- NAA 10. 7 μmol 1-1e0
- Outcome
- IAAe0
- Value
- 50 –60 ng IAAe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cells grown in the presence of NAA 10. 7 μmol 1-1 contained 50 –60 ng IAA”
e1“Soybean cells grown in the presence of 100 μmol 1-1 MT contained 125–170 ng IAA per 1 g fresh mass”
Claim · model-written summary
Soybean cells grown without auxin had no detectable endogenous IAA.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- absence of auxine0
- Outcome
- endogenous IAAe0
- Direction
- failed to showe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cells grown in the absence of auxin failed to show endogenous IAA”
e1“Soybean cells grown in the presence of 100 μmol 1-1 MT contained 125–170 ng IAA per 1 g fresh mass”
Claim · model-written summary
The authors proposed that MT could supply endogenous auxin after hydrolysis to D-tryptophan and IAA synthesis.
- Taxon
- plantsViridiplantaee1
- Compound
- MTe0
- Outcome
- endogenous auxine1
- Qualifier
- hydrolyzed by plant cells with liberation of D-tryptophane0
Verbatim
e0“MT as proposed can be hydrolyzed by plant cells with liberation of D-tryptophan, which in turn can be used in IAA synthesis.”
e1“It is proposed that MT is a possible source of endogenous auxin in plants.”
The same questions in other papers
class · molecular: metabolites · Glycine max (soybean)Positive and negative results
3 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
11 papers more in this group
See all 15 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.