Abstract
Acidic auxin in tomato fruit at various developmental stages was examined by paper chromatography and Avena curvature test. Auxin activity of the fruit extracts was detected only in the same Rf zone as that of authentic IAA with four solvent systems, i.e., isopropanol-ammonium hydroxide-water 10:1:1 v/v, n-butanol-ammonium hydroxide-water 25:1:5 v/v, ethanol-water 7:3 v/v and n-butanol-acetic acid-water 4:1:1 v/v. Auxin content of fruit was the highest on the seventh day after anthesis, when the two-celled proembryo began to grow rapidly and the endosperm consisted of multi-cells. The second peak of auxin activity occurred on the 30th day, when the embryo, which consisted of the cotyledons, hypocotyl, and radicle, finished its most rapid growth. No auxin activity was detected in the ripe fruit. Auxin contents in fruit on the fifth, seventh, and tenth days after anthesis were lowered by a 4 hr high temperature treatment at 40° given 0–3 days after anthesis. The nature of tomato auxin and its possible role in the fruit development were discussed.
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Claims 5
Claim · model-written summary
Tomato fruit extract auxin activity appeared only in the chromatographic zone of authentic IAA.
- Taxon
- TOMATO
Solanum lycopersicumt0 - Outcome
- Auxin activity of the fruit extractse0
- Comparator
- authentic IAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Auxin activity of the fruit extracts was detected only in the same Rf zone as that of authentic IAA with four solvent systems”
t0“TOMATO FRUIT”
Claim · model-written summary
Tomato fruit auxin content was highest on day seven after anthesis.
- Taxon
- TOMATOSolanum lycopersicumt0
- Organ / stage
- seventh day after anthesise0
- Outcome
- Auxin content of fruite0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Auxin content of fruit was the highest on the seventh day after anthesis”
t0“TOMATO FRUIT”
Claim · model-written summary
A second tomato fruit auxin activity peak occurred on day 30.
- Taxon
- TOMATOSolanum lycopersicumt0
- Organ / stage
- 30th daye0
- Outcome
- second peak of auxin activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The second peak of auxin activity occurred on the 30th day”
t0“TOMATO FRUIT”
Claim · model-written summary
Ripe tomato fruit had no detectable auxin activity.
- Taxon
- TOMATOSolanum lycopersicumt0
- Organ / stage
- ripe fruite0
- Outcome
- No auxin activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No auxin activity was detected in the ripe fruit.”
t0“TOMATO FRUIT”
Claim · model-written summary
A four-hour 40° treatment lowered auxin content in tomato fruit on days five, seven and ten after anthesis.
- Taxon
- TOMATOSolanum lycopersicumt0
- Organ / stage
- fifth, seventh, and tenth days after anthesise0
- Treatment
- 4 hr high temperature treatment at 40°e0
- Outcome
- Auxin contents in fruite0
- Direction
- lowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Auxin contents in fruit on the fifth, seventh, and tenth days after anthesis were lowered by a 4 hr high temperature treatment at 40° given 0–3 days after anthesis.”
t0“TOMATO FRUIT”
The same questions in other papers
heat · physiology: hormones · Solanum lycopersicum (tomato)Positive and negative results
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- positive
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See all 7 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.