Abstract
Abstract The auxin content (extractable and ‘diffusible’ auxin) of non‐sterile corn plants is much more increased by a tryptophan application than the auxin content of sterile plants. This effect is independent of the mode of tryptophan application (spray or supply with the transpiration stream). The epiphytic bacteria settling the shoot surface are responsible for this effect, since in special experiments the rhizosphere was separated from the tryptophan treatment. Sterilized plants which were artificially reinfected with epiphytic IAA‐producing bacteria strains behave like non‐sterile plants. Non‐sterile plants which were superinfected with these bacteria strains have a still higher capacity to convert tryptophan to auxin.
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Claims 5
Claim · model-written summary
Tryptophan application much more increased the auxin content of non-sterile corn plants than that of sterile corn plants.
- Taxon
- corn plants
Zea mays subsp. mayse0 - Treatment
- tryptophan applicatione0
- Outcome
- auxin contente0
- Direction
- much more increasede0
- Comparator
- sterile plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The auxin content (extractable and ‘diffusible’ auxin) of non‐sterile corn plants is much more increased by a tryptophan application than the auxin content of sterile plants”
Claim · model-written summary
The tryptophan effect on corn auxin content is independent of whether tryptophan is sprayed or supplied with the transpiration stream.
- Taxon
- corn plantsZea mays subsp. mayse0
- Treatment
- spray or supply with the transpiration streame1
- Outcome
- auxin contente0
- Qualifier
- independent of the mode of tryptophan applicatione1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The auxin content (extractable and ‘diffusible’ auxin) of non‐sterile corn plants is much more increased by a tryptophan application than the auxin content of sterile plants”
e1“This effect is independent of the mode of tryptophan application (spray or supply with the transpiration stream)”
Claim · model-written summary
Epiphytic bacteria settling the shoot surface of corn are responsible for the increased auxin content after tryptophan application.
- Taxon
- corn plantsZea mays subsp. mayse0
- Organ / stage
- shoot surfacee2
- Interactor
- epiphytic bacteriae2other
- Outcome
- auxin contente0
- Qualifier
- rhizosphere was separated from the tryptophan treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The auxin content (extractable and ‘diffusible’ auxin) of non‐sterile corn plants is much more increased by a tryptophan application than the auxin content of sterile plants”
e2“The epiphytic bacteria settling the shoot surface are responsible for this effect, since in special experiments the rhizosphere was separated from the tryptophan treatment”
Claim · model-written summary
Sterilized corn plants reinfected with epiphytic IAA-producing bacteria behave like non-sterile plants.
- Taxon
- corn plantsZea mays subsp. mayse0
- Treatment
- reinfected with epiphytic IAA‐producing bacteria strainse1
- Interactor
- epiphytic IAA‐producing bacteriae1other
- Outcome
- behave like non‐sterile plantse1
- Comparator
- non‐sterile plantse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The auxin content (extractable and ‘diffusible’ auxin) of non‐sterile corn plants is much more increased by a tryptophan application than the auxin content of sterile plants”
e1“Sterilized plants which were artificially reinfected with epiphytic IAA‐producing bacteria strains behave like non‐sterile plants”
Claim · model-written summary
Non-sterile corn plants superinfected with these bacteria strains have a still higher capacity to convert tryptophan to auxin.
- Taxon
- corn plantsZea mays subsp. mayse0
- Treatment
- superinfected with these bacteria strainse1
- Outcome
- capacity to convert tryptophan to auxine1
- Direction
- still highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The auxin content (extractable and ‘diffusible’ auxin) of non‐sterile corn plants is much more increased by a tryptophan application than the auxin content of sterile plants”
e1“Non‐sterile plants which were superinfected with these bacteria strains have a still higher capacity to convert tryptophan to auxin”
The same questions in other papers
application · physiology: hormones · Zea mays (maize)Positive and negative results
2 in the opposite direction
- 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.