Abstract
The role of H(+) excretion in auxin-induced growth of soybean hypocotyl tissues has been investigated, using tissues whose cuticle was rendered permeable to protons or buffers by scarification (scrubbing). Indoleacetic acid induces both elongation and H(+) excretion after a lag of 10 to 12 minutes. Cycloheximide inhibits growth and causes the tissues to remove protons from the medium. Neutral buffers (pH 7.0) inhibit auxin-induced growth of scrubbed but not intact sections; the inhibition increases as the buffer strength is increased. Both live and frozen-thawed sections, in the absence of auxin, extend in response to exogenously supplied protons. Fusicoccin induces both elongation and H(+) excretion at rates greater than does auxin. These results indicate that H(+) excretion is involved in the initiation of auxin-induced elongation in soybean hypocotyl tissue.
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Claims 9
Claim · model-written summary
Indoleacetic acid induced soybean hypocotyl elongation after a 10 to 12 minute lag.
- Taxon
- soybean
Glycine maxt0 - Organ / stage
- Hypocotylst0
- Treatment
- Indoleacetic acide0
- Outcome
- elongatione0
- Direction
- inducese0
- Value
- 10 to 12 minutese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Indoleacetic acid induces both elongation and H(+) excretion after a lag of 10 to 12 minutes”
t0“Soybean Hypocotyls”
Claim · model-written summary
Indoleacetic acid induced proton excretion after a 10 to 12 minute lag.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Indoleacetic acide0
- Outcome
- H(+) excretione0
- Direction
- inducese0
- Value
- 10 to 12 minutese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Indoleacetic acid induces both elongation and H(+) excretion after a lag of 10 to 12 minutes”
t0“Soybean Hypocotyls”
Claim · model-written summary
Cycloheximide inhibited growth of soybean hypocotyl tissue.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Cycloheximidee0
- Outcome
- growthe0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cycloheximide inhibits growth”
t0“Soybean Hypocotyls”
Claim · model-written summary
Cycloheximide caused soybean tissue to remove protons from the medium.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Cycloheximidee0
- Outcome
- remove protons from the mediume0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cycloheximide inhibits growth and causes the tissues to remove protons from the medium”
t0“Soybean Hypocotyls”
Claim · model-written summary
Neutral pH 7.0 buffers inhibited auxin-induced growth in scrubbed sections, increasingly with buffer strength.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Neutral buffers (pH 7.0)e0
- Outcome
- auxin-induced growthe0
- Direction
- inhibite0
- Qualifier
- the inhibition increases as the buffer strength is increasede0
- Comparator
- intact sectionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neutral buffers (pH 7.0) inhibit auxin-induced growth of scrubbed but not intact sections; the inhibition increases as the buffer strength is increased”
t0“Soybean Hypocotyls”
Claim · model-written summary
Exogenous protons extended live soybean sections without auxin.
- Taxon
- soybeanGlycine maxt0
- Treatment
- exogenously supplied protonse0
- Outcome
- live and frozen-thawed sectionse0
- Direction
- extende0
- Qualifier
- in the absence of auxine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both live and frozen-thawed sections, in the absence of auxin, extend in response to exogenously supplied protons”
t0“Soybean Hypocotyls”
Claim · model-written summary
Fusicoccin induced hypocotyl elongation faster than auxin.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Fusicoccine0
- Outcome
- elongatione0
- Direction
- greatere0
- Comparator
- auxine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fusicoccin induces both elongation and H(+) excretion at rates greater than does auxin”
t0“Soybean Hypocotyls”
Claim · model-written summary
Fusicoccin induced proton excretion faster than auxin.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Fusicoccine0
- Outcome
- H(+) excretione0
- Direction
- greatere0
- Comparator
- auxine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fusicoccin induces both elongation and H(+) excretion at rates greater than does auxin”
t0“Soybean Hypocotyls”
Claim · model-written summary
The authors infer that proton excretion helps initiate auxin-induced hypocotyl elongation.
- Taxon
- soybeanGlycine maxe0
- Outcome
- auxin-induced elongatione0
- Qualifier
- H(+) excretione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H(+) excretion is involved in the initiation of auxin-induced elongation in soybean hypocotyl tissue”
The same questions in other papers
indole-3-acetic acid · growth · Glycine max (soybean)Results differ
12 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
12 papers more in this group
See all 16 papers →cycloheximide · molecular: metabolites · Glycine max (soybean)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
2 papers more in this group
See all 6 papers →cycloheximide · growth · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- negative
buffer · physiology: hormones · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- negative
fusicoccin · growth · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- positive
ph · physiology: hormones · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- negative
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.