Abstract
The rate of wound ethylene synthesis was reduced by more than 85% when 9-millimeter subapical sections of etiolated 7-day-old Pisum sativum L., cv. Alaska seedlings were incubated in water during the 26-minute induction period prior to wound ethylene synthesis, but the rate of synthesis was unaffected if sections were incubated in water during the actual synthesis of wound ethylene. The characteristic timing of the wound response was unaffected by either treatment. The ability of various chemical solutions and aqueous plant extracts to alter the rate of wound ethylene synthesis was studied by first incubating subapical pea stem sections in solutions under anaerobic conditions (anaerobiosis delays the induction and synthesis of wound ethylene; Plant Physiol 61: 675-679), and then measuring wound ethylene synthesis after the tissue was transferred to air. Solutions of several reported precursors of ethylene synthesis, such as methionine, homoserine, or propanal, did not reverse the water-caused reduction of wound ethylene synthesis. A water-soluble, heat-stable factor in extracts from pea seedlings, and solutions of 23 nanomolar triacontanol, 10 micromolar kinetin, or 10 micromolar benzyladenine prevented the reduction of wound ethylene synthesis, but were ineffective if administered after an initial 15-minute anaerobic water incubation. This suggested that the active solutions may have only prevented the loss of some ephemeral, though necessary factor, rather than actually containing the substrate or inducer of wound ethylene synthesis. Attempts to isolate and characterize the active fraction from aqueous tissue extracts were unsuccessful. Free radical quenchers, inhibitors of protein synthesis, and rhizobitoxine, an inhibitor of ethylene synthesis from methionine, all reduced wound ethylene synthesis when administered in solutions which previously had maintained wound ethylene synthesis.
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Claims 11
Claim · model-written summary
Water during induction reduced wound ethylene synthesis by more than 85%.
- Taxon
- Pisum sativum L.
Lathyrus oleraceuse0 - Material
- cv. Alaskae0
- Treatment
- incubated in water during the 26-minute induction periode0
- Outcome
- rate of wound ethylene synthesise0
- Direction
- reducede0
- Value
- more than 85%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rate of wound ethylene synthesis was reduced by more than 85% when 9-millimeter subapical sections of etiolated 7-day-old Pisum sativum L., cv. Alaska seedlings were incubated in water during the 26-minute induction period prior to wound ethylene synthesis”
Claim · model-written summary
Water during actual synthesis left the synthesis rate unaffected.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- incubated in water during the actual synthesis of wound ethylenee0
- Outcome
- rate of synthesise0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the rate of synthesis was unaffected if sections were incubated in water during the actual synthesis of wound ethylene”
t0“Pisum sativum L.”
Claim · model-written summary
Neither water treatment altered the timing of the wound response.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- either treatmente0
- Outcome
- characteristic timing of the wound responsee0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The characteristic timing of the wound response was unaffected by either treatment”
t0“Pisum sativum L.”
Claim · model-written summary
Methionine, homoserine and propanal did not reverse water-caused suppression.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- methionine, homoserine, or propanale0
- Outcome
- water-caused reduction of wound ethylene synthesise0
- Direction
- did not reversee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Solutions of several reported precursors of ethylene synthesis, such as methionine, homoserine, or propanal, did not reverse the water-caused reduction of wound ethylene synthesis”
t0“Pisum sativum L.”
Claim · model-written summary
A factor in pea seedling extracts prevented reduced wound ethylene synthesis.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- A water-soluble, heat-stable factor in extracts from pea seedlingse0
- Outcome
- reduction of wound ethylene synthesise0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A water-soluble, heat-stable factor in extracts from pea seedlings, and solutions of 23 nanomolar triacontanol, 10 micromolar kinetin, or 10 micromolar benzyladenine prevented the reduction of wound ethylene synthesis”
Claim · model-written summary
Triacontanol prevented reduced wound ethylene synthesis.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- 23 nanomolar triacontanole0
- Outcome
- reduction of wound ethylene synthesise0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“23 nanomolar triacontanol, 10 micromolar kinetin, or 10 micromolar benzyladenine prevented the reduction of wound ethylene synthesis”
t0“Pisum sativum L.”
Claim · model-written summary
Kinetin prevented reduced wound ethylene synthesis.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- 10 micromolar kinetine0
- Outcome
- reduction of wound ethylene synthesise0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“10 micromolar kinetin, or 10 micromolar benzyladenine prevented the reduction of wound ethylene synthesis”
t0“Pisum sativum L.”
Claim · model-written summary
Benzyladenine prevented reduced wound ethylene synthesis.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- 10 micromolar benzyladeninee0
- Outcome
- reduction of wound ethylene synthesise0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“10 micromolar benzyladenine prevented the reduction of wound ethylene synthesis”
t0“Pisum sativum L.”
Claim · model-written summary
The active solutions were ineffective after an initial 15-minute anaerobic water incubation.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- administered after an initial 15-minute anaerobic water incubatione0
- Outcome
- ineffectivee0
- Direction
- ineffectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were ineffective if administered after an initial 15-minute anaerobic water incubation”
t0“Pisum sativum L.”
Claim · model-written summary
Attempts to isolate the active fraction were unsuccessful.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Outcome
- isolate and characterize the active fractione0
- Direction
- unsuccessfule0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Attempts to isolate and characterize the active fraction from aqueous tissue extracts were unsuccessful”
t0“Pisum sativum L.”
Claim · model-written summary
Free radical quenchers, protein synthesis inhibitors and rhizobitoxine reduced wound ethylene synthesis.
- Taxon
- Pisum sativum L.Lathyrus oleraceust0
- Treatment
- Free radical quenchers, inhibitors of protein synthesis, and rhizobitoxinee0
- Outcome
- wound ethylene synthesise0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Free radical quenchers, inhibitors of protein synthesis, and rhizobitoxine, an inhibitor of ethylene synthesis from methionine, all reduced wound ethylene synthesis when administered in solutions which previously had maintained wound ethylene synthesis”
t0“Pisum sativum L.”
The same questions in other papers
kinetin · physiology: hormones · Lathyrus oleraceus (pea)Positive and negative results
1 in the opposite direction
- no effect
N-benzyladenine · physiology: hormones · Lathyrus oleraceus (pea)Positive and negative results
2 in the opposite direction
- negative
- negative
heat · physiology: hormones · Lathyrus oleraceus (pea)Positive and negative results
1 in the opposite direction
- negative
botanical · physiology: hormones · Lathyrus oleraceus (pea)Results agree
1 paper in the same direction as this paper
- 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.