Abstract
Changes in the metabolism of 1-aminocyclopropane-l-carboxylic acid (ACC) during senescence in the light in turgid, water-stressed, and ABA-treated, excised rice leaves were examined. The decreases in levels of Chl and protein were more rapid in the water-stressed and in the ABA-treated leaves than in the turgid leaves. In turgid leaves, levels of proline remained very low, but they increased considerably as a result of water stress or treatment with ABA. The production of ethylene was strongly inhibited by water stress and by ABA through the inhibition of the synthesis of ACC and/or the conversion of ACC to ethylene. In turgid leaves, the level of 1-(malonylamino)cyclopropane-l-carboxylic acid (MACC) increased with time during incubation in the light. Water stress resulted in a pattern of accumulation of MACC similar to that in the turgid control. However, ABA blocked the malonylation of ACC.
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Claims 11
Claim · model-written summary
Water stress accelerated chlorophyll and protein loss in excised rice leaves.
- Taxon
- Rice Leaves
Oryza sativat0 - Treatment
- water-stressede0
- Outcome
- levels of Chl and proteine0
- Direction
- more rapide0
- Comparator
- turgid leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decreases in levels of Chl and protein were more rapid in the water-stressed and in the ABA-treated leaves than in the turgid leaves.”
t0“Rice Leaves”
Claim · model-written summary
ABA accelerated chlorophyll and protein loss in excised rice leaves.
- Taxon
- Rice LeavesOryza sativat0
- Treatment
- ABA-treatede0
- Outcome
- levels of Chl and proteine0
- Direction
- more rapide0
- Comparator
- turgid leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decreases in levels of Chl and protein were more rapid in the water-stressed and in the ABA-treated leaves than in the turgid leaves.”
t0“Rice Leaves”
Claim · model-written summary
Proline stayed very low in turgid rice leaves.
- Taxon
- Rice LeavesOryza sativat0
- Outcome
- levels of prolinee0
- Direction
- very lowe0
- Qualifier
- turgid leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In turgid leaves, levels of proline remained very low”
t0“Rice Leaves”
Claim · model-written summary
Water stress considerably increased proline in rice leaves.
- Taxon
- Rice LeavesOryza sativat0
- Treatment
- water stresse0
- Outcome
- levels of prolinee1
- Direction
- increased considerablye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they increased considerably as a result of water stress or treatment with ABA”
e1“levels of proline remained very low”
t0“Rice Leaves”
Claim · model-written summary
ABA considerably increased proline in rice leaves.
- Taxon
- Rice LeavesOryza sativat0
- Treatment
- treatment with ABAe0
- Outcome
- levels of prolinee1
- Direction
- increased considerablye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“they increased considerably as a result of water stress or treatment with ABA”
e1“levels of proline remained very low”
t0“Rice Leaves”
Claim · model-written summary
Water stress strongly inhibited ethylene production.
- Taxon
- Rice LeavesOryza sativat0
- Treatment
- water stresse0
- Outcome
- production of ethylenee0
- Direction
- strongly inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The production of ethylene was strongly inhibited by water stress and by ABA”
t0“Rice Leaves”
Claim · model-written summary
ABA strongly inhibited ethylene production.
- Taxon
- Rice LeavesOryza sativat0
- Treatment
- ABAe0
- Outcome
- production of ethylenee0
- Direction
- strongly inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The production of ethylene was strongly inhibited by water stress and by ABA”
t0“Rice Leaves”
Claim · model-written summary
The authors attributed inhibited ethylene production to ACC synthesis and/or conversion inhibition.
- Taxon
- Rice LeavesOryza sativat0
- Treatment
- water stress and by ABAe0
- Outcome
- production of ethylenee0
- Qualifier
- inhibition of the synthesis of ACC and/or the conversion of ACC to ethylenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The production of ethylene was strongly inhibited by water stress and by ABA through the inhibition of the synthesis of ACC and/or the conversion of ACC to ethylene.”
t0“Rice Leaves”
Claim · model-written summary
MACC increased over time in turgid leaves incubated in light.
- Taxon
- Rice LeavesOryza sativat0
- Outcome
- level of 1-(malonylamino)cyclopropane-l-carboxylic acid (MACC)e0
- Direction
- increasede0
- Qualifier
- during incubation in the lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In turgid leaves, the level of 1-(malonylamino)cyclopropane-l-carboxylic acid (MACC) increased with time during incubation in the light.”
t0“Rice Leaves”
Claim · model-written summary
Water stress produced MACC accumulation similar to turgid controls.
- Taxon
- Rice LeavesOryza sativat0
- Treatment
- Water stresse0
- Outcome
- pattern of accumulation of MACCe0
- Direction
- similare0
- Comparator
- turgid controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress resulted in a pattern of accumulation of MACC similar to that in the turgid control.”
t0“Rice Leaves”
Claim · model-written summary
ABA blocked ACC malonylation.
- Taxon
- Rice LeavesOryza sativat0
- Treatment
- ABAe0
- Outcome
- malonylation of ACCe0
- Direction
- blockede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA blocked the malonylation of ACC.”
t0“Rice Leaves”
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See all 36 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.