Abstract
The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes; the latter has a reduced capacity to produce ethylene. Ethephon or silver ions were applied to increase ethylene production or block its action. Shoot growth in both genotypes was comparable in uncompacted (1.1 g cm(-3)) and uniformly compacted soil (1.5 g cm(-3)). However, a 1.1/1.5-g cm(-3) split-pot treatment invoked marked genotypic differences: growth was reduced in cv Ailsa Craig but was comparable to uncompacted control plants in ACO1(AS). As xylem sap abscisic acid levels were similar, abscisic acid was not responsible for inhibiting growth in cv Ailsa Craig. These genotypic differences in growth were accompanied by increased ethylene evolution in cv Ailsa Craig, suggesting that the ability of ACO1(AS) to maintain growth in the split-pot treatment reflected its lower ethylene levels, a view supported by the observation that excising the roots in the compacted compartment reduced ethylene evolution and restored shoot growth in cv Ailsa Craig. Treatment with silver restored shoot growth in cv Ailsa Craig, whereas treatment with ethephon reduced growth in ACO1(AS). Thus, ethylene apparently has a key role in determining growth when tomato plants encounter differential soil compaction.
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Claims 11
Claim · model-written summary
Shoot growth of both tomato genotypes was comparable between uncompacted and uniformly compacted soil.
- Taxon
- tomato
Solanum lycopersicume0 - Material
- wild-type (cv Ailsa Craig) and transgenic (ACO1(AS))e0
- Treatment
- uniformly compacted soil (1.5 g cm(-3))e1
- Outcome
- Shoot growthe1
- Direction
- comparablee1
- Comparator
- uncompacted (1.1 g cm(-3))e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e1“Shoot growth in both genotypes was comparable in uncompacted (1.1 g cm(-3)) and uniformly compacted soil (1.5 g cm(-3))”
Claim · model-written summary
In the split-pot compaction treatment, shoot growth was reduced in cv Ailsa Craig tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv Ailsa Craige2
- Treatment
- 1.1/1.5-g cm(-3) split-pot treatmente2
- Outcome
- growthe2
- Direction
- reducede2
- Comparator
- uncompacted control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e2“a 1.1/1.5-g cm(-3) split-pot treatment invoked marked genotypic differences: growth was reduced in cv Ailsa Craig but was comparable to uncompacted control plants in ACO1(AS)”
Claim · model-written summary
In the split-pot compaction treatment, shoot growth of ACO1(AS) tomato was comparable to uncompacted control plants.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- ACO1(AS)e2
- Treatment
- 1.1/1.5-g cm(-3) split-pot treatmente2
- Outcome
- growthe2
- Direction
- comparablee2
- Comparator
- uncompacted control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e2“a 1.1/1.5-g cm(-3) split-pot treatment invoked marked genotypic differences: growth was reduced in cv Ailsa Craig but was comparable to uncompacted control plants in ACO1(AS)”
Claim · model-written summary
Abscisic acid was not responsible for growth inhibition in cv Ailsa Craig tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv Ailsa Craige3
- Compound
- abscisic acide3
- Outcome
- inhibiting growthe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e3“As xylem sap abscisic acid levels were similar, abscisic acid was not responsible for inhibiting growth in cv Ailsa Craig”
Claim · model-written summary
Xylem sap abscisic acid levels were similar between the tomato genotypes under split-pot compaction.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- xylem sap abscisic acid levelse3
- Qualifier
- similare3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e3“As xylem sap abscisic acid levels were similar, abscisic acid was not responsible for inhibiting growth in cv Ailsa Craig”
Claim · model-written summary
Growth differences between genotypes were accompanied by increased ethylene evolution in cv Ailsa Craig tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv Ailsa Craige4
- Compound
- ethylenee4
- Outcome
- ethylene evolutione4
- Direction
- increasede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e4“These genotypic differences in growth were accompanied by increased ethylene evolution in cv Ailsa Craig”
Claim · model-written summary
Excising roots in the compacted compartment reduced ethylene evolution in cv Ailsa Craig tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv Ailsa Craige5
- Treatment
- excising the roots in the compacted compartmente5
- Outcome
- ethylene evolutione5
- Direction
- reducede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e5“excising the roots in the compacted compartment reduced ethylene evolution and restored shoot growth in cv Ailsa Craig”
Claim · model-written summary
Excising roots in the compacted compartment restored shoot growth in cv Ailsa Craig tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv Ailsa Craige5
- Treatment
- excising the roots in the compacted compartmente5
- Outcome
- shoot growthe5
- Direction
- restorede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e5“excising the roots in the compacted compartment reduced ethylene evolution and restored shoot growth in cv Ailsa Craig”
Claim · model-written summary
Silver treatment restored shoot growth in cv Ailsa Craig tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv Ailsa Craige6
- Treatment
- silvere6
- Outcome
- shoot growthe6
- Direction
- restorede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e6“Treatment with silver restored shoot growth in cv Ailsa Craig, whereas treatment with ethephon reduced growth in ACO1(AS)”
Claim · model-written summary
Ethephon treatment reduced growth in ACO1(AS) tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- ACO1(AS)e6
- Treatment
- ethephone6
- Outcome
- growthe6
- Direction
- reducede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e6“Treatment with silver restored shoot growth in cv Ailsa Craig, whereas treatment with ethephon reduced growth in ACO1(AS)”
Claim · model-written summary
Ethylene apparently has a key role in determining tomato growth under differential soil compaction.
- Taxon
- tomato plantsSolanum lycopersicume7
- Compound
- ethylenee7
- Outcome
- determining growthe7
- Qualifier
- key rolee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of ethylene in regulating growth in tomato (Lycopersicon esculentum Mill.) during compaction stress was examined using wild-type (cv Ailsa Craig) and transgenic (ACO1(AS)) genotypes”
e7“Thus, ethylene apparently has a key role in determining growth when tomato plants encounter differential soil compaction”
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