Abstract
A DNA cassette containing an Arabidopsis C repeat/dehydration-responsive element binding factor 1 (CBF1) cDNA and a nos terminator, driven by a cauliflower mosaic virus 35S promoter, was transformed into the tomato (Lycopersicon esculentum) genome. These transgenic tomato plants were more resistant to water deficit stress than the wild-type plants. The transgenic plants exhibited growth retardation by showing dwarf phenotype, and the fruit and seed numbers and fresh weight of the transgenic tomato plants were apparently less than those of the wild-type plants. Exogenous gibberellic acid treatment reversed the growth retardation and enhanced growth of transgenic tomato plants, but did not affect the level of water deficit resistance. The stomata of the transgenic CBF1 tomato plants closed more rapidly than the wild type after water deficit treatment with or without gibberellic acid pretreatment. The transgenic tomato plants contained higher levels of Pro than those of the wild-type plants under normal or water deficit conditions. Subtractive hybridization was used to isolate the responsive genes to heterologous CBF1 in transgenic tomato plants and the CAT1 (CATALASE1) was characterized. Catalase activity increased, and hydrogen peroxide concentration decreased in transgenic tomato plants compared with the wild-type plants with or without water deficit stress. These results indicated that the heterologous Arabidopsis CBF1 can confer water deficit resistance in transgenic tomato plants.
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Claims 10
Claim · model-written summary
Transgenic tomato plants were more resistant to water deficit than wild type.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- transgenice0
- Outcome
- water deficit stresse0
- Direction
- more resistante0
- Comparator
- wild-type plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These transgenic tomato plants were more resistant to water deficit stress than the wild-type plants”
t0“Tomato Plants Ectopically Expressing Arabidopsis CBF1 Show Enhanced Resistance to Water Deficit Stress”
Claim · model-written summary
Transgenic tomato plants had a dwarf phenotype.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- transgenice0
- Outcome
- dwarf phenotypee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transgenic plants exhibited growth retardation by showing dwarf phenotype”
t0“Tomato Plants Ectopically Expressing Arabidopsis CBF1 Show Enhanced Resistance to Water Deficit Stress”
Claim · model-written summary
Fruit and seed numbers and fresh weight were lower in transgenic tomato plants.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- transgenice0
- Outcome
- fruit and seed numbers and fresh weighte0
- Direction
- lesse0
- Comparator
- wild-type plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the fruit and seed numbers and fresh weight of the transgenic tomato plants were apparently less than those of the wild-type plants”
t0“Tomato Plants Ectopically Expressing Arabidopsis CBF1 Show Enhanced Resistance to Water Deficit Stress”
Claim · model-written summary
Exogenous gibberellic acid reversed growth retardation and enhanced transgenic tomato growth.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Exogenous gibberellic acid treatmente0
- Outcome
- growth retardatione0
- Direction
- reversede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous gibberellic acid treatment reversed the growth retardation and enhanced growth of transgenic tomato plants”
t0“Tomato Plants Ectopically Expressing Arabidopsis CBF1 Show Enhanced Resistance to Water Deficit Stress”
Claim · model-written summary
Gibberellic acid did not affect water-deficit resistance.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- gibberellic acide2
- Outcome
- water deficit resistancee0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but did not affect the level of water deficit resistance”
t0“Tomato Plants Ectopically Expressing Arabidopsis CBF1 Show Enhanced Resistance to Water Deficit Stress”
e2“Exogenous gibberellic acid treatment reversed the growth retardation and enhanced growth of transgenic tomato plants”
Claim · model-written summary
Transgenic CBF1 tomato stomata closed more rapidly than wild type after water deficit, with or without gibberellic acid.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- stomatae0
- Treatment
- water deficit treatmente0
- Gene
- CBF1e0
- Outcome
- stomatae0
- Direction
- more rapidlye0
- Qualifier
- with or without gibberellic acid pretreatmente0
- Comparator
- wild typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stomata of the transgenic CBF1 tomato plants closed more rapidly than the wild type after water deficit treatment with or without gibberellic acid pretreatment”
t0“Tomato Plants Ectopically Expressing Arabidopsis CBF1 Show Enhanced Resistance to Water Deficit Stress”
Claim · model-written summary
Transgenic tomato plants had higher Pro levels under normal and water-deficit conditions.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- transgenice0
- Outcome
- levels of Proe0
- Direction
- highere0
- Qualifier
- under normal or water deficit conditionse0
- Comparator
- wild-type plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transgenic tomato plants contained higher levels of Pro than those of the wild-type plants under normal or water deficit conditions”
t0“Tomato Plants Ectopically Expressing Arabidopsis CBF1 Show Enhanced Resistance to Water Deficit Stress”
Claim · model-written summary
CAT1 was characterized among genes responsive to heterologous CBF1.
- Taxon
- TomatoSolanum lycopersicumt0
- Gene
- CAT1 (CATALASE1)e0
- Outcome
- CAT1 (CATALASE1)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the CAT1 (CATALASE1) was characterized”
t0“Tomato Plants Ectopically Expressing Arabidopsis CBF1 Show Enhanced Resistance to Water Deficit Stress”
Claim · model-written summary
Catalase activity increased in transgenic tomato relative to wild type.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- transgenice0
- Outcome
- Catalase activitye0
- Direction
- increasede0
- Qualifier
- with or without water deficit stresse0
- Comparator
- wild-type plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Catalase activity increased, and hydrogen peroxide concentration decreased in transgenic tomato plants compared with the wild-type plants with or without water deficit stress”
t0“Tomato Plants Ectopically Expressing Arabidopsis CBF1 Show Enhanced Resistance to Water Deficit Stress”
Claim · model-written summary
Hydrogen peroxide concentration decreased in transgenic tomato relative to wild type.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- transgenice0
- Outcome
- hydrogen peroxide concentratione0
- Direction
- decreasede0
- Qualifier
- with or without water deficit stresse0
- Comparator
- wild-type plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Catalase activity increased, and hydrogen peroxide concentration decreased in transgenic tomato plants compared with the wild-type plants with or without water deficit stress”
t0“Tomato Plants Ectopically Expressing Arabidopsis CBF1 Show Enhanced Resistance to Water Deficit Stress”
The same questions in other papers
Gibberellic acid · disease · Solanum lycopersicum (tomato)Positive and negative results
4 papers in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
11 papers more in this group
See all 15 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.