Abstract
A full-length cDNA of dehydrin BcDh2 from Boea crassifolia and its antisense nucleotidesequence have been transferred into tobacco (Nicotiana tabacum) NC89 under the controlof a caulifower mosaic virus 35S promoter. Under a progressive water stress, photosyntheticrate, transpiration rate and stomatal conductance of the sense and antisense plantsreduced, and those of the control reduced much more. Photosynthetic rate, transpirationrate and stomatal conductance of all plants tested increased significantly 24 hourslater after recoveried water supply, and those of the sense and antisense plants werehigher than control. These indicated that overexpression of a dehydrin gene in tobaccomay improve tolerance to water stress for plants, however, antisense BcDh2 gene intransgenic plant did not influence physiological conditions. The results of germinationexperiment of the transgenic seeds showed that on MS medium with different concentrationPEG (8000), sense seed could more endure drought than control, while antisense seed wassensitive to drought. The results suggested that the overexpression of a dehydrin genein tobacco might improve the tolerance to water stress for plants.
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Claims 7
Claim · model-written summary
Under progressive water stress, photosynthetic rate, transpiration rate and stomatal conductance of sense and antisense plants decreased, and those of the control decreased much more.
- Taxon
- tobacco
Nicotiana tabacume1 - Treatment
- progressive water stresse0
- Outcome
- photosyntheticrate, transpiration rate and stomatal conductancee0
- Direction
- reducede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under a progressive water stress, photosyntheticrate, transpiration rate and stomatal conductance of the sense and antisense plantsreduced, and those of the control reduced much more”
e1“have been transferred into tobacco (Nicotiana tabacum) NC89”
Claim · model-written summary
After recovery of water supply, photosynthetic rate, transpiration rate and stomatal conductance of all plants increased significantly.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- recoveried water supplye2
- Outcome
- Photosynthetic rate, transpiration rate and stomatal conductancee2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“have been transferred into tobacco (Nicotiana tabacum) NC89”
e2“Photosynthetic rate, transpiration rate and stomatal conductance of all plants tested increased significantly 24 hourslater after recoveried water supply”
Claim · model-written summary
After recovery, sense and antisense plants had higher photosynthetic rate, transpiration rate and stomatal conductance than control.
- Taxon
- tobaccoNicotiana tabacume1
- Material
- sense and antisense plantse2
- Treatment
- recoveried water supplye2
- Outcome
- Photosynthetic rate, transpiration rate and stomatal conductancee2
- Direction
- highere2
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“have been transferred into tobacco (Nicotiana tabacum) NC89”
e2“Photosynthetic rate, transpiration rate and stomatal conductance of all plants tested increased significantly 24 hourslater after recoveried water supply, and those of the sense and antisense plants werehigher than control”
Claim · model-written summary
The authors suggest that overexpression of the dehydrin gene may improve tolerance to water stress in tobacco.
- Taxon
- tobaccoNicotiana tabacume4
- Treatment
- overexpression of a dehydrin genee4
- Outcome
- tolerance to water stresse4
- Direction
- improvee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The results suggested that the overexpression of a dehydrin genein tobacco might improve the tolerance to water stress for plants”
Claim · model-written summary
Antisense BcDh2 gene in transgenic tobacco did not influence physiological conditions.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- antisense BcDh2 genee5
- Gene
- BcDh2e5
- Outcome
- physiological conditionse5
- Direction
- did not influencee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“have been transferred into tobacco (Nicotiana tabacum) NC89”
e5“antisense BcDh2 gene intransgenic plant did not influence physiological conditions”
Claim · model-written summary
On PEG medium, sense seeds endured drought more than control seeds.
- Taxon
- tobaccoNicotiana tabacume1
- Material
- sense seede3
- Treatment
- PEG (8000)e3
- Outcome
- endure droughte3
- Direction
- moree3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“have been transferred into tobacco (Nicotiana tabacum) NC89”
e3“on MS medium with different concentration PEG (8000), sense seed could more endure drought than control, while antisense seed wassensitive to drought”
Claim · model-written summary
On PEG medium, antisense seeds were sensitive to drought.
- Taxon
- tobaccoNicotiana tabacume1
- Material
- antisense seede3
- Treatment
- PEG (8000)e3
- Outcome
- sensitive to droughte3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“have been transferred into tobacco (Nicotiana tabacum) NC89”
e3“on MS medium with different concentration PEG (8000), sense seed could more endure drought than control, while antisense seed wassensitive to drought”
The same questions in other papers
irrigation · physiology: photosynthesis · Nicotiana tabacum (tobacco)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
1 paper more in this group
See all 5 papers →drought · physiology: photosynthesis · Nicotiana tabacum (tobacco)Positive and negative results
24 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
22 papers more in this group
See all 26 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.