Abstract
Earlier studies showed that sugars as signaling molecules play pivotal roles in the regulation of seed germination. ABA biosynthesis upregulation is suggested as one of the possible mechanisms mediating the glucose-induced delay in seed germination. In this study, the role of ABA catabolism in glucose-induced inhibition was investigated. Using Arabidopsis thaliana seeds, the results show that the repression of ABA catabolism by diniconazole aggravated the glucose-induced delay in seed germination. The transcript and protein profiles of CYP707A2, a key gene encoding ABA 8'-hydroxylase in ABA catabolism in Arabidopsis, were significantly decreased by exogenous glucose treatment. Transgenic experiments confirmed that the over-expression of the CYP707A2 gene alleviated the glucose-induced inhibition effect, whereas the cyp707a2 mutant seeds displayed a hypersensitivity to glucose during imbibition. Exogenous glucose also arrested the early seedling development of Arabidopsis. The CYP707A2 over-expression seedlings exhibited lower ABA levels and seemed less sensitive to exogenous glucose compared with wild type seedlings. In summary, the glucose-induced delay in seed germination and seedling development is directly related to the suppression of ABA catabolism through the repression of the CYP707A2 expression.
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Claims 9
Claim · model-written summary
Diniconazole aggravated glucose-induced seed germination delay.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae1 - Organ / stage
- seed germinatione0
- Treatment
- diniconazolee0
- Outcome
- glucose-induced delay in seed germinatione0
- Direction
- aggravatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Arabidopsis thaliana seeds”
e0“repression of ABA catabolism by diniconazole aggravated the glucose-induced delay in seed germination.”
Claim · model-written summary
Exogenous glucose significantly decreased CYP707A2 transcript profiles.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- exogenous glucose treatmente0
- Gene
- CYP707A2e0
- Outcome
- transcripte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transcript and protein profiles of CYP707A2, a key gene encoding ABA 8'-hydroxylase in ABA catabolism in Arabidopsis, were significantly decreased by exogenous glucose treatment.”
Claim · model-written summary
Exogenous glucose significantly decreased CYP707A2 protein profiles.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- exogenous glucose treatmente0
- Gene
- CYP707A2e0
- Outcome
- proteine0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transcript and protein profiles of CYP707A2, a key gene encoding ABA 8'-hydroxylase in ABA catabolism in Arabidopsis, were significantly decreased by exogenous glucose treatment.”
Claim · model-written summary
CYP707A2 overexpression alleviated glucose-induced inhibition.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- over-expression of the CYP707A2 genee0
- Gene
- CYP707A2e0
- Outcome
- glucose-induced inhibition effecte0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Arabidopsis thaliana seeds”
e0“over-expression of the CYP707A2 gene alleviated the glucose-induced inhibition effect”
Claim · model-written summary
cyp707a2 mutant seeds were hypersensitive to glucose during imbibition.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Material
- cyp707a2 mutant seedse0
- Organ / stage
- imbibitione0
- Outcome
- hypersensitivity to glucosee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Arabidopsis thaliana seeds”
e0“the cyp707a2 mutant seeds displayed a hypersensitivity to glucose during imbibition.”
Claim · model-written summary
Exogenous glucose arrested early Arabidopsis seedling development.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- Exogenous glucosee0
- Outcome
- early seedling developmente0
- Direction
- arrestede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous glucose also arrested the early seedling development of Arabidopsis.”
Claim · model-written summary
CYP707A2 overexpression seedlings had lower ABA levels than wild type seedlings.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Material
- CYP707A2 over-expression seedlingse0
- Outcome
- ABA levelse0
- Direction
- lowere0
- Comparator
- wild type seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Arabidopsis thaliana seeds”
e0“The CYP707A2 over-expression seedlings exhibited lower ABA levels and seemed less sensitive to exogenous glucose compared with wild type seedlings.”
Claim · model-written summary
CYP707A2 overexpression seedlings had less sensitive to exogenous glucose than wild type seedlings.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Material
- CYP707A2 over-expression seedlingse0
- Outcome
- sensitive to exogenous glucosee0
- Direction
- lesse0
- Comparator
- wild type seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Arabidopsis thaliana seeds”
e0“The CYP707A2 over-expression seedlings exhibited lower ABA levels and seemed less sensitive to exogenous glucose compared with wild type seedlings.”
Claim · model-written summary
Authors relate glucose-induced germination and seedling delay to suppressed ABA catabolism via CYP707A2 repression.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Gene
- CYP707A2e0
- Outcome
- glucose-induced delay in seed germination and seedling developmente0
- Qualifier
- suppression of ABA catabolisme0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Arabidopsis thaliana seeds”
e0“glucose-induced delay in seed germination and seedling development is directly related to the suppression of ABA catabolism through the repression of the CYP707A2 expression.”
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See all 8 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.