Abstract
This study aimed to examine the effects of UV-B on AsA and gene expression in cucumber seedlings. Particular emphasis was placed on identifying genes that were responsive to UV-B to increase AsA levels and elucidate the key UV-B response pathway. We found that the activities of myo-inositol oxygenase (MIOX), galactono-1,4-lactone dehydrogenase (GLDH), ascorbate oxidase (AO), ascorbate peroxidase (APX), glutathione reductase (GR), dehydroascorbate reductase (DHAR), and the transcript levels of CsMIOX1, CsGLDH, CsAO2, CsAO4, CsGR1, CsAPX5, and CsDHAR1 significantly increased with UV-B exposure. These observations indicate that UV-B induces the expression of genes involved in d-mannose/l-galactose and myo-inositol pathways and the ascorbate-glutathione system. Moreover, several genes related to the low and high UV-B fluence responses were considered. CsHY5 and CsMYB60 were involved with the low-fluence response and appeared to be responsive from 2 to 28 h. Together, these data show that these genes respond to UV-B to increase AsA levels through the low-fluence UV-B response pathway.
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Claims 8
Claim · model-written summary
Activities of myo-inositol oxygenase, galactono-1,4-lactone dehydrogenase and ascorbate oxidase significantly increased with UV-B exposure in cucumber seedlings.
- Taxon
- cucumber seedlings
Cucumis sativuse0 - Treatment
- UV-B exposuree1
- Outcome
- activities of myo-inositol oxygenase (MIOX), galactono-1,4-lactone dehydrogenase (GLDH), ascorbate oxidase (AO)e1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber seedlings”
e1“activities of myo-inositol oxygenase (MIOX), galactono-1,4-lactone dehydrogenase (GLDH), ascorbate oxidase (AO), ascorbate peroxidase (APX), glutathione reductase (GR), dehydroascorbate reductase (DHAR), and the transcript levels of CsMIOX1, CsGLDH, CsAO2, CsAO4, CsGR1, CsAPX5, and CsDHAR1 significantly increased with UV-B exposure”
Claim · model-written summary
Activities of ascorbate peroxidase, glutathione reductase and dehydroascorbate reductase significantly increased with UV-B exposure in cucumber seedlings.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- UV-B exposuree1
- Outcome
- ascorbate peroxidase (APX), glutathione reductase (GR), dehydroascorbate reductase (DHAR)e1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber seedlings”
e1“activities of myo-inositol oxygenase (MIOX), galactono-1,4-lactone dehydrogenase (GLDH), ascorbate oxidase (AO), ascorbate peroxidase (APX), glutathione reductase (GR), dehydroascorbate reductase (DHAR), and the transcript levels of CsMIOX1, CsGLDH, CsAO2, CsAO4, CsGR1, CsAPX5, and CsDHAR1 significantly increased with UV-B exposure”
Claim · model-written summary
Transcript levels of CsMIOX1, CsGLDH and CsAO2 significantly increased with UV-B exposure in cucumber seedlings.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- UV-B exposuree1
- Gene
- CsMIOX1, CsGLDH, CsAO2e1
- Outcome
- transcript levelse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber seedlings”
e1“transcript levels of CsMIOX1, CsGLDH, CsAO2, CsAO4, CsGR1, CsAPX5, and CsDHAR1 significantly increased with UV-B exposure”
Claim · model-written summary
Transcript levels of CsAO4, CsGR1 and CsAPX5 significantly increased with UV-B exposure in cucumber seedlings.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- UV-B exposuree1
- Gene
- CsAO4, CsGR1, CsAPX5e1
- Outcome
- transcript levelse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber seedlings”
e1“transcript levels of CsMIOX1, CsGLDH, CsAO2, CsAO4, CsGR1, CsAPX5, and CsDHAR1 significantly increased with UV-B exposure”
Claim · model-written summary
Transcript level of CsDHAR1 significantly increased with UV-B exposure in cucumber seedlings.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- UV-B exposuree1
- Gene
- CsDHAR1e1
- Outcome
- transcript levelse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber seedlings”
e1“transcript levels of CsMIOX1, CsGLDH, CsAO2, CsAO4, CsGR1, CsAPX5, and CsDHAR1 significantly increased with UV-B exposure”
Claim · model-written summary
The authors conclude that UV-B induces expression of genes of the d-mannose/l-galactose and myo-inositol pathways and the ascorbate-glutathione system in cucumber seedlings.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- UV-Be1
- Outcome
- expression of genese1
- Qualifier
- d-mannose/l-galactose and myo-inositol pathways and the ascorbate-glutathione systeme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber seedlings”
e1“UV-B induces the expression of genes involved in d-mannose/l-galactose and myo-inositol pathways and the ascorbate-glutathione system”
Claim · model-written summary
CsHY5 and CsMYB60 were involved in the low-fluence UV-B response in cucumber seedlings and appeared responsive from 2 to 28 h.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Gene
- CsHY5 and CsMYB60e1
- Outcome
- low-fluence responsee1
- Qualifier
- from 2 to 28 he1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber seedlings”
e1“CsHY5 and CsMYB60 were involved with the low-fluence response and appeared to be responsive from 2 to 28 h”
Claim · model-written summary
The authors conclude that these genes respond to UV-B to increase AsA levels through the low-fluence UV-B response pathway in cucumber seedlings.
- Taxon
- cucumber seedlingsCucumis sativuse0
- Treatment
- UV-Be1
- Outcome
- AsA levelse1
- Qualifier
- low-fluence UV-B response pathwaye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber seedlings”
e1“these genes respond to UV-B to increase AsA levels through the low-fluence UV-B response pathway”
The same questions in other papers
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1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
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uv · molecular: metabolites · Cucumis sativus (cucumber)Positive and negative results
6 papers in the same direction as this paper · 4 in the opposite direction
- negative
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7 papers more in this group
See all 11 papers →uv · physiology: antioxidant enzymes · Cucumis sativus (cucumber)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.