Abstract
A seed-specific transcriptional regulator, VP1, is required for the induction of ABA-regulated genes that include Lea (late embryogenesis abundant protein) genes. Although the induction of one rice Lea gene, Osem, by ABA is normally restricted to seed tissues, we found that the expression was strongly induced by ABA in the Oc line of rice suspension-cultured cells. Since this observation suggested that rice VP1 (OSVP1) protein or a functionally similar protein might be expressed in the cultured cells, we analyzed the expression of Osvp1 in these cells at both the mRNA and the protein level, we detected Osvp1 mRNA and OSVP1 protein in the cultured cells at levels similar to or higher than those in developing embryos. In the cultured cells, neither the level of total cellular OSVP1 nor that of nuclear OSVP1 protein was affected by ABA. Based on the results, the mechanism for the transcriptional regulation of VP1-dependent ABA-inducible genes is discussed.
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Claims 4
Claim · model-written summary
ABA strongly induced Osem expression in Oc rice suspension cells.
- Taxon
- rice
Oryza sativae0 - Material
- Oc linee0
- Treatment
- ABAe0
- Outcome
- expressione0
- Direction
- strongly inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expression was strongly induced by ABA in the Oc line of rice suspension-cultured cells”
Claim · model-written summary
Osvp1 mRNA and OSVP1 protein levels were similar to or higher than developing embryos.
- Taxon
- RiceOryza sativat0
- Gene
- Osvp1 mRNAe0
- Outcome
- Osvp1 mRNA and OSVP1 proteine0
- Direction
- similar to or highere0
- Comparator
- developing embryose0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we detected Osvp1 mRNA and OSVP1 protein in the cultured cells at levels similar to or higher than those in developing embryos”
t0“Rice Suspension-Cultured Cells”
Claim · model-written summary
ABA did not affect total cellular OSVP1.
- Taxon
- RiceOryza sativat0
- Treatment
- ABAe0
- Outcome
- level of total cellular OSVP1e0
- Direction
- neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neither the level of total cellular OSVP1 nor that of nuclear OSVP1 protein was affected by ABA”
t0“Rice Suspension-Cultured Cells”
Claim · model-written summary
ABA did not affect nuclear OSVP1 protein.
- Taxon
- RiceOryza sativat0
- Treatment
- ABAe0
- Outcome
- nuclear OSVP1 proteine0
- Direction
- was affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neither the level of total cellular OSVP1 nor that of nuclear OSVP1 protein was affected by ABA”
t0“Rice Suspension-Cultured Cells”
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