Abstract
Brassinosteroids (BRs) are plant steroidal hormones that regulate plant growth and development. An Arabidopsis dwarf mutant, shrink1-D (shk1-D), was isolated and the phenotype was shown to be caused by activation of the CYP72C1 gene. CYP72C1 is a member of the cytochrome P450 monooxygenase gene family similar to BAS1/CYP734A1 that regulates BR inactivation. shk1-D has short hypocotyls in both light and dark, and short petioles and siliques. The seeds are also shortened along the longitudinal axis indicating CYP72C1 controls cell elongation. The expression of CPD, TCH4 and BAS1 were altered in CYP72C1 overexpression transgenic lines and endogenous levels of castasterone, 6-deoxocastasterone and 6-deoxotyphasterol were also altered. Unlike BAS1/CYP734A1 the expression of CYP72C1 was not changed by application of exogenous brassinolide. We propose that CYP72C1 controls BR homeostasis by modulating the concentration of BRs.
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Claims 7
Claim · model-written summary
The shk1-D mutant has short hypocotyls in light and dark and short petioles and siliques.
- Taxon
- Arabidopsis
Arabidopsise1 - Material
- shk1-De2
- Outcome
- short hypocotyls in both light and dark, and short petioles and siliquese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“An Arabidopsis dwarf mutant, shrink1-D (shk1-D), was isolated and the phenotype was shown to be caused by activation of the CYP72C1 gene”
e2“shk1-D has short hypocotyls in both light and dark, and short petioles and siliques”
Claim · model-written summary
Seeds of shk1-D are shortened along the longitudinal axis.
- Taxon
- ArabidopsisArabidopsise1
- Organ / stage
- seedse3
- Outcome
- shortened along the longitudinal axise3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“An Arabidopsis dwarf mutant, shrink1-D (shk1-D), was isolated and the phenotype was shown to be caused by activation of the CYP72C1 gene”
e3“The seeds are also shortened along the longitudinal axis indicating CYP72C1 controls cell elongation”
Claim · model-written summary
CYP72C1 is suggested to control cell elongation.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- CYP72C1e3
- Outcome
- cell elongatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“An Arabidopsis dwarf mutant, shrink1-D (shk1-D), was isolated and the phenotype was shown to be caused by activation of the CYP72C1 gene”
e3“The seeds are also shortened along the longitudinal axis indicating CYP72C1 controls cell elongation”
Claim · model-written summary
CYP72C1 overexpression altered the expression of CPD, TCH4 and BAS1.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- CYP72C1 overexpression transgenic linese4
- Gene
- CPD, TCH4 and BAS1e4
- Outcome
- expression of CPD, TCH4 and BAS1e4
- Direction
- alterede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“An Arabidopsis dwarf mutant, shrink1-D (shk1-D), was isolated and the phenotype was shown to be caused by activation of the CYP72C1 gene”
e4“The expression of CPD, TCH4 and BAS1 were altered in CYP72C1 overexpression transgenic lines and endogenous levels of castasterone, 6-deoxocastasterone and 6-deoxotyphasterol were also altered”
Claim · model-written summary
CYP72C1 overexpression altered endogenous levels of castasterone, 6-deoxocastasterone and 6-deoxotyphasterol.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- CYP72C1 overexpression transgenic linese4
- Outcome
- endogenous levels of castasterone, 6-deoxocastasterone and 6-deoxotyphasterole4
- Direction
- alterede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“An Arabidopsis dwarf mutant, shrink1-D (shk1-D), was isolated and the phenotype was shown to be caused by activation of the CYP72C1 gene”
e4“The expression of CPD, TCH4 and BAS1 were altered in CYP72C1 overexpression transgenic lines and endogenous levels of castasterone, 6-deoxocastasterone and 6-deoxotyphasterol were also altered”
Claim · model-written summary
Exogenous brassinolide did not change CYP72C1 expression.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- application of exogenous brassinolidee5
- Gene
- CYP72C1e5
- Outcome
- expression of CYP72C1e5
- Direction
- not changede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“An Arabidopsis dwarf mutant, shrink1-D (shk1-D), was isolated and the phenotype was shown to be caused by activation of the CYP72C1 gene”
e5“Unlike BAS1/CYP734A1 the expression of CYP72C1 was not changed by application of exogenous brassinolide”
Claim · model-written summary
CYP72C1 is proposed to control BR homeostasis by modulating the concentration of BRs.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- CYP72C1e6
- Outcome
- BR homeostasise6
- Qualifier
- by modulating the concentration of BRse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“An Arabidopsis dwarf mutant, shrink1-D (shk1-D), was isolated and the phenotype was shown to be caused by activation of the CYP72C1 gene”
e6“We propose that CYP72C1 controls BR homeostasis by modulating the concentration of BRs”
The same questions in other papers
brassinolide · molecular: expression · ArabidopsisPositive and negative results
3 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.