Abstract
The Arabidopsis mutant ttg lacks both trichomes (epidermal hairs) and anthocyanin pigments. Trichomes and anthocyanins are restored by the constitutive expression of the maize transcriptional regulator (R). The expression of an R-glucocorticoid receptor chimeric protein results in a steroid hormone-dependent, conditional allele of R that functions in whole Arabidopsis plants. The response of the chimeric protein to pulses of hormone was used to define the pattern and timing of trichome formation on the developing leaf epidermis. Each adaxial epidermal leaf cell appears to have an equal probability of differentiating into a trichome; there is a temporal zone of decision for trichome cell fate that proceeds as a wave from the tip to the base of developing leaves.
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Claims 5
Claim · model-written summary
The ttg mutant lacks trichomes and anthocyanins.
- Taxon
- Arabidopsis
Arabidopsise0 - Material
- ttge0
- Outcome
- lacks both trichomes (epidermal hairs) and anthocyanin pigmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis mutant ttg lacks both trichomes (epidermal hairs) and anthocyanin pigments”
Claim · model-written summary
Constitutive maize R expression restores trichomes and anthocyanins.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- constitutive expression of the maize transcriptional regulator (R)e0
- Gene
- maize transcriptional regulator (R)e0
- Outcome
- Trichomes and anthocyaninse0
- Direction
- restorede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trichomes and anthocyanins are restored by the constitutive expression of the maize transcriptional regulator (R)”
e1“Arabidopsis”
Claim · model-written summary
R glucocorticoid receptor expression produces a steroid dependent conditional R allele active in whole Arabidopsis plants.
- Taxon
- ArabidopsisArabidopsise0
- Gene
- R-glucocorticoid receptor chimeric proteine0
- Outcome
- steroid hormone-dependent, conditional allele of Re0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of an R-glucocorticoid receptor chimeric protein results in a steroid hormone-dependent, conditional allele of R that functions in whole Arabidopsis plants”
Claim · model-written summary
Each adaxial epidermal leaf cell appears equally likely to form a trichome.
- Taxon
- ArabidopsisArabidopsise1
- Organ / stage
- adaxial epidermal leaf celle0
- Outcome
- equal probability of differentiating into a trichomee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Each adaxial epidermal leaf cell appears to have an equal probability of differentiating into a trichome”
e1“Arabidopsis”
Claim · model-written summary
The trichome fate decision zone moves from leaf tip to base.
- Taxon
- ArabidopsisArabidopsise1
- Organ / stage
- developing leavese0
- Outcome
- temporal zone of decision for trichome cell fatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is a temporal zone of decision for trichome cell fate that proceeds as a wave from the tip to the base of developing leaves”
e1“Arabidopsis”
The same questions in other papers
overexpression · quality: phytochemicals · ArabidopsisPositive and negative results
7 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
6 papers more in this group
See all 10 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.