Abstract
ABSTRACT The primary shoot apical meristem of Arabidopsis is initiated late in embryogenesis, after the initiation of the cotyledons. We have identified a gene, called SHOOT MERISTEMLESS, which is critical for this process. shoot meristemless mutant seedlings lack a shoot apical meristem but are otherwise healthy and viable. The anatomy of mutant embryos demonstrates that the shoot meristemless-1 mutation completely blocks the initiation of the shoot apical meristem, but has no other obvious effects on embryo development. The failure of shoot meristemless tissue to regenerate shoots in tissue culture suggests that this gene regulates adventitious shoot meristem formation, as well as embryonic shoot meristem formation.
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Claims 7
Claim · model-written summary
The primary Arabidopsis shoot apical meristem is initiated late in embryogenesis after the cotyledons.
- Taxon
- Arabidopsis
Arabidopsise0 - Organ / stage
- late in embryogenesis, after the initiation of the cotyledonse0
- Outcome
- primary shoot apical meristeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The primary shoot apical meristem of Arabidopsis is initiated late in embryogenesis, after the initiation of the cotyledons”
Claim · model-written summary
SHOOT MERISTEMLESS was identified as critical for shoot meristem initiation.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- SHOOT MERISTEMLESSe0
- Outcome
- shoot apical meristeme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We have identified a gene, called SHOOT MERISTEMLESS, which is critical for this process”
e1“shoot apical meristem of Arabidopsis”
Claim · model-written summary
Shoot meristemless mutant seedlings lack a shoot apical meristem.
- Taxon
- ArabidopsisArabidopsise1
- Material
- shoot meristemless mutante0
- Outcome
- lack a shoot apical meristeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoot meristemless mutant seedlings lack a shoot apical meristem but are otherwise healthy and viable”
e1“Arabidopsis”
Claim · model-written summary
The mutant seedlings were otherwise healthy and viable.
- Taxon
- ArabidopsisArabidopsise1
- Material
- shoot meristemless mutante0
- Outcome
- otherwise healthy and viablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoot meristemless mutant seedlings lack a shoot apical meristem but are otherwise healthy and viable”
e1“Arabidopsis”
Claim · model-written summary
The shoot meristemless-1 mutation completely blocked embryonic shoot meristem initiation.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- shoot meristemless-1 mutatione0
- Outcome
- initiation of the shoot apical meristeme0
- Direction
- completely blockse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the shoot meristemless-1 mutation completely blocks the initiation of the shoot apical meristem, but has no other obvious effects on embryo development”
e1“Arabidopsis”
Claim · model-written summary
The shoot meristemless-1 mutation had no other obvious effects on embryo development.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- shoot meristemless-1 mutatione0
- Outcome
- embryo developmente0
- Direction
- no other obvious effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the shoot meristemless-1 mutation completely blocks the initiation of the shoot apical meristem, but has no other obvious effects on embryo development”
e1“Arabidopsis”
Claim · model-written summary
Shoot meristemless tissue failed to regenerate shoots in culture, suggesting a role in adventitious meristem formation.
- Taxon
- ArabidopsisArabidopsise1
- Material
- shoot meristemlesse0
- Outcome
- failure of shoot meristemless tissue to regenerate shootse0
- Qualifier
- suggests that this gene regulates adventitious shoot meristem formatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The failure of shoot meristemless tissue to regenerate shoots in tissue culture suggests that this gene regulates adventitious shoot meristem formation”
e1“Arabidopsis”
The same questions in other papers
loss of function · growth · ArabidopsisPositive and negative results
182 papers in the same direction as this paper · 51 in the opposite direction
- negative
- positive
- positive
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See all 234 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.