Abstract
ABSTRACT The monopteros (mp) gene contributes to apical-basal pattern formation in the Arabidopsis embryo. mp mutant seedlings lack basal body structures such as hypocotyl, radicle and root meristem, and this pattern deletion has been traced back to alterations in the octant-stage embryo. Cells of the embryo proper and the uppermost cell of the suspensor fail to establish division patterns that would normally generate the basal body structures. The resulting absence of a morphological axis seems to be responsible for another phenotypic trait of mp seedlings, variable positioning of cotyledons. This relationship is suggested by weak mp seedling phenotypes in which the presence of a short hypocotyl is correlated with normal arrangement of cotyledons. Root formation has been induced in mp seedlings grown in tissue culture. This result supports the notion that the mp gene is required for organising the basal body region, rather than for making the root, in the developing embryo.
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Claims 7
Claim · model-written summary
mp mutant seedlings lack hypocotyl, radicle and root meristem structures.
- Taxon
- Arabidopsis
Arabidopsise1 - Material
- mp mutant seedlingse0
- Gene
- mpe0
- Outcome
- lack basal body structures such as hypocotyl, radicle and root meristeme0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mp mutant seedlings lack basal body structures such as hypocotyl, radicle and root meristem”
e1“Arabidopsis embryo”
Claim · model-written summary
The basal body pattern deletion traces back to octant-stage embryo alterations.
- Taxon
- ArabidopsisArabidopsise1
- Organ / stage
- octant-stage embryoe0
- Outcome
- pattern deletione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this pattern deletion has been traced back to alterations in the octant-stage embryo”
e1“Arabidopsis embryo”
Claim · model-written summary
Embryo proper and uppermost suspensor cells fail to establish divisions generating basal body structures.
- Taxon
- ArabidopsisArabidopsise1
- Organ / stage
- embryo proper and the uppermost cell of the suspensore0
- Outcome
- fail to establish division patternse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cells of the embryo proper and the uppermost cell of the suspensor fail to establish division patterns that would normally generate the basal body structures.”
e1“Arabidopsis embryo”
Claim · model-written summary
The authors suggest absence of a morphological axis explains variable cotyledon positioning in mp seedlings.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- mpe0
- Outcome
- variable positioning of cotyledonse0
- Qualifier
- absence of a morphological axise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The resulting absence of a morphological axis seems to be responsible for another phenotypic trait of mp seedlings, variable positioning of cotyledons.”
e1“Arabidopsis embryo”
Claim · model-written summary
A short hypocotyl correlates with normal cotyledon arrangement in weak mp seedlings.
- Taxon
- ArabidopsisArabidopsise1
- Material
- weak mp seedling phenotypese0
- Organ / stage
- short hypocotyle0
- Outcome
- normal arrangement of cotyledonse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weak mp seedling phenotypes in which the presence of a short hypocotyl is correlated with normal arrangement of cotyledons”
e1“Arabidopsis embryo”
Claim · model-written summary
Root formation was induced in mp seedlings grown in tissue culture.
- Taxon
- ArabidopsisArabidopsise1
- Material
- mp seedlingse0
- Treatment
- grown in tissue culturee0
- Outcome
- Root formatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root formation has been induced in mp seedlings grown in tissue culture.”
e1“Arabidopsis embryo”
Claim · model-written summary
The authors infer that mp organizes the basal body region rather than making the root.
- Taxon
- ArabidopsisArabidopsise1
- Organ / stage
- developing embryoe0
- Gene
- mp genee0
- Outcome
- organising the basal body regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the mp gene is required for organising the basal body region, rather than for making the root, in the developing embryo”
e1“Arabidopsis embryo”
The same questions in other papers
in vitro · growth · ArabidopsisPositive and negative results
10 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
13 papers more in this group
See all 17 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.