Abstract
The role of gibberellins in flower bud development was investigated by studying the gib-1 mutant of tomato, Lycopersicon esculentum. This gibberellin-deficient mutant initiates flower buds, but floral development is not completed unless the mutant is treated with gibberellin. Treatment with other plant growth regulators does not induce normal flower development. Development of gib-1 flower buds, as measured by progress toward anthesis, ceases at a bud length of 2.5 millimeters; however, increase in size of the bud continues. Buds between 2.5 and 3.7 millimeters are developmentally arrested but still are capable of developing normally after treatment with gibberellic acid. Anthers of these developmentally arrested buds contain pollen mother cells that are in the G1 phase of premeiotic interphase. Following treatment of developmentally arrested buds with gibberellic acid, premeiotic DNA synthesis and callose accumulation in pollen mother cells are evident by 48 hours posttreatment, and within 66 hours, prophase I of meiosis- and meiosis-related changes in tapetum development are observable.
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Claims 8
Claim · model-written summary
Floral development of the gib-1 mutant is not completed unless the mutant is treated with gibberellin.
- Taxon
- tomato
Solanum lycopersicume0 - Material
- gib-1e0
- Treatment
- treated with gibberelline1
- Outcome
- floral developmente1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gib-1 mutant of tomato, Lycopersicon esculentum”
e1“floral development is not completed unless the mutant is treated with gibberellin”
Claim · model-written summary
Treatment with other plant growth regulators does not induce normal flower development in gib-1.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- gib-1e0
- Treatment
- other plant growth regulatorse2
- Outcome
- normal flower developmente2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gib-1 mutant of tomato, Lycopersicon esculentum”
e2“Treatment with other plant growth regulators does not induce normal flower development”
Claim · model-written summary
Development of gib-1 flower buds, as measured by progress toward anthesis, ceases at a bud length of 2.5 millimeters.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- gib-1e0
- Organ / stage
- flower budse3
- Outcome
- progress toward anthesise3
- Value
- 2.5 millimeterse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gib-1 mutant of tomato, Lycopersicon esculentum”
e3“Development of gib-1 flower buds, as measured by progress toward anthesis, ceases at a bud length of 2.5 millimeters”
Claim · model-written summary
Bud size of gib-1 flower buds continues to increase after development ceases.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- gib-1e0
- Organ / stage
- bude4
- Outcome
- increase in size of the bude4
- Direction
- increasee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gib-1 mutant of tomato, Lycopersicon esculentum”
e4“however, increase in size of the bud continues”
Claim · model-written summary
Buds of 2.5 to 3.7 millimeters are developmentally arrested but still develop normally after treatment with gibberellic acid.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- Budse5
- Treatment
- gibberellic acide5
- Outcome
- developing normallye5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gib-1 mutant of tomato, Lycopersicon esculentum”
e5“Buds between 2.5 and 3.7 millimeters are developmentally arrested but still are capable of developing normally after treatment with gibberellic acid”
Claim · model-written summary
Anthers of developmentally arrested buds contain pollen mother cells in the G1 phase of premeiotic interphase.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- Antherse6
- Outcome
- G1 phase of premeiotic interphasee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gib-1 mutant of tomato, Lycopersicon esculentum”
e6“Anthers of these developmentally arrested buds contain pollen mother cells that are in the G1 phase of premeiotic interphase”
Claim · model-written summary
Gibberellic acid treatment of arrested buds makes premeiotic DNA synthesis and callose accumulation in pollen mother cells evident by 48 hours.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- pollen mother cellse7
- Treatment
- gibberellic acide7
- Outcome
- premeiotic DNA synthesis and callose accumulatione7
- Qualifier
- by 48 hours posttreatmente7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gib-1 mutant of tomato, Lycopersicon esculentum”
e7“Following treatment of developmentally arrested buds with gibberellic acid, premeiotic DNA synthesis and callose accumulation in pollen mother cells are evident by 48 hours posttreatment”
Claim · model-written summary
Gibberellic acid treatment of arrested buds makes prophase I of meiosis and meiosis-related changes in tapetum development observable within 66 hours.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- tapetume7
- Treatment
- gibberellic acide7
- Outcome
- prophase I of meiosis- and meiosis-related changes in tapetum developmente7
- Qualifier
- within 66 hourse7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gib-1 mutant of tomato, Lycopersicon esculentum”
e7“Following treatment of developmentally arrested buds with gibberellic acid, premeiotic DNA synthesis and callose accumulation in pollen mother cells are evident by 48 hours posttreatment, and within 66 hours, prophase I of meiosis- and meiosis-related changes in tapetum development are observable”
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See all 53 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.