Abstract
The role of gibberellins in plant morphology under selective light was studied. A comparison of the effects of green and blue light on growth, development, and hormonal balance was performed for two Arabidopsis thaliana (L.) Heynh. (ecotype Landsberg erecta lines: wild type Ler and its ga4-1 mutant with suppressed GA4/1 synthesis. The absence of active GA4/1 from ga4-1 mutant determined its retarded growth, slowed passing through developmental phases, suppressed apical dominance, and reduced seed productivity. The retarded growth and development of the mutant was related to changed hormonal balance in them as compared to wild-type line: IAA content and the IAA/ABA ratio were declined, zeatin riboside and ABA accumulated. Green light retarded stem elongation and branching, reduced leaf specific surface density and plant seed productivity, and retarded plant transition to reproduction to a greater degree at GA4/1 deficit (ga4-1) than at its normal content (Ler).
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Claims 9
Claim · model-written summary
The ga4-1 mutant had retarded growth relative to wild type.
- Taxon
- Arabidopsis thaliana (L.) Heynh.
Arabidopsis thalianae1 - Material
- ga4-1 mutante0
- Gene
- GA4/1e0
- Outcome
- growthe0
- Direction
- retardede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The absence of active GA4/1 from ga4-1 mutant determined its retarded growth”
e1“Arabidopsis thaliana (L.) Heynh.”
Claim · model-written summary
The ga4-1 mutant passed through developmental phases more slowly.
- Taxon
- Arabidopsis thaliana (L.) Heynh.Arabidopsis thalianae1
- Material
- ga4-1 mutante0
- Outcome
- passing through developmental phasese0
- Direction
- slowede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ga4-1 mutant determined its retarded growth, slowed passing through developmental phases”
e1“Arabidopsis thaliana (L.) Heynh.”
Claim · model-written summary
The ga4-1 mutant had suppressed apical dominance.
- Taxon
- Arabidopsis thaliana (L.) Heynh.Arabidopsis thalianae1
- Material
- ga4-1 mutante0
- Outcome
- apical dominancee0
- Direction
- suppressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ga4-1 mutant determined its retarded growth, slowed passing through developmental phases, suppressed apical dominance”
e1“Arabidopsis thaliana (L.) Heynh.”
Claim · model-written summary
The ga4-1 mutant had reduced seed productivity.
- Taxon
- Arabidopsis thaliana (L.) Heynh.Arabidopsis thalianae1
- Material
- ga4-1 mutante0
- Outcome
- seed productivitye0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ga4-1 mutant determined its retarded growth, slowed passing through developmental phases, suppressed apical dominance, and reduced seed productivity”
e1“Arabidopsis thaliana (L.) Heynh.”
Claim · model-written summary
IAA content and the IAA/ABA ratio declined in ga4-1 relative to wild type.
- Taxon
- Arabidopsis thaliana (L.) Heynh.Arabidopsis thalianae1
- Material
- mutante0
- Outcome
- IAA content and the IAA/ABA ratioe0
- Direction
- declinede0
- Comparator
- wild-type linee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The retarded growth and development of the mutant was related to changed hormonal balance in them as compared to wild-type line: IAA content and the IAA/ABA ratio were declined”
e1“Arabidopsis thaliana (L.) Heynh.”
Claim · model-written summary
Zeatin riboside and ABA accumulated in the mutant relative to wild type.
- Taxon
- Arabidopsis thaliana (L.) Heynh.Arabidopsis thalianae1
- Material
- mutante2
- Outcome
- zeatin riboside and ABAe0
- Direction
- accumulatede0
- Comparator
- wild-type linee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as compared to wild-type line: IAA content and the IAA/ABA ratio were declined, zeatin riboside and ABA accumulated”
e1“Arabidopsis thaliana (L.) Heynh.”
e2“The retarded growth and development of the mutant was related to changed hormonal balance”
Claim · model-written summary
Green light retarded stem elongation and branching, more strongly in ga4-1 than Ler.
- Taxon
- Arabidopsis thaliana (L.) Heynh.Arabidopsis thalianae1
- Material
- ga4-1e0
- Treatment
- Green lighte0
- Outcome
- stem elongation and branchinge0
- Direction
- retardede0
- Comparator
- Lere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Green light retarded stem elongation and branching, reduced leaf specific surface density and plant seed productivity, and retarded plant transition to reproduction to a greater degree at GA4/1 deficit (ga4-1) than at its normal content (Ler)”
e1“Arabidopsis thaliana (L.) Heynh.”
Claim · model-written summary
Green light reduced leaf specific surface density and seed productivity, more strongly in ga4-1 than Ler.
- Taxon
- Arabidopsis thaliana (L.) Heynh.Arabidopsis thalianae1
- Material
- ga4-1e0
- Treatment
- Green lighte0
- Outcome
- leaf specific surface density and plant seed productivitye0
- Direction
- reducede0
- Comparator
- Lere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Green light retarded stem elongation and branching, reduced leaf specific surface density and plant seed productivity, and retarded plant transition to reproduction to a greater degree at GA4/1 deficit (ga4-1) than at its normal content (Ler)”
e1“Arabidopsis thaliana (L.) Heynh.”
Claim · model-written summary
Green light retarded transition to reproduction, more strongly in ga4-1 than Ler.
- Taxon
- Arabidopsis thaliana (L.) Heynh.Arabidopsis thalianae1
- Material
- ga4-1e0
- Treatment
- Green lighte0
- Outcome
- plant transition to reproductione0
- Direction
- retardede0
- Comparator
- Lere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Green light retarded stem elongation and branching, reduced leaf specific surface density and plant seed productivity, and retarded plant transition to reproduction to a greater degree at GA4/1 deficit (ga4-1) than at its normal content (Ler)”
e1“Arabidopsis thaliana (L.) Heynh.”
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See all 8 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.