Abstract
The local environment has a substantial impact on early seedling development. Applying excess carbon in the form of sucrose is known to alter both the timing and duration of seedling growth. Here, we show that sucrose changes growth patterns by increasing auxin levels and rootward auxin transport in Arabidopsis (Arabidopsis thaliana). Sucrose likely interacts with an endogenous carbon-sensing pathway via the PHYTOCHROME-INTERACTING FACTOR (PIF) family of transcription factors, as plants grown in elevated carbon dioxide showed the same PIF-dependent growth promotion. Overexpression of PIF5 was sufficient to suppress photosynthetic rate, enhance response to elevated carbon dioxide, and prolong seedling survival in nitrogen-limiting conditions. Thus, PIF transcription factors integrate growth with metabolic demands and thereby facilitate functional equilibrium during photomorphogenesis.
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Claims 7
Claim · model-written summary
Sucrose increased auxin levels in Arabidopsis.
- Taxon
- Arabidopsis
Arabidopsise0 - Treatment
- sucrosee0
- Outcome
- auxin levelse0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sucrose changes growth patterns by increasing auxin levels and rootward auxin transport in Arabidopsis (Arabidopsis thaliana)”
Claim · model-written summary
Sucrose increased rootward auxin transport in Arabidopsis.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- sucrosee0
- Outcome
- rootward auxin transporte0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sucrose changes growth patterns by increasing auxin levels and rootward auxin transport in Arabidopsis (Arabidopsis thaliana)”
Claim · model-written summary
Sucrose changed Arabidopsis growth patterns through increased auxin levels and rootward transport.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- sucrosee0
- Compound
- auxine0
- Outcome
- growth patternse0
- Qualifier
- by increasing auxin levels and rootward auxin transporte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sucrose changes growth patterns by increasing auxin levels and rootward auxin transport in Arabidopsis (Arabidopsis thaliana)”
Claim · model-written summary
Elevated carbon dioxide promoted PIF-dependent growth.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- elevated carbon dioxidee0
- Gene
- PIFe0
- Outcome
- growthe0
- Direction
- promotione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants grown in elevated carbon dioxide showed the same PIF-dependent growth promotion”
e1“sucrose changes growth patterns by increasing auxin levels and rootward auxin transport in Arabidopsis (Arabidopsis thaliana)”
Claim · model-written summary
PIF5 overexpression suppressed photosynthetic rate.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- Overexpression of PIF5e0
- Gene
- PIF5e0
- Outcome
- photosynthetic ratee0
- Direction
- suppresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overexpression of PIF5 was sufficient to suppress photosynthetic rate”
e1“sucrose changes growth patterns by increasing auxin levels and rootward auxin transport in Arabidopsis (Arabidopsis thaliana)”
Claim · model-written summary
PIF5 overexpression enhanced the response to elevated carbon dioxide.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- Overexpression of PIF5e0
- Gene
- PIF5e0
- Outcome
- response to elevated carbon dioxidee0
- Direction
- enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overexpression of PIF5 was sufficient to suppress photosynthetic rate, enhance response to elevated carbon dioxide”
e1“sucrose changes growth patterns by increasing auxin levels and rootward auxin transport in Arabidopsis (Arabidopsis thaliana)”
Claim · model-written summary
PIF5 overexpression prolonged seedling survival under nitrogen limitation.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- Overexpression of PIF5e0
- Gene
- PIF5e0
- Outcome
- seedling survivale0
- Direction
- prolonge0
- Qualifier
- nitrogen-limiting conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overexpression of PIF5 was sufficient to suppress photosynthetic rate, enhance response to elevated carbon dioxide, and prolong seedling survival in nitrogen-limiting conditions”
e1“sucrose changes growth patterns by increasing auxin levels and rootward auxin transport in Arabidopsis (Arabidopsis thaliana)”
The same questions in other papers
co2 · growth · ArabidopsisPositive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
3 papers more in this group
See all 7 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.