Abstract
The plant hormone ethylene plays a role in various growth related processes. In this detailed study of the vegetative growth of Arabidopsis, Nicotiana tabacum, and Petunia x hybrida plants, we show that ethylene insensitivity does not result in an increased total leaf area or relative growth rate (RGR) under optimal growth conditions. When grown in semiclosed containers, leaf area of ethylene-insensitive plants was larger compared to the wild type. This effect was caused by a buildup of ethylene inside these containers, which inhibited the growth of wild-type plants. Ethylene-insensitive Arabidopsis and N. tabacum plants had a lower biomass, which was mainly the result of a smaller seed mass. RGR of vegetative plants was not affected by ethylene insensitivity, but the underlying components of RGR differed; specific leaf area (leaf area per unit leaf mass) was higher, and unit leaf rate (growth rate per unit leaf area) was lower. The latter was a result of a slower rate of photosynthesis per unit leaf area in the ethylene-insensitive plants.
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Claims 9
Claim · model-written summary
Ethylene insensitivity did not increase total leaf area or relative growth rate under optimal conditions.
- Taxon
- Arabidopsis
Arabidopsise0 - Treatment
- ethylene insensitivitye0
- Outcome
- total leaf area or relative growth rate (RGR)e0
- Direction
- does not result in an increasede0
- Qualifier
- under optimal growth conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In this detailed study of the vegetative growth of Arabidopsis, Nicotiana tabacum, and Petunia x hybrida plants, we show that ethylene insensitivity does not result in an increased total leaf area or relative growth rate (RGR) under optimal growth conditions.”
Claim · model-written summary
Ethylene-insensitive plants had larger leaf area than wild type in semiclosed containers.
Verbatim
e0“When grown in semiclosed containers, leaf area of ethylene-insensitive plants was larger compared to the wild type.”
Claim · model-written summary
Ethylene buildup in semiclosed containers inhibited wild-type growth, explaining the leaf-area contrast.
Verbatim
e0“This effect was caused by a buildup of ethylene inside these containers, which inhibited the growth of wild-type plants.”
Claim · model-written summary
Ethylene-insensitive Arabidopsis had lower biomass, mainly due to smaller seed mass.
- Taxon
- ArabidopsisArabidopsise0
- Treatment
- Ethylene-insensitivee0
- Outcome
- biomasse0
- Direction
- lowere0
- Qualifier
- mainly the result of a smaller seed masse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene-insensitive Arabidopsis and N. tabacum plants had a lower biomass, which was mainly the result of a smaller seed mass.”
Claim · model-written summary
Ethylene-insensitive N. tabacum had lower biomass, mainly due to smaller seed mass.
- Taxon
- N. tabacum
Nicotiana tabacume0 - Treatment
- Ethylene-insensitivee0
- Outcome
- biomasse0
- Direction
- lowere0
- Qualifier
- mainly the result of a smaller seed masse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene-insensitive Arabidopsis and N. tabacum plants had a lower biomass, which was mainly the result of a smaller seed mass.”
Claim · model-written summary
Ethylene insensitivity did not change vegetative relative growth rate.
- Taxon
- plantsViridiplantaee0
- Treatment
- ethylene insensitivitye0
- Outcome
- RGR of vegetative plantse0
- Direction
- not affectede0
Not reportedComparator
Verbatim
e0“RGR of vegetative plants was not affected by ethylene insensitivity, but the underlying components of RGR differed; specific leaf area (leaf area per unit leaf mass) was higher, and unit leaf rate (growth rate per unit leaf area) was lower.”
Claim · model-written summary
Specific leaf area was higher in ethylene-insensitive plants.
- Taxon
- plantsViridiplantaee1
- Treatment
- ethylene-insensitivee1
- Outcome
- specific leaf areae0
- Direction
- highere0
Not reportedComparator
Verbatim
e0“RGR of vegetative plants was not affected by ethylene insensitivity, but the underlying components of RGR differed; specific leaf area (leaf area per unit leaf mass) was higher, and unit leaf rate (growth rate per unit leaf area) was lower.”
e1“The latter was a result of a slower rate of photosynthesis per unit leaf area in the ethylene-insensitive plants.”
Claim · model-written summary
Unit leaf rate was lower in ethylene-insensitive plants.
- Taxon
- plantsViridiplantaee1
- Treatment
- ethylene-insensitivee1
- Outcome
- unit leaf ratee0
- Direction
- lowere0
Not reportedComparator
Verbatim
e0“RGR of vegetative plants was not affected by ethylene insensitivity, but the underlying components of RGR differed; specific leaf area (leaf area per unit leaf mass) was higher, and unit leaf rate (growth rate per unit leaf area) was lower.”
e1“The latter was a result of a slower rate of photosynthesis per unit leaf area in the ethylene-insensitive plants.”
Claim · model-written summary
Ethylene-insensitive plants had slower photosynthesis per unit leaf area.
- Taxon
- plantsViridiplantaee0
- Treatment
- ethylene-insensitivee0
- Outcome
- rate of photosynthesis per unit leaf areae0
- Direction
- slowere0
Not reportedComparator
Verbatim
e0“The latter was a result of a slower rate of photosynthesis per unit leaf area in the ethylene-insensitive plants.”
The same questions in other papers
ethene · growth · ArabidopsisResults differ
8 papers in the same direction as this paper · 17 in the opposite direction
- positive
- positive
- positive
22 papers more in this group
See all 26 papers →ethene · growth · Viridiplantae (plants)Results agree
1 paper in the same direction as this paper
- negative
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.