Abstract
The objective of this study was to evaluate the effects of elevated carbon dioxide and sucrose concentrations on Arabidopsis thaliana L. Heynh root growth, morphology, and architecture. Two levels of CO 2 , 360 (ambient) and 900 (elevated) μmol·mol –1 , and various sucrose concentrations were used. A. thaliana plants grown on a phytagar medium in small chambers with elevated CO 2 had longer roots, more lateral root growth and a more dichotomous branching pattern than plants grown in ambient CO 2 . Roots in elevated CO 2 had wider root diameters, and showed considerably more secondary growth such as larger diameter vascular cylinders and better-developed periderm. Addition of sucrose to the media closely resembled the effects of elevated CO 2 . Further, the increase in sucrose concentration had a more pronounced effect on root morphology under ambient, than elevated CO 2 . Thus, both elevated CO 2 and increased sucrose concentrations promote root growth by increasing their number, length, and diameter, and by changing the branching pattern from herringbone to dichotomous.
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Claims 8
Claim · model-written summary
Elevated CO2 made Arabidopsis roots longer than ambient CO2.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Treatment
- elevated CO 2e1
- Outcome
- rootse1
- Direction
- longere1
- Comparator
- ambient CO 2e1
- Setting
- small chamberse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on Arabidopsis thaliana L. Heynh root growth”
e1“A. thaliana plants grown on a phytagar medium in small chambers with elevated CO 2 had longer roots, more lateral root growth and a more dichotomous branching pattern than plants grown in ambient CO 2”
Claim · model-written summary
Elevated CO2 increased lateral root growth of Arabidopsis compared with ambient CO2.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- elevated CO 2e1
- Outcome
- lateral root growthe1
- Direction
- moree1
- Comparator
- ambient CO 2e1
- Setting
- small chamberse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on Arabidopsis thaliana L. Heynh root growth”
e1“A. thaliana plants grown on a phytagar medium in small chambers with elevated CO 2 had longer roots, more lateral root growth and a more dichotomous branching pattern than plants grown in ambient CO 2”
Claim · model-written summary
Elevated CO2 changed the Arabidopsis root branching pattern to a more dichotomous one than ambient CO2.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- elevated CO 2e1
- Outcome
- branching patterne1
- Direction
- more dichotomouse1
- Comparator
- ambient CO 2e1
- Setting
- small chamberse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on Arabidopsis thaliana L. Heynh root growth”
e1“A. thaliana plants grown on a phytagar medium in small chambers with elevated CO 2 had longer roots, more lateral root growth and a more dichotomous branching pattern than plants grown in ambient CO 2”
Claim · model-written summary
Elevated CO2 gave Arabidopsis roots wider diameters.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- elevated CO 2e1
- Outcome
- root diameterse1
- Direction
- widere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on Arabidopsis thaliana L. Heynh root growth”
e1“Roots in elevated CO 2 had wider root diameters, and showed considerably more secondary growth such as larger diameter vascular cylinders and better-developed periderm”
Claim · model-written summary
Elevated CO2 gave Arabidopsis roots considerably more secondary growth.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- elevated CO 2e1
- Outcome
- secondary growthe1
- Direction
- considerably moree1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on Arabidopsis thaliana L. Heynh root growth”
e1“Roots in elevated CO 2 had wider root diameters, and showed considerably more secondary growth such as larger diameter vascular cylinders and better-developed periderm”
Claim · model-written summary
Adding sucrose to the media closely resembled the effects of elevated CO2 on Arabidopsis root morphology.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- Addition of sucrose to the mediae1
- Outcome
- root morphologye2
- Direction
- closely resemblede1
- Comparator
- elevated CO 2e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on Arabidopsis thaliana L. Heynh root growth”
e1“Addition of sucrose to the media closely resembled the effects of elevated CO 2”
e2“the increase in sucrose concentration had a more pronounced effect on root morphology under ambient, than elevated CO 2”
Claim · model-written summary
Increasing sucrose had a more pronounced effect on Arabidopsis root morphology under ambient CO2 than under elevated CO2.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- increase in sucrose concentratione1
- Outcome
- root morphologye1
- Direction
- more pronouncede1
- Comparator
- elevated CO 2e1
- Setting
- ambiente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on Arabidopsis thaliana L. Heynh root growth”
e1“the increase in sucrose concentration had a more pronounced effect on root morphology under ambient, than elevated CO 2”
Claim · model-written summary
Elevated CO2 and increased sucrose both promote Arabidopsis root growth by increasing root number, length and diameter.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- elevated CO 2 and increased sucrose concentrationse1
- Outcome
- root growthe1
- Direction
- promotee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on Arabidopsis thaliana L. Heynh root growth”
e1“both elevated CO 2 and increased sucrose concentrations promote root growth by increasing their number, length, and diameter”
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See all 25 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.