Abstract
A hydroponics experiment was conducted to investigate the rice root growth in FACE (free-air carbon dioxide enrichment). The root biomass, root volume, ratio of root/shoot, number of adventitious roots and root diameter significantly increased under FACE conditions, while the CO2 enrichment decreased the N concentration in rice roots without any change in the C content, leading to an increase in root C:N ratio. Moreover, the elevated CO2 resulted in a remarkable decrease of root activity, expressed as per unit root dry weight, which might be responsible for decreased N concentration in roots.
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Claims 10
Claim · model-written summary
FACE significantly increased root biomass in rice.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- roote0
- Treatment
- FACE conditionse0
- Outcome
- root biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root biomass, root volume, ratio of root/shoot, number of adventitious roots and root diameter significantly increased under FACE conditions, while the CO2 enrichment decreased the N concentration in rice roots without any change in the C content, leading to an increase in root C:N ratio.”
Claim · model-written summary
FACE significantly increased root volume in rice.
- Taxon
- riceOryza sativae0
- Organ / stage
- roote0
- Treatment
- FACE conditionse0
- Outcome
- root volumee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root biomass, root volume, ratio of root/shoot, number of adventitious roots and root diameter significantly increased under FACE conditions, while the CO2 enrichment decreased the N concentration in rice roots without any change in the C content, leading to an increase in root C:N ratio.”
Claim · model-written summary
FACE significantly increased ratio of root/shoot in rice.
- Taxon
- riceOryza sativae0
- Organ / stage
- roote0
- Treatment
- FACE conditionse0
- Outcome
- ratio of root/shoote0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root biomass, root volume, ratio of root/shoot, number of adventitious roots and root diameter significantly increased under FACE conditions, while the CO2 enrichment decreased the N concentration in rice roots without any change in the C content, leading to an increase in root C:N ratio.”
Claim · model-written summary
FACE significantly increased number of adventitious roots in rice.
- Taxon
- riceOryza sativae0
- Organ / stage
- roote0
- Treatment
- FACE conditionse0
- Outcome
- number of adventitious rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root biomass, root volume, ratio of root/shoot, number of adventitious roots and root diameter significantly increased under FACE conditions, while the CO2 enrichment decreased the N concentration in rice roots without any change in the C content, leading to an increase in root C:N ratio.”
Claim · model-written summary
FACE significantly increased root diameter in rice.
- Taxon
- riceOryza sativae0
- Organ / stage
- roote0
- Treatment
- FACE conditionse0
- Outcome
- root diametere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root biomass, root volume, ratio of root/shoot, number of adventitious roots and root diameter significantly increased under FACE conditions, while the CO2 enrichment decreased the N concentration in rice roots without any change in the C content, leading to an increase in root C:N ratio.”
Claim · model-written summary
CO2 enrichment decreased N concentration in rice roots.
- Taxon
- riceOryza sativae0
- Treatment
- CO2 enrichmente0
- Outcome
- N concentration in rice rootse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root biomass, root volume, ratio of root/shoot, number of adventitious roots and root diameter significantly increased under FACE conditions, while the CO2 enrichment decreased the N concentration in rice roots without any change in the C content, leading to an increase in root C:N ratio.”
Claim · model-written summary
CO2 enrichment did not change C content in rice roots.
- Taxon
- riceOryza sativae0
- Organ / stage
- rice rootse0
- Treatment
- CO2 enrichmente0
- Outcome
- C contente0
- Direction
- without any changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root biomass, root volume, ratio of root/shoot, number of adventitious roots and root diameter significantly increased under FACE conditions, while the CO2 enrichment decreased the N concentration in rice roots without any change in the C content, leading to an increase in root C:N ratio.”
Claim · model-written summary
CO2 enrichment increased root C:N ratio.
- Taxon
- riceOryza sativae0
- Treatment
- CO2 enrichmente0
- Outcome
- root C:N ratioe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root biomass, root volume, ratio of root/shoot, number of adventitious roots and root diameter significantly increased under FACE conditions, while the CO2 enrichment decreased the N concentration in rice roots without any change in the C content, leading to an increase in root C:N ratio.”
Claim · model-written summary
Elevated CO2 decreased root activity per unit root dry weight.
- Taxon
- RiceOryza sativat0
- Treatment
- elevated CO2e0
- Outcome
- root activitye0
- Direction
- decreasee0
- Qualifier
- per unit root dry weighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moreover, the elevated CO2 resulted in a remarkable decrease of root activity, expressed as per unit root dry weight, which might be responsible for decreased N concentration in roots.”
t0“Rice”
Claim · model-written summary
The authors suggest reduced root activity might explain lower root N concentration.
- Taxon
- RiceOryza sativat0
- Outcome
- decreased N concentration in rootse0
- Qualifier
- decrease of root activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moreover, the elevated CO2 resulted in a remarkable decrease of root activity, expressed as per unit root dry weight, which might be responsible for decreased N concentration in roots.”
t0“Rice”
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