Abstract
Elevated CO2 (eCO2) increase plant biomass and might lead to nutritional losses. The results showed that eCO2 under Fe-deficiency stimulates root dry weight from 0.37–0.80 g plant−1 and shoot dry weight from 0.82–2.10 g plant−1, without compromising root/shoot ratio. Besides, eCO2 improved the chlorophyl content of Fe-deficient plants. However, downregulation of photosynthesis, reduction in stomatal conductance and transpiration rate, and an increase in water-use efficiency was observed due to eCO2. Moreover, under Fe-deficiency, eCO2 decreased K and Mg in roots, and Mg in leaves, whereas increased P and Zn in roots and leaves. In Fe-sufficient plants, eCO2 increased K, P, Mn, Zn and Fe in leaves and did not change the concentration in roots. The Fe-deficiency-induced responses in roots, including the increase in FCR activity, and the expression of Fe-uptake genes were stimulated by eCO2, but were not sufficient to increase Fe concentration in Fe-deficient plants.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 13
Claim · model-written summary
Elevated CO2 increased root dry weight under Fe deficiency from 0.37 to 0.80 g per plant.
- Taxon
- soybean
Glycine maxt0 - Treatment
- eCO2 under Fe-deficiencye0
- Outcome
- root dry weighte0
- Direction
- stimulatese0
- Value
- 0.37–0.80 g plant−1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“eCO2 under Fe-deficiency stimulates root dry weight from 0.37–0.80 g plant−1”
t0“soybean”
Claim · model-written summary
Elevated CO2 increased shoot dry weight under Fe deficiency from 0.82 to 2.10 g per plant.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2 under Fe-deficiencye0
- Outcome
- shoot dry weighte0
- Direction
- stimulatese0
- Value
- 0.82–2.10 g plant−1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“eCO2 under Fe-deficiency stimulates root dry weight from 0.37–0.80 g plant−1 and shoot dry weight from 0.82–2.10 g plant−1”
t0“soybean”
Claim · model-written summary
Elevated CO2 did not compromise root to shoot ratio.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2 under Fe-deficiencye1
- Outcome
- root/shoot ratioe0
- Direction
- without compromisinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“without compromising root/shoot ratio”
e1“eCO2 under Fe-deficiency”
t0“soybean”
Claim · model-written summary
Elevated CO2 improved chlorophyll content of Fe-deficient plants.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2e0
- Outcome
- chlorophyl contente0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“eCO2 improved the chlorophyl content of Fe-deficient plants”
t0“soybean”
Claim · model-written summary
Elevated CO2 reduced photosynthesis, stomatal conductance and transpiration.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2e0
- Outcome
- photosynthesis, reduction in stomatal conductance and transpiration ratee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“downregulation of photosynthesis, reduction in stomatal conductance and transpiration rate, and an increase in water-use efficiency was observed due to eCO2”
t0“soybean”
Claim · model-written summary
Elevated CO2 increased water-use efficiency.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2e0
- Outcome
- water-use efficiencye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase in water-use efficiency was observed due to eCO2”
t0“soybean”
Claim · model-written summary
Under Fe deficiency, elevated CO2 decreased root K and Mg.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2e0
- Outcome
- K and Mg in rootse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under Fe-deficiency, eCO2 decreased K and Mg in roots”
t0“soybean”
Claim · model-written summary
Under Fe deficiency, elevated CO2 decreased leaf Mg.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2e0
- Outcome
- Mg in leavese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“eCO2 decreased K and Mg in roots, and Mg in leaves”
e1“Moreover, under Fe-deficiency”
t0“soybean”
Claim · model-written summary
Under Fe deficiency, elevated CO2 increased P and Zn in roots and leaves.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2e1
- Outcome
- P and Zn in roots and leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased P and Zn in roots and leaves”
e1“under Fe-deficiency, eCO2”
t0“soybean”
Claim · model-written summary
In Fe-sufficient plants, elevated CO2 increased leaf K, P, Mn, Zn and Fe.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2e0
- Outcome
- K, P, Mn, Zn and Fe in leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Fe-sufficient plants, eCO2 increased K, P, Mn, Zn and Fe in leaves”
t0“soybean”
Claim · model-written summary
In Fe-sufficient plants, elevated CO2 did not change root nutrient concentration.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2e1
- Outcome
- concentration in rootse0
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“did not change the concentration in roots”
e1“In Fe-sufficient plants, eCO2”
t0“soybean”
Claim · model-written summary
Elevated CO2 stimulated Fe-deficiency-induced FCR activity and Fe-uptake gene expression in roots.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2e0
- Outcome
- FCR activity, and the expression of Fe-uptake genese0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Fe-deficiency-induced responses in roots, including the increase in FCR activity, and the expression of Fe-uptake genes were stimulated by eCO2”
t0“soybean”
Claim · model-written summary
Elevated CO2 did not increase Fe concentration in Fe-deficient plants.
- Taxon
- soybeanGlycine maxt0
- Treatment
- eCO2e1
- Outcome
- Fe concentratione0
- Direction
- not sufficient to increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were not sufficient to increase Fe concentration in Fe-deficient plants”
e1“stimulated by eCO2”
t0“soybean”
The same questions in other papers
co2 · physiology: photosynthesis · Glycine max (soybean)Results differ
13 papers in the same direction as this paper · 50 in the opposite direction
- positive
- positive
- positive
60 papers more in this group
See all 64 papers →co2 · molecular: expression · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 8 in the opposite direction
- no effect
- negative
- negative
7 papers more in this group
See all 11 papers →co2 · physiology: water · Glycine max (soybean)Positive and negative results
13 papers in the same direction as this paper · 4 in the opposite direction
- positive
- negative
- no effect
14 papers more in this group
See all 18 papers →co2 · molecular: metabolites · Glycine max (soybean)Positive and negative results
14 papers in the same direction as this paper · 7 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
19 papers more in this group
See all 23 papers →co2 · nutrient: content · Glycine max (soybean)Positive and negative results
11 papers in the same direction as this paper · 14 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
23 papers more in this group
See all 27 papers →co2 · growth · Glycine max (soybean)Positive and negative results
82 papers in the same direction as this paper · 16 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- positive
- positive
97 papers more in this group
See all 101 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.