Abstract
Aim: To compare the relative performance of two contrasting genotypes of soybean to iron limiting conditions under ambient and elevated CO2 and temperature conditions. Methodology: A pot culture experiment was performed using calcareous vertisol soil. The environmental factors viz. CO2 and temperature were combined and applied as a single factor with two levels: a-[CO2+T] (400±10 µmol mol-1, day/night temperature 30oC/22oC) and e-[CO2+T] (610±10 µmol mol-1, day/night temperature 34oC/26oC). Soybean genotype that differed in iron use efficiency was used as another factor and two contrasting genotypes were used as two levels viz. iron efficient and responsive (FeER) and iron inefficient and responsive (FeIR). Results: The higher partial pressure of CO2 under elevated carbon dioxide and temperature condition (Pco2 = 61.8 Pa) dissolved the native CaCO3 from calcareous vertisol soil and thereby resulted in higher HCO3- ion concentration. The antagonistic interaction between Fe2+ with HCO3- ion resulted in greater iron stress. As compared to ambient condition, seed yield was significantly reduced under more stressed e-[CO2+T] condition and resulted in ~1.4 and ~1.9 times drop in FeER and FeIR genotypes, respectively. Iron efficient and responsive (FeER) genotype recorded an impressive performance, as compared to the iron inefficient and responsive (FeIR) genotype, in counteracting iron deficiency stress, both under ambient and elevated conditions. Interpretation: The intra-specific variability between soybean genotypes and their response to elevated CO2 and temperature can be exploited to remediate the emerging iron deficiency stress in soybean plants and suggest ways to structure the future breeding programmes to adapt to the climate change. Key words: Calcareous vertisol, Chlorosis, Climate change, CO2, Soybean
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 6
Claim · model-written summary
Elevated carbon dioxide and temperature increased bicarbonate concentration in the calcareous soil through dissolution of native calcium carbonate.
- Taxon
- soybean
Glycine maxt0 - Treatment
- elevated carbon dioxide and temperature conditione0
- Outcome
- HCO3- ion concentratione0
- Direction
- highere0
- Value
- Pco2 = 61.8 Pae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher partial pressure of CO2 under elevated carbon dioxide and temperature condition (Pco2 = 61.8 Pa) dissolved the native CaCO3 from calcareous vertisol soil and thereby resulted in higher HCO3- ion concentration.”
t0“soybean”
Claim · model-written summary
The interaction of iron and bicarbonate increased iron stress in soybean.
- Taxon
- soybeanGlycine maxt0
- Compound
- HCO3- ione0
- Outcome
- iron stresse0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The antagonistic interaction between Fe2+ with HCO3- ion resulted in greater iron stress.”
t0“soybean”
Claim · model-written summary
Elevated CO2 and temperature significantly reduced seed yield of the FeER genotype by about 1.4 times relative to ambient conditions.
- Taxon
- soybeanGlycine maxt0
- Material
- FeERe0
- Treatment
- e-[CO2+T]e0
- Outcome
- seed yielde0
- Direction
- reducede0
- Value
- ~1.4e0
- Comparator
- ambient conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As compared to ambient condition, seed yield was significantly reduced under more stressed e-[CO2+T] condition and resulted in ~1.4 and ~1.9 times drop in FeER and FeIR genotypes, respectively.”
t0“soybean”
Claim · model-written summary
Elevated CO2 and temperature significantly reduced seed yield of the FeIR genotype by about 1.9 times relative to ambient conditions.
- Taxon
- soybeanGlycine maxt0
- Material
- FeIRe0
- Treatment
- e-[CO2+T]e0
- Outcome
- seed yielde0
- Direction
- reducede0
- Value
- ~1.9e0
- Comparator
- ambient conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As compared to ambient condition, seed yield was significantly reduced under more stressed e-[CO2+T] condition and resulted in ~1.4 and ~1.9 times drop in FeER and FeIR genotypes, respectively.”
t0“soybean”
Claim · model-written summary
FeER counteracted iron deficiency stress better than FeIR under both ambient and elevated conditions.
- Taxon
- soybeanGlycine maxt0
- Material
- FeERe0
- Outcome
- counteracting iron deficiency stresse0
- Direction
- impressive performancee0
- Qualifier
- both under ambient and elevated conditionse0
- Comparator
- FeIRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Iron efficient and responsive (FeER) genotype recorded an impressive performance, as compared to the iron inefficient and responsive (FeIR) genotype, in counteracting iron deficiency stress, both under ambient and elevated conditions.”
t0“soybean”
Claim · model-written summary
The authors propose exploiting soybean genotype variation to address emerging iron deficiency stress in breeding programs.
- Taxon
- soybeanGlycine maxe0
- Outcome
- remediate the emerging iron deficiency stresse0
- Qualifier
- future breeding programmese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The intra-specific variability between soybean genotypes and their response to elevated CO2 and temperature can be exploited to remediate the emerging iron deficiency stress in soybean plants and suggest ways to structure the future breeding programmes to adapt to the climate change.”
The same questions in other papers
co2 · yield · Glycine max (soybean)Positive and negative results
9 papers in the same direction as this paper · 86 in the opposite direction
- positive
- positive
- positive
92 papers more in this group
See all 96 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.