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@ARTICLE{Soares:903597,
author = {Soares, José C. and Zimmermann, Lars and Zendonadi dos
Santos, Nicolas and Muller, Onno and Pintado, Manuela and
Vasconcelos, Marta W.},
title = {{G}enotypic variation in the response of soybean to
elevated {CO} 2},
journal = {Plant-environment interactions},
volume = {2},
number = {6},
issn = {2575-6265},
address = {Hoboken, NJ},
publisher = {Wiley},
reportid = {FZJ-2021-05251},
pages = {263 - 276},
year = {2021},
abstract = {The impact of elevated CO2 (eCO2) on soybean productivity
is essential to the global food supply because it is the
world's leading source of vegetable proteins. This study
aimed to understand the yield responses and nutritional
impact under free-air CO2 enrichment (FACE) conditions of
soybean genotypes. Here we report that grain yield increased
by $46.9\%$ and no reduction in harvest index was observed
among soybean genotypes. Elevated CO2 improved the
photosynthetic carbon assimilation rate, leaf area, plant
height, and aboveground biomass at vegetative and pod
filling stages. Besides the positive effects on yield
parameters, eCO2 differentially affected the overall grain
quality. The levels of calcium (Ca), phosphorous (P),
potassium (K), magnesium (Mg), manganese (Mn), iron (Fe),
boron (B), and zinc (Zn) grain minerals decreased by 22.9,
9.0, 4.9, 10.1, 21.3, 28.1, 18.5, and $25.9\%$ under eCO2
conditions, respectively. Soluble sugars and starch
increased by 9.1 and $16.0\%,$ respectively, phytic acid
accumulation increased by $8.1\%,$ but grain protein content
significantly decreased by $5.6\%$ across soybean genotypes.
Furthermore, the antioxidant activity decreased by $36.9\%,$
but the total phenolic content was not affected by eCO2
conditions. Genotypes, such as Winsconsin Black,
Primorskaja, and L-117, were considered the most responsive
to eCO2 in terms of yield enhancement and less affected in
the nutritional quality. Our results confirm the existence
of genetic variability in soybean responses to eCO2, and
differences between genotypes in yield improvement and
decreased sensitivity to eCO2 in terms of grain quality loss
could be included in future soybean selection to enable
adaptation to climate change.},
cin = {IBG-2},
ddc = {580},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217) / EPPN2020 - European Plant
Phenotyping Network 2020 (731013)},
pid = {G:(DE-HGF)POF4-2171 / G:(EU-Grant)731013},
typ = {PUB:(DE-HGF)16},
doi = {10.1002/pei3.10065},
url = {https://juser.fz-juelich.de/record/903597},
}