Modification of storage proteins in the barley grain increases endosperm zinc and iron under both normal and elevated atmospheric CO2
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Modification of storage proteins in the barley grain increases endosperm zinc and iron under both normal and elevated atmospheric CO2. / Gao, Yajie; Persson, Daniel P.; Vincze, Eva; Schjoerring, Jan K.
In: Physiologia Plantarum, Vol. 174, No. 1, e13624, 2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Modification of storage proteins in the barley grain increases endosperm zinc and iron under both normal and elevated atmospheric CO2
AU - Gao, Yajie
AU - Persson, Daniel P.
AU - Vincze, Eva
AU - Schjoerring, Jan K.
N1 - Publisher Copyright: © 2022 The Authors.
PY - 2022
Y1 - 2022
N2 - Increasing atmospheric CO2 concentration is expected to enhance the grain yield of C3 cereal plants, while at the same time reducing the concentrations of minerals and proteins. This will lead to a lower nutritional quality and increase global problems associated with micronutrient malnutrition. Among the barley grain storage proteins, the C-hordein fraction has the lowest abundance of sulfur (S) containing amino acids and is poorest in binding of zinc (Zn). In the present study, C-hordein-suppressed barley lines with reduced C-hordein content, obtained by use of antisense or RNAi technology, were investigated under ambient and elevated atmospheric CO2 concentration. Grains of the C-hordein-suppressed lines showed 50% increase in the concentrations of Zn and iron (Fe) in the core endosperm relative to the wild-type under both ambient and elevated atmospheric CO2. Element distribution images obtained using laser ablation-inductively coupled plasma-mass spectrometry confirmed the enrichment of Fe and Zn in the core endosperm of the lines with modified storage protein composition. We conclude that modification of grain storage proteins may improve the nutritional value of cereal grain with respect to Zn and Fe under both normal and future conditions of elevated atmospheric CO2.
AB - Increasing atmospheric CO2 concentration is expected to enhance the grain yield of C3 cereal plants, while at the same time reducing the concentrations of minerals and proteins. This will lead to a lower nutritional quality and increase global problems associated with micronutrient malnutrition. Among the barley grain storage proteins, the C-hordein fraction has the lowest abundance of sulfur (S) containing amino acids and is poorest in binding of zinc (Zn). In the present study, C-hordein-suppressed barley lines with reduced C-hordein content, obtained by use of antisense or RNAi technology, were investigated under ambient and elevated atmospheric CO2 concentration. Grains of the C-hordein-suppressed lines showed 50% increase in the concentrations of Zn and iron (Fe) in the core endosperm relative to the wild-type under both ambient and elevated atmospheric CO2. Element distribution images obtained using laser ablation-inductively coupled plasma-mass spectrometry confirmed the enrichment of Fe and Zn in the core endosperm of the lines with modified storage protein composition. We conclude that modification of grain storage proteins may improve the nutritional value of cereal grain with respect to Zn and Fe under both normal and future conditions of elevated atmospheric CO2.
U2 - 10.1111/ppl.13624
DO - 10.1111/ppl.13624
M3 - Journal article
C2 - 35023171
AN - SCOPUS:85125914151
VL - 174
JO - Physiologia Plantarum
JF - Physiologia Plantarum
SN - 0031-9317
IS - 1
M1 - e13624
ER -
ID: 300453291