Li, H., Liu, S., Guo, J., Liu, F.,
Song, F. and Li, X.
2020
Journal of Agronomy and Crop Science,
DOI: 10.1111/jac.12443 .
... Li et al. (2020) write that although winter wheat can survive some low temperatures, it "is very sensitive to low-temperature stress during the early seedling stage before winter."
... "ice formation in plant tissues causes dehydration, which causes damage to the cell wall and plasma membrane (which) significantly affect the stability of the cell ultrastructure.
Additionally, low temperature stress reduces photosynthesis and limits energy supply to plant defenses ...
... Li et al. wondered if elevated CO2 ... known to enhance plant photosynthesis and reduce oxidative stress, might reduce the negative impacts of low temperature stress on winter wheat.
... the authors report that elevated CO2 ... "attenuating the negative effect of low temperature on chloroplast ultrastructure."
Plants grown in the 800 ppm CO2 treatment were found to have consumed more starch, which consumption helped " ... to prevent low-temperature damage."
... proline concentration, which enhances water holding capacity while decreasing the freezing point, was significantly greater in plants in the elevated CO2 treatment."