Effect of the transgenerational exposure to elevated CO(2)on low temperature tolerance of winter wheat: Chloroplast ultrastructure and carbohydrate metabolism
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The transgenerational effect of elevated atmospheric CO(2)concentration (e[CO2]) on low temperature response in wheat is still little investigated, through the interaction ofe[CO2], and low-temperature stress has been reported in a single generation. Here, the low temperature-induced modifications of chloroplast ultrastructure and carbohydrate metabolism in wheat after four generations continuously grown under ambient CO(2)concentration (a[CO2]) ande[CO2] (2014-2018) were investigated. The results indicated that the transgenerational exposure toe[CO2] increased the number of grana lamellae and the amounts of osmiophilic lipid droplets, attenuating the negative effect of low temperature on chloroplast ultrastructure. The transgenerationale[CO2] enhanced the activities of antioxidant enzymes (i.e. SOD, POD and CAT) and concentrations of osmotic substances (i.e. proline and soluble sugar), which alleviated the low temperature-induced oxidative damage to the chloroplast ultrastructure. In addition, transgenerational exposure of wheat toe[CO2] increased activities of vacInv and cwInv, while decreased fructokinase activity, which affected the sucrose metabolism in wheat leaf. These findings elucidated that transgenerational exposure toe[CO2] could improve low temperature tolerance of winter wheat, which provide novel insights to the response of wheat to future climate change.
Original language | English |
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Journal | Journal of Agronomy and Crop Science |
Volume | 206 |
Issue number | 6 |
Pages (from-to) | 773-783 |
Number of pages | 11 |
ISSN | 0931-2250 |
DOIs | |
Publication status | Published - 2020 |
- carbohydrate metabolism, chilling, elevated CO2, Triticum aestivum, ultrastructure, TRITICUM-AESTIVUM L., COLD STRESS, CHLOROPHYLL FLUORESCENCE, ATMOSPHERIC CO2, PHOTOSYNTHESIS, ACCLIMATION, RESISTANCE, GROWTH, ELONGATION, PARAMETERS
Research areas
ID: 249484021