CO2 elevation modulates the growth and physiological responses of soybean (Glycine max L. Merr.) to progressive soil drying
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CO2 elevation modulates the growth and physiological responses of soybean (Glycine max L. Merr.) to progressive soil drying. / Cui, Bingjing; Liu, Jie; Zhang, Manyi; Wan, Heng; Wei, Guiyu; Wei, Zhenhua; Liu, Fulai.
I: Plant Growth Regulation, Bind 103, 2024.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - CO2 elevation modulates the growth and physiological responses of soybean (Glycine max L. Merr.) to progressive soil drying
AU - Cui, Bingjing
AU - Liu, Jie
AU - Zhang, Manyi
AU - Wan, Heng
AU - Wei, Guiyu
AU - Wei, Zhenhua
AU - Liu, Fulai
N1 - Publisher Copyright: © 2023, The Author(s).
PY - 2024
Y1 - 2024
N2 - Understanding the impact of future climates on crop performance is essential for sustainable agricultural production. In the current research, the development and biological behavior of soybean plants during gradual desiccation of the soil (from the 100% of pot water holding capacity to the gs of plant decreased to 10% of that of the control plants) at ambient [CO2] (a[CO2], 400 ppm) and elevated [CO2] (e[CO2], 800 ppm) were investigated. The results showed that plants grown under e[CO2] conditions had remarkably higher photosynthetic rate (An) but lower stomatal conductance (gs) and transpiration rate (E) compared to plants at a[CO2] conditions, which led to an enhanced water use efficiency at both stomatal (WUEi) and leaf levels (WUEleaf). In addition, the e[CO2]-grown soybeans showed a stunted gs response to progressive soil drying, coinciding with a decrease in the susceptibility of gs to the ABA signaling, though they tended to maintain a better leaf water status under drought than the a[CO2]-grown plants. Although the leaf nitrogen concentration (Nleaf) and the total plant N content were notably lower at the e[CO2] condition, the specific leaf N content (SLN) was similar at different [CO2] conditions. Compared to soybean grown under e[CO2], the greater number of nodules at e[CO2] treatment would lead to an enhanced N-fixation, yet, it did not improve the N nutrition of the plants. Nevertheless, by sustaining the SLN, the soybean plants enhanced An when growing at e[CO2], particularly under dry conditions. This knowledge is essential for sustaining soybean production in future climate change scenarios.
AB - Understanding the impact of future climates on crop performance is essential for sustainable agricultural production. In the current research, the development and biological behavior of soybean plants during gradual desiccation of the soil (from the 100% of pot water holding capacity to the gs of plant decreased to 10% of that of the control plants) at ambient [CO2] (a[CO2], 400 ppm) and elevated [CO2] (e[CO2], 800 ppm) were investigated. The results showed that plants grown under e[CO2] conditions had remarkably higher photosynthetic rate (An) but lower stomatal conductance (gs) and transpiration rate (E) compared to plants at a[CO2] conditions, which led to an enhanced water use efficiency at both stomatal (WUEi) and leaf levels (WUEleaf). In addition, the e[CO2]-grown soybeans showed a stunted gs response to progressive soil drying, coinciding with a decrease in the susceptibility of gs to the ABA signaling, though they tended to maintain a better leaf water status under drought than the a[CO2]-grown plants. Although the leaf nitrogen concentration (Nleaf) and the total plant N content were notably lower at the e[CO2] condition, the specific leaf N content (SLN) was similar at different [CO2] conditions. Compared to soybean grown under e[CO2], the greater number of nodules at e[CO2] treatment would lead to an enhanced N-fixation, yet, it did not improve the N nutrition of the plants. Nevertheless, by sustaining the SLN, the soybean plants enhanced An when growing at e[CO2], particularly under dry conditions. This knowledge is essential for sustaining soybean production in future climate change scenarios.
KW - Abscisic acid
KW - Climate change
KW - Drought stress
KW - Root nodules
KW - Water use efficiency
U2 - 10.1007/s10725-023-01092-z
DO - 10.1007/s10725-023-01092-z
M3 - Journal article
AN - SCOPUS:85176615384
VL - 103
JO - Plant Growth Regulation
JF - Plant Growth Regulation
SN - 0167-6903
ER -
ID: 374932886