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Updated: May 1, 2026

Measurement of Protein Turnover Rates in Senescent and Non-Dividing Cultured Cells with Metabolic Labeling and Mass Spectrometry
Published on: April 6, 2022
Regulation of senescence under elevated atmospheric CO₂ via ubiquitin modification
Shoki Aoyama1, Yu Lu1, Junji Yamaguchi1
1Faculty of Science and Graduate School of Life Science; Hokkaido University; Kita-ku Sapporo, Japan.
Abstract:
Elevated atmospheric CO₂ concentration is a serious global environmental problem. Elevated CO₂ affects plant growth by changing primary metabolism, closely related to carbon (C) and nitrogen (N) availability. Under sufficient N conditions, plant growth is dramatically promoted by elevated CO₂. When N availability is limited, however, elevated CO₂ disrupts the balance between cellular C and N (C/N). Disruption of the C/N balance is regarded as an important factor in plant growth defects. Here we highlight the regulation of senescence in higher plants by atmospheric CO₂ and N, and the physiological function of C/N-related ubiquitin ligase ATL31 under condition of elevated CO₂. We also provide an overview of the ubiquitin ligases and related enzymes involved in regulating senescence in plants.
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