Work

Changes in the photosynthetic performance, the activity of enzymes of nitrogen metabolism, and proline content in the leaves of wheat plants after exposure to low CO2 concentration

Year: 2022

Type: article

Abstract: The changes in photosynthetic activity, as well as the activity of nitrogen-metabolism enzymes, the intensity of lipid peroxidation, and proline content were studied in Triticum aestivum L. plants after their incubation at a low CO2 concentration in a sealed chamber for 10 d. CO2 deficiency (-CO2) compared to normal CO2 concentration (control) led to a decrease in the rate of O2 gas exchange at the plateau of the light curve and quantum yield of photosynthesis. The maximum and effective quantum photochemical yields also decreased. CO2 deficiency reduced the activity of nitrate reductase, but increased the activities of nitrite reductase, glutamine synthetase, and glutamate dehydrogenase, and promoted proline accumulation. It is assumed that with a lack of CO2, an excess of nitrogen-containing compounds occurs, which must be removed from metabolic processes. Also, we suggest the partial storage of nitrogen in the form of nitrogen-containing compounds such as proline.

Source: Photosynthetica

DOI: 10.32615/ps.2022.047

Authors: A. IVANOV, A. KOSOBRYUKHOV, V. KRESLAVSKI, S.I. ALLAKHVERDIEV

Institutions: Bahçeşehir University, Russian Academy of Sciences, King Abdulaziz University, Institute of Basic Biological Problems, Timiryazev Institute of Plant Physiology

Language: English

Topic: Plant responses to elevated CO2

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDGs: Zero hunger, Climate action

Open Access status: gold

Estimated APC paid: $3,140