The impact of magnesium deficiency on photosynthesis and photoprotection in Spinacia oleracea

A publication (journal article) of the University of Göttingen

Jump to: Cite & Linked | Documents & Media | Details | Version history

Cite this publication

The impact of magnesium deficiency on photosynthesis and photoprotection in Spinacia oleracea
Jamali Jaghdani, S.; Jahns, P. & Tränkner, M. (2021) 
Plant Stress2 pp. 100040.​

Documents & Media

License

Published Version

Special user license Goescholar License

Details

Authors
Jamali Jaghdani, Setareh; Jahns, Peter; Tränkner, Merle
Abstract
Limited magnesium (Mg) supply adversely affects photosynthesis. This is particularly related to the high demand for Mg of key enzymes in the chloroplast, such as the photosystems, the ATP synthase and ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco). The accepted critical Mg concentrations for yield and dry matter (DM) are 1.5–3.5 mg Mg g−1 DM. Earlier studies on Mg deficiency indicated that carbon fixation by Rubisco is severely affected in various plant species, whereas the impact of Mg scarcity on light reactions and photoprotective mechanisms is quite variable. The latter could be related to species-specific differences in the general high light-sensitivity of photosynthetic light reactions. To test this hypothesis, we studied the impact of Mg deficiency in spinach (Spinacia oleracea) plants, which are known to be rather high light resistant. S. oleracea seeds were grown hydroponically under four Mg treatments (1 (control), 0.05, 0.025 and 0.015 mM) and the impact of Mg deficiency on CO2 assimilation, photosynthetic light reactions and photoprotection was determined. Our results show that the photosynthetic efficiency and the overall light stress response were not altered under Mg deficiency, whereas the CO2 assimilation as well as leaf and root Mg concentrations were significantly reduced.
Issue Date
2021
Journal
Plant Stress
ISSN
2667-064X

Export Metadata

Reference

Citations

Usage 17 Download(s)

Social Media