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

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...

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Autores principales:	Setareh Jamali Jaghdani, Peter Jahns, Merle Tränkner
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Chlorophyll fluorescence Crop nutrition Mg Photoprotection Photosynthesis Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/821dde1011874831a2866489bb6479d3
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spelling	oai:doaj.org-article:821dde1011874831a2866489bb6479d32021-12-04T04:36:40ZThe impact of magnesium deficiency on photosynthesis and photoprotection in Spinacia oleracea2667-064X10.1016/j.stress.2021.100040https://doaj.org/article/821dde1011874831a2866489bb6479d32021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2667064X21000397https://doaj.org/toc/2667-064XLimited 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.Setareh Jamali JaghdaniPeter JahnsMerle TränknerElsevierarticleChlorophyll fluorescenceCrop nutritionMgPhotoprotectionPhotosynthesisPlant ecologyQK900-989ENPlant Stress, Vol 2, Iss , Pp 100040- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chlorophyll fluorescence Crop nutrition Mg Photoprotection Photosynthesis Plant ecology QK900-989
spellingShingle	Chlorophyll fluorescence Crop nutrition Mg Photoprotection Photosynthesis Plant ecology QK900-989 Setareh Jamali Jaghdani Peter Jahns Merle Tränkner The impact of magnesium deficiency on photosynthesis and photoprotection in Spinacia oleracea
description	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.
format	article
author	Setareh Jamali Jaghdani Peter Jahns Merle Tränkner
author_facet	Setareh Jamali Jaghdani Peter Jahns Merle Tränkner
author_sort	Setareh Jamali Jaghdani
title	The impact of magnesium deficiency on photosynthesis and photoprotection in Spinacia oleracea
title_short	The impact of magnesium deficiency on photosynthesis and photoprotection in Spinacia oleracea
title_full	The impact of magnesium deficiency on photosynthesis and photoprotection in Spinacia oleracea
title_fullStr	The impact of magnesium deficiency on photosynthesis and photoprotection in Spinacia oleracea
title_full_unstemmed	The impact of magnesium deficiency on photosynthesis and photoprotection in Spinacia oleracea
title_sort	impact of magnesium deficiency on photosynthesis and photoprotection in spinacia oleracea
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/821dde1011874831a2866489bb6479d3
work_keys_str_mv	AT setarehjamalijaghdani theimpactofmagnesiumdeficiencyonphotosynthesisandphotoprotectioninspinaciaoleracea AT peterjahns theimpactofmagnesiumdeficiencyonphotosynthesisandphotoprotectioninspinaciaoleracea AT merletrankner theimpactofmagnesiumdeficiencyonphotosynthesisandphotoprotectioninspinaciaoleracea AT setarehjamalijaghdani impactofmagnesiumdeficiencyonphotosynthesisandphotoprotectioninspinaciaoleracea AT peterjahns impactofmagnesiumdeficiencyonphotosynthesisandphotoprotectioninspinaciaoleracea AT merletrankner impactofmagnesiumdeficiencyonphotosynthesisandphotoprotectioninspinaciaoleracea
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The impact of magnesium deficiency on photosynthesis and photoprotection in Spinacia oleracea

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