NDLI: Lead induced changes in phosphorylation of PSII proteins in low light grown pea plants

Content Provider	Springer Nature Link
Author	Wioleta, Wasilewska Anna, Drożak Ilona, Bacławska Kamila, Kąkol Elżbieta, Romawska
Copyright Year	2014
Abstract	Light-intensity and redox-state induced thylakoid proteins phosphorylation involved in structural changes and in regulation of protein turnover. The presence of heavy metal ions triggers a wide range of cellular responses including changes in plant growth and photosynthesis. Plants have evolved a number of mechanisms to protect photosynthetic apparatus. We have characterized the effect of lead on PSII protein phosphorylation in pea (Pisum sativum L.) plants grown in low light conditions. Pb ions affected only slightly photochemical efficiency of PSII and had no effect on organization of thylakoid complexes. Lead activated strongly phosphorylation of PSII core D1 protein and dephosphorylation of this protein did not proceed in far red light. D1 protein was also not degraded in this conditions. However, phosphorylation of LHCII proteins was not affected by lead. These results indicate that Pb2+ stimulate the phosphorylation of PSII core proteins and by disturbing the disassembly of supercomplexes play a role in PSII repair mechanism. LHCII phosphorylation could control the distribution of energy between the photosystems in low light conditions. This demonstrates that plants may respond to heavy metals by induction different pathways responsible for protein protection under stress conditions.
Starting Page	151
Ending Page	162
Page Count	12
File Format	PDF
ISSN	09660844
Journal	BioMetals
Volume Number	28
Issue Number	1
e-ISSN	15728773
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-12-10
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lead Low light Pea Photosystem II Protein phosphorylation Thylakoids Biochemistry Pharmacology/Toxicology Microbiology Cell Biology Plant Physiology Medicine/Public Health
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Biochemistry, Genetics and Molecular Biology Biomaterials Agricultural and Biological Sciences

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