Cadmium exerts its toxic effects on photosynthesis via a cascade mechanism in the cyanobacterium, Synechocystis PCC 6803

Plant, Cell & Environment
Tünde TóthLászló Kovács

Abstract

Despite intense research, the mechanism of Cd(2+) toxicity on photosynthesis is still elusive because of the multiplicity of the inhibitory effects and different barriers in plants. The quick Cd(2+) uptake in Synechocystis PCC 6803 permits the direct interaction of cadmium with the photosynthetic machinery and allows the distinction between primary and secondary effects. We show that the CO(2) -dependent electron transport is rapidly inhibited upon exposing the cells to 40 µm Cd(2+) (50% inhibition in ∼15 min). However, during this time we observe only symptoms of photosystem I acceptor side limitation and a build of an excitation pressure on the reaction centres, as indicated by light-induced P700 redox transients, O(2) polarography and changes in chlorophyll a fluorescence parameters. Inhibitory effects on photosystem II electron transport and the degradation of the reaction centre protein D1 can only be observed after several hours, and only in the light, as revealed by chlorophyll a fluorescence transients, thermoluminescence and immunoblotting. Despite the marked differences in the manifestations of these short- and long-term effects, they exhibit virtually the same Cd(2+) concentration dependence. These data strongly sugg...Continue Reading

References

Sep 8, 1998·Microbiology and Molecular Biology Reviews : MMBR·D CampbellG Oquist
Feb 18, 1997·Proceedings of the National Academy of Sciences of the United States of America·N KerenI Ohad
Sep 12, 2002·Annual Review of Plant Biology·Christopher Cobbett, Peter Goldsbrough
Oct 1, 1993·Plant Physiology·J. Harbinson, C. L. Hedley
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Aaron Kaplan, Leonora Reinhold
Jul 24, 2004·Journal of Inorganic Biochemistry·Joanna GrzybStanisław Wieckowski
Oct 30, 2004·Biochimica Et Biophysica Acta·Kajsa G V SigfridssonStenbjörn Styring
May 6, 2005·Nature·Todd W LaneFrançois M M Morel
Oct 18, 2005·Photosynthesis Research·Imre Vass
Dec 6, 2005·Photosynthesis Research·W S Chow, A B Hope
Jul 6, 2006·Journal of Biological Inorganic Chemistry : JBIC : a Publication of the Society of Biological Inorganic Chemistry·Klára Nárcisz SasEva Danielsen
Jan 9, 2007·Biochimica Et Biophysica Acta·Norio MurataSuleyman I Allakhverdiev
Jul 31, 2007·Plant, Cell & Environment·Neil R BakerDavid M Kramer
Jun 25, 2009·Photosynthesis Research·Jean-Marc Ducruet, Imre Vass
May 14, 2011·Biochimica Et Biophysica Acta·Imre Vass
Jan 1, 1985·Photosynthesis Research·H Clijsters, F Van Assche
Aug 1, 1993·Physiologia Plantarum·Zbigniew KrupaNorman P A Huner

❮ Previous
Next ❯

Citations

Feb 6, 2016·Plant Cell Reports·Zhouping LiuCheng Zhu
Apr 17, 2015·Ecotoxicology and Environmental Safety·Madhulika SinghSheo Mohan Prasad
Oct 12, 2014·Protoplasma·Mohd AsgherNafees A Khan
Jan 23, 2017·Ecotoxicology and Environmental Safety·Qinsong XuTingting Zhang
May 24, 2019·Environmental Science. Processes & Impacts·Zhen YuYi Zhu
Aug 1, 2018·Biotechnology for Biofuels·Chunxiao XuWeiwen Zhang
Dec 23, 2020·The Science of the Total Environment·Jinyu CuiWeiwen Zhang
Feb 16, 2021·Journal of Hazardous Materials·Yixin HeHong Li
Feb 28, 2021·Environmental Science and Pollution Research International·Sindhunath Chakraborty, Arun Kumar Mishra
May 1, 2021·International Journal of Molecular Sciences·Monika Kula-MaximenkoIreneusz Ślesak
Nov 9, 2021·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Matteo GrattieriMassimo Trotta

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.