Action spectrum of the redox state of the plastoquinone pool defines its function in plant acclimation

2020 ◽  
Vol 104 (4) ◽  
pp. 1088-1104
Author(s):  
Heta Mattila ◽  
Sergey Khorobrykh ◽  
Marja Hakala‐Yatkin ◽  
Vesa Havurinne ◽  
Iiris Kuusisto ◽  
...  
Keyword(s):  
Redox State ◽  
Action Spectrum ◽  
Plastoquinone Pool ◽  
Plant Acclimation

scholarly journals Measurement of the redox state of the plastoquinone pool in cyanobacteria

FEBS Letters ◽  
2019 ◽  
Vol 594 (2) ◽  
pp. 367-375 ◽  
Author(s):  
Sergey Khorobrykh ◽  
Tatsuhiro Tsurumaki ◽  
Kan Tanaka ◽  
Taina Tyystjärvi ◽  
Esa Tyystjärvi
Keyword(s):  
Redox State ◽  
Plastoquinone Pool

scholarly journals Chlororespiration

2000 ◽  
Vol 355 (1402) ◽  
pp. 1541-1547 ◽  
Author(s):  
Peter J. Nixon
Keyword(s):  
Electron Transfer ◽  
Thylakoid Membrane ◽  
Redox State ◽  
Original Model ◽  
Current Status ◽  
Electrochemical Gradient ◽  
Electron Transfer Chain ◽  
Plastoquinone Pool ◽  
Transfer Chain ◽  
Photosynthetic Electron Transfer

The term ‘chlororespiration’ is used to describe the activity of a putative respiratory electron transfer chain within the thylakoid membrane of chloroplasts and was originally proposed by Bennoun in 1982 to explain effects on the redox state of the plastoquinone pool in green algae in the absence of photosynthetic electron transfer. In his original model, Bennoun suggested that the plastoquinone pool could be reduced through the action of a NAD(P)H dehydrogenase and could be oxidized by oxygen at an oxidase. At the same time an electrochemical gradient would be generated across the thylakoid membrane. This review describes the current status of the chlororespiration model in light of the recent discoveries of novel respiratory components within the chloroplast thylakoid membrane.

scholarly journals High Light Acclimation in the Secondary Plastids Containing Diatom Phaeodactylum tricornutum is Triggered by the Redox State of the Plastoquinone Pool

2012 ◽  
Vol 161 (2) ◽  
pp. 853-865 ◽  
Author(s):  
Bernard Lepetit ◽  
Sabine Sturm ◽  
Alessandra Rogato ◽  
Ansgar Gruber ◽  
Matthias Sachse ◽  
...  
Keyword(s):  
Phaeodactylum Tricornutum ◽  
Redox State ◽  
High Light ◽  
Light Acclimation ◽  
Plastoquinone Pool ◽  
Secondary Plastids

scholarly journals Correlation between changes in light energy distribution and changes in thylakoid membrane polypeptide phosphorylation in Chlamydomonas reinhardtii.

1984 ◽  
Vol 98 (1) ◽  
pp. 1-7 ◽  
Author(s):  
F A Wollman ◽  
P Delepelaire
Keyword(s):  
Photosystem Ii ◽  
Chlamydomonas Reinhardtii ◽  
Redox State ◽  
Light Harvesting ◽  
Anaerobic Treatment ◽  
Intact Cells ◽  
Light Harvesting Complex ◽  
Plastoquinone Pool

We have used a new method to extensively modify the redox state of the plastoquinone pool in Chlamydomonas reinhardtii intact cells. This was achieved by an anaerobic treatment that inhibits the chlororespiratory pathway recently described by P. Bennoun (Proc. Natl. Acad. Sci. USA, 1982, 79:4352-4356). A state I (plus 3,4-dichlorophenyl-1,1-dimethylurea) leads to anaerobic state transition induced a decrease in the maximal fluorescence yield at room temperature and in the FPSII/FPSI ratio at 77 degrees K, which was three times larger than in a classical state I leads to state II transition. The fluorescence changes observed in vivo were similar in amplitude to those observed in vitro upon transfer to the light of dark-adapted, broken chloroplasts incubated in the presence of ATP. We then compared the phosphorylation pattern of thylakoid polypeptides in C. reinhardtii in vitro and in vivo using gamma-[32P]ATP and [32P]orthophosphate labeling, respectively. The same set of polypeptides, mainly light-harvesting complex polypeptides, was phosphorylated in both cases. We observed that this phosphorylation process is reversible and is mediated by the redox state of the plastoquinone pool in vivo as well as in vitro. Similar changes of even larger amplitude were observed with the F34 mutant intact cells lacking in photosystem II centers. The presence of the photosystem II centers is then not required for the occurrence of the plastoquinone-mediated phosphorylation of light-harvesting complex polypeptides.

The redox state of plastoquinone pool regulates state transitions via cytochromeb6fcomplex inSynechocystissp. PCC 6803

FEBS Letters ◽  
2002 ◽  
Vol 519 (1-3) ◽  
pp. 82-86 ◽  
Author(s):  
Hai-Bin Mao ◽  
Guo-Fu Li ◽  
Xiang Ruan ◽  
Qing-Yu Wu ◽  
Yan-Dao Gong ◽  
...  
Keyword(s):  
Redox State ◽  
State Transitions ◽  
Plastoquinone Pool ◽  
Pcc 6803

Chloroplast-mediated regulation of nuclear genes in Arabidopsis thaliana in the absence of light stress

2006 ◽  
Vol 25 (1) ◽  
pp. 142-152 ◽  
Author(s):  
Mirva Piippo ◽  
Yagut Allahverdiyeva ◽  
Virpi Paakkarinen ◽  
Ulla-Maija Suoranta ◽  
Natalia Battchikova ◽  
...  
Keyword(s):  
Gene Expression ◽  
Photosystem I ◽  
Redox State ◽  
Light Stress ◽  
Calvin Cycle ◽  
Nuclear Gene ◽  
Fixation Rate ◽  
Plastoquinone Pool ◽  
Nuclear Gene Expression ◽  
Genes Encoding

Chloroplast signaling involves mechanisms to relay information from chloroplasts to the nucleus, to change nuclear gene expression in response to environmental cues. Aside from reactive oxygen species (ROS) produced under stress conditions, changes in the reduction/oxidation state of photosynthetic electron transfer components or coupled compounds in the stroma and the accumulation of photosynthesis-derived metabolites are likely origins of chloroplast signals. We attempted to investigate the origin of the signals from chloroplasts in mature Arabidopsis leaves by differentially modulating the redox states of the plastoquinone pool and components on the reducing side of photosystem I, as well as the rate of CO2 fixation, while avoiding the production of ROS by excess light. Differential expression of several nuclear photosynthesis genes, including a set of Calvin cycle enzymes, was recorded. These responded to the stromal redox conditions under prevailing light conditions but were independent of the redox state of the plastoquinone pool. The steady-state CO2 fixation rate was reflected in the orchestration of the expression of a number of genes encoding cytoplasmic proteins, including several glycolysis genes and the trehalose-6-phosphate synthase gene, and also the chloroplast-targeted chaperone DnaJ. Clearly, in mature leaves, the redox state of the compounds on the reducing side of photosystem I is of greater importance in light-dependent modulation of nuclear gene expression than the redox state of the plastoquinone pool, particularly at early signaling phases. It also became apparent that photosynthesis-mediated generation of metabolites or signaling molecules is involved in the relay of information from chloroplast to nucleus.

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