Converting low dose radiation to redox signaling

Pristov, Jelena Bogdanović; Spasić, Mihajlo; Spasojević, Ivan

doi:10.4161/psb.23151

Cited by 2 publications

(3 citation statements)

References 18 publications

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“…In cell wall isolates from pea leaves or on citrus fruit pectin, UV-A (315–400 nm) or UV-B produced hydroxyl radical ( • OH) in presence of hydrogen peroxide. Pectin is able to transform ( • OH) to superoxide (O 2 •− ), which may have an intracellular impact, since it can pass cellular membrane [ 276 ]. ( • OH) released could contribute to methane production from galacturonic acid methyl ester groups, and also, at a lower level, from acetate groups, [ 276 , 277 ].…”

Section: Lightmentioning

confidence: 99%

“…Pectin is able to transform ( • OH) to superoxide (O 2 •− ), which may have an intracellular impact, since it can pass cellular membrane [ 276 ]. ( • OH) released could contribute to methane production from galacturonic acid methyl ester groups, and also, at a lower level, from acetate groups, [ 276 , 277 ]. This indicates that pectin might be involved in the UV radiation signaling pathway as a source of superoxide [ 276 , 278 ].…”

Section: Lightmentioning

confidence: 99%

“…( • OH) released could contribute to methane production from galacturonic acid methyl ester groups, and also, at a lower level, from acetate groups, [ 276 , 277 ]. This indicates that pectin might be involved in the UV radiation signaling pathway as a source of superoxide [ 276 , 278 ]. In tomato pericarp, UV-C irradiation (230–280 nm) exposure during postharvest retarded cell wall disassembly.…”

Section: Lightmentioning

confidence: 99%

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Cell Wall Metabolism in Response to Abiotic Stress

Gall

Florian

Domon

et al. 2015

Plants

902

727

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This review focuses on the responses of the plant cell wall to several abiotic stresses including drought, flooding, heat, cold, salt, heavy metals, light, and air pollutants. The effects of stress on cell wall metabolism are discussed at the physiological (morphogenic), transcriptomic, proteomic and biochemical levels. The analysis of a large set of data shows that the plant response is highly complex. The overall effects of most abiotic stress are often dependent on the plant species, the genotype, the age of the plant, the timing of the stress application, and the intensity of this stress. This shows the difficulty of identifying a common pattern of stress response in cell wall architecture that could enable adaptation and/or resistance to abiotic stress. However, in most cases, two main mechanisms can be highlighted: (i) an increased level in xyloglucan endotransglucosylase/hydrolase (XTH) and expansin proteins, associated with an increase in the degree of rhamnogalacturonan I branching that maintains cell wall plasticity and (ii) an increased cell wall thickening by reinforcement of the secondary wall with hemicellulose and lignin deposition. Taken together, these results show the need to undertake large-scale analyses, using multidisciplinary approaches, to unravel the consequences of stress on the cell wall. This will help identify the key components that could be targeted to improve biomass production under stress conditions.

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Section: Lightmentioning

confidence: 99%

Section: Lightmentioning

confidence: 99%

Section: Lightmentioning

confidence: 99%

See 1 more Smart Citation

Cell Wall Metabolism in Response to Abiotic Stress

Gall

Florian

Domon

et al. 2015

Plants

902

727

View full text Add to dashboard Cite

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Integrative concept of homeostasis: translating physiology into medicine

Spasojević

2014

F1000Res

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To truly understand living systems they must be viewed as a whole. In order to achieve this and to come to some law that living systems comply with, the reductionist approach, which has delivered a tremendous amount of data so far, should be complemented with integrative concepts. The current paper represents my humble attempt towards an integrative concept of homeostasis that would describe the (patho)physiological setup of adult human/mammal system, and that might be applicable in medicine. Homeostasis can be defined as time- and initial-condition-independent globally stabile state of non-equilibrium of a living system in which the interactions of system with the surroundings and internal processes are overall in balance or very near it. The presence of homeostasis or the shift from homeostasis of an adult human/mammal system can be described by equation that takes into account energy and informational input and output, catabolism and anabolism, oxidation and reduction, and entropy, where changes in the input should equal changes in the output within a specific period of time. Catabolism and oxidation are presented on the input side since the drive of the surroundings is to decompose and oxidize living systems, i.e. systems are under constant 'catabolic and oxidative pressure'. According to the equation, homeostasis might be regained by changing any of the input or output components in a proper manner (and within certain limits), not only the one(s) that has/have been changed in the first place resulting in the deviation from homeostasis.

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Converting low dose radiation to redox signaling

Cited by 2 publications

References 18 publications

Cell Wall Metabolism in Response to Abiotic Stress

Cell Wall Metabolism in Response to Abiotic Stress

Integrative concept of homeostasis: translating physiology into medicine

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