Clinorotation Affects the Ultrastructure of Pea Root Mitochondria

Brykov, Vasyl

doi:10.1007/s12217-010-9201-1

Cited by 8 publications

(5 citation statements)

References 14 publications

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“…Clinorotation leads to a decrease in size of mitochondria, but an increase in both matrix electron density and crista volume (Fig. ) in cells of the root distal elongation zone of 3‐ and 5‐day‐old pea seedlings (Brykov ). Such changes in mitochondrial ultrastructure under clinorotation occurred in actively metabolising cells and were accompanied by more intense respiration in root apices.…”

Section: Mitochondriamentioning

confidence: 99%

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Plant cell gravisensitivity and adaptation to microgravity

Kordyum

2013

Plant Biol J

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A short overview on the effects of real and simulated microgravity on certain cell components and processes, including new information obtained recently, is presented. Attention is focused on the influence of real and simulated microgravity on plant cells that are not specialised to gravity perception and on seed formation. The paper considers the possibility of full adaptation of plants to microgravity, and suggests some questions for future plant research in order to make decisions on fundamental and applied problems of plant space biology.

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Section: Mitochondriamentioning

confidence: 99%

“…Fragments of 3‐day‐old pea root DEZ cells with mitochondria in stationary control (A) and clinorotation (B). Scale bars = 0.5 μm (Brykov ).…”

Section: Mitochondriamentioning

confidence: 99%

Plant cell gravisensitivity and adaptation to microgravity

Kordyum

2013

Plant Biol J

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“…Therefore, much research remains to be done to fully understand how plants respond to microgravity. Existing literature has emphasized how microgravity affects plant growth and reproduction (Colla et al 2007), sub-cellular structures (Brykov 2011), transcription (Martzivanou et al 2006), and proteomics (Barjaktarovic´et al 2009). This study suggests that some aspects of tomato performance under simulated microgravity conditions were similar to those under other adverse conditions, suggesting that simulated microgravity is a stress.…”

Section: Discussionmentioning

confidence: 99%

Effects of long-term simulated microgravity on tomato seedlings

2014

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Xu, D., Guo, S. and Liu, M. 2014. Effects of long-term simulated microgravity on tomato seedlings. Can. J. Plant Sci. 94: 273–280. Whether plants can adapt to a long-term microgravity environment is crucial to their reproduction in bioregenerative life-support systems in space. This research investigated the effects of simulated microgravity on Lycopersivon esculentum Mill. (cv. Dwarf Red-bell). Several indicators, namely germination ratio, percentage of cell membrane damage, malondialdehyde content (MDA), superoxide anion ([Formula: see text]) content, and mininucleolus, were observed 10, 20, 30, and 40 d after planting (DAP). Simulated microgravity [random positioning machine (RPM) treatment] barely had any effect on germination ratio, but it increased MDA, an index indicating membrane lipid peroxidation. Random positioning machine-treated samples had significantly higher [Formula: see text] content until 16 DAP, but these differences ceased after 21 DAP. Simulated microgravity damaged cell membranes, and the damage severity was positively related to the duration of the simulated microgravity treatment. Mininucleoli were more common in RPM-treated root tips than in the 1×g ones. In conclusion, simulated microgravity seriously disturbed tomato seedling growth by damaging cell membrane integrity, causing the accumulation of hazardous substances, and affecting the cell nucleus structure.

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“…At present, there are available data on the structural and functional characteristics of chloroplasts in algae and higher plants in real microgravity in space flight and in simulated microgravity (clinorotation) (Tripathy et al, ; Kochubey et al, ; Stutte et al, ). Unfortunately, less attention have been paid to mitochondrial respiration in altered gravity (Brykov, ). Mitochondrial respiration in plants provides energy for biosynthesis, and its balance with photosynthesis determines the rate of plant biomass accumulation (Millar et al, ).…”

Section: Introductionmentioning

confidence: 99%

Clinorotation impacts root apex respiration and the ultrostructure of mitochondria

Brykov

Kordyum

2015

Cell Biology International

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Mitochondrial respiration in plants provides energy for biosynthesis, and its balance with photosynthesis determines the rate of plant biomass accumulation. However, there are very limited data on the influence of altered gravity on the functional status of plant mitochondria. In the given paper, we presented the results of our investigations of root respiration, the mitochondrion ultrastructure, and AOX expression of pea 1-, 3- and 5-day old seedlings grown under slow horizontal clinorotation by using an inhibitor analysis, electron microscopy, and quantitative real-time RT-PCR. It was in the first time shown that enhancement of the respiration rate in root apices of pea etiolated seedlings at the 5th day of clinorotation does not connected with increasing of both alternative oxidize capacity and AOX expression. We assumed this phenomenon is provided by more intensive oxidation of respiratory substrates. At the structural level, mitochondria in cells of the distal elongation zone were the most sensitive to clinorotation that confirms the special physiological status of this zone. The performed investigation revealed an enough resistance of plant mitochondria to the influence of altered gravity that, on our opinion, is one of components providing plant adaptation to microgravity in space flight.

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Clinorotation Affects the Ultrastructure of Pea Root Mitochondria

Cited by 8 publications

References 14 publications

Plant cell gravisensitivity and adaptation to microgravity

Plant cell gravisensitivity and adaptation to microgravity

Effects of long-term simulated microgravity on tomato seedlings

Clinorotation impacts root apex respiration and the ultrostructure of mitochondria

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