Investigation on rice embryos and seeds after the LDEF flight: Electronic spin resonance identification

Bayonove, J.; Raffi, J.; Agnel, J. P.

doi:10.1016/0273-1177(94)90450-2

Cited by 11 publications

(4 citation statements)

References 5 publications

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“…The same method has already been used, e.g. to compare the radicals induced in starches by γ - [16], UV [17] or cosmic [18] radiation. If radicals are induced in the powder state, they are quite stable in the absence of water.…”

Section: Quantitative Comparison With γ -Irradiation Of α-Lactose Monmentioning

confidence: 99%

Radicalar probes to measure the action of energy on granular materials

Baron

Chamayou

Marchioro

et al. 2005

Advanced Powder Technology

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probes to measure the action of energy on granular materials. Advanced Powder Technology, Elsevier, 2005, 16 (3), p.Abstract-Measuring the action of energy on matter is a complex problem, especially in the case of granular materials. For example, particle size reduction by grinding generally shows poor overall energetic yields and a significant challenge in this area is to accurately estimate the energy consumed, including that stored in the particles. Fine or ultra-fine grinding processes require a lot of energy, part of which becomes internal energy and can lead to mechanochemical reactions and useful products. We studied the appearance of free radicals during the grinding of α-lactose monohydrate by means of electron spin resonance (ESR). These radicals are the same as those induced by γ -radiation and comparison of ESR spectra intensities with those from ground products allows the determination of an 'equivalent γ -irradiation dose'. This gives a novel concept for characterizing the action of mechanical energy on matter in fine grinding by using molecular probes. This is the first example of the investigation of mechanochemical energy during the fine grinding process. Y M ratio of the 'quantity of energy used in the lactose sample to induce chemical reactions and radicals' divided by the 'total quantity of energy used by the mill during grinding treatment'

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Section: Quantitative Comparison With γ -Irradiation Of α-Lactose Monmentioning

confidence: 99%

Radicalar probes to measure the action of energy on granular materials

Baron

Chamayou

Marchioro

et al. 2005

Advanced Powder Technology

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“…Kahn and Stoffella (1996) also found no evidence of adverse germination, emergence and fruit yield due to space exposure of the tomato seeds. Rice grains (Bayonove et al, 1994), used in an electron spin resonance (ESR) study of free-radical formation, and Arabidopsis seeds, included as radiobiological indicators (Zimmermann et al, 1994), were also flown on LDEF.…”

Section: Seed Storagementioning

confidence: 99%

“…The free radical concentration found in rice grains post-flight depended on the irradiation doses and whether or not they were delivered in the presence of oxygen (Bayonove et al, 1994). Similarly, the loss of viability in Arabidopsis seeds caused by cosmic ionizing radiation exposure varied according to the position of the samples on the LDEF (and hence absorbed radiation dose) (Zimmermann et al, 1994).…”

Section: Seed Storagementioning

confidence: 99%

Seeds in space

Musgrave

2002

Seed Sci. Res.

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Since experimentation with plants began in space, a wide range of information has been gained regarding how this unique environment affects the biology of seeds. Seed biology experiments in this milieu have addressed aspects of seed storage, seed germination and metabolism, seedling orientation and seed production by flowering plants. Construction of hardware that provides a suitable growth environment in microgravity has been especially challenging because of the consequences posed by microgravity for fluid and gas distribution around the plant. Fluid shifting causes seed hydration kinetics to occur at a faster rate in microgravity than in 1 g; however, it also induces hypoxic metabolism during the seed germination process. In the absence of a detectable gravitational force, seedling roots grow according to their embryonic orientation and then initiate random walk movements. Light and oxygen gradients are the primary stimuli that orient root growth in this environment. For seed development to occur in spaceflight, well-ventilated growth chambers are necessary to support the carbohydrate supply needs of the developing embryos, and to provide the necessary humidity gradient for anthers to successfully dehisce and release pollen. The dry weight of seeds formed in space is lower than that in ground controls, and seed storage reserves are altered. Seed storage phenomena in spaceflight depend on whether or not oxygen and moisture are present – if not, viability exceeds that of seeds stored under comparable conditions on the ground. Because of the key role to be played by seeds in future advanced life support scenarios in space, more research is needed on the implications of this unique environment for seed biology.

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“…Current research has confirmed that spaceflight would produce a stress response to plants. After a long period of spaceflight, rice seeds showed no germination or were undeveloped or elongated after germination without cell division [ 5 ]. The somatic cells of corn seeds mutated after spaceflight, which led to white and yellow stripes, leaf color changes, and dwarfing in the plant [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

The Memory of Rice Response to Spaceflight Stress: From the Perspective of Metabolomics and Proteomics

Zeng

Cui

Yin

et al. 2022

IJMS

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The stress response of plants to spaceflight has been confirmed in contemporary plants, and plants retained the memory of spaceflight through methylation reaction. However, how the progeny plants adapt to this cross-generational stress memory was rarely reported. Here, we used the ShiJian-10 retractable satellite carrying Dongnong416 rice seeds for a 12.5-day on-orbit flight and planted the F2 generation after returning to the ground. We evaluated the agronomic traits of the F2 generation plants and found that the F2 generation plants had no significant differences in plant height and number of tillers. Next, the redox state in F2 plants was evaluated, and it was found that the spaceflight broke the redox state of the F2 generation rice. In order to further illustrate the stress response caused by this redox state imbalance, we conducted proteomics and metabolomics analysis. Proteomics results showed that the redox process in F2 rice interacts with signal transduction, stress response, and other pathways, causing genome instability in the plant, leading to transcription, post-transcriptional modification, protein synthesis, protein modification, and degradation processes were suppressed. The metabolomics results showed that the metabolism of the F2 generation plants was reshaped. These metabolic pathways mainly included amino acid metabolism, sugar metabolism, cofactor and vitamin metabolism, purine metabolism, phenylpropane biosynthesis, and flavonoid metabolism. These metabolic pathways constituted a new metabolic network. This study confirmed that spaceflight affected the metabolic changes in offspring rice, which would help better understand the adaptation mechanism of plants to the space environment.

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Investigation on rice embryos and seeds after the LDEF flight: Electronic spin resonance identification

Cited by 11 publications

References 5 publications

Radicalar probes to measure the action of energy on granular materials

Radicalar probes to measure the action of energy on granular materials

Seeds in space

The Memory of Rice Response to Spaceflight Stress: From the Perspective of Metabolomics and Proteomics

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