Low-dose ionizing radiation limitations to seed germination: Results from a model linking physiological characteristics and developmental-dynamics simulation strategy

Liu, Hui; Hu, Dawei; Dong, Chen; Fu, Yuming; Liu, Guanghui; Qin, Youcai; Sun, Yi; Liu, Dianlei; Li, Lei; Liu, Hong

doi:10.1016/j.jtbi.2017.05.024

Cited by 6 publications

(2 citation statements)

References 21 publications

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“…The results we obtained are in agreement with germination experiments of Hui et al (2017). They showed that wheat seeds (Triticum aestivum L.) irradiated with doses varying from 646 to 1,060 μGy s −1 , displayed germination percentages varying from 96 to 99%.…”

Section: Discussion Germinationsupporting

confidence: 91%

Influence of Martian Radiation-like Conditions on the Growth of Secale cereale and Lepidium sativum

Tack

Wamelink

Denkova

et al. 2021

Front. Astron. Space Sci.

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The Martian surface is constantly exposed to a high dose of cosmic radiation consisting of highly energetic particles and multiple types of ionizing radiation. The dose can increase temporarily by a factor of 50 through the occurrence of highly energetic solar flares. This may affect crop growth in greenhouses on the Martian surface possibly making settlement of humans more complicated. Shielding crops from radiation might be done at the expense of lighting efficiency. However, the most energy-efficient cultivation may be achieved through the use of natural daylight with the addition of LED lights. The goal of our research was to investigate whether Martian radiation, both the constant and the solar flares events, affects plant growth of two crop species, rye and garden cress. The levels of radiation received on the surface of Mars, simulated with an equivalent dose of 60Co γ-photons, had a significant negative effect on the growth of the two crop species. Although germination percentages were not affected by radiation, biomass growth was significantly decreased by 32% for cress and 48% for rye during the first 4 weeks after germination. Part of the biomass differences may be due to differences in temperature between radiation and control treatment, however it cannot explain the whole difference between the treatment and control. Coloring of leaves, necrosis and brown parts, was observed as well. Temporary increases in ionizing radiation dose at different development stages of the plants did not significantly influence the final dry weight of the crops.

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Section: Discussion Germinationsupporting

confidence: 91%

Influence of Martian Radiation-like Conditions on the Growth of Secale cereale and Lepidium sativum

Tack

Wamelink

Denkova

et al. 2021

Front. Astron. Space Sci.

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show abstract

“…It has been observed that at an early stage, growth is interrupted since the seedlings that form cannot survive after a certain period, which is probably due to DNA breakage and the inability to repair the damage (11,20,53). The prolongation of the growth interruption period can vary from a few minutes to several days, mainly according to the irradiation dose and the intrinsic radiosensitivity of the organism (34).…”

Section: Discussionmentioning

confidence: 99%

Germination and development of M1 seedlings of two Selliera radicans Cav. accessions subjected to gamma radiation

et al. 2021

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Selliera radicans is a creeping plant native to Chile, New Zealand and Australia. It is increasingly used in the ornamental industry, and there is interest in breeding it to create commercial varieties. The aim of this study was to determine the effects of different doses of gamma radiation applied to the seeds on the germination and development of seedlings (M1) and the LD50 of two accessions of Selliera radicans for use in the induction of mutations. Seeds of the Vichuquén and La Serena accessions were exposed to 0, 100, 200, 300, 400, 500, 600 and 700 Gy from a 60Co source. Weekly germination percentages along with seedling numbers and lengths were recorded. Vichuquén seeds were more sensitive to this physical agent. The LD50 was 243.9 Gy for Vichuquén and 445.6 Gy for La Serena. Seedling lengths reached almost 4 mm for Vichuquén and 11.3 mm for La Serena at 12 weeks after sowing. Doses lower than 200 Gy are recommended since higher doses do not allow the development of seedlings to the extended cotyledon stage. Highlights: This is the first radiosensitivity study for the Goodeniaceae family and therefore for the Selliera genus. This study shows the specific effect of gamma radiation at the level of germination and seedling formation according to accession of origin. This study could be used for the genetic improvement of Selliera radicans via the induction of mutations.

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Microbial diversity formed and maintained through substrate feedback regulation and delayed responses induced by Low-Dose Ionizing Radiation

Yang

Song

et al. 2021

Acta Astronautica

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Low-dose ionizing radiation limitations to seed germination: Results from a model linking physiological characteristics and developmental-dynamics simulation strategy

Cited by 6 publications

References 21 publications

Influence of Martian Radiation-like Conditions on the Growth of Secale cereale and Lepidium sativum

Influence of Martian Radiation-like Conditions on the Growth of Secale cereale and Lepidium sativum

Germination and development of M1 seedlings of two Selliera radicans Cav. accessions subjected to gamma radiation

Microbial diversity formed and maintained through substrate feedback regulation and delayed responses induced by Low-Dose Ionizing Radiation

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