Genetic consequences of radioactive contamination for populations of Arabidopsis

Abramov, Vladimir; Федоренко, О. М.; Shevchenko, V.A.

doi:10.1016/0048-9697(92)90234-j

Cited by 40 publications

(15 citation statements)

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“…Plants grown at the control plot were exposed to relatively low, near background radiation levels. It was shown previously that plants grown at Yanov 12-6 had 2-to 3-fold higher incidences of embryonic lethal mutants compared to plants grown at Tolsty Les and 10 to 15 times higher compared to Chernobyl (Abramov et al, 1992). Plants collected from all experimental plots had similar phenotypic appearance.…”

Section: Collection Of Plants From Chernobyl Exclusion Zonementioning

confidence: 60%

“…Absorbed dose (Gy) was estimated from the readings as well as from weighed leaf powder samples. For more detailed information, see Abramov et al (1992).…”

Section: Plant Materialsmentioning

confidence: 99%

“…Several studies have been conducted to analyze plant performance under acute and chronic radiation exposure. They revealed a high frequency of chromosome aberrations in Crepis tectorum, winter rye (Secale cereale), and wheat (Triticum aestivum) populations grown in the Chernobyl exclusion zone (Shevchenko and Grinikh, 1990;Shkvarnikov, 1990;Ziablitskaia et al, 1996), increased incidences of DNA single-strand breaks (Syomov et al, 1992), increased frequency of embryonic lethal mutants (Abramov et al, 1992), as well as pronounced dose-dependent genome destabilization (Kovalchuk et al, 1998(Kovalchuk et al, , 2000b.…”

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confidence: 99%

“…Adaptation is a complex process by which populations of organisms respond to long-term environmental stresses by permanent genetic or epigenetic change. Ecological surveys have revealed the existence of specific communities of endemic plant species that adapted to survival in the radioactively polluted soil (Abramov et al, 1992). This has prompted us to investigate the existence of highly debated adaptation phenomena, as well as their possible molecular mechanisms.…”

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confidence: 99%

“…In the course of the unique natural open-field radiation adaptation experiment, we analyzed several generations of Arabidopsis plants native to the Chernobyl reactor area. These plants were collected from 1986 to 1992 in the Chernobyl area, where they received different doses of radiation (Abramov et al, 1992). Genetic analysis of embryonic lethal mutations in these plants has shown significant dose dependence (Abramov et al, 1992).…”

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confidence: 99%

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Molecular Aspects of Plant Adaptation to Life in the Chernobyl Zone

et al. 2004

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With each passing year since the Chernobyl accident of 1986, more questions arise about the potential for organisms to adapt to radiation exposure. Often this is thought to be attributed to somatic and germline mutation rates in various organisms. We analyzed the adaptability of native Arabidopsis plants collected from areas with different levels of contamination around the Chernobyl nuclear power plant from 1986 to 1992. Notably, progeny of Chernobyl plants resisted higher concentrations of the mutagens Rose Bengal and methyl methane sulfonate. We analyzed the possible molecular mechanisms of their resistance to mutagens and found a more than 10-fold lower frequency of extrachromosomal homologous recombination, significant differences in the expression of radical scavenging (CAT1 and FSD3) and DNA-repair (RAD1 and RAD51-like) genes upon exposure to mutagens (Rose Bengal and x-rays), and a higher level of global genome methylation. This data suggests that adaptation to ionizing radiation is a complex process involving epigenetic regulation of gene expression and genome stabilization that improves plants' resistance to environmental mutagens.

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Section: Collection Of Plants From Chernobyl Exclusion Zonementioning

confidence: 60%

“…Absorbed dose (Gy) was estimated from the readings as well as from weighed leaf powder samples. For more detailed information, see Abramov et al (1992).…”

Section: Plant Materialsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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