Transgeneration memory of stress in plants

Article Abstract:

Genome changes due to stress in plants are examined by treating Arabidopsis thaliana plants with short-wavelength radiation or flagellin, which reveals increased levels of a transgenic homologous recombination in the treated population, persisting for several subsequent, untreated generations in the lineage. The finding demonstrates a transgeneration memory of stress in plants and might increase the potential for adaptation of the plant species.

Environmental aspects, Arabidopsis thaliana, Ecological stress

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Pathogen-induced systematic plant signal triggers DNA rearrangements

Article Abstract:

Research has been conducted on tobacco plants infected with tobacco or oilseed mosaic viruses. The authors report the increase in the homologous recombination frequency in both infected and non-infected tissues of these plants, indicating that the systemic recombination signal increases the frequency of the meiotic and inherited late somatic recombinations.

Canada, Switzerland, Biological Product (except Diagnostic) Manufacturing, Drugs, Deoxyribonucleic Acid, Physiological aspects, Gene mutations, Gene mutation, Plant-pathogen relationships, Microbiology, Pathogenic microorganisms

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Elevated UV-B radiation reduces genome stability in plants

Article Abstract:

Research is presented concerning the damage to DNA which occurs in plants exposed to elevated ultraviolet-B radiation. The morphological and physiological responses of the exposed plants are discussed.

Ultraviolet radiation, Letter to the Editor, Somatic hybrids, Hybrid cells

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