title: [Evaluation of the consequences of stress factors on plant seeds growing in a 30-km zone of Balakovo AES].
abstract: The effect of stress factors (small doses of radiation and maximum temperatures in the econiche of the tested plants (tmax)) as well as aging on pea seeds, both acting independently and in combination, is estimated. Here we evaluate the influence of oxidizing stress on pea seeds in the laboratory (gamma-irradiated with 7 cGy at 0.3-19.1 cGy/h, tmax approximately 30-32 degrees C) and on natural plantain seeds collected in a 30-km zone of NPP (radiation exposure approximately 15 R/h, tmax approximately 38-40 degrees C). We have mathematically modeled CAs frequencies in root seedlings meristeme by invoking an enhancing factor transmitted from cell to cell. It is shown under the stress conditions: 1) CA frequency decreases whereas the fraction of inviable seeds (IS) increases, the dependence of IS on CA frequency being inversed; 2) a stimulation of proliferation of cell was observed; 3) a bystander effect appears; 4) antioxidative status (AOS) of seeds influences on adaptation on the all levels of the organization; 5) IS increases up to 73-80% under the combined effect of radiation and heat stresses.
authors.affiliation: Joint Institute for Nuclear Research (JINR), Dubna, 141980 Russia. korogod@jinr.ru
authors.forename: V L
authors.initials: VL
authors.lastname: Korogodina
authors.forename: V P
authors.initials: VP
authors.lastname: Bamblevskiĭ
authors.forename: I V
authors.initials: IV
authors.lastname: Grishina
authors.forename: M V
authors.initials: MV
authors.lastname: Gustova
authors.forename: V
authors.initials: V
authors.lastname: Dzhavadova
authors.forename: M V
authors.initials: MV
authors.lastname: Zueva
authors.forename: V I
authors.initials: VI
authors.lastname: Korogodin
authors.forename: E L
authors.initials: EL
authors.lastname: Lozovskaia
authors.forename: A N
authors.initials: AN
authors.lastname: Malikov
authors.forename: O D
authors.initials: OD
authors.lastname: Maslov
authors.forename: L A
authors.initials: LA
authors.lastname: Mel'nikova
authors.forename: V P
authors.initials: VP
authors.lastname: Stepanchuk
authors.forename: B V
authors.initials: BV
authors.lastname: Florko
authors.forename: G V
authors.initials: GV
authors.lastname: Shliakhtin
mesh_terms: D024201:Bystander Effect; D004307:Dose-Response Relationship, Radiation; D005720:Gamma Rays; D006358:Hot Temperature; D018519:Meristem / Q000166:cytology / Q000528:radiation effects*; D008938:Mitosis; D008962:Models, Theoretical; D018384:Oxidative Stress; D018532:Pisum sativum / Q000166:cytology / Q000528:radiation effects*; D011210:Power Plants; D011829:Radiation Dosage; D012426:Russia; D012639:Seeds / Q000166:cytology / Q000528:radiation effects*; D013997:Time Factors