Effect of UV Radiation and Other Abiotic Stress Factors on DNA of Different Wild Plant Species Grown in Three Successive Seasons in Alpine and Subalpine Regions

• DOI: 10.32604/phyton.2022.016397
• Publication Date: 2021-09-26T07:26:30Z
• Authors: Svetla P. Gateva; Gabriele Jovtchev; Tsveta V. Angelova; Tzvetana P. Nonova; Nikolay Tyutyundz...; Elena G. Geleva; Kostadin Katrandz...; Nina A. Nikolova; Dimitar Dimitrov; Christo V. Angelov
• Keywords: Orobanchaceae; Comet Assay; Onagraceae

Plants in natural ecosystems are exposed to a combination of UV radiation, ionizing radiation (IR) and other abiotic factors. These factors change with the altitude. We investigated DNA alterations some wild plants different plant families at three altitudes Rila Mountain, Bulgaria (1500, 1782, 2925 m above sea level (a.s.l.) IR stresses, assess tolerance species changing environmental conditions successive growth seasons. For this purpose, physicochemical, cytogenetic, molecular methods were applied. damage was assessed by micronucleus test method comet assay adapted applied us from Onagraceae, Rosaceae, Boraginaceae, Saxifragaceae, Orobanchaceae, Asteraceae Poaceae families, growing altitudes. Variability sensitivity observed among response combined induced gross beta activity. The studied representatives less susceptible than all showed close injuries that unaffected control grown laboratory conditions. lower levels these corresponded their ability accumulate radionuclides. There particularly pronounced low highest correlation values results would contribute elucidation extent adaptation continuously environment be useful selecting sensitive herbaceous monitor for impact assessment mountain alpine sites.