Biological Consequences of Increased Ultraviolet Radiation Associated with Antarctic Ozone Depletion

最近，紫外线辐射（UVR）通量增加， 在南极洲，由于每年季节性的消耗， 平流层臭氧。 卡伦茨将进行初步的光生物学检查 为评估紫外线辐射率增加的影响而进行的调查 对南极生态系统的影响。 事件的潜在致突变性 紫外线辐射期间和之后的春季最大臭氧消耗将是 使用质粒载体和大肠杆菌B-半乳糖苷酶定量 突变筛查 物种的DNA修复能力将 通过程序外DNA合成和紫外线耐受性的方法进行评价 将通过观察UVR剂量依赖性 生长和光合作用的响应。 收集的数据将提供 可能影响的评估资料 紫外线辐射引起的南极分类结构的变化 群落相对于初级生产力和营养水平 交互. 该奖项是女性研究机会奖。

Increased fluxes of ultraviolet radiation (UVR) have recently occurred in Antarctica as a result of an annual seasonal depletion of stratospheric ozone. Karentz will conduct initial photobiological investigations for the evaluation of the impact of increased UVR exposures on Antarctic ecosystems. The mutagenic potential of incident UVR during and after the spring maximum of ozone depletion will be quantified using a plasmid vector and Escherichia coli B-galactosidase mutation screening. DNA repair capabilities of species will be evaluated by the method of unscheduled DNA synthesis, and UVR-tolerance characteristics will be assessed by observations of UVR dose-dependent responses of growth and photosynthesis. The data collected will provide information for the evaluation of the possible repercussions of UVR-initiated changes in the taxonomic structure of Antarctic communities relative to primary productivity and trophic-level interactions. This award is a Research Opportunities for Women award.