Lipids and pigment-protein complexes of photosynthetic apparatus of Deschampsia antarctica Desv. plants under UV-B radiation

N Yu Taran,N B Svietlova,V O Storozhenko,N M Topchiy

doi:10.7124/bc.00002a

Abstract

Lipids and pigment-protein complexes of photosynthetic apparatus of Deschampsia antarctica Desv. plants under UV-B radiation

Highlights

D. antarctica Desv. is the only native species of Poaceae found in Antarctica
The molar Chls/Cars ratio was lower in plants under UV-B radiation (1.62) in comparison with control one (2.36) (Fig. 1, a, b)
Our data agree with the results of other authors which showed that total Chl concentration was significantly lower in the plants grown under UV-B radiation [24]

Summary

Introduction

Is the only native species of Poaceae found in Antarctica. These plants are naturally adapted to the cold maritime Antarctic climate and high level of natural UV-B [1,2,3,4]. Many authors noted that the action of UV-B radiation on plants caused the reduction of biomass, leaf area, growth rate, and photosynthesis [5, 6]. UV-B radiation influenced the plant development at the physiological and biochemical levels, and at the genetic one [7]. High light (illumination) increased the degradation of ozonosphere. It caused enhancement of UV-B radiation level and induced the intensive formation of reactive oxygen species (ROS). We that investigation of these parameters is expedient to explain the mechanisms of D. antarctica plant resistance to UV-B radiation

Materials and methods

Results and discussion

Conclusions

Environmental effects of ozone depletion