Responses of tobacco leaf photosynthetic parameters to illuminance under attenuated UV-B radiation

The results indicate that the UV-B radiation reduction induces the contents of chlorophyll change significantly,but no difference among the ambient control and treatments of UV-A and UV-A+UV-B is o.

Interaction of UV-B radiation enhancement and athracene on the growth of three species of red tide microalgae;

The effect of UV-B radiation enhancement on the growth competition between Alexandriun tamarense and Heterosigma akashiwo;

Effects of supplemental UV-B radiation on growth,physiology and alkaloid of Fritillaria Thunnbergii Miq.;

Influences of enhanced ultraviolet radiation(UV B,280～315nm)on population quantity dynamics of weeds,soil macroanimals and wheat aphids in the wheat field ecosystem were investigated,Under UV B radiation,species number and population quantity of weeds and soil macroanimals decreased,species diversity changed,total biomass of weeds reduced.

Enhanced UV B radiation led to changes of the composition of fatty acids as well as decrease of IUFA in chloroplast membrane, increase in MDA content and accumulation of ABA and proline.

The interspecific competition between Ulva pertusa and Grateloupia filicina and it s response to the UV-B irradiation enhancement were analyzed using mono-culture and co-culture methods.

One UV-B tolerance strain that its extro cellular metabolites can protect it from UV-B irradiation is isolated using the two-step isolation method.

When submerged, macroalgae could also be obviously affected by UV-B irradiation because it is capable of penetrating the water column to an ecologically significant depth.