Responses of Different Morphological Cells of <i>Phaeocystis globosa</i> to UV-B Radiation

Abstract

Phaeocystis globosa is an important member of the plankton community and was considered to be a typical bloom-forming algae. Its life cycle is variable, comprising both solitary and colony cells. The growth process of P. globosa is vulnerable to UV-B radiation. However, the influence of UV-B on photosynthetic activity and the resulting programmed cell death (PCD) process is not entirely understood. Our findings demonstrated that Fv/Fm, rETRmax, Y(II) and α of solitary and colony cells were significantly decreased after UV-B treatment (p p p p P. globosa.

Keywords

• UV-B radiation
• bloom
• <i>Phaeocystis globosa</i>
• colony cells
• solitary cells
• PCD