Physiological response of red macroalgae Pyropia yezoensis (Bangiales, Rhodophyta) to light quality: a short-term adaptation

Light quality is a common environmental factor which influences the metabolism of biochemical substances in algae and leads to response algal growth development. <i>Pyropia yezoensis</i> kind economic macroalgae that naturally grows intertidal zone where light environment changes dramatically. In present study, <i>P. thalli were treated under white (control) monochromatic lights with primary colors (blue, green, red) for 14 days explore their physiological quality. During first 3 treatment, grew faster blue than other qualities. next 11 days, it showed better adaptation green light, higher rate photosynthetic capacity (reflected by rETRmax = 61.58 Ek 237.78). A non-photochemical quenching was observed treatment red others days. Furthermore, also results difference pigment contents. The could reduce synthesis all pigments, but reduction degree different, may relate spectral absorption characteristics pigments. It speculated adapted specific or changing environments regulating pigments achieve best use energy photosynthesis premium metabolism.