earticle

영어

The autotrophic system in Haematococcus pluvialis has two major merits compared with the other systems, prevention of contamination and highly enhanced total astaxanthin yield. That system, however, needs for a lot of time to enter the induction stage, particularly under the outdoor, in which the light source is not fixed and continuous. And two stress-inducible factors, salt stress and high temperature, were proposed to enhance the efficiency of it, but costly and high energy-consuming, respectively. Here we present the highly inducible Haematococcus mutant. This mutant has the lower photosystem II(PSII) efficiency compared with wild-type, improved the photosensitivity and seems to be suffered from the more increased photodamage like ROS(reactive oxygen stress) by photoinhibition than wild-type from the same light treatment. Light supply is the most energy-consuming factor in the microalgal culturing systems. This mutant should decrease the requirement of light energy source for the light-dependent induction, and particularly be useful to such an outdoor culturing system of Haematococcus cells.