Study of light Signal Receptor of Stephanopyxis palmeriana during Sexual Reproduction


胡韌(Ren Hu);林均民(Jun-Min Lin);林秋奇(Qiu-Qi Lin);韓博平(Bo-Ping Han)

Key Words

diatom ; sexual reproduction ; photoperiod ; light signal receptor


Chinese Journal of Oceanology and Limnology

Volume or Term/Year and Month of Publication

23卷3期(2005 / 08 / 01)

Page #

330 - 334

Content Language


English Abstract

We collected centric diatom ”Stephanopyxis palmeriana” samples in coastal waters of Xiamen for characteristic red light/far red light (R/FR) phytochrome reactions to identify its photoreceptor in the course of sexual reproduction. The result showed that pre-illumination of 2-3h red light before darkness could induce sexualization of ”S. palmeriana”, while the follow-up illumination of far red light could reverse the effect of red light, which is a featured reaction of phytochrome. The Southern Dot Blot was carried out to identify the type of phytochrome that induces the sexualization. The result also showed high homogeneity of DNA fragment of ”S. palmeriana” with phyB, but phyA. This means the photoreceptor in the process of sexual reproduction of ”S. palmeriana” is phytochrome B (phyB).

Topic Category 基礎與應用科學 > 海洋科學