Photo reception of Algae Related to Chemical Ecology

1.类胡萝卜素大藓中的胡萝卜素由α-胡萝卜素和极少量的β-胡萝卜素组成。通过合成分析物、分离相关蛋白、测定荧光寿命等方法，研究了岩藻黄素与叶绿素的相互作用.藻类的趋光性和光传导物质藻类中的光传导物质被认为是cAMP，褐藻中的另一种光感受物质被认为是黄素衍生物。另一种可能性是在隐藻的光感受中，其趋光性是由未鉴定的光感受器介导的，而不是由藻胆素介导的。如果用视网膜类似物重建，衣原体突变体在吸收光下会光移动。用新研制的运动分析仪检测运动.白斑的结构与趋光性的再生蓝光诱导披衣菌的有性繁殖。偏光显微镜是鉴别衣原体眼斑的有力工具。氮源控制了光合反应.深水绿色藻类的化学生态学研究从绿色藻类中提取的色素中叶绿素B/a的摩尔比为1.61。

1. Carotenoids Carotenes in Bryopsis maxima consist of alpha-carotene with very small amount of beta-carotene. Interaction bet ween fucoxanthin and chl orohyll was elu cidat ed with use of synthesi zed anaogs, iso lation of the related protein, and measurement of fluorescence life time.2. Phototaxis of Algae and the Phototransductive Compounds Phototransductive compound in algae was fund to be c-AMP.Another photoreceptive compound in brown algae was suggested as flavin derivatives. The other possibility was proposed in photoreception of cryptomonas whose phototaxsis is mediated by unidentified photoreceptors other than phycobilins. Chlamydomonas mutant photomoves under absorbing light if it is reconstituted with retinal analogs. The movement was detected with otion analysis apparatus newly developed.3. Structure of Eye Spot and Regeneration of Phototaxis Blue light induced the sexual reproduction of chlamydomonas. The polarizing microscopeis a powerful tool to identify the eye spot of chlamydomonas. Photohobic response was controlled with nitrogen sources.4. Chemical Ecology of Deep-water Green Alga The molar ratio of chlorophyll b/a was determined tp be 1.61 in the pigments extracted from green algae.