Spatial And Temporal Expression Of Superoxide Dismutase And Organ Morphogenesis In Danio Rerio Embryo

The Danio rerio embryo is a popular material in development biology,, Our attention is to know how about the superoxide dismutase distribute in the developing Danio rerio embryo, and The embryo morphogenesis of Danio rerio was observed and described in detail?In the developing Danio rerio embryo, superoxide dismutase is firstly expressed at metaphase blastula stage, and locate in nucleolus of blastomeresoAt gastrula stage, superoxide dismutase is strongly expressed in epiblast , hypoblast , mesoblast through the gastrula stage . At Segmentation stage, superoxide dismutase is expressed in different intensity at many tissue , such as notochord eye and neural tube. At Pharyngula stage, superoxide dismutase is expressed in different intensity in Pharyngula and brain and other tissue. At hatching stage, the gut expressed strong intensity of superoxidase dismutase, but others do faintly. The result show that: superoxide dismutase is an important antioxidase enzyme in embryo developing, and the antioxidase system is established at the embryo developing stage. The enzyme-antioxidase system is maybe the first antioxidase line seted up in developing embryo.The morphogenesis progress of Danio rerio is prominent. At cleavage stage, the blastomeres assemble in animal pole, and the cleavage fashion is the same with hexapod's. in the early gastrula stage, The blastomeres hunch to a cap-like at animal pole, and disappear at anaphase blastula stage. At gastrula stage, the EVL epiboly the embryo from animal pole, and with the progress epiblast, hypoblast, mesoblast form. At segmentation stage, Organ primordiums form and begin morphogenesis, such as eye, brain , otic vesicle, olfactory vesicle. At Pharyngula stage, Heart beat and form at the stage. The Pharyngulas form in this stage, and the fisttwo Pharyngulas will to form jaw0 Hatching stage is the last period of embryo developing progress.. In this stage, the mouth and fins will form, and prepare for laver alive after hatchingo...