Germinal Plasm and Localization of PAS Positive Substances and Acid Phosphatase in Japanese Frogs

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概要

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• The lineage of primordial germ cells was studied in Rana japonica, R. nigromaculata and R. brevipoda, and the relation between germinal plasm and two substances, PAS positive substances and acid phosphatase, was examined. Germinal plasm basically remained the same in shape and behavior until the gastrula stage in three species. After this stage, the cells containing germinal plasm could be identified only in R. japonica. Some of the PAS positive substances localized specifically in germinal plasm after the late cleavage stage. In two species, R. nigromaculata and R. brevipoda, the PAS positive reaction was transposed at the neurula stages from cytoplasm surrounding the nucleus to granular bodies. The cells with granular bodies then migrated from ventral to dorsal endoderm, the same direction as the migration of presumptive primordial germ cells. Finally, these granules became located in primordial germ cells. Acid phosphatase localized specifically in germinal plasm until the tail-bud stage in R. japonica and until the neurula stage in R. brevipoda. Subsequently, this enzyme was not necessarily specific in some limited cells ; most cells in the endoderm indicated this enzyme activity.

• 社団法人日本動物学会の論文
• 1980-09-25

著者

• Shirane Terukiyo

  Department Of Information And Behavior Science Faculty Of Integrated Art And Sciences Hiroshima Univ

関連論文

• Regulation of Gonadal Differentiation in Frogs Derived from UV-irradiated Eggs(Developmental Biology)
• Germinal Plasm and Localization of PAS Positive Substances and Acid Phosphatase in Japanese Frogs
• Effect of Postponement of Insemination in Frog Eggs Kept in vitro on the Development of Germinal Plasm and Primordial Germ Cells
• Germ Cells of Larvae Raised from Pressed Eggs of Rana japonica upon Irradiation with Ultraviolet Rays

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