Mechanisms of maternal inheritance. II. RNA synthesis involved in preferential destruction of chloroplast DNA of male origin.:RNA Synthesis Involved in Preferential Destruction of Chloroplast DNA of Male Origin

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概要

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• The mechanism of preferential destruction of chloroplast nucleoids from the male parent in young zygotes in Chiamydomonas reinhardii was studied using inhibitors of transcription, ultraviolet irradiation and an epifluorescent microscopy. Addition of an inhibitor (rifampisin) of transcription in chloroplasts has no effect on the preferential destruction of chloroplast nucleoids while addition of inhibitors (actinomycin D, α-amanitin) inhibited remarkably the preferential destruction of chloroplast nucleoids. In addition, UV irradiation of male gametes had no effect on the preferential destruction of chloroplast nucleoids while irradiation of female parent blocked the preferential destruction approx. 100%. The results suggest that soon after mating, the RNA which is synthesized in the female nucleus is involved in the preferential destruction of chloroplast nucleoids of male origin and there is a coupled RNA-protein system for the preferential destruction in young zygotes.

• 日本学士院の論文

著者

• Kawano Shigeyuki

  Department Of Biological Sciences Graduate School Of Science University Of Tokyo

• Kuroiwa Tsuneyoshi

  Department Of Biological Sciences Graduate School Of Science The University Of Tokyo

• SATO CHUBUN

  Department of Biology, Faculty of Science, Okayama University

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