PowerPoint プレゼンテーション

PowerPoint プレゼンテーション

Gametogenesis in the adult hermaphrodite of C. elegans oocyte eggs in uterus

spermatheca vulva gonad

Chromosome structures in the gonad of the adult hermaphrodite 0-8h: II (early embryogenesis) + III (diakinesis ooc II (early embryogenesis) + III (diakinesis ooc embry embryogenesis) + III (diakinesis oocogenesis) + III (diakinesis ooc + III (diakinesis ooc III (diakinesis ooc y embryogenesis) + III (diakinesis oocte) + III (diakinesis ooc

8-24h: II (early embryogenesis) + III (diakinesis ooc III + III (diakinesis ooc IV + V + VI (diplotene to pachytene nucle + III (diakinesis ooc V + V + VI (diplotene to pachytene nucle + III (diakinesis ooc V + V + VI (diplotene to pachytene nucleI (diplotene to pachy embryogenesis) + III (diakinesis ooctene nucle i) + III (diakinesis ooc (0- 8 h) + III (diakinesis ooc (8 22< h) 22< h) h) + III (diakinesis ooc Egg hatchability in the wild-type hermaphrodite after X-ray irradiation Egg hatchability in the wild-type hermaphrodite after heavy ions and UV irradiation

Requirement of Ce-rdh-1 & Ce-atl-1 genes for ds-b reak repair system Requirement of Ce-atl-1 gene for UV-damage repair system

CED3 apoptosis system is dispensable for ds-break repa ir system in meiotic cells. Conclusion

(1) Meiotic pachytene nuclei were hyper-resistant to X-ray, 12C, and 18Ar-ion beam irradiation. (2) It suggests that general recombination activity du ring meiosis can effectively repair ds-breaks and g aps by X-ray, 12C, and 18Ar-ion beam irradiation. (3) A checkpoint kinase Ce-atl-1 (ATM/ATR like 1) w

as also involved in repair for X-ray and UV dama ges of mitotic and meiotic cells.

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