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学科主题: 药学
题名:
Reduction in amounts of mitochondrial DNA in the sperm cells as a mechanism for maternal inheritance in Hordeum vulgare
作者: Sodmergen; Zhang, QA; Zhang, YT; Sakamoto, W; Kuroiwa, T
关键词: maternal inheritance ; mitochondrial DNA reduction ; plastid exclusion ; sperm cell development ; Hordeum
刊名: PLANTA
发表日期: 2002-12-01
DOI: 10.1007/s00425-002-0853-y
卷: 216, 期:2, 页:235-244
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Plant Sciences
研究领域[WOS]: Plant Sciences
关键词[WOS]: PLASTID INHERITANCE ; GENERATIVE CELLS ; CYTOPLASMIC INHERITANCE ; BIPARENTAL INHERITANCE ; FERTILIZATION ; TRANSMISSION ; ANGIOSPERMS ; MICROSCOPY ; ALFALFA ; PLANTS
英文摘要:

It is known that extranuclear organelle DNA is inherited maternally in the majority of angiosperms. The mechanisms for maternal inheritance have been well studied in plastids but not in mitochondria. In the present study we examined the mitochondrial DNA in the male reproductive cells of Hordeum vulgare L. by immunoelectron microscopy. Our results show that the number of anti-DNA gold particles on sections of sperm cell mitochondria decreased by 97% during pollen development. The reduction occurred rapidly in the generative cells and subsequently in the sperm cells, concomitant with a remarkable reduction in mitochondrial volume. It seems that the copy numbers of mitochondrial DNA were reduced in the male reproductive cells, which may be a possible mechanism by which paternal transmission is inhibited. Unlike mitochondria, plastids are excluded from the generative cells during the first pollen mitosis. These data suggest a mechanism for maternal inheritance of mitochondria in angiosperms and for independent control of inheritance of mitochondria and plastids in H. vulgare.

语种: 英语
WOS记录号: WOS:000180037300006
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/64025
Appears in Collections:北京大学药学院_期刊论文

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作者单位: 1.Beijing Univ, Coll Life Sci, Beijing 100871, Peoples R China
2.Okayama Univ, Bioresources Res Inst, Okayama 7100046, Japan
3.Univ Tokyo, Sch Sci, Tokyo 1130033, Japan
4.Peking Univ, Coll Pharmaceut Sci, Beijing 100083, Peoples R China

Recommended Citation:
Sodmergen,Zhang, QA,Zhang, YT,et al. Reduction in amounts of mitochondrial DNA in the sperm cells as a mechanism for maternal inheritance in Hordeum vulgare[J]. PLANTA,2002,216(2):235-244.
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