白杨细胞质遗传的细胞学机理(Ⅰ)：生殖细胞和精细胞中细胞质DNA的存在状况

崔彬彬; 李云; 金晓洁; 冯慧

白杨细胞质遗传的细胞学机理(Ⅰ)：生殖细胞和精细胞中细胞质DNA的存在状况

1 北京林业大学林木育种国家工程实验室, 林木花卉遗传育种教育部重点实验室，国家林业局树木花卉育种与生物工程重点开放实验室 2 保定学院生化系 3 北京市园林科学研究所

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出版历程
- 收稿日期: 1899-12-31
- 修回日期: 1899-12-31
- 发布日期: 2010-09-29

Cytological mechanism of cytoplasmic inheritance in section Leuce:Ⅰ. Cytoplasmic DNA within generative cell and sperm cell

1 National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of State Forestry Administration, Beijing Forestry University, 100083, P.R. China; 2 Department of Biology and Chemistry, Baoding University, Hebei, 071000,P.R.China； 3 Beijing Institute of Landscape Architecture,100102, P.R.China.

摘要

摘要: 应用DAPI、DiOC荧光法与激光共聚焦电镜技术，观察白杨派树种毛白杨、毛新杨、银腺杨、中国山杨花粉发育中生殖细胞的细胞质DNA及其在精细胞形成过程中的动态。结果表明：不同发育时期的生殖细胞、精细胞中不存在具有DNA的细胞器，为白杨派树种具有母系遗传的潜能提供了细胞学证据；其中，线粒体在花粉发育过程中一直存在，但其DNA发生了降解，从而使父系线粒体DNA的传递中断，导致了线粒体的母系遗传。细胞学观察发现，银腺杨少数质体及其DNA被排除和降解的时期相对迟缓。本文还对被子植物线粒体遗传的机理进行了讨论。
- 白杨 /
- 生殖细胞 /
- 精细胞 /
- 细胞质DNA /
- 细胞质遗传
Abstract: The cytoplasmic DNA in generative cell and its behavior during spermatogenesis in Populus tomentosa, P. tomentosa × P. bolleana, P. alba × P. glandulosa and P. davidiana were observed by laser confocal microscopy with 4’,6-diamidino-2-phenylindole (DAPI) and 3,3’-dihexyloxacabocyanine iodide (DiOC). The results showed that the organelle DNA was not present during different stages of generative cell and sperm cell, which provided cytological evidence of potential maternal inheritance in section Leuce. The mitochondria were still present, but their DNA gradually degenerated and disappeared during pollen development. Consequently, the transmission of paternal mitochondrial DNA was interrupted, producing maternal inheritance of mitochondria. Meanwhile, relatively later elimination or degeneration of some plastids and their DNAs were found in P. alba × P. glandulosa. Finally, mitochondrial genetic mechanism in angiosperms was also discussed.
- white poplar /
- generative cell /
- sperm cell /
- cytoplasmic DNA /
- cytoplasmic inheritance

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文章访问数: 1970
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白杨细胞质遗传的细胞学机理(Ⅰ)：生殖细胞和精细胞中细胞质DNA的存在状况

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Cytological mechanism of cytoplasmic inheritance in section Leuce:Ⅰ. Cytoplasmic DNA within generative cell and sperm cell

期刊类型引用(5)

其他类型引用(7)

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