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牵牛属质体DNA的父系遗传(英文)

PATERNAL INHERITANCE OF PLASTID DNA IN GENUS PHARBITIS

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【作者】 胡赞民胡适宜张金忠

【Author】 Hu Zan min and Hu Shi yi ** (College of Life Sciences ,Peking University,Beijing 100871) Zhang Jin zhong (College of Life Sciences,Nankai University,Tianjin 300071)

【机构】 北京大学生命科学学院!北京100871南开大学生命科学学院!天津300071

【摘要】 利用限制性片段长度多态性(RFLP)技术研究了牵牛属(Pharbitis)植物质体DNA 的遗传方式。结果表明,在牵牛(P. nil)×大花牵牛(P. limbata)和大花牵牛×牵牛中,质体DNA 为父系遗传。在大花牵牛×牵牛中,质体DNA还有可能为双亲遗传。研究证明牵牛属为被子植物中具有质体父系遗传方式的第三个属。牵牛属质体父系遗传机制尚不清楚,作者认为母系质体及其DNA 在受精后的释稀、排除和/或降解可能是质体父系遗传的基础

【Abstract】 The inheritance of plastid DNA in Pharbitis was studied by the method of restriction fragment length polymorphisms (RFLP).Experimental results showed that plastid DNA from Pharbitis was paternally inherited in reciprocal crosses,P. nil ×P. limbata and P. limbata×P. nil hybrids.But,in the cross of P. limbata×P. nil,the possibility of biparental inheritance of plastid DNA could not be roled out in our preliminary experiment.Thus Pharbitis became the third genus among angiosperms characterized with male plastid transmission.The mechanisms of paternal plastids DNA inheritance in Pharbitis is unclear.The authors proposed that dilution,exclusion and/or degeneration of maternal plastid,including their DNA,after fertilization should be considered.

  • 【文献出处】 植物学报 ,Acta Botanica Sinica , 编辑部邮箱 ,1996年04期
  • 【分类号】Q943.1
  • 【被引频次】14
  • 【下载频次】239
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