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Updated: May 5, 2026

Optogenetic Random Mutagenesis Using Histone-miniSOG in C. elegans
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Optogenetic Random Mutagenesis Using Histone-miniSOG in C. elegans

Published on: November 14, 2016

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转子子诱导的表观遗传变化导致了瓜子的性别确定

Antoine Martin1, Christelle Troadec, Adnane Boualem

  • 1INRA-CNRS, UMR1165, Unité de Recherche en Génomique Végétale, 2 rue Gaston Crémieux, F-91057 Evry, France.

Nature
|October 23, 2009
PubMed
概括

植物的性别决定涉及瓜子的表观遗传变化,其中转子体插入会改变CmWIP1基因表达. 这控制了雄性,雌性和雌性花的发展,促进了物种进化的遗传多样性.

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In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
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Transposons, or "jumping genes," are small mobile genetic elements (MGEs) that range from 700 to 40,000 base pairs in length. They are found in all organisms and can move within the same chromosome or transfer to different chromosomes. In some cases, transposons can also jump between different host DNA molecules, such as plasmids or viruses, contributing to genetic variability.Barbara McClintock first discovered these mobile genetic elements in the 1940s while studying maize genetics, and she...
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