Recently, the research paper titled "CCCH-type zinc finger proteins are required for meiotic progression and RNA clearance in Arabidopsis," authored by the Plant Fertility Development Research Team from the School of Life Sciences at Shanghai Normal University(SHNU), was published online in the journal *The Plant Cell*. The study reveals that tandem CCCH-type zinc finger proteins C3H14 and C3H15 serve as core regulatory factors for RNA degradation in microspore mother cells of Arabidopsis.
Meiosis is the foundation of sexual reproduction in eukaryotes, involving a series of highly ordered cellular events. At the chromosomal level, homologous chromosomes from maternal and paternal origins pair with each other, followed by extensive chromosome condensation and recombination, enabling allele rearrangement and increasing genetic diversity in offspring. At the cytoplasmic level, meiotic prophase is often accompanied by significant RNA clearance. Studies in animals have shown that abnormal RNA degradation can lead to meiotic arrest in mice during the pachytene stage. In plants, as early as over 80 years ago, scientists observed massive RNA degradation in microspore mother cells (MMCs) during meiotic prophase, accompanied by dedifferentiation of diploid organelles, suggesting that RNA degradation may play a crucial role in meiosis. However, its molecular mechanisms and biological significance remain unclear to this day.
The paper can be reached by clicking https://academic.oup.com/plcell/advance-article-abstract/doi/10.1093/plcell/koag048/8501334?redirectedFrom=fulltext.
