College of Biological Sciences and Biotechnology, Beijing Forestry University, No. 35 Qinghua East Road, Haidian District, 100083, Beijing, People's Republic of China.
Mol Biol Rep. 2010 Feb;37(2):819-24. doi: 10.1007/s11033-009-9627-y. Epub 2009 Jul 21.
Telomeres have lately received considerable attention in the development of tree species. Normal somatic cells have limited replicative capacity and telomeres get shorten with each round of DNA replication. For broad-leaved tree species, to determine what changes happen to their somatic cells in its annual development cycle, an exhaustive research on different ages of gingko trees telomere length changes was carried out. Analysis of changes in leaf telomere lengths in the annual development cycle of Ginkgo biloba L. showed no significant changes (P > 0.05) from April to August, but a dramatic decrease in September and October (P < 0.05). Statistical analyses showed that TRF length of males and females are equal, the p values of the three age groups comparison were all bigger than 0.05. The results showed that specific apoptotic changes occur in the annual development cycle of Ginkgo biloba L.
端粒最近在树种发育方面受到了相当大的关注。正常体细胞的复制能力有限，并且随着每一轮 DNA 复制，端粒会缩短。对于阔叶树种，为了确定其体细胞在年度发育周期中会发生什么变化，对不同年龄的银杏树的端粒长度变化进行了详尽的研究。分析银杏叶端粒长度在年度发育周期中的变化，从 4 月到 8 月没有显著变化（P > 0.05），但在 9 月和 10 月急剧下降（P < 0.05）。统计分析表明，雌雄个体的 TRF 长度相等，三个年龄组的比较 p 值均大于 0.05。结果表明，银杏的年度发育周期中会发生特定的细胞凋亡变化。
