BIOSS Centre for Biological Signalling Studies, University of Freiburg, 79104 Freiburg, Germany.
BIOSS Centre for Biological Signalling Studies, University of Freiburg, 79104 Freiburg, Germany.
Curr Biol. 2016 Jul 11;26(13):R530-R532. doi: 10.1016/j.cub.2016.05.049.
Some plants can live for thousands of years, facing the problem of preventing accumulation of deleterious mutations. A recent study shows that massive tree stature requires surprisingly few stem cell divisions, and that the mutational load is not proportional to stature, but to branching order.
有些植物可以存活数千年，面临着防止有害突变积累的问题。最近的一项研究表明，巨大的树木体型需要的干细胞分裂数量惊人地少，而且突变负荷与体型不成比例，而是与分支顺序有关。
