林木基因组学研究进展

Progress in Research on Forest Tree Genomics

林木基因组学研究进展迅速。结构基因组学方面,已构建了近40个主要造林树种的遗传连锁图谱,在不同树种中定位了30余个重要的数量性状位点,在部分树种中开展了基因组比较和综合图谱构建研究,杨树的全基因组测序已经完成,桉树的全基因组测序正在进行。功能基因组学方面,已分析了主要造林树种多种组织的转录组EST序列,对林木次生生长与木材形成、开花和抗寒性的形成等过程开展了功能基因组学研究。另外,探讨了林木基因组学研究的发展趋势,以期为我国林木基因组学研究提供有益的参考。

This is a review on forest tree genomics. In structural genomics, genetic maps have been constructed for up to 40 forest tree species, more than 30 commercially important QTLs have been detected, comparative mapping has been done for a few of forest tree taxa, and whole genome sequencing was completed for Populus and is under way for Eucalyptus. For functional genomics, huge EST databases from multiple tissues of a number of tree species have been rapidly accumulated, and molecular analyses on secondary growth and wood formation, flowering, and cold hardiness have given some insights into the metabolic pathways of those tree-specific development processes. The prospects of development in tree genomics are discussed, which may be implicative for accelerating forest tree genomics studies in China.