The lignin content of transgenic triploid Chinese white poplar (Populus tomentosa Carr.) expressing the antisense 4CL (4-coumarate: CoA ligase) cDNA was remarkably reduced.

• 将反义4CL(4-香豆酸辅酶A连接酶；4-coumarate: CoA ligase)基因转入三倍体毛白杨(Populus tomentosa Carr.；)