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1.发明公开TRANSGENIC TREES EXHIBITING INCREASED GROWTH, BIOMASS PRODUCTION AND XYLEM FIBRE LENGTH, AND METHODS FOR THEIR PRODUCTION 有权具有产生增加的生物质生产和XYLEMFASERLÄNGE和方法转基因树木
公开(公告)号：EP1261726A1
公开(公告)日：2002-12-04
申请号：EP01912629.1
申请日：2001-03-02
申请人： Swetree Genomics AB
CPC分类号： C12N15/8297
摘要： Important aims in nearly all tree-breeding programs around the world are to produce plants with increased growth rates and stem volumes, and shorter rotation times. Such trees would yield more biomass per area unit. Here the present inventors have shown that when over-expressing a key regulatory gene in the biosynthesis of the plant hormone gibberellin (GA) in hybrid aspen (Populus tremula x P. tremuloides), improvements in valuable traits such as growth rate and biomass are obtained. In addition, these trees also have longer xylem fibers than unmodified wild type plants. Long fibres are very desirable in the production of strong paper, but it has not (as yet) proved possible to influence this trait by traditional breeding techniques. A further advantage of the present invention is that it may reduce or eliminate the use of growth influencing chemicals in forestry.
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