申请人:Dow AgroSciences LLC
公开号:EP2308976A2
公开(公告)日:2011-04-13
The subject invention provides novel plants that are not only resistant to 2,4-D and other phenoxy auxin herbicides, but also to aryloxyphenoxypropionate herbicides. Heretofore, there was no expectation or suggestion that a plant with both of these advantageous properties could be produced by the introduction of a single gene. The subject invention also includes plants that produce one or more enzymes of the subject invention alone or "stacked" together with another herbicide resistance gene, preferably a glyphosate resistance gene, so as to provide broader and more robust weed control, increased treatment flexibility, and improved herbicide resistance management options. More specifically, preferred enzymes and genes for use according to the subject invention are referred to herein as AAD (aryloxyalkanoate dioxygenase) genes and proteins. No α-ketoglutarate-dependent dioxygenase enzyme has previously been reported to have the ability to degrade herbicides of different chemical classes and modes of action. This highly novel discovery is the basis of significant herbicide tolerant crop trait opportunities as well as development of selectable marker technology. The subject invention also includes related methods of controlling weeds. The subject invention enables novel combinations of herbicides to be used in new ways. Furthermore, the subject invention provides novel methods of preventing the formation of, and controlling, weeds that are resistant (or naturally more tolerant) to one or more herbicides such as glyphosate.
本发明提供的新型植物不仅能抗 2,4-D 和其他苯氧基助剂除草剂,还能抗芳基氧基苯氧基丙酸酯除草剂。在此之前,人们并不期望或认为通过引入单一基因就能培育出同时具有这两种优势特性的植物。本发明还包括单独产生一种或多种本发明酶的植物,或与另一种除草剂抗性基因(最好是草甘膦抗性基因)"叠加 "在一起的植物,从而提供更广泛、更强大的杂草控制,增加处理灵活性,改进除草剂抗性管理选择。更具体地说,根据本发明使用的优选酶和基因在此称为 AAD(芳氧基烷酸二加氧酶)基因和蛋白。以前没有报道过依赖于α-酮戊二酸的二加氧酶具有降解不同化学类别和作用方式的除草剂的能力。这一高度新颖的发现是重要的耐除草剂作物性状机会以及可选择标记技术发展的基础。本发明还包括控制杂草的相关方法。本发明可使除草剂的新组合以新的方式使用。此外,本发明还提供了防止形成和控制对一种或多种除草剂(如草甘膦)具有抗性(或天然更耐受)的杂草的新方法。