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首页> 外文会议>5th International Workshop on Management of the Diamondback Moth and Other Crucifer Insect Pests(第五届小菜蛾及其他十字花科蔬菜害虫治理国际研讨会) >Bt crucifers：From a model system to a commercial project
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Bt crucifers：From a model system to a commercial project

机译：Bt crucifers：从模型系统到商业项目

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In 2006,cotton and maize plants expressing insecticidal proteins from the bacterium Bacillus thuringiensis(Bt)were grown on 32.1 million ha.A number of other Bt crops have been developed,but are not vet commercialized. This includes Bt crucifers for control of the diamondback moth,Plutella xylostella (L.)and other Lepidoptera.Beginning in 1991,our collaborative program developed a model system using Bt crucifel'S and P.xylostella resistant to specific Bt proteins in order to study resistance management strategieS for Bt cotton and Bt corn,which were commercialized in 1996. This system was unique because P.xylostella was the only insect that had evolved resistance to Bt proteins in the field due to intense spraying of Bt foliar products.Over the last 16 years,we have demonstrated the value of refuges for conserving Bt susceptible alleles in a population,the value of pyramiding Bt genes to delay the evolution of resistance,and the risk of simultaneous deployment of single Bt plants with dual Bt plants that contain one of the same genes.While these findings have importance to the currently available Bt crops,these findings will become even more important because Bt crucifers may become available in developing countries through a privatepublic partnership,the Collaboration on Insect Management for Brassicas in Asia and Africa(CIMBAA).With the long history of developing integrated pest management(IPM)programs for cruciferous vegetables and the experience from 16 years of working on Bt crucifers,it is apparent that no other Bt crop has a larger knowledge base for IPM and resistance management than Bt crucifers for control of P.xylostella.
机译：2006年，表达苏云金芽孢杆菌（Bt）的杀虫蛋白的棉花和玉米植株生长在3210万公顷。许多其他Bt作物已经开发，但尚未进行商业化处理。这包括用于控制小菜蛾的Bt十字花科植物，小菜蛾（Plutella xylostella（L.））和其他鳞翅目。从1991年开始，我们的合作程序开发了一个使用Bt十字花科和小菜蛾对特定Bt蛋白具有抗性的模型系统，以研究抗性管理Bt棉花和Bt玉米的战略于1996年商业化。该系统之所以独特，是因为在过去16年中，由于强烈喷洒Bt叶产品，小菜蛾是唯一在田间对Bt蛋白产生抗性的昆虫。 ，我们已经证明了保护种群中Bt敏感等位基因的避难所的价值，金字塔Bt基因延缓抗药性进化的价值以及单一Bt植物与包含相同Bt植物的双重Bt植物同时部署的风险尽管这些发现对目前可利用的Bt作物很重要，但由于Bt十字花科植物可能会在发育中获得，这些发现将变得更加重要。通过私营公共伙伴关系，亚洲和非洲的甘蓝型油菜病虫害防治合作组织（CIMBAA）吸引各国。凭借开发十字花科蔬菜病虫害综合防治（IPM）计划的悠久历史以及16年从事Bt十字花科植物研究的经验，显然，没有其他Bt作物拥有比Bt十字花科植物更广泛的IPM和抗性管理知识，以控制小菜蛾。

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