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转基因玉米LD05对秋季军虫 (Spodoptera frugiperda) 的有效性

Wenlan Li¹, Xiang Gao², Xinwei Hou¹

¹Maize Research Institute, Shandong Academy of Agricultural Sciences, Shandong Key Laboratory of Maize Biological Breeding, National Engineering Center of Wheat and Maize, Jinan 250100, China.

Plants (Basel, Switzerland)

|August 28, 2025

概括

新的LD05转基因玉米有效地控制了侵袭性秋季军虫,减少了作物损害和农药的使用. 这项研究证实了其在中国实验室和实地试验中的强效.

科学领域:

农业科学
昆虫学
生物技术

背景情况:

秋季军虫 (Spodoptera frugiperda) 在中国 (2018年) 的入侵严重影响了玉米产量,增加了对农药的依赖.
基于Bacillus thuringiensis (Bt) 的转基因玉米为S. frugiperda的管理提供了一个环保的解决方案.
转基因玉米LD05,用m2cryAb-vip3A融合基因进行设计,

研究的目的:

评估转基因玉米LD05对Spodopterafrugiperda的抑制功效.
在实验室和实地环境中评估LD05对秋季军虫种群和作物损害的影响.
与传统玉米相比,分析LD05的农学性能.

主要方法:

实验室生物测试确定了M2CryAb-VIP3A对虫的致命度 (LC50,LC95,GLC50,GLC95).
在LD05玉米中分析M2CryAb-VIP3A的组织特异表达.
实地试验比较了LD05和非Bt对照 (Zheng58) 玉米的秋季军虫感染,叶子损伤和植物损伤.
分析了LD05和Zheng58的农学特征.

主要成果:

M2CryAb-VIP3A对虫具有强烈的毒性 (例如,LC50=0.024μg/cm2).
M2CryAb-VIP3A的表达因组织而异,在V5阶段的叶子中观察到的幼虫死亡率最高.
与对照组相比,LD05玉米显著减少了秋季军虫种群和作物损害.
在LD05和Zheng58之间没有观察到显著的农学特征差异.

结论:

转基因玉米LD05在控制秋季军虫方面表现出显著的有效性.
LD05为中国的S. frugiperda综合防治提供了可行的有效策略.
这种基因改造不会对玉米的农业性能产生不利影响.

关键词:

农业学特征有效性时间表达秋季军转基因玉米 LD05

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