Differential susceptibility of Spodoptera frugiperda (Lepidoptera: Noctuidae) to single versus pyramided Bt traits in Brazilian soybean: what doesn't kill you makes you stronger?

被引：0
作者：
Stirle, Jessica Lauanda [1 ]
Matias, Jordana Emannuelly Ferreira [1 ]
Mendes, Gabriel Ribeiro [1 ]
Moscardini, Valeria Fonseca [2 ]
Maia, Jader Braga [3 ]
Michaud, J. P. [4 ]
Gontijo, Pablo Costa [1 ]
机构：
[1] Inst Fed Goiano, Lab Entomol, Rodovia Goiana,Km 01,Zona Rural,Campus Rio Verde, BR-75901970 Rio Verde, GO, Brazil
[2] Corteva Agrisci, Crop Protect, Mogi Mirim, Brazil
[3] Univ Fed Triangulo Mineiro, Dept Agron, Iturama, Brazil
[4] Kansas State Univ, Agr Res Ctr Hays, Dept Entomol, Hays, KS USA
来源：
PEST MANAGEMENT SCIENCE | 2024年 / 80卷 / 12期
关键词：
hormesis; life; pest resistance; population dynamics; sublethal effects; transgenic crops; DAS-81419-2 EXPRESSING CRY1F; FIELD-EVOLVED RESISTANCE; TRANSGENIC CROPS; MANAGEMENT; PESTS; PERFORMANCE; STRATEGIES; ARMYWORM; PROTEINS; HORMESIS;
D O I：
10.1002/ps.8391
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
BACKGROUND: Lepidopteran pest control in agriculture has become heavily dependent on cultivars that express Bacillus thuringiensis (Bt) toxins as 'plant-incorporated protectants'. However, populations of Spodoptera frugiperda (Smith) in Brazil appear resistant to the Bt traits currently available in commercial soybean cultivars. RESULTS: This study evaluated S. frugiperda life history when feeding on three different Bt soybean cultivars. Cultivars expressing Cry1Ac + Cry1F and Cry1A.105 + Cry2Ab2 + Cry1Ac Bt toxins caused 100% larval mortality in S. frugiperda. Both non-Bt and Cry1Ac-expressing soybean induced transgenerational effects that increased the survival of subsequent generations. A Cry1Ac soybean diet reduced the generation time (T) of S. frugiperda relative to non-Bt soybean, resulting in shorter generation time and more rapid population growth. CONCLUSION: The implications of these results revealed how diet can alter aspects of insect life history and biology, and have important implications for sustainable management of S. frugiperda on soybean. (c) 2024 Society of Chemical Industry.
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收藏
页码：6535 / 6544
页数：10
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