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Potential Mechanisms Underlying the Minimal Impact of Cry1Ab1 Protein on Myzus persicae

文献类型： 外文期刊

作者： Liang Jin;Binwu Zhang;Luis Carlos Ramos Aguila;Jingwen Lu;Xueke Gao;Junyu Luo;Jinjie Cui;Yi Lin

作者机构：

关键词： Bacillus thuringiensis;Cry-binding proteins;Cry1Ab1 protein;Myzus persicae;non-target

期刊名称： International Journal of Molecular Sciences

ISSN： 1661-6596

年卷期： 2025 年 26 卷 7 期

页码：

收录情况： SCIE（2025版）

摘要： Transgenic crops have been commercially cultivated for nearly three decades, leading to increasing concerns about their environmental safety, particularly their effects on non-target organisms. This study investigated the underlying mechanisms behind the lack of impact of the Cry1Ab1 protein on the Myzus persicae. The Cry1Ab1 protein showed no significant impact on the survival and development of M. persicae. Compared to other Cry protein, fewer Cry1Ab1-binding proteins were identified including beta-actin, ATP synthase subunit alpha, and GPN-loop GTPase 2. Transcriptomic analysis showed that a small set of pathways, mainly involved in immune defense, were temporarily enriched at 24 h after exposure to the Cry1Ab1 protein, while no significant pathways were enriched at 48 h in M. persicae. The results suggest that the Cry1Ab1 protein has a transient and minimal impact on M. persicae. Further structural comparisons between Cry1Ab1 and other Cry proteins (e.g., Cry1Ac) revealed significant differences in Domain III, which likely reduced the binding efficiency and impact on M. persicae’s metabolism and biological traits. This study provides valuable insights into the molecular and functional mechanisms behind the ineffectiveness of Cry1Ab1 on M. persicae and contributes to the safety evaluation of Bt for non-target organisms.

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