文献类型： 外文期刊

作者： Yang, Xianming ¹ ; Zhao, Shengyuan ¹ ; Liu, Bing ¹ ; Gao, Yu ¹ ; Hu, Chaoxing ² ; Li, Wenjing ³ ; Yang, Yizhong ⁴ ; Li, Guoping ⁵ ; Wang, Lili ⁶ ; Yang, Xueqing ⁷ ; Yuan, Haibin ⁸ ; Liu, Jian ⁹ ; Liu, Dazhong ¹ ; Shen, Xiujing ¹ ; Wyckhuys, Kris A. G. ¹ ; Lu, Yanhui ¹ ; Wu, Kongming ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing, Peoples R China

2.Guizhou Univ, Inst Entomol, Guizhou Prov Key Lab Agr Pest Management Mt Reg, Guiyang, Peoples R China

3.Hubei Acad Agr Sci, Inst Plant Protect & Soil Fertil, Wuhan, Peoples R China

4.Yangzhou Univ, Coll Hort & Plant Protect, Yangzhou, Jiangsu Provinc, Peoples R China

5.Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou, Peoples R China

6.Yantai Acad Agr Sci, Yantai, Peoples R China

7.Shenyang Agr Univ, Coll Plant Protect, Shenyang, Peoples R China

8.Jilin Agr Univ, Coll Plant Protect, Changchun, Peoples R China

9.Northeast Agr Univ, Coll Agr, Harbin, Peoples R China

10.Chinese Acad Agr Sci, Agr Informat Inst, Beijing, Peoples R China

11.Fujian Agr & Forestry Univ, Fuzhou, Peoples R China

12.Univ Queensland, Brisbane, Qld, Australia

13.Chrysalis Consulting, Hanoi, Vietnam

关键词： Bt maize; lepidopteran pest pressure; seed mixtures; block refuge; crop yield; mycotoxin contamination

期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：13.263； 五年影响因子：11.619 ）

ISSN： 1467-7644

年卷期：

页码：

收录情况： SCI

摘要： China is the world's second-largest maize producer and consumer. In recent years, the invasive fall armyworm Spodoptera frugiperda (J.E. Smith) has adversely affected maize productivity and compromised food security. To mitigate pest-inflicted food shortages, China's Government issued biosafety certificates for two genetically modified (GM) Bt maize hybrids, Bt-Cry1Ab DBN9936 and Bt-Cry1Ab/Cry2Aj Ruifeng 125, in 2019. Here, we quantitatively assess the impact of both Bt maize hybrids on pest feeding damage, crop yield and food safety throughout China's maize belt. Without a need to resort to synthetic insecticides, Bt maize could mitigate lepidopteran pest pressure by 61.9-97.3%, avoid yield loss by 16.4-21.3% (range -11.9-99.2%) and lower mycotoxin contamination by 85.5-95.5% as compared to the prevailing non-Bt hybrids. Yield loss avoidance varied considerably between experimental sites and years, as mediated by on-site infestation pressure and pest identity. For either seed mixtures or block refuge arrangements, pest pressure was kept below established thresholds at 90% Bt maize coverage in Yunnan (where S. frugiperda was the dominant species) and 70% Bt maize coverage in other sites dominated by Helicoverpa armigera (Hubner) and Ostrinia furnacalis (Guenee). Drawing on experiences from other crop/pest systems, Bt maize in se can provide area-wide pest management and thus, contribute to a progressive phase-down of chemical pesticide use. Hence, when consciously paired with agroecological and biodiversity-based measures, GM insecticidal crops can ensure food and nutrition security, contribute to the sustainable intensification of China's agriculture and reduce food systems' environmental footprint.