Production and characterization of the 13C/15N single‐labeled insecticidal protein Cry1Ab/Ac using recombinant Escherichia coli

Wang, Zibo; Hu, Cong; Sun, Yu; Jiang, Wei; Wu, Guogan; Pan, Aihu; Li, Peng; Tang, Xueming

doi:10.1002/mbo3.1125

Cited by 3 publications

(1 citation statement)

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“…The secretion through root exudates of Bt crops is the main way for Bt toxin to enter the soil ecosystem [ 5 ]. Bt toxins that are produced from genes engineered by artificial modification may thus potentially enter the rhizosphere as an exogenous toxic compound that interacts with native soil microorganisms [ 6 , 7 ]. The rapid increase in planting of Bt crops has led to global environmental concerns for applications related to Bt crops [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Combined metagenomic and metabolomic analyses reveal that Bt rice planting alters soil C-N metabolism

Wang

et al. 2023

ISME Communications

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The environmental impacts of genetically modified (GM) plants remain a controversial global issue. To address these issues, comprehensive environmental risk assessments of GM plants is critical for the sustainable development and application of transgenic technology. In this paper, significant differences were not observed between microbial metagenomic and metabolomic profiles in surface waters of the Bt rice (T1C-1, the transgenic line) and non-Bt cultivars (Minghui 63 (the isogenic line) and Zhonghua 11 (the conventional japonica cultivar)). In contrast, differences in these profiles were apparent in the rhizospheres. T1C-1 planting increased soil microbiome diversity and network stability, but did not significantly alter the abundances of potential probiotic or phytopathogenic microorganisms compared with Minghui 63 and Zhonghua 11, which revealed no adverse effects of T1C-1 on soil microbial communities. T1C-1 planting could significantly alter soil C and N, probably via the regulation of the abundances of enzymes related to soil C and N cycling. In addition, integrated multi-omic analysis of root exudate metabolomes and soil microbiomes showed that the abundances of various metabolites released as root exudates were significantly correlated with subsets of microbial populations including the Acidobacteria, Actinobacteria, Chloroflexi, and Gemmatimonadetes that were differentially abundant in T1C-1 and Mnghui 63 soils. Finally, the potential for T1C-1-associated root metabolites to exert growth effects on T1C-1-associated species was experimentally validated by analysis of bacterial cultures, revealing that Bt rice planting could selectively modulate specific root microbiota. Overall, this study indicate that Bt rice can directly modulate rhizosphere microbiome assemblages by altering the metabolic compositions of root exudates that then alters soil metabolite profiles and physiochemical properties. This study unveils the mechanistic associations of Bt plant-microorganism-environment, which provides comprehensive insights into the potential ecological impacts of GM plants.

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