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Bt-Modified Transgenic Rice May Shift the Composition and Diversity of Rhizosphere Microbiota

文献类型： 外文期刊

作者： Huang, Qixing 1 ; Zhang, Yuliang 1 ; Tan, Yanhua 1 ; Kong, Hua 1 ; Cao, Yang 1 ; Wang, Jungang 1 ; Yin, Guohua 4 ; Guo, Anping 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Natl Key Lab Trop Crop Breeding, Sanya 572024, Peoples R China

2.Chinese Acad Trop Agr Sci, Hainan Key Lab Biosafety Monitoring & Mol Breeding, Sanya Res Inst, Sanya 572024, Peoples R China

3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Natl Plant Protect Observat & Expt Stn Sanya, Sanya 572024, Peoples R China

4.Qilu Inst Technol, Coll Biol & Chem Engn, Jinan 250200, Peoples R China

5.State Univ New Jersey, Rutgers, Dept Plant Biol, New Brunswick, NJ 08901 USA

关键词： genetically modified rice; microbial communities; 16S ribosomal RNA; transgenic Bt rice variety; operational taxonomic units

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 10 期

页码：

收录情况： SCI

摘要： Plants significantly shape root-associated microbiota, making rhizosphere microbes useful environmental indicator organisms for safety assessment. Here, we report the pyrosequencing of the bacterial 16S ribosomal RNA in rhizosphere soil samples collected from transgenic cry1Ab/cry1Ac Bt rice Huahui No. 1 (GM crop) and its parental counterpart, Minghui63. We identified a total of 2579 quantifiable bacterial operational taxonomic units (OTUs). Many treatment-enriched microbial OTUs were identified, including 14 NonGM-enriched OTUs and 10 GM-enriched OTUs. OTUs belonging to the phyla Proteobacteria, Actinobacteria, Acidobacteria, Firmicutes, Nitrospirae, Chlorobi and GN04 were identified as statistically different in abundance between GM and the other two treatments. Compared with the different impacts of different rice varieties on microbiota, the impact of rice planting on microbiota is more obvious. Furthermore, Huahui No. 1 transgenic Bt rice had a greater impact on the rhizosphere bacterial communities than Minghui63. Early developmental stages of the transgenic Bt rice had a significant impact on many Bacillaceae communities. Soil chemical properties were not significantly altered by the presence of transgenic Bt rice. The peak concentration level of Bt protein products was detected during the seedling stage of transgenic Bt rice, which may be an intriguing factor for bacterial diversity variations. Based on these findings, we conclude that transgenic Bt rice has a significant impact on root-associated bacteria. This information may be leveraged in future environmental safety assessments of transgenic Bt rice varieties.

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