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Background and aims <p>Rice is a major staple crop in China, and Heilongjiang Province is a core japonica rice production region. This study aimed to explore core microbiota composition and the influence of host genetic background on microbiota assembly.</p> Methods <p>Using Illumina NovaSeq 6000 sequencing, we analyzed endophytic bacteria diversity in 57 samples from 19 elite rice cultivars, identifying 792 OTUs.</p> Results <p>At the phylum level, Pseudomonadota dominated (80.3%-99.73%). Core microbiota at the genus level included <i>Pantoea</i>, <i>Xanthomonas</i>, <i>Luteibacter</i>, <i>Pseudomonas</i> and <i>Burkholderia-Caballeronia-Paraburkholderia</i>. Parental genetic background significantly influenced bacterial community structure similarity, with closer genetic relationships showing more complex bacterial interaction networks.</p> Conclusion <p>This study showed the compositional characteristics of the core microbiota in elite rice seeds from Heilongjiang and its relationship with parental genetic background, providing a theoretical basis for microbiome-assisted breeding in rice.</p>

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High-throughput sequencing-based analysis of the composition and diversity of endophytic bacterial community in seeds of elite rice resources from Heilongjiang area

  • 期刊论文

  • 发表日期：

    2026年1月6日

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  • He Peng,
  • Yongtao You,
  • Songwei Cao,
  • Yang Liu

摘要

Background and aims

Rice is a major staple crop in China, and Heilongjiang Province is a core japonica rice production region. This study aimed to explore core microbiota composition and the influence of host genetic background on microbiota assembly.

Methods

Using Illumina NovaSeq 6000 sequencing, we analyzed endophytic bacteria diversity in 57 samples from 19 elite rice cultivars, identifying 792 OTUs.

Results

At the phylum level, Pseudomonadota dominated (80.3%-99.73%). Core microbiota at the genus level included Pantoea, Xanthomonas, Luteibacter, Pseudomonas and Burkholderia-Caballeronia-Paraburkholderia. Parental genetic background significantly influenced bacterial community structure similarity, with closer genetic relationships showing more complex bacterial interaction networks.

Conclusion

This study showed the compositional characteristics of the core microbiota in elite rice seeds from Heilongjiang and its relationship with parental genetic background, providing a theoretical basis for microbiome-assisted breeding in rice.