数字农科院2.0

Advancing Plant Microbiome Research Through Host DNA Depletion Techniques

文献类型： 外文期刊

作者： Wang, Yao;Yang, Junbo;Hou, Huiyu;Song, Luyang;Cheng, Xu;Liu, Yong-Xin

作者机构：

关键词： （1-1-1）host DNA depletion;metagenomics;microbial enrichment;microbiome-based agriculture;plant microbiome

期刊名称： PLANT BIOTECHNOLOGY JOURNAL

ISSN： 1467-7644

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： Plants provide ecological habitats for diverse microorganisms, making accurate metagenomic sequencing essential for understanding the complex interactions that support plant growth, development and disease resistance. However, host DNA contamination poses a major challenge in plant microbiome studies, obscuring microbial genetic signatures and complicating the accurate analysis of microbial genomes. This review provides a comprehensive overview of current host DNA depletion strategies, including physical separation (e.g., filtration, gradient centrifugation), selective lysis and enzymatic treatments targeting plant cell walls. Advanced techniques such as targeted sequence capture with magnetic beads, methylation-based enrichment and nanopore selective sequencing offer additional options for host DNA removal. Despite these advances, current methods still face challenges in efficiency, specificity and applicability, emphasising the need for tailored strategies and the exploration of novel approaches for microbial enrichment. Innovations like CRISPR-Cas9 and chromatin immunoprecipitation-based host DNA depletion methods are proposed to provide novel directions for addressing current limitations. The development and refinement of host depletion techniques tailored to plant systems are crucial for enabling high-resolution, cost-effective metagenomic studies. These efforts promise to deepen our understanding of microbial diversity and functionality, ultimately accelerating microbiome-based innovations in crop improvement, sustainable agriculture and ecosystem resilience.

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