植物が分泌するプレバイオティクスの持続可能農業への応用可能性を発見(Plant-Exuded Prebiotics Have Potential for Sustainable Farming)

2026-06-01 中国科学院(CAS)

中国科学院西双版納熱帯植物園(XTBG)の研究チームは、持続可能な農業を実現する新たな手法として、植物が根から分泌する「プレバイオティクス」の活用戦略を提案した。従来、作物生育促進のため有用微生物(プロバイオティクス)の利用が期待されてきたが、圃場では生態学的な不安定性により効果が限定されることが多かった。研究では、ポリフェノール、フラボノイド、有機酸などの植物分泌物が、有益な土壌微生物を選択的に誘引し、病害抑制、養分吸収促進、土壌健全性の回復に寄与することを示した。研究チームは、植物・土壌マイクロバイオーム解析、人工微生物群集の設計、圃場検証を組み合わせた「PRE-DDV(Decode–Design–Validate)」という閉ループ型開発手法を提唱した。また、プレバイオティクスは病原菌よりも有益微生物が優先的に利用できる低分子化合物であるべきと定義した。今後は、植物由来原料や農業廃棄物の活用、効率的な施用技術の開発、コストや環境影響評価などが課題となる。本研究は、化学肥料や農薬への依存を低減し、気候変動に強い持続可能な農業の実現に向けた新たな指針を示した。

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植物由来のプレバイオティクスを活用した次世代の持続可能な農業戦略 Harnessing plant-exuded prebiotics as a next-generation strategy for sustainable agriculture

Adegboyega Adeniji, Misganaw Wassie, Miilion Paulos Madebo, Gang Liang
Journal of Integrative Plant Biology  Published: 28 April 2026
DOI:https://doi.org/10.1111/jipb.70275

ABSTRACT

Global agriculture urgently needs sustainable strategies to boost crop productivity while reducing environmental impact. Harnessing plant-exuded bioactive metabolites, such as polyphenols, flavonoids, and organic acids, as natural prebiotics offers a powerful yet underexploited avenue for modulating rhizosphere microbiomes. These prebiotics complement existing microbial inoculants by leveraging the plant’s own chemistry to selectively recruit beneficial microbes, thereby enhancing disease suppression, nutrient acquisition, and soil health more reliably than introduced consortia, which often fail due to ecological instability. However, translating this promise into practice is hampered by the profound complexity of the soil–root–microbe interface. This review establishes a conceptual framework that positions plant prebiotics as actionable tools for precision microbiome engineering. We summarize the biosynthetic pathways and mechanisms through which these specialized metabolites stimulate specific beneficial microbial functions. Building on this synthesis, we introduce the PRE-DDV pipeline (decode–design–validate), a closed-loop strategy integrating multi-omics profiling, synthetic community design, and iterative field validation. To enable commercial-scale field application, we critically examine key translational considerations: Identifying scalable plant sources (including native flora and agro-industrial byproducts), advancing formulation and precision delivery to ensure stability and targeted release, and assessing the economic feasibility, environmental sustainability, and regulatory frameworks governing industrial-scale production. Together, these contributions position prebiotics within a concrete pathway that bridges biological mechanisms and practical scalability, transforming them from a promising concept into a practical cornerstone of sustainable, climate-resilient agriculture.

1202農芸化学
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