Exploring the wild soybean derived cross-kingdom SynCom for mitigating continuous cropping obstacles: potential links to fungus-associated bacterial dispersal and root exudate reprogramming.

A cross-kingdom synthetic community built from wild soybean rhizospheres (SSC) mitigates continuous cropping obstacle–linked growth inhibition and phenolic autotoxin buildup in a hydroponic model.

• Why it matters: Continuous monoculture reduces soybean productivity, but wild soybean persists in the same soils, implying a protective native rhizosphere that could be translated into scalable solutions.
• What they did: The team combined long-term field surveys, metagenomic profiling, and stress-directed cultivation to design SSC, then used a reductionist hydroponic model plus compartmentalized experiments to test microbial effects.
• The result: SSC enhanced disease resistance, reduced phenolic autotoxins, and suggests fungal hyphae can carry bacteria to boost rhizosphere colonization while SSC reprograms root exudates by upregulating flavone and flavonol biosynthesis.

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