ArticleFrontiers in microbiology2026
Synergistic effects of grafting and companion cropping reshape the root endophytic microbiome network to regulate yield and fruit quality in continuously monocropped watermelon.
Article in Frontiers in microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Grafting and companion cropping alleviate continuous watermelon monocropping obstacles, yet their synergistic regulatory regulatory effects on root endophytic microbiota and fruit traits remain unclear. Methods: A 2 × 5 split-plot field trial was conducted in a 7-year continuous watermelon monocropping system, comprising grafted and non-grafted plants with five companion cropping treatments designated CK, T1, T2, T3, and T4. High-throughput sequencing, PCoA, PERMANOVA, RDA, microbial co-occurrence network analysis and yield-quality assays were applied for systematic characterization. Results: Grafting significantly increased total bacterial OTUs, all bacterial richness and diversity indices, fungal OTU numbers and fungal richness, yet reduced fungal community diversity. PERMANOVA verified that grafting, companion cropping and their interaction significantly reshaped bacterial and fungal community structures ( Discussion: Combined grafting and companion cropping optimize watermelon yield and nutritional quality by restructuring the root endophytic microbial communities, offering a feasible cultivation strategy for sustainable continuous watermelon production.
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