ArticleFrontiers in genetics2026
Plastic film mulching enhances flavonoid accumulation in the roots of
Article in Frontiers in genetics, 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
Background: Methods: This study systematically evaluated the effects of single- and double-layer plastic film mulching relative to an unmulched control on the agronomic traits of Results: Film mulching significantly promoted plant growth, with the double-layer application increasing root biomass by 417% compared to the control. Multi-omic analyses revealed a profound reprogramming of root transcription and metabolism in response to mulching. Transcriptomic shifts indicated the activation of central carbon metabolism, providing the energetic foundation for biomass accretion. Concurrently, metabolomic profiles confirmed a substantial increase in the accumulation of core flavonoids, including baicalin and baicalein. Integrative analysis implicated a regulatory network governed by WRKY and AP2/ERF transcription factors as central to this response. The upregulation of these transcription factors coincided with the synergistic activation of downstream enzyme genes in the flavonoid biosynthesis pathway, culminating in elevated flavonoid content. Conclusion: Our findings demonstrate that plastic film mulching optimizes the rhizosphere to not only activate the primary metabolism requisite for rapid growth but also, acting as an environmental cue, to initiate a WRKY- and AP2/ERF-centric regulatory cascade that systematically enhances root-specific flavonoid biosynthesis. This work provides a molecular rationale for employing this agronomic strategy to achieve high-yield, high-quality cultivation of
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