ArticleFrontiers in plant science2026
A prebiotic-based biostimulant enhances growth parameters, photosynthetic efficiency, and grain yield in rice (
Article in Frontiers in plant science, 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
Biostimulants constitute an emerging class of biological inputs with potential to boost crop yield in a sustainable manner. However, such products must be tested rigorously to unravel complex and oftentimes discrete modes of action, which is crucial for optimizing product placement and maximizing grower return on investment. This study combined high-throughput phenotyping of seedling establishment, assessment of vegetative and reproductive development, and quantification of photosynthetic efficiency to determine the impact of FoliarBlend, a prebiotic-based biostimulant, on the rice var. Kitaake (Oryza sativa ssp. japonica) from seed germination through seed production. Automated, non-invasive phenotyping revealed that FoliarBlend-treated seedlings displayed consistently elevated projected leaf area, convex hull area, caliper length, and compactness from 5 to 14 days after germination (DAG). The treatment did not introduce additional physiological stress, as evidenced by levels of chlorophyll fluorescence, relative water content, and estimation of chlorotic leaf surface area. Manual phenotyping from 21 to 82 DAG revealed that FoliarBlend application had paradoxical effects on vegetative and reproductive development, decreasing leaf and tiller number while increasing plant height, panicle number, above and belowground biomass, and ultimately grain yield. Furthermore, assessment of photosynthetic parameters highlighted improved Photosystem II (PSII) efficiency and chlorophyll content in treated plants from 49 to 82 DAG, along with an elevation in the quantum yield of non-regulated energy dissipation in PSII. These outcomes indicate that FoliarBlend positively impacts rice seedling establishment, reproductive growth, photosynthetic efficiency, and grain yield under controlled conditions, posing significant implications for enhancing rice production.
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