Multifaceted mechanisms regulating Brassica oleracea growth undershading gradients in an agrivoltaic system: Integrated responses of the soil-plant system and transcriptomic analysis.

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Title:	Multifaceted mechanisms regulating Brassica oleracea growth undershading gradients in an agrivoltaic system: Integrated responses of the soil-plant system and transcriptomic analysis.
Authors:	Chen, Zhuo¹ 727560874@qq.com, Liu, Xiaocui¹ 651078369@qq.com, Ban, Tiantian¹ 1574601087@qq.com, Ma, Chao¹ machao621@126.com
Source:	International Journal of Agricultural & Biological Engineering. Aug2026, Vol. 19 Issue 4, p152-164. 13p.
Subjects:	Photosynthesis, Transcriptomes, Antioxidants, Plant hormones, Attenuation of light, Plant-soil relationships, Cole crops
Abstract:	Agrivoltaic systems represent a sustainable land-use paradigm capable of synergistically generating electricity andproducing agricultural crops on the same piece of land. However, the mechanisms by which photovoltaic shading affects cropgrowth are not fully understood. This study investigated these mechanisms using Brassica oleracea as a model plant at anagrivoltaic base in Guizhou Province, China. Treatments included high shading (HP, 70%-80%), low shading (LP, 20%-30%), and no shading (NP). This study systematically examined the regulatory effects of these shading gradients on soilphysicochemical properties, plant growth physiology, and transcriptomic expression. Results indicated that the NP treatmentyielded the highest B. oleracea biomass, while the LP treatment significantly enhanced the content of quality components suchas sugars and starch while maintaining a relatively high yield. The HP treatment promoted the accumulation of structuralsubstances (cellulose, lignin) and maintained higher soil nutrient levels. Transcriptome analysis revealed that shadingsignificantly altered pathways involved in photosynthesis, starch and sucrose metabolism, and plant hormone signaltransduction. Several key responsive genes were identified, including Bo4g182560 (a chlorophyll a/b-binding protein) andBo3g039200 (involved in jasmonic acid biosynthesis). Furthermore, different shading environments induced distinctantioxidant strategies: the NP zone relied on peroxidase (POD) activity to manage oxidative pressure associated with fullsunlight exposure, whereas the HP zone maintained redox homeostasis by enhancing catalase (CAT) activity. By integratingmulti-omics data spanning soil, plant, and molecular levels, this study partially elucidates the adaptive regulatory network of B.oleracea in the agrivoltaic system, specifically involving photosynthesis, starch and sucrose metabolism, plant hormone signaltransduction, and distinct antioxidant strategies, providing a theoretical basis and genetic resources for system optimization andprecise crop configuration. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

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Abstract:	Agrivoltaic systems represent a sustainable land-use paradigm capable of synergistically generating electricity andproducing agricultural crops on the same piece of land. However, the mechanisms by which photovoltaic shading affects cropgrowth are not fully understood. This study investigated these mechanisms using Brassica oleracea as a model plant at anagrivoltaic base in Guizhou Province, China. Treatments included high shading (HP, 70%-80%), low shading (LP, 20%-30%), and no shading (NP). This study systematically examined the regulatory effects of these shading gradients on soilphysicochemical properties, plant growth physiology, and transcriptomic expression. Results indicated that the NP treatmentyielded the highest B. oleracea biomass, while the LP treatment significantly enhanced the content of quality components suchas sugars and starch while maintaining a relatively high yield. The HP treatment promoted the accumulation of structuralsubstances (cellulose, lignin) and maintained higher soil nutrient levels. Transcriptome analysis revealed that shadingsignificantly altered pathways involved in photosynthesis, starch and sucrose metabolism, and plant hormone signaltransduction. Several key responsive genes were identified, including Bo4g182560 (a chlorophyll a/b-binding protein) andBo3g039200 (involved in jasmonic acid biosynthesis). Furthermore, different shading environments induced distinctantioxidant strategies: the NP zone relied on peroxidase (POD) activity to manage oxidative pressure associated with fullsunlight exposure, whereas the HP zone maintained redox homeostasis by enhancing catalase (CAT) activity. By integratingmulti-omics data spanning soil, plant, and molecular levels, this study partially elucidates the adaptive regulatory network of B.oleracea in the agrivoltaic system, specifically involving photosynthesis, starch and sucrose metabolism, plant hormone signaltransduction, and distinct antioxidant strategies, providing a theoretical basis and genetic resources for system optimization andprecise crop configuration. [ABSTRACT FROM AUTHOR]
ISSN:	19346344
DOI:	10.25165/j.ijabe.20261904.10486