What type of study is this?

This is a Experimental Study study.

October 15, 2025

The Interplay of Nitrogen and Boron in Rapeseed (Brassica napus L.): Implications for Nutrient Uptake, Photosynthesis, and Rhizosphere Ecology

Key Points

Boron deficiency negatively affected rapeseed's reproductive growth and photosynthesis under nitrogen-sufficient conditions.
Moderate nitrogen limitation alleviated the negative impacts of boron deficiency, enhancing yield formation.
Core microbiota, including Massilia and Sphingomonas, displayed positive correlations with boron uptake and photosynthetic efficiency.
Balanced nitrogen and boron supply enhanced nutrient uptake, microbial stability, and seed yield in rapeseed.

Abstract

Rapeseed is highly sensitive to boron (B) and nitrogen (N) deficiency, yet their interaction effects on rapeseed remain poorly understood. Here, a factorial pot experiment revealed that under N-sufficient conditions, B deficiency severely impaired reproductive growth, photosynthesis, and yield formation, while also reshaping rhizosphere bacterial communities. However, moderate N limitation alleviated these negative effects. Massilia and Sphingomonas were identified as core microbiota responsive to B availability under N-sufficient conditions, correlating positively with B uptake and photosynthetic N use efficiency (PNUE). Shifts in microbial composition were linked to soil pH and available B, whereas reduced PNUE under B deficiency resulted from disrupted N allocation within the photosynthetic apparatus. Balanced N and B supply improved nutrient uptake, microbial stability, and seed yield, underscoring the importance of integrated nutrient management in sustainable rapeseed production.

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