ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2026
Natural allelic variation in BnCLV1 orchestrates root architectural remodelling and yield performance under nitrogen-limited conditions in Brassica napu.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 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
key messageThe findings reveal that BnCLV1 modulates root growth and yield under N-deficient conditions in rapeseed, which may offering a target for breeding varieties with enhanced N use efficiency and improved agricultural sustainability. Nitrogen (N) deficiency is a major limiting factor for rapeseed root growth and yield. Therefore, genetic improvement of rapeseed with N acquisition and utilisation efficiency is a curial strategy for enhancing rapeseed yield and N fertiliser efficiency. Using genome-wide association study (GWAS) and transcriptome analyses, we found that natural variation of leucine-rich repeat receptor-like kinase gene (BnCLV1) regulates N-responsive root system architecture at the seeding stage and yield at the maturity in the natural rapeseed population. N supply inhibited BnCLV1 expression, thereby increasing lateral root number, root surface area, shoot and root biomass, and total root length at the seeding stage. N supply also enhanced yield, pod number and silique length in the maturation stage. GUS assays showed that BnCLV1 signals were negatively regulated in response to N deficiency in primary root, lateral root primordia, leaf veins, and floral primordia tissues. Thus, BnCLV1 modulates lateral root and floral primordia activity, reducing root growth and yield under N deficiency. Overall, these findings reveal that BnCLV1 modulates root growth and yield under N deficiency in rapeseed, providing a target for breeding varieties with enhanced N-use efficiency and improved agricultural sustainability.
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