Red and blue light differentially regulate carbon metabolism and stem elongation in soybean cultivars with contrasting lodging resistance under shade: A multi-omics perspective

文献类型： 外文期刊

第一作者： Wang, Chang

作者： Wang, Chang;Huang, Shuo;Zhang, Xulang;Shan, Fuxin;Fan, Jinsheng;Lyu, Xiaochen;Dong, Shoukun;Ma, Chunmei;Wang, Chang;Jiang, Baiwen;Fan, Jinsheng;Di, Zhenglei

作者机构：

关键词： Soybean; Blue light; Carbon allocation; Stem elongation; Cell wall; Omics analysis

期刊名称：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY （ 影响因子：3.7； 五年影响因子：5.0 ）

ISSN： 1011-1344

年卷期： 2025 年 271 卷

页码：

收录情况： SCI

摘要： This study employed soybean cultivars 'Henong 60' (lodging-resistant) and 'Heinong 48' (lodging-prone) to investigate the effects of red and blue light on plant height, stem chloroplast ultrastructure, cell wall composition, non-structural carbohydrate (NSC) content, and sugar metabolism-related enzyme activities under 70 % and 100 % shading. Integrated proteomics and metabolomics elucidated carbon allocation pathways during blue light-regulated stem development. Results demonstrated that blue light, compared to red light, significantly inhibited plant height, with stronger inhibition under 100 % shading. Blue light promoted tight stacking of chloroplast grana lamellae, reduced starch granule volume proportion, and redirected carbon allocation from sucrose (-12.42 % to -18.05 %) and starch (-14.55 % to -29.63 %) to cellulose (+3.12 % to +12.47 %) and hemicellulose (+3.67 % to +11.86 %). This shift correlated with blue light-induced upregulation of cellulose synthase, uridine diphosphate glucose (UDP-Glc), and key Calvin cycle enzymes (rbcL, PGK, GAPDH), alongside downregulation of cellulase, sucrose synthase, and cell wall relaxation-related proteins. The lodging-prone cultivar HN48 exhibited greater sensitivity to blue light and higher efficiency in carbon allocation toward cell wall synthesis. This study reveals that blue light enhances stem mechanical strength by remodeling chloroplast carbon metabolism and promoting carbon reallocation from sucrose/starch reserves to cell wall biosynthesis, providing a theoretical basis for optimizing light quality to improve soybean stress resistance.

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