She Yuting, Gao Xiaofei, Lu Wan-Chun, Yang Zongju, Niu Baixiao, Zhou Yong, Huang Xin-Yuan, Chen Chen
Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding / Zhongshan Biological Breeding Laboratory / Key Laboratory of Plant Functional Genomics of the Ministry of Education, Agricultural College of Yangzhou University, Yangzhou, China.
State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China.
Food Chem. 2025 Apr 15;471:142829. doi: 10.1016/j.foodchem.2025.142829. Epub 2025 Jan 9.
The fortification of aleurone cells represents a promising avenue for enhancing the nutritional quality of cereal. This study investigated dorsal aleurone thickness (DAT) in a rice diversity panel comprising 180 varieties, revealing that DAT of the Geng subspecies is typically greater than that of the Xian subspecies. The minerals and primary metabolites accumulated in the brown grains of ten rice varieties exhibiting distinct DAT were subjected to analysis using spectrometry-based technologies. A positive correlation was identified between essential mineral zinc and DAT, whereas toxic mineral cadmium exhibited a negative correlation. Moreover, our findings revealed that the Xian varieties with high DAT exhibited greater lipid accumulation in the brown seeds than those with thin DAT, while the Geng varieties with high DAT predominantly influenced amino acid accumulation. The findings suggest that the natural variations in aleurone thickness may be exploited for the development of rice varieties that are enriched in nutrients.
糊粉层细胞的强化是提高谷物营养品质的一个有前景的途径。本研究调查了由180个品种组成的水稻多样性群体的背部糊粉层厚度（DAT），发现粳稻亚种的DAT通常大于籼稻亚种。使用基于光谱的技术对十个表现出不同DAT的水稻品种糙米中积累的矿物质和主要代谢物进行了分析。必需矿物质锌与DAT呈正相关，而有毒矿物质镉呈负相关。此外，我们的研究结果表明，DAT高的籼稻品种在棕色种子中的脂质积累比DAT薄的品种更多，而DAT高的粳稻品种主要影响氨基酸积累。这些发现表明，糊粉层厚度的自然变异可用于培育营养丰富的水稻品种。
