biostudies-literatureLi LThis work was funded by the Scientific Research Project of Shanxi Province Outstanding Doctoral Work Award Fund (SXBYKY2022022), the Fundamental Research Program of Shanxi Province (202103021223158), and the Scientific and Technological Innovation Program504https://www.ebi.ac.uk/biostudies/studies/S-EPMC11277952biostudies-literatureUnknown10(7)This study aims to understand the influence of nitrogen accumulation, fungal endophyte, yield, nitrogen use efficiency, and grain nutritional quality parameters on the yield of quinoa in some areas of China. The endophytic microbial community in plants plays a crucial role in plant growth, development, and health, especially in quinoa plants under different nitrogen fertilizer levels. The results from the present study indicated that appropriate nitrogen application significantly enhanced the nitrogen accumulation and yield of quinoa grains during maturity, increasing by 34.54-42.18% and 14.59-30.71%, respectively. Concurrently, protein content, amylose, total starch, ash, and fat content also increased, with respective growth rates of 1.15-18.18%, 30.74-42.53%, 6.40-12.40%, 1.94-21.94%, aJournal of fungi (Basel, Switzerland)Effects of Nitrogen Accumulation, Transportation, and Grain Nutritional Quality and Advances in Fungal Endophyte Research in Quinoa (<i>Chenopodium quinoa</i> Willd.) Plants.PMC11277952This work was funded by the Scientific Research Project of Shanxi Province Outstanding Doctoral Work Award Fund (SXBYKY2022022), the Fundamental Research Program of Shanxi Province (202103021223158), and the Scientific and Technological Innovation ProgramYang XJiang ZSun MHuang JZhang YNoor HGao ZLi LDai JWu XRen AfalseEffects of Nitrogen Accumulation, Transportation, and Grain Nutritional Quality and Advances in Fungal Endophyte Research in Quinoa (<i>Chenopodium quinoa</i> Willd.) Plants.This study aims to understand the influence of nitrogen accumulation, fungal endophyte, yield, nitrogen use efficiency, and grain nutritional quality parameters on the yield of quinoa in some areas of China. The endophytic microbial community in plants plays a crucial role in plant growth, development, and health, especially in quinoa plants under different nitrogen fertilizer levels. The results from the present study indicated that appropriate nitrogen application significantly enhanced the nitrogen accumulation and yield of quinoa grains during maturity, increasing by 34.54-42.18% and 14.59-30.71%, respectively. Concurrently, protein content, amylose, total starch, ash, and fat content also increased, with respective growth rates of 1.15-18.18%, 30.74-42.53%, 6.40-12.40%, 1.94-21.94%, a2024-01-01T00:00:00Z2024 Jul2025-08-27T03:10:45.073Z2025-08-27T03:10:45.073ZS-EPMC112779523905738910.3390/jof10070504