Li Linghong, Jiang Zhijun, Yang Xinhui, Zhang Yulai, Huang Jianxun, Dai Jing, Noor Hafeez, Wu Xiangyun, Ren Aixia, Gao Zhiqiang, Sun Min
College of Agronomy, Shanxi Agricultural University, Taigu 030801, China.
College of Agriculture Engineering, Shanxi Agricultural University, Taigu 030801, China.
J Fungi (Basel). 2024 Jul 21;10(7):504. doi: 10.3390/jof10070504.
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%, and 5.32-22.22%. Our constructed interaction network of bacterial and fungal communities revealed that bacteria outnumbered fungi significantly, and most of them exhibited synergistic interactions. The moderate increase in N150 was beneficial for increasing quinoa yield, achieving nitrogen use efficiency (NUE) of over 20%. The N210 was increased, and both the yield and NUE significantly decreased. This study provides novel insights into the impact of nitrogen fertilizer on quinoa growth and microbial communities, which are crucial for achieving agricultural sustainable development.
本研究旨在了解氮素积累、内生真菌、产量、氮素利用效率和籽粒营养品质参数对中国部分地区藜麦产量的影响。植物内生微生物群落对植物的生长、发育和健康起着至关重要的作用，尤其是在不同氮肥水平下的藜麦植株中。本研究结果表明，适量施氮显著提高了藜麦成熟籽粒的氮素积累和产量，分别提高了34.54 - 42.18%和14.59 - 30.71%。同时，蛋白质含量、直链淀粉、总淀粉、灰分和脂肪含量也有所增加，增长率分别为1.15 - 18.18%、30.74 - 42.53%、6.40 - 12.40%、1.94 - 21.94%和5.32 - 22.22%。我们构建的细菌和真菌群落相互作用网络表明，细菌数量显著多于真菌，且大多数表现出协同相互作用。N150适度增加有利于提高藜麦产量，氮素利用效率（NUE）超过20%。N210增加，产量和NUE均显著下降。本研究为氮肥对藜麦生长和微生物群落的影响提供了新的见解，这对实现农业可持续发展至关重要。
