
Effects of nitrogen fertilization on secondary metabolite accumulation and antioxidant capacity of Cycolcurya paliurus (Batal.) Iljinskaja leaves
YUE Xiliang, QIN Jian, FU Xiangxiang, SHANG Xulan, FANG Shengzuo
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2020, Vol. 44 ›› Issue (2) : 35-42.
Effects of nitrogen fertilization on secondary metabolite accumulation and antioxidant capacity of Cycolcurya paliurus (Batal.) Iljinskaja leaves
【Objective】 Cyclocarya paliurus (Batal.) Iljinskaja, a native species of China, is cultivated for its medicinal properties,fine timber and ornamental value. To form a theoretical framework of nitrogen fertilization management, this study investigated how variable levels of nitrogen influence the growth, accumulation of secondary metabolites and antioxidant capacity of C. paliurus (Batal.) Iljinskaja seedlings.【Method】The temperature and humidity were fixed in the artificial climate chamber, the stumping seedlings of C. paliurus (Batal.) Iljinskaja with two-year-old seedlings were treated by three nitrogen application levels as N1 (0 g/plant), N2 (3 g/plant) and N3 (6 g/plant). And then, the corresponding growth, total carbon, total nitrogen, secondary metabolites and antioxidant capacity of C. paliurus (Batal.) Iljinskaja leaves were measured and compared across treatments by single factor analysis of variance. 【Result】The seedlings height, ground diameter, biomass and secondary metabolite content of C. paliurus (Batal.) Iljinskaja leaves changed significantly across treatments (P < 0.05). With the increase in nitrogen level, the seedlings height, ground diameter and biomass variation of C. paliurus (Batal.) Iljinskaja were 27.33-39.67 cm, 6.65-9.19 mm, and 2.41-3.87 g, respectively; all the highest values were detected with N1 treatment. The highest content of secondary metabolites was observed in N0 treatment. However, the total nitrogen content in seedlings leaves increased with the nitrogen level, and the C/N ratio significantly decreased. In addition, there was a significant negative correlation between the total nitrogen content and C/N ratio in the leaves of C. paliurus (Batal.) Iljinskaja(P < 0.01), as well as between the IC 50 values of ABTS[2,2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate)] and DPPH(1,1-diphenyl-2-picrylhydrazyl) and the contents of total triterpenoids, total flavonoids, and total polyphenols in the leaves ofC. paliurus (Batal.) Iljinskaja(P < 0.05). With increasing nitrogen level, both the secondary metabolite contents measured and their antioxidant capacities in C. paliurus (Batal.) Iljinskaja leaves showed the tendency N0 > N2 > N1. 【Conclusion】The difference in nitrogen level significantly changed the growth, C/N ratio, secondary metabolites accumulation and antioxidant capacity of C. paliurus (Batal.) Iljinskaja seedlings. The C/N ratio had a significant positive correlation with total polyphenols, and no correlation with total flavonoids, total triterpenoids and antioxidant capacity. Both low and high nitrogen treatments contributed to the accumulation of secondary metabolites and an improvement in the antioxidant capacity ofC. paliurus (Batal.) Iljinskaja seedlings, but inhibited the growth of C. paliurus (Batal.) Iljinskaja seedlings. In conclusion, these results provide the theoretical basis for nitrogen fertilization management through C. paliurus (Batal.) Iljinskaja cultivation.
Cyclocarya paliurus (Batal.) Iljinskaja / nitrogen fertilization / secondary metabolites: antioxidant capacity / growth / total carbon / total nitrogen
[1] |
|
[2] |
|
[3] |
|
[4] |
盛雪飞, 彭燕, 陈健初. 天然抗氧化剂之间的协同作用研究进展[J]. 食品工业科技, 2010,31(7):414-417, 421.
|
[5] |
|
[6] |
马锐, 吴胜本. 中药黄酮类化合物药理作用及作用机制研究进展[J]. 中国药物警戒, 2013,10(5):286-290.
|
[7] |
|
[8] |
|
[9] |
|
[10] |
|
[11] |
尹忠平, 上官新晨, 黎冬明, 等. 超声辅助提取青钱柳叶总三萜化合物研究[J]. 江西农业大学学报, 2010,32(2):373-377.
|
[12] |
苏文华, 张光飞, 李秀华, 等. 植物药材次生代谢产物的积累与环境的关系[J]. 中草药, 2005,36(9):1415-1418.
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
[18] |
刘盈盈, 张珍明, 任春光, 等. 施肥对青钱柳幼苗生长及叶片快速光响应与糖含量的影响[J]. 西南农业学报, 2016,29(10):2361-2365.
|
[19] |
李富民, 谭杰, 聂少平, 等. 青钱柳总黄酮测定方法研究[J]. 江西食品工业, 2006(4):34-37.
|
[20] |
|
[21] |
|
[22] |
|
[23] |
|
[24] |
|
[25] |
|
[26] |
|
[27] |
|
[28] |
|
[29] |
|
[30] |
|
[31] |
|
[32] |
|
[33] |
胡佳栋, 毛歌, 张志伟, 等. 不同施肥处理对党参产量和次生代谢物含量的影响研究[J]. 中国中药杂志, 2017,42(15):2946-2953.
|
[34] |
|
[35] |
|
[36] |
|
[37] |
|
[38] |
|
[39] |
|
[40] |
|
/
〈 |
|
〉 |