文献类型： 外文期刊

作者： Li, Yitong ¹ ; Li, Run ¹ ; Ren, Xiaoyan ¹ ; Wang, Tian ² ; Yu, Haitao ³ ; Liu, Quan ¹ ;

作者机构： 1.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Herbage Improvement & Grassland Agro, Lanzhou 730020, Peoples R China

2.Pingliang Acad Agr Sci, Pingliang 744000, Peoples R China

3.Gansu Acad Agr Sci, Inst Plant Protect, Lanzhou 730070, Peoples R China

关键词： Nano Fe fertilizer; Flowering process; Trifolium pratense; Volatile compounds; Phytoestrogens

期刊名称：THEORETICAL AND EXPERIMENTAL PLANT PHYSIOLOGY （ 影响因子：2.6； 五年影响因子：2.5 ）

ISSN： 2197-0025

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Nano-Fe, a novel and efficient fertilizer, is usually applied to accelerate the growth and development of plants and trigger the accumulation of secondary metabolites to promote plant resistance. It can also influence flowering progress in diverse ways. However, the mechanism remains poorly understood. In this study, the effect of nano-Fe during flowering of Trifolium pratense was examined. T. pratense was exposed to 0, 15 and 30 g hm(-2) (gram per square hectometer) nano-Fe fertilizer twice at 7-day intervals, respectively. Fe concentration, volatile organic compounds (VOCs) and phytoestrogens were measured. The results showed that nano-Fe fertilizer significantly increased Fe concentrations, with the greatest accumulation in the senescence stage with 15 g hm(-2) Fe treatment. Alkane was highest in relative abundance among the VOCs, accounting for more than 45-81%, and gradually increased in pace with the flowering. Liquid chromatography-mass spectrometry revealed that nano-Fe fertilizer promoted the accumulation of phytoestrogens, and the main secondary metabolites exhibited continuity throughout the flowering process, such as the accumulation of aromatics and alkanes. The concentration of 15 g hm(- 2) was considered a cost-effective agronomic measure to effectively promote reproduction and secondary metabolism in terms of economics. The results revealed that nano-Fe fertilizer promoted plant growth by upregulating phytoestrogens and interfering with the metabolism of volatile products. These findings provide valuable information for understanding the mechanisms by which plants regulate their metabolism in response to nano Fe fertilizers.