数字农科院2.0

Molecular Mechanisms of Biostimulants in Promoting Tomato Seedling Growth: Linking Chemical Structure to Physiologic Function

文献类型： 外文期刊

作者： Zhou, Qiongqiong;Wu, Shaobo;Xing, Liyuan;Wang, Zhihui;Zhang, Xinying;Zhang, Fen;Weng, Liping;Tang, Jihua;Zhao, Renliang;Wang, Long

作者机构：

关键词： biostimulants;tea polyphenols;chemical structure;transcriptome;metabolome;humic substances

期刊名称： JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

ISSN： 0021-8561

年卷期： 2025 年 73 卷 13 期

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Humic acids (HAs), tea polyphenols (TPs), and fulvic acids (FAs) are bioactive substances known for their antimicrobial, antioxidant, and plant growth-promoting properties. However, the chemical structures and molecular mechanisms underlying their growth-promoting effects remain unclear. Solid-state C-13 nuclear magnetic resonance analysis reveals that FA has the most aromatic and oxygen-containing groups, followed by HA and TP, with a molecular weight ranking of HA > TP > FA. Transcriptomic and metabolomic analyses reveal that these biostimulants unregulated genes related to IAA, C and N metabolism, and pathogen resistance, leading to enhanced synthesis of amino acids, lipids, vitamins, and sugars while improving N and P utilization efficiency. Small molecular weight and aromatic compounds with carboxyl groups and phenolic hydroxyl (especially those with high O/C or (O + H)/C ratios) are crucial for stimulating hormone synthesis and nutrient uptake. These findings provide valuable insights into developing novel fertilizers and artificially regulating humic substances.

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