数字农科院2.0

Effect of ARC-BBBE microbial inoculant on main phytohormones in peanut root from seedling to podding stage

文献类型： 外文期刊

作者： Sichen Guan;Jin Mao;Qiaomei Qin;Na Li;Ling Cheng;Xianglong Yang;Qi Zhang;Peiwu Li

作者机构：

关键词： ARC-BBBE;Gibberellin A3;Peanut;Phytohormones

期刊名称： Oil Crop Science

ISSN： 2096-2428

年卷期： 2025 年 10 卷 4 期

页码：

收录情况： CSCD（2025-2026年度） ; ; 农林核心（2024版）

摘要： Phytohormones play a crucial role in regulating peanut growth and development. Our previous studies have demonstrated that the microbial inoculant ARC-BBBE, developed by our research group, effectively promotes peanut growth and enhances yield under both greenhouse and field conditions. Therefore, it is of significant interest to investigate how ARC-BBBE influences the levels and spatial distribution of major phytohormones in peanut roots. Greenhouse pot experiments revealed that ARC-BBBE significantly enhanced peanut growth and root system development. A systematic analysis of the effects of ARC-BBBE on key phytohormones in peanut roots across different growth stages showed that gibberellin A3 (GA3) content varied markedly, with predominant accumulation occurring during the early growth stage, whereas changes in indole-3-acetic acid (IAA) levels were not statistically significant. Specifically, GA3 content in the ARC-BBBE treatment group was 1.27-fold higher than in the control group during the seedling stage. Furthermore, peanut growth parameters were significantly improved following ARC-BBBE application, particularly at the flowering stage, where plant height, above-ground biomass, root length, and root weight in the treated group were 1.24-, 1.17-, 1.13-, and 1.21-fold greater than those in the control, respectively. To elucidate the functional role of phytohormones in ARC-BBBE-mediated growth promotion, we examined the effects of exogenous GA3 and its biosynthesis inhibitor uniconazole (S3307) on both PHNZY-23-3 rhizobial growth and peanut development. Results indicated that supplementation with 1 × 103 mg/L GA3 most effectively promoted peanut growth at the seedling stage, while S3307 application inhibited growth. These findings provide valuable insights into the mechanism by which ARC-BBBE modulates GA3 dynamics to enhance peanut growth, offering a foundation for future research on plant-microbe interactions and phytohormone regulation.

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