Vanillin, a Newly Discovered Autotoxic Substance in Long-Term Potato Continuous Cropping Soil, Inhibits Plant Growth by Decreasing the Root Auxin Content and Reducing Adventitious Root Numbers

文献类型： 外文期刊

第一作者： Ma, Haiyan

作者： Ma, Haiyan;Li, Junji;Ren, Zhitong;Yang, Hongkun;Fang, Xiaoting;Shahzad, Muhammad Amir;Zhang, Kaiqin;Wang, Qiang;Zheng, Shunlin;Ma, Haiyan;Li, Junji;Ren, Zhitong;Yang, Hongkun;Fang, Xiaoting;Shahzad, Muhammad Amir;Zhang, Kaiqin;Wang, Qiang;Zheng, Shunlin;Luo, Aihua;Lv, Heping;Qu, Huijuan;Zheng, Shunlin

作者机构：

关键词： potato; continuous cropping obstacle; adventitiousroot; autotoxicity; vanillin; indole-3-aceticacid

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）

ISSN： 0021-8561

年卷期： 2023 年 71 卷 45 期

页码：

收录情况： SCI

摘要： Phenolic acids are known to reduce root biomass and hinder plant development, but it is unclear how they affect potato root traits. Over a 10 year field experiment, we found a negative correlation between the potato yield and continuous cropping years. The substantial reduction in adventitious root (AR) numbers was found to be primarily inhibited by soil vanillin accumulation. The study also found that vanillin had a more pronounced inhibitory effect on the potato yield than commonly reported ferulic acid and p-hydroxybenzoic acid. The decrease in yield was attributed to the reduction of root indole-3-acetic acid (IAA) content, which impeded the formation of AR. Exogenous IAA was found to increase the root IAA content and stimulate AR formation under vanillin stress, ultimately leading to an increase in the potato yield. This study provides valuable insights into potential strategies for the degradation of autotoxic substances and breeding of potato cultivars with enhanced resistance to autotoxicity.

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