Linalool-triggered plant-soil feedback drives defense adaptation in dense maize plantings

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-08-14 DOI:10.1126/science.adv6675

Dongsheng Guo, Zilin Liu, Jos M. Raaijmakers, Yachun Xu, Jinghui Yang, Matthias Erb, Jiabao Zhang, Yong-Guan Zhu, Jianming Xu, Lingfei Hu

{"title":"Linalool-triggered plant-soil feedback drives defense adaptation in dense maize plantings","authors":"Dongsheng Guo, Zilin Liu, Jos M. Raaijmakers, Yachun Xu, Jinghui Yang, Matthias Erb, Jiabao Zhang, Yong-Guan Zhu, Jianming Xu, Lingfei Hu","doi":"10.1126/science.adv6675","DOIUrl":null,"url":null,"abstract":"<div >High planting density boosts crop yields but also heightens pest and pathogen risks. How plants adapt their defenses under these conditions remains unclear. In this study, we reveal that maize enhances its defense in high-density conditions through a plant-soil feedback mechanism triggered by the leaf volatile linalool. Linalool activates jasmonate signaling in neighboring plants and promotes root exudation of benzoxazinoids, especially 2-(2-hydroxy-4,7-dimethoxy-1,4-benzoxazin-3-one)-β-d-glucopyranose (HDMBOA-Glc). These exudates in turn reshape the rhizosphere microbiome composition to favor growth of specific bacterial taxa that trigger broad-spectrum resistance, albeit at the cost of maize growth. This microbiome-driven feedback loop is governed by salicylic acid signaling. Our findings uncover intricate chemical signaling in high-density cropping, which is instrumental for improving soil health and designing sustainable strategies that balance the trade-off between plant growth and defense.</div>","PeriodicalId":21678,"journal":{"name":"Science","volume":"389 6761","pages":""},"PeriodicalIF":45.8000,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science","FirstCategoryId":"103","ListUrlMain":"https://www.science.org/doi/10.1126/science.adv6675","RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

High planting density boosts crop yields but also heightens pest and pathogen risks. How plants adapt their defenses under these conditions remains unclear. In this study, we reveal that maize enhances its defense in high-density conditions through a plant-soil feedback mechanism triggered by the leaf volatile linalool. Linalool activates jasmonate signaling in neighboring plants and promotes root exudation of benzoxazinoids, especially 2-(2-hydroxy-4,7-dimethoxy-1,4-benzoxazin-3-one)-β-d-glucopyranose (HDMBOA-Glc). These exudates in turn reshape the rhizosphere microbiome composition to favor growth of specific bacterial taxa that trigger broad-spectrum resistance, albeit at the cost of maize growth. This microbiome-driven feedback loop is governed by salicylic acid signaling. Our findings uncover intricate chemical signaling in high-density cropping, which is instrumental for improving soil health and designing sustainable strategies that balance the trade-off between plant growth and defense.

Abstract Image

查看原文本刊更多论文

芳樟醇触发的植物-土壤反馈驱动密集玉米种植的防御适应

高种植密度提高了作物产量，但也增加了病虫害风险。在这些条件下，植物是如何调整它们的防御机制的，目前还不清楚。在本研究中，我们揭示了玉米在高密度条件下通过叶片挥发性芳樟醇触发的植物-土壤反馈机制增强其防御能力。芳樟醇激活邻近植物的茉莉酸信号，促进苯并恶嗪类物质的根分泌，特别是2-(2-羟基-4,7-二甲氧基-1,4-苯并恶嗪-3- 1)-β-d-葡萄糖醛酸（HDMBOA-Glc）。这些分泌物反过来重塑根际微生物组的组成，有利于特定细菌分类群的生长，从而引发广谱抗性，尽管以玉米生长为代价。这种微生物组驱动的反馈回路由水杨酸信号控制。我们的研究结果揭示了高密度种植中复杂的化学信号，这对于改善土壤健康和设计平衡植物生长和防御之间的可持续策略至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

期刊介绍： Science is a leading outlet for scientific news, commentary, and cutting-edge research. Through its print and online incarnations, Science reaches an estimated worldwide readership of more than one million. Science’s authorship is global too, and its articles consistently rank among the world's most cited research. Science serves as a forum for discussion of important issues related to the advancement of science by publishing material on which a consensus has been reached as well as including the presentation of minority or conflicting points of view. Accordingly, all articles published in Science—including editorials, news and comment, and book reviews—are signed and reflect the individual views of the authors and not official points of view adopted by AAAS or the institutions with which the authors are affiliated. Science seeks to publish those papers that are most influential in their fields or across fields and that will significantly advance scientific understanding. Selected papers should present novel and broadly important data, syntheses, or concepts. They should merit recognition by the wider scientific community and general public provided by publication in Science, beyond that provided by specialty journals. Science welcomes submissions from all fields of science and from any source. The editors are committed to the prompt evaluation and publication of submitted papers while upholding high standards that support reproducibility of published research. Science is published weekly; selected papers are published online ahead of print.