Root-exuded benzoxazinoids can alleviate negative plant-soil feedbacks

Plants can suppress the growth of other plants by modifying soil properties. These negative plant-soil feedbacks are often species-specific, suggesting that some plants possess resistance strategies. However, the underlying mechanisms remain largely unknown. Here, we investigated if and how benzoxazinoids, a class of dominant secondary metabolites that are exuded into the soil by maize and other cereals, influence plant-soil feedbacks. We find that three out of five tested crop species suppress maize (Zea mays) performance via negative plant-soil feedbacks relative to the mean across species. This effect is partially alleviated by the capacity of maize plants to produce benzoxazinoids. Soil complementation with purified benzoxazinoids is sufficient to restore the protective effect for benzoxazinoid-deficient mutants. Sterilization and re-inoculation experiments suggest that benzoxazinoid-mediated protection acts via changes in soil biota. Substantial variation of the protective effect b..., , , # Data from: Root-exuded benzoxazinoids can alleviate negative plant-soil feedbacks This repository contains the data for the article published in New Phytologist: Root-exuded benzoxazinoids can alleviate negative plant-soil feedbacks Valentin Gfeller, Lisa Thoenen, Matthias Erb ## Description of the data and file structure All data sheets are named according to the figures in the manuscript. Description of the column names: Fig.1 * \"pre_crop\" and \"Pre_crop_long\" = the name of the precrop * \"trt\" = maize genotype (\"w\" = wild-type maize, \"b\" = bx1 mutant maize) * \"height_harvest\" = shoot height in cm * \"dw_harvest\" = shoot dry weight in g * \"compound\" = name of compound measured * \"Area\" = area under the curve for a given compound * \"conc\" = concentration of a given compound in ng/mL of soil Fig.2 * \"maize_line\" = the name of the maize line (B73 or W22) * \"soil\" = origin of the soil (Field Q-Matte or field in Changins) * \"trt\" = maize genotype (\"w\" = wild-ty...植物可通过改变土壤性状抑制其他植物的生长。这类负向植物-土壤反馈（negative plant-soil feedbacks）通常具有物种特异性，表明部分植物演化出了抗性策略。然而，其背后的核心机制仍未被充分解析。本研究探究了玉米及其他谷类作物根系分泌的一类优势次生代谢物——苯并恶嗪类化合物（benzoxazinoids）是否以及如何调控植物-土壤反馈。我们发现，相较于跨物种平均值，5种受试作物中有3种可通过负向植物-土壤反馈抑制玉米（Zea mays）的生长表现，而玉米合成苯并恶嗪类化合物的能力可部分缓解这一效应。向土壤中添加纯化的苯并恶嗪类化合物，即可恢复苯并恶嗪缺陷型突变体的防护效应。灭菌与重新接种实验表明，苯并恶嗪类介导的防护作用是通过改变土壤生物群落实现的。防护效应存在显著差异…… # 数据来源：根系分泌的苯并恶嗪类化合物可缓解负向植物-土壤反馈 本仓库包含发表于《新植物学家（New Phytologist）》的论文《根系分泌的苯并恶嗪类化合物可缓解负向植物-土壤反馈》的配套数据，作者为Valentin Gfeller、Lisa Thoenen与Matthias Erb。 ## 数据与文件结构说明 所有数据表均按照稿件中的图表编号命名。 ### 列名说明： #### 图1相关列： - "pre_crop"与"Pre_crop_long"：前茬作物名称 - "trt"：玉米基因型（"w"代表野生型玉米，"b"代表bx1突变体玉米） - "height_harvest"：收获期地上部株高，单位为厘米 - "dw_harvest"：收获期地上部干重，单位为克 - "compound"：被测化合物名称 - "Area"：目标化合物的曲线下面积 - "conc"：目标化合物在土壤中的浓度，单位为ng/mL #### 图2相关列： - "maize_line"：玉米自交系名称（B73或W22） - "soil"：土壤来源（Q-Matte试验田或尚齐斯（Changins）试验田） - "trt"：玉米基因型（"w"代表野生型玉米，"b"代表……）