Data_Sheet_1_Pathogenic Microbes Increase Plant Dependence on Arbuscular Mycorrhizal Fungi: A Meta-Analysis.CSV

Numerous studies have confirmed that arbuscular mycorrhizal fungi (AMF) can promote plant nitrogen and phosphorus absorption, and prime systemic plant defense to plant pathogenic microbes. Despite that, the information on the interaction between AMF and plant pathogenic microbes is limited, especially the influence of plant pathogenic microbes on the effect of AMF promoting plant growth. In this study, 650 independent paired-wise observations from 136 published papers were collected and used to calculate the different effect of AMF with plant pathogenic microbes (DAPP) in promoting plant growth through meta-analysis. The results showed that AMF had a higher effect size on plant growth with pathogenic microbes comparing to without pathogenic microbes, including the significant effects in shoot and total fresh biomass, and shoot, root, and total dry biomass. The results of the selection models revealed that the most important factor determining the DAPP on plant dry biomass was the harm level of plant pathogenic microbes on the plant dry biomass, which was negatively correlated. Furthermore, the change of AMF root length colonization (RLC) was the sub-important factor, which was positively correlated with the DAPP. Taken together, these results have implications for understanding the potential and application of AMF in agroecosystems.

诸多研究已证实，丛枝菌根真菌（arbuscular mycorrhizal fungi, AMF）可促进植物对氮、磷的吸收，并激活植物针对植物病原微生物的系统性防御反应。尽管已有相关研究基础，但有关AMF与植物病原微生物之间的互作信息仍较为匮乏，尤其是植物病原微生物对AMF促植物生长效应的影响。本研究收集了136篇已发表文献中的650组独立配对观测数据，通过元分析（meta-analysis）计算得到AMF与植物病原微生物共同作用下的植物生长差异效应（DAPP）。结果显示，相较于无病原微生物存在的组别，AMF对有病原微生物侵染的植物生长具有更高的效应量（effect size），具体表现为显著提升了植物地上部鲜生物量、总鲜生物量，以及地上部干生物量、根部干生物量与总干生物量。选择模型分析结果表明，调控DAPP对植物干生物量影响的最核心因素为植物病原微生物对植物干生物量的危害程度，二者呈负相关关系。此外，AMF根长定殖率（root length colonization, RLC）的变化是次核心影响因素，其与DAPP呈正相关关系。综上，本研究结果为理解AMF在农业生态系统中的应用潜力与实践价值提供了重要参考。