Qin Mingsen, Li Lei, Miranda Jean-Pascal, Tang Yun, Song Bo, Oosthuizen Maria Kathleen, Wei Wangrong
Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong, China.
Department of Biology, University of York, York, United Kingdom.
Front Plant Sci. 2022 Nov 3;13:1024874. doi: 10.3389/fpls.2022.1024874. eCollection 2022.
Arbuscular mycorrhizal fungi (AMF) play various important roles in promoting plant growth. Numerous environmental and evolutionary factors influence the response of plants to AMF. However, the importance of the individual factors on the effects of AMF on plant biomass is not clearly understood. In this study, a meta-analysis using 1,640 observations from 639 published articles related to the influence of AMF on the plant shoot, root, and total biomass was performed; 13 different experimental setting factors that had an impact on the influence of AMF and their importance were quantitatively synthesized. The meta-analysis showed that AMF had positive effects on the plant shoot, root, and total biomass; moreover, the experimental duration, plant root-to-shoot ratio (R/S), AMF root length colonization, plant family, pot size, soil texture, and the soil pH all influenced the effects of AMF on the shoot, root, and total biomass. In addition, the plant root system and plant functional type had impacts on the effect of AMF on shoot biomass; AMF guild also impacted the effect of AMF on root biomass. Of these factors, the experimental duration, plant R/S, and pot size were the three most important predicting the effects of AMF on the plant shoot, root, and total biomass. This study comprehensively assessed the importance of the different factors that influenced the response of plants to AMF, highlighting that the experimental duration, plant R/S, and pot size should be taken into consideration in pot experiments in studies of the functions of AMF. Multiple unfavorable factors that may obscure or confound the observed functions of AMF should be excluded.
丛枝菌根真菌（AMF）在促进植物生长方面发挥着多种重要作用。众多环境和进化因素影响着植物对AMF的反应。然而，单个因素对AMF对植物生物量影响的重要性尚未得到明确认识。在本研究中，我们进行了一项荟萃分析，使用了来自639篇已发表文章的1640条观测数据，这些文章涉及AMF对植物地上部、根部和总生物量的影响；对影响AMF作用的13个不同实验设置因素及其重要性进行了定量综合分析。荟萃分析表明，AMF对植物地上部、根部和总生物量具有积极影响；此外，实验持续时间、植物根冠比（R/S）、AMF根长定殖率、植物科属、花盆大小、土壤质地和土壤pH值均影响AMF对地上部、根部和总生物量的作用。此外，植物根系和植物功能类型对AMF对地上部生物量的作用有影响；AMF类群也影响AMF对根部生物量的作用。在这些因素中，实验持续时间、植物R/S和花盆大小是预测AMF对植物地上部、根部和总生物量作用的三个最重要因素。本研究全面评估了影响植物对AMF反应的不同因素的重要性，强调在AMF功能研究的盆栽实验中应考虑实验持续时间、植物R/S和花盆大小。应排除可能掩盖或混淆AMF观察到的功能的多种不利因素。
