Luo Mengyuan, Yuan Mingli, Ji Chunhua, Gao Jiakai, Shi Zhaoyong
College of Agriculture, Henan University of Science and Technology, Luoyang, 471023, China.
Henan Engineering Research Center of Human Settlements, Luoyang, 471023, China.
Int Microbiol. 2024 Oct 1. doi: 10.1007/s10123-024-00601-y.
Meeting the demand for energy solely through fossil fuels has posed challenges. To mitigate the risk of energy shortage, woody bioenergy crops as a renewable energy feedstock have been the subject of many researchers. Also, mycorrhizas play an important role in crop productivity and inevitably affect the biomass yield of woody bioenergy crops. Based on a global synthesis of biomass yield of woody bioenergy crops, a framework for identifying and comparing bioenergy crop biomass in response to mycorrhizal type was developed. Our results found that the biomass yield of woody bioenergy crops in descending order was ectomycorrhizas (ECM) crops (10.2 ton DM ha year) > arbuscular mycorrhizas (AM)+ECM crops (8.8 ton DM ha year) > AM crops (8.0 ton DM ha year). In addition, our analysis revealed that the climate had the strongest effect on biomass yield in AM and ECM crops, whereas geography exerted the most significant influence on biomass yield in AM+ECM crops. Furthermore, there were differences in the biomass yield response of different mycorrhizal and plant types to geographic (latitude and elevation) and climatic factors (mean annual temperature (MAT) and mean annual precipitation (MAP)). When cultivating AM crops, we can focus more on temperature conditions-warmer locations, whereas for ECM crops, selecting regions with higher precipitation levels is advantageous. This study revealed the relationship between mycorrhizae and bioenergy crops. It provides data and theoretical support to rationalize differences in different woody bioenergy crops and their different responses to global change and increased production of bioenergy crops.
仅通过化石燃料来满足能源需求带来了诸多挑战。为降低能源短缺风险，木质生物能源作物作为一种可再生能源原料，已成为众多研究人员的研究对象。此外，菌根在作物生产力中发挥着重要作用，且不可避免地会影响木质生物能源作物的生物量产量。基于对木质生物能源作物生物量产量的全球综合研究，开发了一个用于识别和比较不同菌根类型下生物能源作物生物量的框架。我们的研究结果发现，木质生物能源作物的生物量产量从高到低依次为：外生菌根（ECM）作物（10.2吨干物质/公顷·年）＞丛枝菌根（AM）+外生菌根作物（8.8吨干物质/公顷·年）＞丛枝菌根（AM）作物（8.0吨干物质/公顷·年）。此外，我们的分析表明，气候对AM和ECM作物的生物量产量影响最大，而地理因素对AM+ECM作物的生物量产量影响最为显著。此外，不同菌根和植物类型对地理（纬度和海拔）和气候因素（年均温度（MAT）和年均降水量（MAP））的生物量产量响应存在差异。在种植AM作物时，我们可以更多地关注温度条件——选择较温暖的地区，而对于ECM作物，选择降水量较高的地区更有利。本研究揭示了菌根与生物能源作物之间的关系。它为解释不同木质生物能源作物之间的差异及其对全球变化的不同响应以及提高生物能源作物产量提供了数据和理论支持。
