网络分析在宿主植物与菌根真菌共生关系研究中的应用

菌根共生体是生物界最广泛的互惠共生体,共生关系多样性是生物多样性的重要组成部分,当前群落尺度菌根共生关系研究才刚刚起步,但发展迅速。网络分析作为生态学研究的重要手段逐渐在菌根共生关系中得以应用,网络分析为群落尺度探究菌根真菌多样性分布规律、共生机制研究提供新观点和途径,对菌根真菌群落结构、生态功能研究具有重要意义。本文总结了网络分析方法在单点式、双点式和多点式菌根共生关系网络研究中的优势和局限性,同时还阐述了零模型选择和构建网络大小对关系网络度量指数的影响,为菌根真菌群落结构、生态功能研究提供新思路,为后续群落尺度菌根共生关系格局研究提供借鉴。

Applications of network analyses in the studies of symbiotic relationship between host plants and mycorrhizal fungi

Mycorrhizal symbiosis is one of the most common reciprocal lifestyles on earth. Symbiosis diversity is also an important part of biodiversity. To date, role of mycorrhizal fungi on plant nutrient acquisition and resistance to unfavorable environment has been studied in data, whereas the study on symbiotic relationship on community scale just start out, but develop rapidly. Network analysis, an important method of ecology research, provides novel insights and approaches for exploring mycorrhizal fungal diversity and symbiosis mechanism, which is of great significance to the study of mycorrhizal fungal community structure and ecological function. This paper summarized advantages and limitations of network analysis in the study of single-point, double-point and multi-point mycorrhizal symbiotic relationship networks. Influence of null model selection and network size on network metric indices was also analyzed. This paper aimed at providing useful information and reference for the subsequent study of community scale mycorrhizal symbiosis relationship pattern.