期刊
OIKOS
卷 2022, 期 8, 页码 -出版社
WILEY
DOI: 10.1111/oik.08992
关键词
mycorrhizal fungi; network assembly; network modules; pathogenic fungi; photosynthetic and root traits; root microorganisms
类别
资金
- National Natural Science Foundation of China [32101281, 31925027, 31901106]
- Basic Research Project of Guizhou Provincial Science and Technology Department Fund of China [QKHJC ZK[2021] 096]
In this study, association networks between plant species and root-associated fungi in a subtropical forest were constructed, revealing strong modularity. The functional traits and phylogeny of both plants and fungi were linked to the modularity of the networks.
Although rhizosphere fungi are essential for plant survival and ecosystem functioning, little is known about the processes that structure plant-fungal association networks. In this study, we constructed association networks between 43 plant species and two groups of root-associated fungi (mycorrhizal and pathogenic fungi; MF and PF, respectively) in a diverse subtropical forest. We then evaluated the modularity of plant-MF and plant-PF networks and linked them to the functional traits and phylogenies of both plants and fungi. We observed strong modularity in both plant-MF and plant-PF networks. Phylogenetically related fungi tended to emerge in the same modules. MF from distinct modules associated with plants with different specific root length and specific root area in plant-MF networks. PF from distinct modules associated with plants with different dark respiration rate and light compensation point in plant-PF networks. Plant affiliation to modules was explained by both plant traits and phylogeny (22% for plant-MF and 37% for plant-PF networks). In contrast, fungal affiliation to modules was explained by fungal phylogeny (16% for plant-MF and 29% for plant-PF networks). Our results elucidate the link between modularity in plant-root fungal networks and the functional traits and phylogeny of the plants and fungi. Our study highlights the importance of traits and phylogeny in governing root fungal community assembly from network perspective.
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