期刊
ECOLOGY
卷 97, 期 10, 页码 2815-2823出版社
WILEY
DOI: 10.1002/ecy.1514
关键词
arbuscular mycorrhizal fungi; ectomycorrhizal fungi; functional complementarity; nutrient foraging; root morphology; species coexistence; tree species
类别
资金
- National Science Foundation of USA [NSF IOS-1120482]
- National Science Foundation of China [31370487, 31422010]
- Zhejiang Provincial Funds for Distinguished Young Scientists [LR14C030001]
- Fundamental Research Funds for the Central Universities
The roots of the majority of tree species are associated with either arbuscular mycorrhizal (AM) or ectomycorrhizal (EM) fungi. The absorptive roots of tree species also vary widely in their diameter. The linkages between root thickness, mycorrhiza type and nutrient foraging are poorly understood. We conducted a large root ingrowth experiment in the field to investigate how absorptive roots of varying thickness and their associated fungi (AM vs. EM) exploit different nutrient patches (inorganic and organic) in a common garden. In nutrient-rich patches, thin-root tree species more effectively proliferated absorptive roots than thick-root tree species, whereas thick-root tree species proliferated more mycorrhizal fungal biomass than thin-root tree species. Moreover, nutrient patches enriched with organic materials resulted in greater root and mycorrhizal fungal proliferation compared to those enriched with inorganic nutrients. Irrespective of root morphology, AM tree species had higher root foraging precision than mycorrhizal hyphae foraging precision within organic patches, whereas EM tree species exhibited the opposite. Our findings that roots and mycorrhizal fungi are complementary in foraging within nutrient patches provide new insights into species coexistence and element cycling in terrestrial ecosystems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据