DOI: 10.1111/ele.13632
论文题名: Soil fungal mycelia have unexpectedly flexible stoichiometric C:N and C:P ratios
作者: Camenzind T. ; Philipp Grenz K. ; Lehmann J. ; Rillig M.C.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期: 2 起始页码: 208
结束页码: 218
语种: 英语
中文关键词: C:N:P ratios
; element homeostasis
; fungal nutrient retranslocation
; microbial carbon sequestration
; mycelial growth
; nutrient limitations
; saprobic fungi
; soil ecological stoichiometry
; soil nutrient cycling
英文关键词: carbon
; nitrogen
; phosphorus
; microbiology
; soil
; Carbon
; Nitrogen
; Phosphorus
; Soil
; Soil Microbiology
英文摘要: Soil ecological stoichiometry provides powerful theories to integrate the complex interplay of element cycling and microbial communities into biogeochemical models. One essential assumption is that microbes maintain stable C:N:P (carbon:nitrogen:phosphorus) ratios independent of resource supply, although such homeostatic regulations have rarely been assessed in individual microorganisms. Here, we report an unexpected high flexibility in C:N and C:P values of saprobic fungi along nutrient supply gradients, overall ranging between 7-126 and 20-1488, respectively, questioning microbial homeostasis. Fungal N:P varied comparatively less due to simultaneous reductions in mycelial N and P contents. As a mechanism, internal recycling processes during mycelial growth and an overall reduced N and P uptake appear more relevant than element storage. The relationships among fungal stoichiometry and growth disappeared in more complex media. These findings affect our interpretation of stoichiometric imbalances among microbes and soils and are highly relevant for developing microbial soil organic carbon and nitrogen models. © 2020 The Authors. Ecology Letters published by John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166787
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Institute of Biology, Freie Universität Berlin, Altensteinstr. 6, Berlin, 14195, Germany; Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, 14195, Germany; Soil and Crop Sciences, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, United States
Recommended Citation:
Camenzind T.,Philipp Grenz K.,Lehmann J.,et al. Soil fungal mycelia have unexpectedly flexible stoichiometric C:N and C:P ratios[J]. Ecology Letters,2021-01-01,24(2)