Wells J M, Boddy Lynne
School of Pure and Applied Biology, University of Wales, PO Box 915, Cardiff CF1 3TL, UK.
New Phytol. 1995 Feb;129(2):289-297. doi: 10.1111/j.1469-8137.1995.tb04299.x.
Uptake of P phosphorus from soil was investigated at 5-25 °C in mycelial cord systems of Phanerochaete velutina (D.C.: Pers.), Hypholoma fasciculare (Huds.: Fr.) Kummer and Phallus impudiciis (L.) Pers. which extended from 2cm beech (Fagus sylvatica) inocula, and which had initially developed at either 10 or 25 °C. Uptake of phosphorus from soil was opportunistic, being unaffected by the presence of additional wood resource units in mycelial cord systems. The magnitude of phosphorus uptake was dependent on species, temperature during uptake and the temperature at which cord systems developed. Phosphorus translocation to newly colonized baits, determined non-destructively, was characterized by an initial rapid flux to a plateau in all three species. Initial rates of phosphorus translocation (up to 18·46 nmol P d ) generally increased with temperature whilst total translocation was species and temperature dependent. There was evidence that both P. velutina and H. fasciculare displayed temperature acclimation, since phosphorus uptake and translocation at lower temperatures was greater in cord systems which had developed initially at 10° compared with 25 °C. Mycelial extension and wood decay rates also varied with species, initial development temperature and subsequent incubation temperature, but did not correlate with the temperature profiles of phosphorus uptake and translocation. Results are discussed in relation to nutrient acquisition, conservation and cycling in basidiomycete mycelial cord systems.
在5-25°C的温度范围内，研究了绒毛栓菌（Phanerochaete velutina (D.C.: Pers.)）、簇生黄韧伞（Hypholoma fasciculare (Huds.: Fr.) Kummer）和白鬼笔（Phallus impudiciis (L.) Pers.）的菌索系统从2厘米山毛榉（Fagus sylvatica）接种体延伸时对土壤中磷的吸收情况，这些菌索系统最初是在10°C或25°C下形成的。土壤中磷的吸收具有机会性，不受菌索系统中额外木材资源单位的影响。磷的吸收量取决于物种、吸收过程中的温度以及菌索系统形成时的温度。以非破坏性方式测定的向新定殖诱饵的磷转运，其特征是在所有三个物种中，最初都有快速通量至平稳期。磷转运的初始速率（高达18·46 nmol P d）通常随温度升高而增加，而总转运量则取决于物种和温度。有证据表明，绒毛栓菌和簇生黄韧伞都表现出温度适应性，因为与在25°C下最初形成的菌索系统相比，在10°C下最初形成的菌索系统在较低温度下的磷吸收和转运量更大。菌丝体延伸和木材腐烂速率也因物种、初始发育温度和随后的培养温度而异，但与磷吸收和转运的温度曲线无关。结合担子菌菌索系统中的养分获取、保存和循环对结果进行了讨论。
