TY  - JOUR
AU  - Gryndler, Milan
AU  - Beskid, Olena
AU  - Hršelová, Hana
AU  - Bukovská, Petra
AU  - Hujslová, Martina
AU  - Gryndlerová, Hana
AU  - Konvalinková, Tereza
AU  - Schnepf, Andrea
AU  - Sochorová, Lenka
AU  - Jansa, Jan
TI  - Mutabilis in mutabili: Spatiotemporal dynamics of a truffle colony in soil
JO  - Soil biology & biochemistry
VL  - 90
SN  - 0038-0717
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2015-07128
SP  - 62 - 70
PY  - 2015
AB  - The functioning of ectomycorrhizal (ECM) symbioses is closely related to the development of the soil mycelial phase the ECM fungi. The properties and spatiotemporal dynamics of such mycelia in ecosystems is, however, poorly understood. Here we show, using a soil colony of summer truffle (Tuber aestivum) as a model, that an ECM mycelium may only grow and colonize newly-opened soil patches when soil temperatures rise above certain threshold, in this case +10 °C, provided other requirements such as sufficient soil moisture are fulfilled. Extension rates of truffle mycelium in the fields was recorded as >0.3 μm min−1, several-fold greater than that predicted from laboratory cultures. Further, we demonstrated that there was a consistent spatial differentiation in mycelium growth patterns within the fungal colony on a decimeter scale, changing from “diffusion” type of growth at the colony margin to “colony-front” pattern further away from the colony margin. This change was clearly accompanied by shifting structure of soil microbial communities with Terrimonas sp. and another unidentified bacterium correlating with the “colony-front” mycelium growth pattern, and Sphingomonas sp. and Lysobacter brunnescens with the “diffusion” type of mycelium growth. Possible implications of the observed truffle colony differentiation are discussed for processes like fruit-body formation and dispersal of this ECM fungus. Our data indicate that the thallus of T. aestivum has to be considered as a principally variable (“mutabilis”) being in space and time, whose behavior correlates with conditions in ever changing soil environment (“in mutabili”).
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000363075500008
DO  - DOI:10.1016/j.soilbio.2015.07.025
UR  - https://juser.fz-juelich.de/record/278958
ER  -