Premium
Mycelial dynamics during interactions between Stropharia caerulea and other cord‐forming, saprotrophic basidiomycetes
Author(s) -
Donnelly Damian P.,
Boddy Lynne
Publication year - 2001
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1046/j.0028-646x.2001.00211.x
Subject(s) - caerulea , mycelium , botany , biology
Summary• Macroscopic mycelial interactions between Stropharia caerulea and four other cord‐forming wood decomposer basidiomycetes ( Phanerochaete velutina , Phallus impudicus , Hypholoma fasciculare and Agrocybe gibberosa ) on nonsterile soil were quantified using nondestructive image analysis. • Interaction development and outcome was species dependent. Once S. caerulea mycelium became fully confronted by nonself mycelia, extension usually ceased and mycelia formed (defensive) aerial ridges and/or (invasive) cords. P. velutina rapidly replaced S. caerulea , but with significantly ( P < 0.05) reduced biomass and mass fractal dimension ( D BM ). S. caerulea regressed, biomass, D BM and surface fractal dimension ( D BS ) became significantly ( P < 0.05) reduced. • S. caerulea produced temporary defensive ridges against P. impudicus , the latter extending through and replacing S. caerulea mycelium, but with significantly ( P ≤ 0.05) reduced biomass. S. caerulea and H. fasciculare deadlocked, the latter producing dense (high D BM ) noninvasive lateral mycelial fans resulting in persistent mycelial fronts. S. caerulea and A. gibberosa initially deadlocked, the latter completely encircling S. caerulea . In response, S. caerulea produced defensive mycelial ridges at the interaction margin, and fans extended over A. gibberosa . • These results are discussed in relation to mycelial foraging strategies, mycelial morphogenesis and determinants of interaction outcome.