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SPATIAL STRUCTURE OF A POPULATION OF TRICHOLOMOPSIS PLATYPHYLLA IN A WOODLAND SITE
Author(s) -
THOMPSON WENDY,
RAYNER A. D. M.
Publication year - 1982
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 - 10.1111/j.1469-8137.1982.tb03366.x
Subject(s) - mycelium , biology , biological dispersal , fungus , woodland , botany , mating type , population , dikaryon , genetics , demography , sociology , gene
SUMMARY Isolates of the mycelial cord‐forming agaric, Tricholomopsis platyphylla , were obtained from an oak stand and their mating and mycelial interactions studied. The fungus was found to have tetrapolar incompatibility and genetically different dikaryons were strongly mutually antagonistic in culture. On the basis of such antagonism, 22 mycelial types, each comprising from one to 15 isolates were identified amongst a random sample of 113 dikaryotic mycelial isolates from an area of 20·8 ha. Isolates belonging to the same mycelial type were frequently found in close proximity in areas from which other types were excluded. However, some were from samples as much as 150 m apart and separated by areas occupied by other mycelial types. The likely origin of this distribution is discussed in relation to the pattern of dispersal, establishment and spread of this saprophytic fungus in a woodland habitat.