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Liberation of Heterobasidion annosum conidia by airflow
Author(s) -
Möykkynen T.
Publication year - 1997
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1997.tb01082.x
Subject(s) - heterobasidion annosum , conidium , biology , liberation , airflow , botany , picea abies , physics , biochemistry , in vitro , thermodynamics
Summary The effect of speed and humidity of the airflow and the míst sprayed with airflow on the liberation of conidia of Heterobasidion annosum from pure cultures was studied in a small windtunnel. The conidia were liberated more easily in humid than in dry airflow. Liberation was most abundant when mist was added to the airflow. Threshold speed for the liberation of conidia was calculated to vary between 1.8 m/s and 3.9 m/s. According to the results, conidia of H. annosum may be liberated into the air by wind gusts associated with high humidity or mist and thus the conidia may have a role in aerial dispersal, although this is probably small compared with basidiospores.