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ALLELOPATHIC POTENTIAL OF RASPBERRY FOLIAR LEACHATES ON GROWTH OF ECTOMYCORRHIZAL FUNGI ASSOCIATED WITH BLACK SPRUCE
Author(s) -
Coté JeanFrancois,
Thibault JeanRobert
Publication year - 1988
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1988.tb08801.x
Subject(s) - biology , paxillus involutus , blowing a raspberry , botany , allelopathy , horticulture , rubus , mycorrhiza , germination , symbiosis , genetics , bacteria
In vitro bioassays on seven species of ectomycorrhizal fungi associated with black spruce ( Picea mariana (Mill.) BSP) were tested under allelopathic action of raspberry ( Rubus idaeus L.). Radial growth inhibitions were observed when fungi were confronted with increasing concentrations (0%–0.1%–0.5%–2.5%) of foliar leachates made from May, July, and September material (1986). For the 2.5% treatment, species Paxillus involutus, Laccaria proximo, Laccaria bicolor, Thelephora terrestris , and Cortinarius pseudonapus grew only 6, 8, 32, 42, and 46% of their control, whereas Hebeloma cylindrosporum and Cenococcum geophilum were stimulated. Tree seedlings from raspberry invaded plantation showed mycorrhizal infection rate over 75%, with fine roots mainly colonized by C. geophilum. In combination with efforts of tree improvement and based on the results of this study, it seems important to select a well‐adapted my‐corrhizae, when interference by raspberry is involved.