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EFFECT OF FLOWER BUD DEVELOPMENT IN CHRYSANTHEMUM ON VESICULAR‐ARBUSCULAR MYCORRHIZA FORMATION
Author(s) -
JOHNSON C. R.,
GRAHAM J. H.,
LEONARD R. T.,
MENGE J. A.
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.tb03277.x
Subject(s) - biology , bud , mycorrhiza , chrysanthemum morifolium , arbuscular mycorrhiza , glomus , fungus , botany , inoculation , symbiosis , horticulture , spore , bacteria , genetics
S ummary Roots of single stem Chrysanthemum morifolium plants were inoculated with the vesicular‐arbuscular mycorrhizal (VAM) fungus, Glomus fasciculatus , at several stages of flower bud development. Compared to vegetative control plants, VAM formation was reduced during early stages of flower bud development, but not during later bud expansion. A decrease of reducing sugars and amino acids in root extracts during early bud development coincided with a decrease in root exudation of these compounds. These results suggest that reduction of VAM formation during early flower bud development resulted from a decrease in the availability and net leakage of metabolites necessary to sustain the mycorrhizal fungus during pre‐ and post‐infection.