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CORRELATION OF FUNGAL MORPHOLOGY AND DEVELOPMENT TO HOST GROWTH IN A GREEN ASH MYCORRHIZA
Author(s) -
DOUDS D. D.,
CHANEY W. R.
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.tb03410.x
Subject(s) - biology , mycorrhiza , shoot , botany , fungus , root system , colonization , arbuscular mycorrhiza , host (biology) , horticulture , symbiosis , ecology , bacteria , genetics
SUMMARY The relationship between the growth of the host, and development and morphology of a vesicular‐arbuscular mycorrhizal fungus was. studied in green ash ( Fraxinus pennsylvanica Marsh.). A yearly cycle with three phases is suggested. Phase I is a period of fast shoot growth, slow root growth, rapid colonization of the root system by the mycorrhizal fungus and greater numbers of fungal arbuscles than vesicles. Phase II is a period of fast root growth and a decline in the percentage of root length infected. Phase III is characterized by senescing leaves, infection percentages increasing to a static level, and greater numbers of vesicles than arbuscles. Mycorrhizal green ash seedlings generally had greater heights, weights and root collar diameters and lower root: shoot ratios than non‐mycorrhizal seedlings.