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FEATURES OF MYCORRHIZAL INFECTION IN SOME MALAYAN ORCHIDS
Author(s) -
HADLEY G.,
WILLIAMSON B.
Publication year - 1972
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.1469-8137.1972.tb01989.x
Subject(s) - biology , epiphyte , botany , fragmentation (computing) , temperate climate , cortex (anatomy) , mycorrhiza , host (biology) , ecology , symbiosis , bacteria , genetics , neuroscience
S ummary In the roots of most species of terrestrial and epiphytic Malayan orchids examined, mycorrhizal infection was spasmodic and confined to a small proportion of the root cortex cells. Only a few terrestrial species exhibited the pattern of dense infection seen in north temperate orchids. Chlorophyllous tissue in the roots of some terrestrial and epiphytic species was invaded and cytological changes, including fragmentation and disappearance of the chloroplasts, occurred in some instances. Measurements of host cell nuclei indicated that nuclear hypertrophy occurred not only in infected cells but also in many non‐infected cells localized around pockets of infection.