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STUDIES OF THE LICHEN SYMBIOSIS
Author(s) -
SCOTT G. D.
Publication year - 1960
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.1469-8137.1960.tb06232.x
Subject(s) - lichen , symbiosis , biology , ecology , botany , bacteria , paleontology
S ummary Culture studies and field observations on Peltigera praetextata (Flk.) Vain, provide evidence of the existence of a delicate state of balance between the co‐symbionts of this lichen. Excessive supply of nutrients to discs of the lichen results in the outgrowth of the phycobiont and consequent destruction of the symbiotic relationship. The conjoint effect of excessive moisture and light is shown to bring about similar symbiotic breakdown. It is suggested that these three factors acting together as a growth‐regulating system are chiefly responsible for the success of the lichen symbiosis.