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NITROGEN METABOLISM IN LICHENS
Author(s) -
MILLBANK J. W.,
KERSHAW K. A.
Publication year - 1969
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.1469-8137.1969.tb06476.x
Subject(s) - thallus , lichen , nitrogen fixation , nitrogen , biology , botany , nostoc , chemistry , cyanobacteria , bacteria , genetics , organic chemistry
S ummary Nitrogen fixation has been demonstrated to occur in the cephalodia of the lichen Peltigera aphthosa which contain a species of Nostoc . The rate of fixation is very high in comparison with the maximum rates for N. muscorum under optimum culture conditions. Virtually all of the nitrogen fixed is secreted to the lichen thallus at a rate equal to the rate of fixation. The possible control mechanisms of this secretion are discussed.