MacFarlane, JD/ Kershaw, KA 1980: Physiological-environmental interactions in lichens. XI. Snowcover and nitrogenase activity. - New Phytologist84: 703-710. [RLL List # 107-51 / Rec.# 11980] Keywords: PELTIGERA/ NITROGENASE/ NITROGEN FIXATION/ ECOLOGY/ TEMPERATURE
Abstract: 3 figures. [Low rates of nitrogenase activity in Peltigera canina var. praetextata and P. canina var. rufescens "... result from prolonged darkness rather than an inactivation of the nitrogenase enzyme by low temperature. The subsequent recovery of nitrogenase activity after snowmelt is very largely controlled by the presense of radiant energy with temperature playing a subordinate role."]
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