Some aspects of the leaf nodule symbiosis in Ardisia crispa
Acta botanica neerlandica , Volume 19 - Issue 5 p. 665- 670
Some data on the leaf nodule symbiosis of Ardisia crispa (Thunb.) A.DC. are given. The nodule containing margins of the leaves contain more nitrogen and less ethanolsoluble sugar than the midrib sections. 14C02 photosynthesis experiments show a higher activity in the ethanol-soluble as well as in the insoluble fraction of the margin than in those of the midrib section; the activity of the ethanol-soluble sugars was, however, lower in the margin than in the midrib section. The leaves contain a red pigment of anthocyanic nature. Fixation of atmospheric nitrogen by the symbiont could not be detected.
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