The cell recognition model in chlorolichens involving a fungal lectin binding to an algal ligand can be extended to cyanolichens

Plant Biology
M VivasC Vicente

Abstract

Leptogium corniculatum, a cyanolichen containing Nostoc as photobiont, produces and secretes arginase to culture medium containing arginine. This secreted arginase was pre-purified by affinity chromatography on beads of activated agarose to which a polygalactosylated urease, purified from Evernia prunastri, was attached. Arginase was eluted from the beads with 50 mm alpha-d-galactose. The eluted arginase binds preferentially to the cell surface of Nostoc isolated from this lichen thallus, although it is also able to bind, to some extent, to the cell surface of the chlorobiont isolated from E. prunastri. Previous studies in chlorolichens have shown that a fungal lectin that develops subsidiary arginase activity can be a factor in recognition of compatible algal cells through binding to a polygalactosylated urease, which acts as a lectin ligand in the algal cell wall. Our experiments demonstrate that this model can now be extended to cyanolichens.

References

Aug 15, 1987·Analytical Biochemistry·M Gottlieb, M Chavko
Feb 26, 1982·Biochemical and Biophysical Research Communications·M E Legaz, C Vicente
Dec 15, 2004·Plant Physiology and Biochemistry : PPB·Blanca FontaniellaMaría-Estrella Legaz
Feb 28, 2007·The Journal of General and Applied Microbiology·Shin-ichi Miura, Akira Yokota
Jun 2, 1978·Science·V AhmadjianL A Russell
Sep 1, 2000·The New Phytologist·A N RaiB Bergman

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Citations

Dec 25, 2013·Ecotoxicology and Environmental Safety·T L de VasconcelosM E Legaz
Dec 1, 2011·Microbiology and Molecular Biology Reviews : MMBR·P Frey-KlettA Sarniguet
Jan 8, 2014·Canadian Journal of Microbiology·Sarangi N P AthukoralaMichele D Piercey-Normore
Dec 9, 2014·Canadian Journal of Microbiology·Sarangi N P Athukorala, Michele D Piercey-Normore

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