Pathways of assimilation and transfer of fixed nitrogen in coralloid roots of cycad-Nostoc symbioses

  title={Pathways of assimilation and transfer of fixed nitrogen in coralloid roots of cycad-Nostoc symbioses},
  author={John Pate and Peter Lindblad and Craig Anthony Atkins},
Freshly detached coralloid roots of several cycad species were found to bleed spontaneously from xylem, permitting identification of products of nitrogen transfer from symbiotic organ to host. Structural features relevant to the export of fixed N were described for Macrozamia riedlei (Fisch. ex Gaud.) Gardn. the principal species studied. Citrulline (Cit), glutamine (Gln) and glutamic acid (Glu), the latter usually in a lesser amount, were the principal translocated solutes in Macrozamia (5 spp… CONTINUE READING
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