Cytokinins in Rhizopogon roseolus Secretion of N-[9-(beta-d-Ribofuranosyl-9H) Purin-6-Ylcarbamoyl]Threonine into the Culture Medium.
Rhizopogon roseolus excretes the transfer RNA component, N-[9-(beta-d-ribofuranosyl-9H) purin-6-ylcarbamoyl]threonine (Ado-CO-thr) into the culture medium. This compound was proposed to be the archetype of ureidopurines exhibiting cytokinin activity. The amount of Ado-CO-thr isolated from the medium is about one-twentieth the amount of ribosylzeatin that can be isolated.
Laloue
M
M
Department of Biochemistry, McMaster University, Hamilton, Ontario, Canada.
Hall
R H
RH