By R. O. Morris, D. A. Regier, E. M. S. MacDonald (auth.), Professor Dr. Jean Guern, Professor Dr. Claude Péaud-Lenoël (eds.)
ISBN-10: 3642680356
ISBN-13: 9783642680359
ISBN-10: 3642680372
ISBN-13: 9783642680373
In a few fresh biology conferences, plant development components were a favourite subject. One could ask if a brand new colloquium dedicated to the metab olism and the actions of cytokinins, thought of on the molecular point, used to be rather worthy and should upload something very important to the former contributions. in fact, the first goal of the organizers, of the French nationwide middle of medical learn, and of the nationwide In stitute of Agronomic study which backed the colloquium used to be much less the version of a lawsuits ebook than the need to assemble a couple of scientists who had made contributions in the direction of fixing prob· lems in cytokinin examine and thereby to supply a chance for fruitful discussions with no regulations within the timetable. certainly this first goal used to be attained. furthermore, very important new fmdings and con clusions have been provided through the individuals that merited book within the shape ofthis publication. it really is past the scope of this foreword to adver tize or perhaps to categorise those new fmdings. we will in simple terms point out some of them. The reader will get pleasure from the contributions of these authors who labored tough to clarify the biosynthetic pathways of ordinary cytokin ins.
Read or Download Metabolism and Molecular Activities of Cytokinins: Proceedings of the International Colloquium of the Centre National de la Recherche Scientifique held at Gif-sur-Yvette (France) 2–6 September 1980 PDF
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Additional resources for Metabolism and Molecular Activities of Cytokinins: Proceedings of the International Colloquium of the Centre National de la Recherche Scientifique held at Gif-sur-Yvette (France) 2–6 September 1980
Example text
N 80 % EtOH filtration Fig. 2. procedures Roots ! Residue EtOH extract ~ grinded in buffer 2 vol. 5N NH3 in 80% EtoH ~ + Aqueous phase + ~ Eluate 2 vol. 35% EtOH Aqueous phase + 35 t + ~ lyophilised Residue Cytokinin fractions The degree of purification was approximately 20-fold when compared to the 20,000 g crude extract. 4 (60 mM potassium phosphate buffer). 3 to 2. 3 nmol/ mg protein/min for Ado and i 6 Ado, respectively. Inosine was not a substrate for wheat germ adenosine kinase. The cytokinin ribonucleotide formed was characterized by paper electrophoresis to be 5'-monophosphate. 4 Cytokinin Ribonucleotide from Cytokinin Base Doree and Guern (1973) studied short-term metabolism of some exogenous cytokinins in Acer pseudopliltanus cells and observed that one of the major metabolites formed from cytokinin base was the corresponding nucleotide. Fuell 1 1 Introduction Cytokinins are one of the potent classes of naturally occurring plant growth "hormones". They occur in plants both as bases adjacent to the anticodon triplet in specific tRNA species and as free bases, ribonucleosides and ribonucleotides. Earlier work (Burrows, 1976) had identified the "non-tRNA" form of the cytokinin as that active in eliciting the many phenotypic responses observed by plant phYSiologists in plants and detached plant parts in response to exogenous application of kinetin. Metabolism and Molecular Activities of Cytokinins: Proceedings of the International Colloquium of the Centre National de la Recherche Scientifique held at Gif-sur-Yvette (France) 2–6 September 1980 by R. O. Morris, D. A. Regier, E. M. S. MacDonald (auth.), Professor Dr. Jean Guern, Professor Dr. Claude Péaud-Lenoël (eds.)
by Edward
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