Regulators of cell division in plant tissues

Abstract

The distribution of six cytokinins [zeatin, zeatin riboside, 6-(4-hydroxy-3-methylbutylamino)purine, 6-(3-methylbut-2-enylamino)purine and its riboside, and kinetin] between aqueous buffers (pH 3.0 and 7.0) and several organic solvents was assessed and partition coefficients calculated. Purification of cytokinins from plant extracts by solvent partition methods is discussed.

The Chemical Composition and Biological Properties of Coconut (Cocos nucifera L.) Water

“…trans -zeatin was the first naturally-occurring cytokinin identified from a plant source ( Zea mays ) by Letham [ 24 ]. In 1974, Letham identified trans -zeatin in coconut water [ 79 , 80 ], and a year later, van Stadens and Drewes verified the presence of both trans -zeatin and trans -zeatin riboside in coconut water [ 81 ]. trans -zeatin riboside is the most abundant type of cytokinin found in coconut water ( Table 2 ).…”

Propagation of Pecan (Carya illinoensis): A review

“…Callus can be defined as an amorphous mass of undifferentiated tissue with thin walled parenchyma cells developing from proliferating cells of parent tissue (Dodds and Robert, 1985). Callus formation in tissue culture can be initiated using a small portion of plant tissue due to the use of phytohormones (auxins and cytokinin); it is induced to produce calli (Skoog and Armstrong, 1970;Letham, 1974;Akiyoshi et al, 1983). In micropropagation, callus culture is a very important technique for developing clonal populations, plant regeneration and genetic manipulation in both monocotyledon and dicotyledonous plants (Reinert and Bajaj, 1976).…”