...Frederick Meins, Jr; Monique Thomas During the development of tobacco plants, cells undergo epigenetic changes that alter their requirement in culture for the cell-division factor cytokinin. Cultured leaf cells alternate between cytokinin-requiring(C – ) and cytokinin-independent (C + ) states...

..., we have utilised a microinduction technique to locally and transiently manipulate the expression in transgenic plants of two genes encoding putative effectors of the cell cycle, a tobacco A-type cyclin and a yeast cdc25. The results show that local expression of these genes leads to modulation...

...Frederick Meins, Jr; Monique Seldran ABSTRACT Cells cultured from explants of tobacco leaf require exogenous cell-division factors such as the cytokinin kinetin for sustained proliferation. When cytokinin-requiring (C − ) cells are cultured on medium containing 1/100 the optimum cytokinin...

... or uidA) , fused to a weak promoter (a truncated (−90 bp) CaMV35S promoter), can be used to identify tissue-specific markers in transgenic tobacco plants. The rationale was that the expression of gusA would be determined primarily by position effect. Quantitative analysis revealed that, of 184 − 90−gus...

... of Biologists 1990 auxin cytokinin IBA kinetin morphogenesis Nicotiana tabacum, oligosaccharin organogenesis TCL thin cell layer tobacco Morphogenesis, the sum of processes that gives form to an organism, includes organization of cells into tissues, tissues into organs, and organs...