Norris et al. (1) presented data that "unequivocally support the idea of multilayer development of adventitious shoots from chimeral African violet leaf tissue" and concluded therefore that "adventitious shoots are of multicellular origin." Their conclusions, based on the recovery of variegated adventitious shoots regenerated from variegated leaves cultured in vitro, rely on the assumption that...

Background: Nowadays, the optimization of the culture conditions in bioreactors is considered as an approach to produce secondary metabolites such as thebaine. Thebaine is the dominant alkaloid in Iranian poppy that is used as a precursor for the synthesis of analgesic compounds. Objective: Optimization of culture conditions of Papaver bracteatum adventitious roots in bioreactor for the scale...

BACKGROUND AND AIMS An investigation was carried out to determine whether stomatal closure in flooded tomato plants (Solanum lycopersicum) results from decreased leaf water potentials (psi(L)), decreased photosynthetic capacity and attendant increases in internal CO(2) (C(i)) or from losses of root function such as cytokinin and gibberellin export. METHODS Pot-grown plants were flooded when 1...

Adventitious root culture and the development of a bioreactor are methods to obtain biomass plant bioactive compounds in large quantities faster than conventional cultivation. These technologies provide an excellent opportunity produce from plants, especially Gynura procumbens. Previous reports mentioned small-scale could increase G. procumbens adventitious roots. Therefore, larger for is neces...

The purpose of the research was to assess potential effectiveness Azospirillum baldaniorum Sp245 in stimulating induction processes related adventitious root formation. In this short communication, we present preliminary results obtained for first time Leccino olive cultivar (Olea europaea L.). Semi-hardwood cuttings were collected at different sampling times (autumn, winter, and spring) subjec...

Bulky alkylzinc complexes, (Ttz(tBu,Me))ZnMe and (Ttz(tBu,Me))ZnEt, show remarkable stability towards water and both complexes crystallize with one molecule of adventitious water hydrogen bonded to two triazole rings; in contrast the less bulky complex, (Ttz(Ph,Me))ZnEt, reacts with water to yield (Ttz(Ph,Me))(2)Zn.

Different in vitro culture techniques have been used for rapid plant propagation. Pathogenfree plants have been produced using techniques such as seed culture, meristem culture, micropropagation using axillary or adventitious shoot buds, and somatic embryogenesis. This Bulletin discusses the importance of in vitro culture techniques for the production of pathogen-free medicinal plants such as A...