Plants organogenesis

Schiessl K, Kausika S, Southam P, Bush M, Sablowski R. JAGGED controls growth anisotropy between cell size and cell cycle during plant organogenesis. Curr Biol 2012 22(19) 1739 6. 

The mode of action is by inhibiting 5-enolpymvyl-shikimate-3-phosphate synthase. Roundup shuts down the production of the aromatic amino acids phenylalanine, tyrosine, and tryptophane (30). Whereas all these amino acids are essential to the survival of the plant, tryptophane is especially important because it is the progenitor for indole-3-acetic acid, or auxin, which plays an important role in growth and development, and controls cell extension and organogenesis. 

Tian M. Gu Q. Zhu M. (2003) The involvement of hydrogen peroxide and antioxidant enzymes in the process of shoot organogenesis of strawberry callus / / Plant Science. V. 165. P. 701-707. 

Fig. 25.3 The pathways that can be taken in the development of plant tissue and cell cultures starting from a part of a plant (explant). The explant can via direct embryogenesis or oganogenesis form embryos or shoot and roots, respectively, which can be converted into plants. In another path, the explant can form a callus, which can then be used to form a suspension culture. In addition, indirect organogenesis or embryogenesis of the callus can lead to plant formation...

Apparently there exists in plants in general a rather clear-cut division of labor in the growth of the stem the apical meristem is the site of shoot organogenesis (leaf initiation and tissue pattern determination) but its direct contribution to stem growth is small the great majority of cells that actually constitute the mature... 

Pugliesi, C., Megale, P., Cecconi, F., and Baroncelli, S., Organogenesis and embryogenesis in Helianthus tubemsus and in interspecific hybrid Helianthus annuus x Helianthus tuberosus, Plant Cell Tiss. Organ Cult., 33, 187-193, 1993b. 

Espinasse, A., Lay, C., and Volin, J., Effects of growth regulator concentrations and explant size on shoot organogenesis from the callus derived from zygotic embryos on sunflower (Helianthus annuus L.), Plant Cell Tissue Organ Cult., 17, 171-181, 1989. 

Walker, K. A., M. L. Wendeln and E. G. Jaworski. (1979) "Organogenesis in Callus Tissue of Medlcago sativa. The Temporal Separation of Induction Processes from Differentiation Processes." Plant Sci. Lett. 16 23-30. 

Organogenesis In animal cell cultures, the evolution, from dissociated cells, of a structure that shows natural organ form or function or both. In plant tissue culture, a process of differentiation by which plant organs are formed de novo or from pre-existing structures. In developmental biology, this term refers to differentiation of an organ system from stem or precursor cells. 

Sharma, R.K. and Wakhlu, A.K. (2003). Regeneration of Heracleum candicans Wall, plants from callus cultures through organogenesis. Journal of Plant Biochemistry and Biotechnology, 12 71-72. 

Auxins and cytokinins are the most widely studied plant hormones on account of their importance for cell growth and division and, from a practical point of view, for their profound impact on organogenesis when plant cells and tissues are cultured in vitro. Not surprisingly, therefore, both these hormones were included in pioneering studies of hormonal effects on the orientation of MTs in relation to cell growth (e.g. references... 

The hybrid is able to produce more alkaloids than the basic callus, which is an undifferentiated mass of cells. Alkaloid bios5mthesis started just on the level callus and is very intensive in the process of growing of cells and cell tissues to organogenesis. After callus cell specialization and the establishment of plant organs, the biosynthesis of alkaloids is concerned in only some specialized cells and tissues. 

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