Mineral nutrition and plant morphogenesis

In vitro regeneration and genetic fidelity of Tigridia pavonia (L.f.) DC.

“…MS medium differs significantly from N 6 medium with respect to the content of ammonium and nitrate ions, and also to a lesser degree with the content of phosphate ions. Given that both elements (nitrogen and phosphorus) are consumed quickly by the explants cultivated in vitro, they can be limiting factors in tissue culture growth (Ramage and Williams, 2002). Also, it has been observed that high ammonium levels have a negative effect on growth and morphogenesis.…”

Efeitos de diferentes concentrações de nitrogênio no crescimento de Aechmea blanchetiana (Baker) L.B. Sm. cultivada in vitro

“…O uso mais freqüente de ferramentas da genética molecular para o entendimento da inter-relação entre os genes durante o desenvolvimento das plantas está contribuindo com o avanço rápido do conhecimento desses processos (Ramage & Williams 2002).…”

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“…It has a neutral effect on pH and is a source of soluble nitrogen and potassium. It has an important function in the osmotic regulation of the cell, controlling the influx of other compounds 26 . As a consequence of potassium uptake, nitrate use increases, promoting growth.…”

“…Potassium nitrate was found to be important in the germination of plum (Prunus domestica L.) 27 while some banana has a preference for NH 4 NO 3 28 . MS medium has a high concentration of NH 4 NO 3 , which is a source of NH Nitrate-N induces the activity of nitrate reductase enzyme that reduces nitrate to ammonium, which is then incorporated into proteins 29,30 . Additionally, the form of inorganic nitrogen and ammonium to nitrate ratio has been reported to greatly affect the growth and differentiation of cultured tissues 31,32 .…”