Nitric oxide and hemoglobin plant

Nitric oxide (NO) gas is a small molecule with a high reactivity of the resulting radical character. NO in plant cells can be enzymatically synthesized from L -arginine in a reaction catalysed by the enzyme nitric oxide synthase activity or nitrite in a reaction catalyzed by nitrate reductase . It is also possible via non-enzymatic synthesis of NO . The results of the past years have shown a role in the regulation of signal range of physiological processes ranging from seed germination and ending on aging plants .


Nitric oxide (NO) is an inorganic free radical, that plays an important role in regulation of variety processes in living organisms. Soils are an important source of NO, produced during denitrifica- tion, nitrification and reduction of NO 3 - to NH 4 +. In plants NO production depends on the activity of nitric oxide synthase and/or nitrate reductase as well as non enzymatic generation of NO can be detected. Similarly as in animals, in plant cells NO is widely regarded as a signaling molecule.

The Editorial Board
Andrzej Łukaszyk - przewodniczący, Zofia Bielańska-Osuchowska, Szczepan Biliński, Mieczysław Chorąży, Aleksander Koj, Włodzimierz Korochoda, Leszek Kuźnicki, Aleksandra Stojałowska, Lech Wojtczak

Editorial address:
Katedra i Zakład Histologii i Embriologii Uniwersytetu Medycznego w Poznaniu, ul. Święcickiego 6, 60-781 Poznań, tel. +48 61 8546453, fax. +48 61 8546440, email:

PBK Postępby biologi komórki