Nitric oxide: a common antipathogenic factor of plants.
In the present study, nitric oxide synthase/nitric oxide (NOS/NO) status was tested in the host plants infected with fungi, bacteria and virus. In each case cytosolic nitric oxide synthase (Cyt-NOS) of diseased plants was inhibited and inhibition was competitive in nature in respect to l-arginine, the substrate for the enzymic activity. Elevation of host nitric oxide (NO) level before infection using nitric oxide (NO) donor protected disease initiation significantly. The nature of enzyme kinetics and the manner of disease protection by nitric oxide donor (NO-donor) was similar in all the three cases of infection. It was concluded that nitric oxide was a common antipathogenic factor of plants.
Acharya
Rupa
R
Biotechnology Research Laboratory, Postgraduate Department of Botany, Darjeeling Government College, Darjeeling 734 101, India.
Mukhia
Madan
M
Sen
Surjit
S
Acharya
Krishnendu
K
D035801:Amomum / Q000201:enzymology / Q000378:metabolism / Q000382:microbiology; D001937:Brassica / Q000201:enzymology / Q000378:metabolism / Q000382:microbiology; D032082:Citrus aurantiifolia / Q000201:enzymology / Q000378:metabolism / Q000382:microbiology; D003600:Cytosol / Q000201:enzymology / Q000378:metabolism; D009569:Nitric Oxide / Q000378:metabolism*; D019001:Nitric Oxide Synthase / Q000378:metabolism; D010935:Plant Diseases / Q000382:microbiology* / Q000821:virology; D018515:Plant Leaves / Q000201:enzymology / Q000378:metabolism / Q000382:microbiology
D009569:Nitric Oxide; D019001:Nitric Oxide Synthase