Nitric oxide and hydrogen sulfide share regulatory functions in higher plant events

[摘要] Nitric oxide (NO) and hydrogen sulfide (H2S) are two molecules that share signaling properties in plant andanimal cells. NO and H2S originate two families of derived molecules designated reactive nitrogen and sulfur species (RNSand RSS, respectively). These molecules are responsible for certain protein regulatory processes through posttranslationalmodifications (PTMs), being the most remarkable S-nitrosation and persulfidation, which affect the thiol group ofcysteine residues. NO and H2S can also exert regulatory functions due to their interaction through the iron present inproteins that contain heme groups or iron-sulfur clusters, as reported mainly in animal cells. However, the availableinformation in plant cells is still very limited thus far. In higher plants, NO and H2S are involved in a myriad ofphysiological events from seed germination to fruit ripening, but also the mechanism of response to biotic and abioticstress conditions. This viewpoint manuscript highlights the functional regulatory parallelism of these two moleculeswhich also interact with the metabolism of reactive oxygen species (ROS) in plant cells.

[学科分类] 仪器

[关键词] Ascorbate peroxidase;Hydrogen sulfide;Nitric oxide;Persulfidation;S-nitrosation;Signaling