title: Nitric oxide counters ethylene effects on ripening fruits.
abstract: Ethylene plays a key role in promoting fruit ripening, so altering its biosynthesis/signaling could be an important means to delay this process. Nitric oxide (NO)-generated signals are now being shown to regulate ethylene pathways. NO signals have been shown to transcriptionally repress the expression of genes involved in ethylene biosynthesis enzymes and post-translationally modify methionine adenosyl transferase (MAT) activity through S-nitrosylation to reduce the availably of methyl groups required to produce ethylene. Additionally, NO cross-talks with plant hormones and other signal molecules and act to orchestrate the suppression of ethylene effects by modulating enzymes/proteins that are generally triggered by ethylene signaling at post-climacteric stage. Thus, medication of endogenous NO production is suggested as a strategy to postpone the climacteric stage of many tropical fruits.
authors.affiliation: Plant Cell Biotechnology Department, Central Food Technological Research Institute, Mysore, India.
authors.forename: Girigowda
authors.initials: G
authors.lastname: Manjunatha
authors.forename: Kapuganti J
authors.initials: KJ
authors.lastname: Gupta
authors.forename: Veeresh
authors.initials: V
authors.lastname: Lokesh
authors.forename: Luis A J
authors.initials: LA
authors.lastname: Mur
authors.forename: Bhagyalakshmi
authors.initials: B
authors.lastname: Neelwarne
mesh_terms: D053898:Biosynthetic Pathways; D005030:Ethylenes / Q000378:metabolism*; D005638:Fruit / Q000254:growth & development* / Q000378:metabolism*; D008954:Models, Biological; D009569:Nitric Oxide / Q000378:metabolism*; D010937:Plant Growth Regulators / Q000378:metabolism
chemical_list: D005030:Ethylenes; D010937:Plant Growth Regulators; D009569:Nitric Oxide; C036216:ethylene