MilliporeSigma

Nitric oxide counters ethylene effects on ripening fruits.

Plant signaling & behavior (2012-04-14)
Girigowda Manjunatha, Kapuganti J Gupta, Veeresh Lokesh, Luis A J Mur, Bhagyalakshmi Neelwarne
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.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Ethylene, ≥99.5%
Sigma-Aldrich
Ethylene, 99.99%