Nitric oxide: a non traditional regulator of plant growth

Abstract

Nitric oxide (NO) research is a new exciting field in plant biology. However, in part because of its chemical properties (gas, free radical, highly diffusible and reactive), the results obtained to date are more intriguing than just interesting. The question about its cytotoxic or cytoprotective roles has already been stated, and the answer probably depends on accurate measurements of NO concentration in vivo.