Wounding stress causes rapid increase in concentration of the naturally occurring 2′,3′-isomers of cyclic guanosine- and cyclic adenosine monophosphate (cGMP and cAMP) in plant tissues

A significant thus far unreported (∼5-fold) up-regulation of 2′,3′-cAMP and 2′,3′-cGMP is observed in wounding stressed Arabidopsis leaves compared to the control samples.114