Table 1.

Effect of mutation, gene silencing or bacterial genes expression in plant on SA level and plant phenotype.

Organism	Mutation, Transgene or Gene Silencing	Effect on SA Level	Growth Phenotype	Reference
Arabidopsis thaliana	Bacterial NahG expression	Lower level of SA in transgenic plants	Higher biomass, higher seed yield	[106]
Arabidopsis thaliana	Mutation in ICS1	Lower level of SA in the mutant	Higher biomass, higher seed yield	[106]
Arabidopsis thaliana	Mutation in CPR1	A significantly higher level of SA in the mutant	Dwarf phenotype	[119]
Arabidopsis thaliana	Mutation in LSD1	A significantly higher level of SA in the mutant	Lower seed yield	[35]
Arabidopsis thaliana	Mutation in MPK4	A significantly higher level of SA in the mutant	Dwarf phenotype	[120]
Populus tremula x tremuloides	Lower expression of PAD4	Lower level of SA in transgenic lines	Higher stem diameter, higher % of dry weight	[48,121]
Populus tremula x tremuloides	Lower expression of EDS1	Lower level of SA in transgenic lines	Higher CO2 assimilation, changed plant morphology	[38]
Populus tremula x tremuloides	Lower expression of MPK4	Two times higher level of SA in transgenic lines	Lower perimeter of main stem	[107]