Plant biomass production of wild-type Arabidopsis thaliana (Col-0) in the saline and non-saline soils. The plant biomass production was recorded by measuring the fresh weight 2 weeks after sowing. In the non-saline soils, ACC amendments at 50 and 200 µM exerted no effects but 2,000 µM ACC reduced the plant biomass production (a); ACC amendments at all three levels (50, 200, 2,000 µM) alleviated detrimental effects of salinity on A.thaliana biomass (b). Stars in (a,b) represent significant differences between different ACC treatments (*P < 0.05, **P < 0.01, ***P < 0.001, ANOVA, Least Significant Difference (LSD)). Shown are mean values (n = 4) with SE as errors.