Glucose susceptibility

Glucose growth condition is typically a form of osmotic stress. When a gene, SFAR4, was knocked out in Arabidopsis, the mutant plant was susceptible to glucose osmotic conditions and had lower germination rates than overexpression transgenic lines and wild-type. Under mannitol osmotic stress conditions, germination rates in mutant plants were not significantly lower than those in overexpression transgenic lines and wild-type. This indicates that the susceptibility to glucose is not due to osmotic stress but due to the mutated gene.