Figure 3From: The tep1 gene of Sinorhizobium meliloti coding for a putative transmembrane efflux protein and N-acetyl glucosamine affect nod gene expression and nodulation of alfalfa plantsNodulation efficiency of S. meliloti GR4 (open diamonds) and GR4T1 ( tep1 mutant) (closed squares). Mean values and standard errors (95% confidence) were calculated from three independent experiments.Back to article page