FIG. 4.
Quantitative real-time RT-PCR analyses for the acdS, nifH, nifA1, and nifA2 genes in M. loti MAFF303099 for roots at 10 DAI. The relative transcript level for each target gene was normalized to the gusA copy number, and the transcript levels for ML-GUS were defined as 1.0. The values are means of three independent experiments, and the error bars indicate standard errors. NT, not tested.