Cellular processes regulated by NIN in root hairs during rhizobial infection. A, Pie chart showing categories of cellular processes with different numbers of infection genes (up-regulated at 5 dpi with Rm1021) that are down-regulated in nin-1. Significantly enriched Gene Ontology (GO) terms are indicated by red boxes for the different gene categories. B and C, Percentage of expression values in nin-1/the wild type of some representative genes from A. Bars indicate 95% confidence interval. CYCA, Cyclin A; MCM, MINI-CHROMOSOME MAINTENANCE; H3.1, HISTONE 3.1; NPL, NODULE PECTATE LYASE; EXT3, EXTENSIN 3; EXPA4, EXPANSIN A4; GH9C2, Glycosyl Hydrolase Family 9C; RIP1, rhizobium-induced peroxidase 1; CEL3, CELLULASE 3; CBS1, Cystathionine β Synthase-like 1; AATL1, Amino Acid Transporter-Like protein 1; VRC2, Vestitone Reductase Cluster 2; LBO1, LATERAL BRANCHING OXIDOREDUCTASE 1; RPG, Rhizobium-directed Polar Growth; GDSL, GDSL-like lipase; NCR, Nodule Cys-Rich peptide; MtSVP2, Short Vegetative Phase protein 2.