Substrate / Preda / Genes / Functionb / Epiphytic / Apoplastic
Carbohydrates
Arabinose / A / Psyr_2306,Psyr_2371-3 (araFGH) / T / 1.8 / 2.3
Disaccharide / A / Psyr_0759-0762 / T / 2.8 / 23.5
Fucose / A / Psyr_4488 (fucP) / T / 3.1 / (1.7)
Inositol / D / Psyr_3267-3274 / M / 6.6 / 14.8
Ribose / A / Psyr_2569-2571 / T / 3.4 / 2.2
Ribose / A / Psyr_2874-2877 / T / 2.5 / 2.2
Ribose/xylose/arabinose/galactoside / A / Psyr_3263-3265 / T / 10.6 / 17.2
Sucrose / A / Psyr_0758 (scrB) / M / 2.3 / 20.3
Xylose / A / Psyr_2883 (xylA) / M / 22.3 / 22.3
Xylose / A / Psyr_2884-2886 (xylFGH) / T / 4.4 / 4.8
Organic acids
Acetate / A / Psyr_3756 (actP) / T / 8.2 / 2.6
Citrate / A / Psyr_0198 / T / 6.7 / 3.5
Citrate / A / Psyr_3167 (citA) / T / 1.7 / 1.9
Dicarboxylate / A / Psyr_0898-0900 (dctMPQ) / T / 6.3 / 4.9
D-Galactonate / A / Psyr_4426 / T / 8.4 / 4.1
D-Galactonate / A / Psyr_1990 / T / 1.7 / 5.1
Gluconate / A / Psyr_0463(gntP-2) / T / 4.2 / 1.8
Gluconate / A / Psyr_3338 (gntP-4) / T / (1.2) / 1.8
Glycolate / A / Psyr_3331-3333 (glcDEF) / T / 2.3 / 4.0
4-Hydroxybenzoate / A / Psyr_2124 (pcaK) / T / 1.4 / 1.8
4-Hydroxyphenylacetate / D / Psyr_3501 / T / 2.1 / 1.8
Malate / A / Psyr_3313 (mae1) / T / 2.2 / 1.6
Malate / A / Psyr_1479 / T / 2.4 / (1.2)
Malonate / A / Psyr_0449-0450 (madLM) / T / 10.2 / 21.5
Phosphonate / A / Psyr_2247-2249 / T / 1.8 / 1.4
Tricarboxylate / D / Psyr_3966-3968 (tctABC) / T / 5.2 / 7.3
Table S5. Genes involved in nutrient transport or metabolism that were induced in planta.
aThe source of the prediction for the substrate specificity for the transporters andmetabolic enzymes. A, B728a genome annotation; D, DC3000 genome annotation for gene orthologs showing synteny.
b M, metabolism; T, transport
c Average induction level relative to in the basal medium, calculated using log-transformed data. Boxes highlighted in grey indicate a greater induction in one leaf habitat over the other. Values in parentheses indicate individual genes that were not differentially expressed (q-value >0.01).