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. 2022 Dec 18;113(2):308–326. doi: 10.1111/tpj.16048

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© 2022 The Authors. The Plant Journal published by Society for Experimental Biology and John Wiley & Sons Ltd.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Defense gene expression in near‐isogenic lines of sorghum that differ in the ARG2 locus.

(a) Schematics showing the steps used to generate the NILs. The NILs carry the recessive (susceptible) arg2 allele in TAM428 (arg2/arg2, rr) and dominant (resistance) ARG2 allele (ARG2/ARG2, RR).

(b) Disease symptom and fungal growth in resistant NILs (RR) and susceptible NILs (rr).

(c) Expression of three defense response genes in the resistant NILs (RR) and the susceptible NILs (rr) after pathogen or mock inoculation. FOMT, flavon‐O methyltransferase; CHS8, chalcone synthase 08; PR10, pathogenesis related gene 10; hpi, hours post inoculation. Fungal growth on the inoculated tissue was examined using a confocal microscope at 6 days post inoculation (dpi). WGA‐AF488 stains fungal hyphae green and propidium iodide stains dead host cell red. The image was taken at 10 dpi in the detached‐leaf disease assay.