Fig. 7. BLR interacts directly with class 1 KNOX proteins. Yeast two-hybrid assay demonstrating interaction between BLR and KNOX proteins inferred through selective growth on medium lacking leucine, tryptophan and histidine (-leu -;trp -;his) compared with medium lacking leucine and tryptophan (-;leu, -;trp). All yeast strains grow on -;leu -;trp medium. Growth on -;leu, -;trp, -;his medium is detected for strains carrying TA-BLR and DB-BP or DB-STM but not for strains carrying TABLR and DB-KNAT4 or the DB vector. Growth of a strain carrying TA-BEL1 and DB-BP is shown as a positive control.

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