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Yeast two-hybrid analysis of the physical interactions among transcription factors related to pear anthocyanin biosynthesis. DDO: double dropout synthetically defined (SD) medium (i.e., lacking leucine and tryptophan). QDO/X/A: quadruple dropout SD medium containing X-α-Gal and aureobasidin A (AbA) (i.e., SD medium lacking adenine, histidine, leucine, and tryptophan, but supplemented with X-α-Gal and AbA). The empty pGADT7 vector was used as a negative control.
