Allelic variation in LcARF10 toggles an auxin-responsive MYB70-ARF10 repressor switch governing litchi fruit acidity.

Abstract excerpt

Fruit acidity, a key quality trait, is primarily determined by malic acid in many fruit crops. However, the molecular machinery governing its accumulation, particularly in response to hormonal cues like auxin, remains a "black box." Here, we systematically deconstruct the regulatory pathway controlling malic acid in litchi (Litchi chinensis). We first identify the tonoplast-localized transporter LcALMT1 as the...

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