Skip to main content
. 2022 Aug 21;23(16):9454. doi: 10.3390/ijms23169454

Figure 6.

Figure 6

A working model of MdAux/IAA2 for regulating apple fruit size. A model role of MdAux/IAA2 in auxin-mediated differences in fruit size between LF and GLF. MdAux/IAA2 negatively regulates apple fruit and cell size; thus, in the absence of auxin, MdAux/IAA2 is enhanced, and the LF apple has a small cell size and fruit size. Bar, 10 mm (A). When the auxin content is high, MdAux/IAA2 may be degraded by TIR1/AFB (a component of E3 ubiquitin ligase), and the negative regulation of MdAux/IAA2 in apple cell size was eliminated, resulting in the larger fruit size of GLF. Bar, 10 mm (B).