Fig. 8
From: Allelic variation in an expansin, MdEXP-A1, contributes to flesh firmness at harvest in apples
A proposed model for illustrating the effects of the TE-1166 and MdNAC1 on the expression of MdEXP-A1 in regulating apple flesh firmness. The thin and thick lines with arrows indicate low and high expression of MdEXP-A1, respectively. The wavy line indicates the abundance of MdEXP-A1 expression protein. TE-1166 can be recognized and upregulated by the upstream regulatory factor MdNAC1, resulting in super-soft-fleshed hybrids. The dotted arrows indicate that the mechanism of ERF on MdEXP-A1 is unknown