Overexpression of the apple SEP1/2-like gene MdMADS8 promotes floral determinacy and enhances fruit flesh tissue and ripening.

ABSTRACT:

Main conclusion

The over-expression of the apple SEP1/2 like gene (MADS8) supports its role as a key regulator of fleshy fruit patterning and ripening in pome fruit. Fruit flesh patterning in accessory fruits such as apple and strawberry has been associated with the SEPALLATA (SEP) class of genes. Antisense suppression of multiple SEP homologs greatly reduced fruit fleshy tissue growth and ripening in strawberries and apple, suggesting a co-evolution of fleshy fruit growth and its ability to ripen. In the present study, transgenic apple trees were generated that overexpressed the apple SEP1/2-like gene MADS8 (MADS8ox). These lines produced precocious flowers in the second year of growth, but subsequent flower numbers were not increased. Overexpression MdMADS8 in Arabidopsis promote

SUBMITTER: Hoong L 

PROVIDER: S-EPMC11805781 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature