CmACS7

Gene Details:

CmACS7-mediated ethylene production in carpel primordia enhances cell expansion and represses cell division, leading to elongated fruit.
Identified the causal gene as the monoecy sex determination gene CmACS7, and survey of melon germplasms showed strong association between fruit shape and sexual types.
In melon, the fruit shape QTL fs2.2 co-segregates with the Monoecy (separate male and female flowers on the same plant) gene, CmACS7, encoding for 1-aminocyclopropane-1-carboxylic acid synthase, the rate-limiting enzyme in ethylene biosynthesis.
A null allele of CmACS7. We reveal how ethylene produced by CmACS7 controls cell division and elongation, providing mechanistic insights into fruit shape regulation in plants.