A cucurbit androecy gene reveals how unisexual flowers develop and dioecy emerges

Adnane Boualem, Christelle Troadec, Céline Camps, Afef Lemhemdi, Halima Morin, Marie Agnes Sari, Rina Fraenkel-Zagouri, Irina Kovalski, Catherine Dogimont, Rafael Perl-Treves, Abdelhafid Bendahmane

Research output: Contribution to journalArticlepeer-review

144 Scopus citations


Understanding the evolution of sex determination in plants requires identifying the mechanisms underlying the transition from monoecious plants, where male and female flowers coexist, to unisexual individuals found in dioecious species.We show that in melon and cucumber, the androecy gene controls female flower development and encodes a limiting enzyme of ethylene biosynthesis, ACS11. ACS11 is expressed in phloem cells connected to flowers programmed to become female, and ACS11 loss-of-function mutants lead to male plants (androecy). CmACS11 represses the expression of the male promoting gene CmWIP1 to control the development and the coexistence of male and female flowers in monoecious species. Because monoecy can lead to dioecy, we show how a combination of alleles of CmACS11 and CmWIP1 can create artificial dioecy.

Original languageEnglish
Pages (from-to)688-691
Number of pages4
Issue number6261
StatePublished - 6 Nov 2015


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