A Conserved Mutation in an Ethylene Biosynthesis Enzyme Leads to Andromonoecy in Melons

Boualem, Adnane; Fergany, Mohamed; Fernandez, Ronan; Troadec, Christelle; Martin, Antoine; Morin, Halima; Sari, Marie-Agnès; Collin, Fabrice; Flowers, Jonathan M.; Pitrat, Michel; Purugganan, Michael D.; Dogimont, Catherine; Bendahmane, Abdelhafid

doi:10.1126/science.1159023

Cited by 331 publications

(333 citation statements)

References 20 publications

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“…In contrast to gynodioecy, the underlying genetics of the monoecy pathway are only starting to be understood (Boualem et al, 2008;Martin et al, 2009). However, phenotypic models have shown that unisexual individuals can invade a monoecious population if the investment in one sexual function, particularly the male function, provides increasing fitness returns (e.g.…”

Section: Introductionmentioning

confidence: 99%

An angiosperm-wide analysis of the gynodioecy–dioecy pathway

Dufaÿ¹,

Champelovier²,

Käfer³

et al. 2014

Annals of Botany

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Aims About 6 % of an estimated total of 240 000 species of angiosperms are dioecious. The main precursors of this sexual system are thought to be monoecy and gynodioecy. A previous angiosperm-wide study revealed that many dioecious species have evolved through the monoecy pathway; some case studies and a large body of theoretical research also provide evidence in support of the gynodioecy pathway. If plants have evolved through the gynodioecy pathway, gynodioecious and dioecious species should co-occur in the same genera. However, to date, no large-scale analysis has been conducted to determine the prevalence of the gynodioecy pathway in angiosperms. In this study, this gap in knowledge was addressed by performing an angiosperm-wide survey in order to test for co-occurrence as evidence of the gynodioecy pathway. † Methods Data from different sources were compiled to obtain (to our knowledge) the largest dataset on gynodioecy available, with 275 genera that include at least one gynodioecious species. This dataset was combined with a dioecy dataset from the literature, and a study was made of how often dioecious and gynodioecious species could be found in the same genera using a contingency table framework. † Key Results It was found that, overall, angiosperm genera with both gynodioecious and dioecious species occur more frequently than expected, in agreement with the gynodioecy pathway. Importantly, this trend holds when studying different classes separately (or sub-classes, orders and families), suggesting that the gynodioecy pathway is not restricted to a few taxa but may instead be widespread in angiosperms. † Conclusions This work complements that previously carried out on the monoecy pathway and suggests that gynodioecy is also a common pathway in angiosperms. The results also identify angiosperm families where some (or all) dioecious species may have evolved from gynodioecious precursors. These families could be the targets of future small-scale studies on transitions to dioecy taking phylogeny explicitly into account.

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Section: Introductionmentioning

confidence: 99%

An angiosperm-wide analysis of the gynodioecy–dioecy pathway

Dufaÿ¹,

Champelovier²,

Käfer³

et al. 2014

Annals of Botany

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“…Several investigations have shown that phytohormones are involved in changes of flower type, number and ratio of flowers of different sex types, modifications of flowering time and of other traits related to sex expression (Noguera et al 2005, Papadopoulou et al 2005, Stankovic et al 2005, Yamasaki et al 2005, Little et al 2007, Boualem et al 2008, Ouzounidou et al 2008, Martin et al 2009). Most of these studies were performed in cucumber, the model plant for studying sex expression in Cucurbitaceae.…”

Section: Introductionmentioning

confidence: 99%

The effect of growth regulators on sex expression in melon (Cucumis melo L.)

Girek

Prodanovic

Zdravković

et al. 2013

Crop Breed. Appl. Biotechnol.

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“…Cucurbits are becoming primary models for the study of several biological processes (Boualem et al 2008;Ezura and Fukino 2009;Li et al 2009). The availability of molecular tools, including the whole genome sequence, has significantly increased in the last years, mainly for melon and cucumber (Huang et al 2009;Gonzalez et al 2010), but more recently also for the Cucurbita genus.…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of Spanish Cucurbita pepo landraces: an unexploited resource for summer squash breeding

Formisano

Roig

Esteras

et al. 2011

Genet Resour Crop Evol

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Cucurbita pepo is a world-wide cultivated vegetable of American origin. Most of the widely grown comercial types are known as Summer squashes and belong to the elongated forms of C. pepo ssp. pepo (Cocozelle, Vegetable marrow and Zucchini Groups). These forms were developed in Europe after the arrival of the first american landraces through a process of selection and fixation that led to the loss of genetic diversity. Part of the genetic variability included on the first American cultigens remains in diverse landraces, still cultivated for self-consumption and sale in local markets. Using the first colecction of genomic and EST derived microsatellites that has just become available for the species, we compared the natural variation present in a collection of Spanish landraces with that of a set of commercial varieties and hybrids, representing the current Summer squash market offer. A total of 194 alleles allowed us to distinguish all genotypes, even those closely related. In general, Cocozelle and Vegetable marrow, Groups with considerably long histories, were more variable than the Zucchini Group, of more recent origin. We found significant genetic diversity among landraces. Variation present in the local accessions belonging to the Zucchini Group was larger than that of commercial cultivars. Cluster, principal coordinates and population structure results suggested that the variation of the Spanish landraces has not been extensivelly used in breeding. Commercial Summer squashes can then benefit from this underexploited variability, specially from some landraces that already displayed favourable commercial traits.

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A Conserved Mutation in an Ethylene Biosynthesis Enzyme Leads to Andromonoecy in Melons

Cited by 331 publications

References 20 publications

An angiosperm-wide analysis of the gynodioecy–dioecy pathway

An angiosperm-wide analysis of the gynodioecy–dioecy pathway

The effect of growth regulators on sex expression in melon (Cucumis melo L.)

Genetic diversity of Spanish Cucurbita pepo landraces: an unexploited resource for summer squash breeding

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