2010
DOI: 10.1093/jxb/erq275
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Is LEAFY a useful marker gene for the flower-inflorescence boundary in the Euphorbia cyathium?

Abstract: The flower-like reproductive structure of Euphorbia s.l. (Euphorbiaceae) is widely believed to have evolved from an inflorescence, and is therefore interpreted as a special type of pseudanthium, termed a cyathium. However, fuzzy morphological boundaries between the inflorescence, individual flowers, and organs have fuelled the suggestion that the cyathium does not merely superficially resemble a flower but could actually share developmental genetic pathways with a conventional flower. To test this hypothesis, … Show more

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Cited by 23 publications
(21 citation statements)
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“…More commonly, it is monoecious with unisexual flowers grouped in highly organised, tight inflorescences called cyathia, which acts as a ‘blossom’ functional unit for pollination (Webster ; Prenner & Rudall ; Prenner et al . ). Each blossom is, in effect, protogynously hermaphroditic: the pistillate flower develops prior to the male flowers (Prenner & Rudall ).…”
Section: Methodsmentioning
confidence: 97%
“…More commonly, it is monoecious with unisexual flowers grouped in highly organised, tight inflorescences called cyathia, which acts as a ‘blossom’ functional unit for pollination (Webster ; Prenner & Rudall ; Prenner et al . ). Each blossom is, in effect, protogynously hermaphroditic: the pistillate flower develops prior to the male flowers (Prenner & Rudall ).…”
Section: Methodsmentioning
confidence: 97%
“…The morphological diversity of members in this genus includes geophytes, herbs, shrubs, understory and canopy trees, and a host of succulent and xerophytic forms (Dorsey et al 2013). Nevertheless, the genus is characterized by the presence of its distinctive morphological synapomorphy, the cyathium, a unique type of inflorescence that looks superficially like a typical dicot flower (Steinmann and Porter , Prenner and Rudall , Prenner et al , Horn et al ). The genus is well known for its succulent species, which resemble cacti.…”
mentioning
confidence: 99%
“…A literatura é escassa no estudo dos pseudantos, sendo a maior parte dos estudos voltados para a tribo Euphorbieae , Narbona et al 2008, Cacho et al. 2010, Prenner et al 2011, Prenner et al 2011b, praticamente não havendo estudos ontogenéticos para os pseudantos das demais subfamílias de Euphorbiaceae.…”
Section: Padrão De Ramificação Das Inflorescênciasunclassified
“…O tipo de pseudanto mais conhecido da família é o ciátio, presente em Euphorbia e que já foi alvo de diversos estudos , Narbona et al 2008, Cacho et al 2010, Prenner et al 2011, entre outros); contudo, destacam que os pseudantos não estão apenas restritos à Euphorbieae, mas também ocorrem em Dalechampia e Pera, ambos localizados anteriormente em Acalyphoideae, mas que agora são considerados filogeneticamente distantes, o que enfatiza a importância do desenvolvimento floral em Euphorbiaceae, visto que os pseudantos surgiram mais de uma vez na família, sendo um caso de evolução convergente.…”
Section: Introductionunclassified
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