Passifloraceae

Feuillet, Christian; MacDougal, John M.

doi:10.1007/978-3-540-32219-1_35

Cited by 40 publications

(37 citation statements)

References 16 publications

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“…Many species of Passifloraceae have tendrils located in the leaf axils (Feuillet & Macdougal, ). These tendrils may grow in association with vegetative branches and flowers, or be directly associated with inflorescences (Fig.…”

Section: Tendril Origin In Passifloraceaementioning

confidence: 99%

“…These structures are derived from different organs, representing a great model for comparative studies on molecular regulation. For instance, tendrils are considered to be modified reproductive structures in grapes ( Vitis vinifera , Vitaceae; Boss & Thomas, ) and Passifloraceae (Feuillet & Macdougal, ). On the other hand, tendrils are modified leaflets in peas ( Pisum sativum , Fabaceae; Hofer et al ., ) and various members of tribe Bignonieae (Bignoniaceae; Sousa‐Baena et al ., ,b), whereas they represent modified lateral shoots in Cucurbitaceae (Mizuno et al ., ; Wang et al ., ).…”

Section: Introductionmentioning

confidence: 99%

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The molecular control of tendril development in angiosperms

et al. 2018

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The climbing habit has evolved multiple times during the evolutionary history of angiosperms. Plants evolved various strategies for climbing, such as twining stems, tendrils and hooks. Tendrils are threadlike organs with the ability to twine around other structures through helical growth; they may be derived from a variety of structures, such as branches, leaflets and inflorescences. The genetic capacity to grow as a tendrilled climber existed in some of the earliest land plants; however, the underlying molecular basis of tendril development has been studied in only a few taxa. Here, we summarize what is known about the molecular basis of tendril development in model and candidate model species from key tendrilled families, that is, Fabaceae, Vitaceae, Cucurbitaceae, Passifloraceae and Bignoniaceae. Studies on tendril molecular genetics and development show the molecular basis of tendril formation and ontogenesis is diverse, even when tendrils have the same ontogenetic origin, for example leaflet-derived tendrils in Fabaceae and Bignoniaceae. Interestingly, all tendrils perform helical growth during contact-induced coiling, indicating that such ability is not correlated with their ontogenetic origin or phylogenetic history. Whether the same genetic networks are involved during helical growth in diverse tendrils still remains to be investigated.

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Section: Tendril Origin In Passifloraceaementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The molecular control of tendril development in angiosperms

et al. 2018

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“…Passifl ora L. é o maior dos gêneros de Passifl oraceae, com cerca de 530 espécies (Feuillet & MacDougal 2007). No Brasil, Cervi (2006) refere um total de, aproximadamente, 140 espécies validamente descritas para o gênero.…”

Section: Introductionunclassified

Tipos de aberturas dos grãos de pólen de espécies de Passiflora L. (Passifloraceae)

Dettke

Santos

2009

Acta Bot. Bras.

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RESUMO -(Tipos de aberturas dos grãos de pólen de espécies de Passifl ora L. (Passifl oraceae)). Estudos palinológicos revelam uma ampla variação de formas, número e tipos de aberturas nos grãos de pólen em Passifl ora. Este estudo tem como objetivo caracterizar as aberturas polínicas de onze espécies do gênero ocorrentes no Rio Grande do Sul e duas em Santa Catarina (Brasil), pertencentes a três dos quatro subgêneros atualmente reconhecidos: Astrophea, Decaloba e Passifl ora. Foram utilizadas várias técnicas de microscopia óptica de campo claro e microscopia eletrônica de varredura. Passifl ora haematostigma (Astrophea) possui grãos de pólen 6-colporados, com três endoaberturas lalongadas. Passifl ora alata, P. amethystina, P. caerulea e P. edulis (Passifl ora) apresentam pólen 6-colpados, com fusões das ectoaberturas, aos pares, na região do apocolpo. Passifl ora actinia, P. elegans e P. tenuifi la (Passifl ora) apresentam grãos de pólen com 6 a 12 colpos, também fusionados aos pares. Passifl ora misera, P. morifolia, P. suberosa e P. truncata (Decaloba) apresentam grãos de pólen 6-colporados operculados, com diferenças no tamanho das endoaberturas e largura do opérculo. Passifl ora capsularis (Decaloba) apresenta pólen 12-colporado. São discutidos os principais termos relacionados às descrições polínicas do grupo e indicados os termos mais apropriados e sinônimos. Palavras-chave: Passifl ora, tipos aperturais, pseudopérculo, opérculo, palinologia ABSTRACT -(Aperture types of pollen grains of Passifl ora L. species (Passifl oraceae)). Palynological studies reveal a wide variation in shape, number and types of apertures in Passifl ora pollen grains. This study aimed to characterize pollen grain apertures of eleven species of Passifl ora from Rio Grande do Sul state and two species from Santa Catarina state (Brazil), belonging to three of the four subgenera now recognized: Astrophea, Decaloba and Passifl ora. Several techniques of light and scanning electron microscopy were employed. Passifl ora haematostigma (Astrophea) has 6-colporate pollen grains with three lalongate endoapertures. Passifl ora alata, P. amethystina, P. caerulea and P. edulis (Passifl ora) have 6-colpate pollen grains, with fusion of ectoapertures pairs in the apocolpium. Passifl ora actinia, P. elegans and P. tenuifi la (Passifl ora) have pollen grains with 6 to 12 colpi, also fused in pairs. Passifl ora misera, P. morifolia, P. suberosa and P. truncata (Decaloba) have 6-colporate operculate pollen grains, with differences in endoaperture size and operculum width. Passifl ora capsularis (Decaloba) has 12-colporate pollen. The main palynological terms and synonyms in the literature are discussed.

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“…400 accepted species and a pantropical distribution (Feuillet and MacDougal 2007). The genus is currently divided into five subgenera: Passiflora subg. Astrophea (DC) Mast., P. subg. Deidamioides (Harms) Killip, P. subg. Decaloba (DC.)…”

Section: Introductionmentioning

confidence: 99%

Taxonomy, palynology and distribution notes of seven species of Passiflora L. (Passifloraceae s.s.) newly recorded from Brazil

Mezzonato-Pires,

Milward-de-Azevedo,

Mendonça

et al. 2018

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Passiflora subgenus Astrophea is one of the five recognised subgenera of Passiflora. Brazil presents ca. 26 species of this subgenus with the majority distributed in the Amazon Basin. During the ongoing taxonomic revision of the Brazilian species of subg. Astrophea, seven species previously unknown for the country were recorded: Passiflora amoena, P. fuchsiiflora, P. jussieui, P. ovata, P. plumosa, P. quelchii, and P. tessmannii. The new records expand the species distribution ranges, especially for P. plumosa, which was exclusively known from its type locality and P. quelchii, which was known only for southeastern Guyana. The authors provide taxonomic and palynological descriptions, distribution maps and illustrations for these species, in the hope that the knowledge and understanding of Brazilian Passifloraceae s.s. will be improved.

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Passifloraceae

Cited by 40 publications

References 16 publications

The molecular control of tendril development in angiosperms

The molecular control of tendril development in angiosperms

Tipos de aberturas dos grãos de pólen de espécies de Passiflora L. (Passifloraceae)

Taxonomy, palynology and distribution notes of seven species of Passiflora L. (Passifloraceae s.s.) newly recorded from Brazil

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