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

Dettke, Greta Aline; Santos, Rinaldo Pires dos

doi:10.1590/s0102-33062009000400021

Cited by 20 publications

(42 citation statements)

References 12 publications

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“…Passiflora alata was already described as having 6-colpate pollen grains (Melhem et al 2003;Dettke & Santos 2009) or as being 6-syncolpate (Araújo & Santos 2004;Evaldt et al 2011), similarly to the pollen grain described in the current paper. Presting (1965) considered P. amethystina to be 6-colporoidate; Spirlet (1965), found it to be 6-geminicolpate; Dettke & Santos (2009), classified it as 6-colpate; and Evaldt et al (2011), as 6-syncolpate; as it was described in the present paper.…”

Section: Discussionsupporting

confidence: 77%

“…It takes into account the size, shape and ornamental pattern of sexine. The definitions by Presting (1965) and Dettke & Santos (2009) were applied to apertures description.…”

Section: Methodsmentioning

confidence: 99%

“…Spirlet (1965) used pollen data to help taxonomic classification. Later studies such as those by García et al (2002), Araújo & Santos (2004), Milward-de-Azevedo et al (20042010), Barrios et al (2005), Dettke & Santos (2009), Evaldt et al (2011), Tangarife et al (2011), Mezzonato-Pires (2013 and Verdasca et al (2013) also helped improving the palynological knowledge on the Passifloraceae s.s. family.…”

mentioning

confidence: 99%

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Pollen morphology of selected species of Passiflora L. (Passifloraceae) from the Atlantic Forest

2015

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Pollen grains from twelve species of the Passifloraceae family from the Brazilian Atlantic Forest were analyzed: Passiflora subg. Astrophea (1sp.), P. subg. Decaloba (1sp.) and P. subg. Passiflora (10spp.). The current study aims to acquire additional information and feature the pollen morphology of the herein studied species to help setting a more precise taxa delimitation. Acetolyzed pollen grains were measured, described and illustrated using light and scanning electron microscopy. The pollen grains were medium or large sized, oblate spheroidal, suboblate, prolate spheroidal and subprolate; 4-colpate (P. kermesina), 6-12-pantocolporate (P. mediterranea), 6-colpate (P. mucronata), 6-colporate (P. pentagona), 12-colporate (P. misera) or 6-syncolpate (in most species). The presence of reticulate sexine, pseudopercula, pontopercula and/or opercula was observed. The endoaperture was just found in P. pentagona and P. misera. It was concluded that pollen morphology is an important source of taxonomic features useful for distinguishing species and characterizing the three subgenera. The current study provides additional information that, along with other previously published studies, will enable a better understanding of phylogenetic relations among these strains.

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Section: Discussionsupporting

confidence: 77%

“…It takes into account the size, shape and ornamental pattern of sexine. The definitions by Presting (1965) and Dettke & Santos (2009) were applied to apertures description.…”

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Pollen morphology of selected species of Passiflora L. (Passifloraceae) from the Atlantic Forest

2015

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“…An example of this is the classification of Passiflora edulis pollen grains in relation to the type of aperture, having been cited as being 6-colporoidate (Presting 1965), 3-zonoporate (Desai & Thorne 1974), geminicolpate (Spirlet 1965), 6-colpate (Dettke & Santos 2009) and 6-syncolpate (Evaldt et al 2011). These variations were not observed in the material analysed during this particular project.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to the aperture, there are other important characters which can be applied to pollen morphology, for identification, definition of shape and other factors such as wall ornamentation. In terms of Passiflora, studies made by Dettke & Santos (2009) underscore the importance of the number and type of apertures as part of taxonomic and phylogenetic studies, in terms of such a diverse genus from a palynological point of view.…”

Section: Discussionmentioning

confidence: 99%

Morphology and viability of pollen grains from passion fruit species (Passiflora spp.)

et al. 2013

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The characterization and viability of pollen grains are useful tools to guide crosses in breeding programs. The objective of this study was to describe the morphological patterns and viability of pollen grains from five accessions of Passiflora edulis f. flavicarpa O. Deg. and five accessions of Passiflora setacea DC. Pollen morphology descriptions were made using light microscopy and scanning electron microscopy, whereas the viability analysis was performed by in vitro germination and histochemical analysis (Lugol's solution and 2,3,5-triphenyltetrazolium chloride). Pollen grains assessed for germination were inoculated in culture medium containing Ca(NO 3 ).4H 2 O (0.03%), Mg(SO 4 ).7H 2 O (0.02%), KNO 3 (0.01%), H 3 BO 3 (0.01%), sucrose (15%) and agar (0.8%). Although P. edulis and P. setacea showed the same shape and type of pollen aperture, the two differed in terms of their morphology and exine ornamentation pattern. In vitro analysis showed that one of the P. edulis f. flavicarpa accessions (designated BGP 330) presented the highest germination rate (53.98%) and longest pollen tube (2.18 mm). The histochemical analysis overestimated pollen viability when compared with the in vitro results. The results of this study contribute to the breeding of Passiflora species by increasing the understanding of their morphology and pollen grain viability.

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Pliocene seeds of Passiflora subgenus Decaloba (Gray Fossil Site, Tennessee) and the impact of the fossil record on understanding the diversification and biogeography of Passiflora

Hermsen

2023

American J of Botany

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Premise: Passiflora is a diverse genus of ~570 extant species primarily distributed in the Americas, from the eastern United States to Argentina and Chile. Nevertheless, the known fossil record of Passiflora is small. To date, only two fossil seed species have been unequivocally assigned to the genus. In this contribution, rare sulcate seeds from Gray Fossil Site are described as a third fossil seed species of Passiflora. Methods: Three partial seeds with sulcate sculpture from Gray Fossil Site, early Pliocene, Tennessee, USA, were examined, photographed, and measured. They were compared to samples of sulcate seeds from six extant Passiflora species in supersection Decaloba. A broader survey of sulcate seeds produced by modern species in the subgenera Decaloba, Deidamioides, and Tryphostemmatoides was done using published illustrations and descriptions. Results: The Gray Fossil Site seeds are described as Passiflora sulcatasperma, sp. nov., and assigned to subgenus Decaloba, supersection Decaloba. They are characterized by their small size, elliptical shape, ridged-and-sulcate sculpture, rugulose ridges, and thin palisade seed coat. Conclusions: The two largest subgenera of Passiflora can be identified from Neogene fossils. Subgenus Decaloba is represented by two fossil seed species, P. bulgarica (Miocene, Bulgaria) and P. sulcatasperma (Pliocene, USA). Subgenus Passiflora is represented by fossil pollen (Miocene, Argentina and Brazil) and P. appalachiana seeds (Pliocene, USA). The distributions of fossil and modern species suggest that Passiflora may have used both North Atlantic and Antarctic routes to expand into Europe and the Asian-Oceanian Paleotropics, respectively.

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

Cited by 20 publications

References 12 publications

Pollen morphology of selected species of Passiflora L. (Passifloraceae) from the Atlantic Forest

Pollen morphology of selected species of Passiflora L. (Passifloraceae) from the Atlantic Forest

Morphology and viability of pollen grains from passion fruit species (Passiflora spp.)

Pliocene seeds of Passiflora subgenus Decaloba (Gray Fossil Site, Tennessee) and the impact of the fossil record on understanding the diversification and biogeography of Passiflora

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