A palynological perspective on the tribe Viteae of the grape family (Vitaceae)

Cartaxo-Pinto, Simone; Paulo, Gabriel Henrique Cardoso; Jackes, Betsy R.; Gonçalves-Esteves, Vânia; Mendonça, Cláudia Barbieri Ferreira

doi:10.1080/00173134.2021.1960420

Cited by 8 publications

(4 citation statements)

References 17 publications

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“…Unacetolyzed pollen grains were mounted on stubs with carbon tape (Cartaxo-Pinto et al 2022a) and examined using an FEI Quanta 450 field-emission scanning electron microscope at the Nanotechnology Characterisation Center (CENANO), National Institute of Technology, Brazil.…”

Section: Methodsmentioning

confidence: 99%

“…Palynological analysis can be used in research on pollination, pollen dispersion, paleoecology, melissopalynology and forensics. Furthermore, it has fundamental importance in the study of ecological and evolutionary characteristics and phylogenetic relationships of different groups of plants (Cancelli et al 2005; Cui et al 2019; Mezzonato-Pires et al 2019; Gonçalves-Esteves et al 2022; Quamar et al 2022; Cartaxo-Pinto et al 2022a, 2022b, 2022c, 2023). The study of pollen grains is a useful tool for elucidating the taxonomy of several botanical families, and circumscribing genera and subgeneric categories (Gonçalves-Esteves et al 2022).…”

Section: Introductionmentioning

confidence: 99%

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Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae)

Cartaxo-Pinto,

Vieira,

Nascimento

et al. 2023

Palynology

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Calea comprises 157 species that occur in the Neotropics. The genus is organized into eight subgenera and 18 sections. Calea sect. Meyeria consists of eight species occurring exclusively in south-central Brazil. In this study, pollen grains from these eight species were sampled from herborized flower buds in pre-anthesis. Pollen samples were acetolyzed, measured, and photographed under a light microscope. Unacetolyzed pollen grains were examined under a scanning electron microscope. The results were used to characterize pollen morphology and construct a palynotaxonomic key for Calea sect. Meyeria. The analyzed pollen grains were monads, isopolar, usually medium-sized, oblate spheroidal, tricolporate, with lalongate endoaperture, the sexine echinate and thicker than the nexine, and six spines in the apocolpium region. The eight species have very similar pollen grains, but some characters are informative for this section, namely pollen size, polar area, sexine ornamentation, and endoaperture characteristics. Despite the similarity of the pollen grains, palynological analysis was able to contribute to the delimitation of Calea species, providing new information for species distinction within Calea sect. Meyeria.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae)

Cartaxo-Pinto,

Vieira,

Nascimento

et al. 2023

Palynology

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“…For measurements of the equatorial diameter in polar view, apocolpium side, apertures, and exine thickness, 10 measurements were taken per sample. Whenever possible, comparison specimens were analyzed for confirmation of the results (Gonçalves-Esteves et al 2020; Cartaxo-Pinto et al 2022a).…”

Section: Methodsmentioning

confidence: 99%

Palynological diversity of some species of Coussareeae (Rubiaceae) from the Atlantic Forest, Brazil

et al. 2022

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Coussareeae is a neotropical tribe with a complex taxonomic history. Several authors considered it very close to the tribe Psychotrieae owing to similarities in their morphological characteristics, such as solitary ovules. The tribe Coussareeae constitutes the largest basal clade of the subfamily Rubioideae, and most of its genera are well represented in Brazil. The tribe is resolved into three suprageneric clades, including the Coccocypselum and Coussarea-Faramea clades, whose representatives are found in Brazil. This study aimed to ascertain whether pollen attributes corroborate the currently proposed phylogeny and systematics of the tribe. For this, pollen grains of 33 species belonging to the Coccocypselum and Coussarea-Faramea clades were analyzed. Specimens were obtained from herbaria, treated by the acetolysis method, measured, photographed, and described using light and scanning electron microscopy. Morphological analysis showed that pollen grains were medium (25-50 mm) or large (50-100 mm) in size; isopolar or apolar; 2-porate, 3-porate, or 3-colporate; and oblate spheroidal, suboblate, prolate spheroidal, or subprolate. Ornamentation varied among clade representatives. Multivariate analysis of quantitative data revealed that pollen diameter, apocolpium side, pore diameter, colpus length, and endoaperture width were the most significant characters. It can be seen from the results that the studied clades are formed by palynologically distinct genera in terms of polarity, aperture type, and ornamentation. Palynology confirms the proposed taxonomic classification.

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“…Pollen morphology proved important in recent studies, such as archaeobotany [ 8 ], taxonomic and morphological characterization [ 8 , 9 , 10 ] and pollination studies [ 11 ]. Due to the great economic importance of grapevine, pollen studies have mainly focused on cultivars and their productivity [ 12 , 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructure of Croatian Wild Grapevine (Vitis vinifera subsp. sylvestris Gmel Hegi) Pollen Grains Revealed by Scanning Electron Microscopy

Lukšić

Zdunić

Mucalo

et al. 2022

Plants

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Wild grapevine (Vitis vinifera subsp. sylvestris Gmel Hegi) is dioecious with male and female plants, whereas domesticated grapevine is mostly hermaphrodite with self-fertile hermaphrodite flowers. The pollen morphology of wild grapevine has been poorly studied. There is no detailed palynological study of V. sylvestris in Croatia and neighboring countries. Here, scanning electron microscopy (SEM) was used to analyze the pollen of V. sylvestris from male and female individuals growing at two natural sites in Croatia. The selective APT3 marker was used to confirm the flower phenotype with the genetic background. SEM analysis showed that the pollen grains of V. sylvestris were isopolar and radially symmetrical, with foveolate perforated ornamentation, regardless of the flower type of the individuals. All male flowers were 3-colporate and prolate in shape, whereas female individuals varied from subprolate to spheroidal and had inaperturate pollen grains. Pollen shape, dimensions and exine ornamentation proved very informative, and here we address the most polymorphic traits in the analyzed V. sylvestris individuals. Principal component analysis (PCA) and clustering based on pollen morphology variables clearly differentiated individuals by their flower type, and no grouping specific to population was observed, pointing to the conserved pollen structure of V. sylvestris. The results indicate the need to continue the palynological study of V. sylvestris and serve as a good phenotypic basis for functional genetic studies on genes involved in pollen morphology and function.

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A palynological perspective on the tribe Viteae of the grape family (Vitaceae)

Cited by 8 publications

References 17 publications

Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae)

Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae)

Palynological diversity of some species of Coussareeae (Rubiaceae) from the Atlantic Forest, Brazil

Microstructure of Croatian Wild Grapevine (Vitis vinifera subsp. sylvestris Gmel Hegi) Pollen Grains Revealed by Scanning Electron Microscopy

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