Polyads types of the mimosoid clade (Caesalpinioideae, Fabaceae): size and pollen numbers variations

Soares, Eduardo Lopes; Landi, Lorrayne Albernaz Domingues Camilo; Souza, Cintia Neves de; Gasparino, Eduardo Custódio

doi:10.1080/00173134.2021.1990397

Cited by 10 publications

(4 citation statements)

References 32 publications

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“…The relationship between ectoaperture length and polar diameter in equatorial view was used to define very long ectoapertures (�0.75), long ectoapertures (0.74-0.50), short ectoapertures (0.49-0.25), and very short ectoapertures (�0.24); this measurement is the colpus length index (CLI). If the average length and width of the endoapertures are close to each other in value, the calculation for their definition will follow Soares et al (2022). Photomicrographs were taken with a Leica DM1000LED light microscope for the LM photos and a Zeiss EVO-MA10 scanning electron microscope for the SEM images.…”

Section: Methodsmentioning

confidence: 99%

Pollen morphology characterization of Dryades Groppo, Kallunki & Pirani, a new genus of Rutaceae, and its phylogenetically related species

2023

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Rutaceae (Sapindales) is represented by approximately 2040 species and 150-170 genera. Conchocarpus is the genus with the highest number of species and is circumscribed by a combination of character states, making it a polymorphic group. A recent study proposed a new genus, Dryades, formed by species formerly positioned in Conchocarpus. This study aims to describe the pollen morphology of Dryades species, comparing it with the palynology of phylogenetically related species, to present data that can characterize the species of Dryades. We analyzed the pollen grains of Dryades species and eight species of the genera Andreadoxa, Angostura, Erythrochiton, Galipea, Rauia and Conchocarpus. The pollen grains were acetolyzed, measured, described qualitatively, and analyzed quantitatively. Illustrations using light microscopy (LM) and scanning electron microscopy (SEM) are presented. Multivariate analysis was performed. The pollen grains are monads, isopolar, medium to very large in size, with subcircular to subtriangular amb, and oblate-spheroidal to prolate shape. The apertures are 3-or 5-colporate, varying in size (very small to very large colpi). The endoapertures are usually lalongate, rarely circular. The pollen grains analyzed are microreticulate, reticulate, macroreticulate, reticulate-baculate, baculate or verrucate-baculate. Both qualitative and quantitative characteristics of pollen grains proved to be important in distinguishing genera and grouping species within genera (in particular, the number of apertures, the length of the ectoaperture, the exine ornamentation and the size of the pollen grains). Dryades species show similarities in pollen morphology to species of related genera such as Andreodoxa, Galipea and especially Rauia. The shape of pollen grains and the number of apertures in Dryades are distinct from those found in Conchocarpus macrophyllus. The pollen data observed in this study confirm the pollen diversity of Rutaceae.

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Section: Methodsmentioning

confidence: 99%

Pollen morphology characterization of Dryades Groppo, Kallunki & Pirani, a new genus of Rutaceae, and its phylogenetically related species

2023

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“…In recent years, manifold palynological studies have been carried out in the Cerrado forest fragment areas, especially in the State of São Paulo (Brazil). Families such as Bignoniaceae (Souza and Gasparino 2014;Souza et al 2019), Malpighiaceae (Belonsi and Gasparino 2015), Rutaceae (Dutra and Gasparino 2018), Amaranthaceae and Araliaceae (Landi and Gasparino 2018), Sapindaceae (Bellonzi et al 2020), Fabaceae (Soares et al 2021(Soares et al , 2022, Rubiaceae (Dutra et al 2020), Solanaceae (Landi et al 2021), Malvaceae (Lopes et al 2022) and Boraginaceae (Landi et al 2022) have been studied. These studies showed variations in the pollen unit, polarity, shape, amb, size, aperture and ornamentation of the pollen grains of these families, contributing to the taxonomic knowledge on and the conservation of these species in the forest area.…”

Section: Introductionmentioning

confidence: 99%

Contribution to Celastraceae palynology from Cerrado forest fragments: a focus on shape, amb and exine ornamentation

2023

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Forest fragments in the Cerrado are areas of prominent biological importance due to their great species richness and biodiversity. These areas host endemic species of Celastraceae, the knowledge of which contributes to the preservation of this biome. This study aims to characterize the pollen morphology of 10 native species of Celastraceae found in forest fragments in the state of São Paulo, Brazil, contributing to the knowledge of the taxa for future taxonomic studies, and providing data for the conservation of the species in the forest areas. The pollen grains were acetolyzed, measured, described qualitatively and illustrated using light microscopy and scanning electron microscopy. The pollen characters referring to the pollen unit, polarity, type and number of apertures are similar in all the species studied. The shape, amb and exine ornamentation of pollen grains are the diagnostic qualitative morphological data for Celastraceae in this study. Microreticulate pollen grains were observed in Celastrus, Hippocratea and Pristimera; reticulate pollen grains with a very thick exine characterize the analyzed species of Plenckia; and reticulate and microreticulate ornamentation was observed among the species of Monteverdia. The results obtained here allow us to distinguish species of the analyzed genera and confirm the pollen diversity previously reported for Celastraceae.

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“…Fabaceae is eurypalynous family (Luz et al, 2013), with vastly diverse pollen characters (Pavlova & Manova, 2000;Taia, 2004;Lashin 2006;Liao et al, 2022). Among the numerous studies that explain the pollen morphology of Fabaceae species: Erdtman (1952), Barth et al, (1976), Graham et al, (1980), Banks & Lewis, (2009), Luz et al, (2013), Antonio-Domingues et al, (2018), Talebi, et al, (2020), Soares et al, (2022). In previous studies, a wide range of pollen types and variations in pollen morphology among Fabaceae species, demonstrating the importance of describing pollen grains for the identification of species, as well as to aid in the resolution of taxonomic issues within the family.…”

Section: Introductionmentioning

confidence: 99%

Pollen Grain Variation among Some Trees of Fabaceae in New Damietta, Egypt.

Alnagger¹,

Elnaga²,

Rabei³

2022

Scientific Journal for Damietta Faculty of Science

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The current study aims at investigating the morphology of pollen grain for eleven woody species of Fabaceae cultivated in New Damietta, Egypt. The pollen grains were prepared according to Erdtman's acetolysis method, described and photographed using light microscopy (LM). The results showed variations in their qualitative and quantitative features. Differences in pollen shape (subprolate, prolate, prolate-spheroidal, oblate-spheroidal), size (medium to large), pollen arrangement (monads or polyads), amb (circular, irregular, elliptic or triangular), polarity (isopolar, heteropolar), type of apertures (porate, colporate, inaperturate) and exine ornamentation patterns (psilate, verrucate, granulate, reticulate and psilate-perforate) are characterized.Electrophoretic (SDS-PAGE) examination of total pollen protein content of four species (Acacia ehrenbergiana, Cassia glauca, Delonix regia, Leucaena leucocephala) revealed distinct protein bands. The results of this study is of great importance in understanding the pollen types of some allergy producing species.

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Polyads types of the mimosoid clade (Caesalpinioideae, Fabaceae): size and pollen numbers variations

Cited by 10 publications

References 32 publications

Pollen morphology characterization of Dryades Groppo, Kallunki & Pirani, a new genus of Rutaceae, and its phylogenetically related species

Pollen morphology characterization of Dryades Groppo, Kallunki & Pirani, a new genus of Rutaceae, and its phylogenetically related species

Contribution to Celastraceae palynology from Cerrado forest fragments: a focus on shape, amb and exine ornamentation

Pollen Grain Variation among Some Trees of Fabaceae in New Damietta, Egypt.

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