Pollen morphology of Boraginaceae <i>s.l.</i> from Brazilian forest fragments: aperture types and ornamentation on Cordiaceae and Heliotropiaceae

Landi, Lorrayne Albernaz Domingues Camilo; Torrati-Guioti, Paloma Gaspar; Gasparino, Eduardo Custódio

doi:10.1080/01916122.2021.2006354

Cited by 6 publications

(2 citation statements)

References 38 publications

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“…These adaptations include root lignification, presence of hairs and glands on leaf surface to secrete salt, epidermal succulence and reduce leaf area (Monteverdi et al, 2008;Farooq et al, 2015). Landi et al (2022) contributed new data in the taxonomy and palynology of the Boraginaceae family using microscopic techniques. They declared it as a eurypalynous family and depicted similarities in the exine ornamentation and aperture of the Heliotropiaceae species.…”

Section: Introductionmentioning

confidence: 99%

Exploration of salinity effect on palyno-morphological characteristics of plant species collected from salt range

Nazish,

Bibi,

Alwahibi

et al. 2024

Bangladesh J. Plant Taxon

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This study aims to explore the pollen morphology of 19 plant species from the Khewra Salt Range by using light microscopy (LM) and scanning electron microscopy (SEM). Plant specimens were collected from various sites in the Khewra Salt Range, identified, and deposited in the Herbarium of Pakistan. Pollen morphology was studied using LM and SEM. Quantitative characteristics, including polar and equatorial diameter, exine thickness, colpus and spines length and width were studied using LM. The studied pollen taxa exhibited extensive variation in size and sculpture, with potential taxonomic implications. Pollen shape of most of the studied species was sub-spheroidal but pollen sizes ranged from 0.98 µm to 14.3µm. Symmetry and polarity of pollen grains were observed, contributing to plant species identification. The P/E ratio varied from Dichanthium annulatum (0.56) to Medicago polymorpha (1.15). Scanning electron micrographs revealed diverse exine sculpturing patterns, such as scabrate and echinate. At the same time, Nerium oleander (0.7-2.1µm) showed high exine thickness and large size colpus with a length of 7.5µm and width of 8.26µm. The largest spines were observed in Vicia sativa (3.7µm long and 1.38 µm wide). The taxonomic key based on palyno-morphological characters offers a tool for quick and precise identification. Pollen viability values were determined. Highest pollen viability was noted for Capparis decidua (97%) that show the species adaptation in Salt range. Palynological features can aid in resolving taxonomic problems and contribute to further karyological and taxonomic evaluations. This study contributes valuable insights into the palynological diversity of plant species of salt range, emphasizing the importance of pollen morphology in understanding and conserving salt-affected ecosystems. Bangladesh J. Plant Taxon. 31(1): 33-49, 2024 (June)

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Section: Introductionmentioning

confidence: 99%

Exploration of salinity effect on palyno-morphological characteristics of plant species collected from salt range

Nazish,

Bibi,

Alwahibi

et al. 2024

Bangladesh J. Plant Taxon

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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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Diversity of pollen morphology in species of Cercidoideae (Fabaceae) from Cerrado forest fragments, Brazil: Bauhinia L. and Schnella Raddi

Soares,

Landi,

de Souza

et al. 2024

Flora

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Pollen morphology of Boraginaceae s.l. from Brazilian forest fragments: aperture types and ornamentation on Cordiaceae and Heliotropiaceae

Cited by 6 publications

References 38 publications

Exploration of salinity effect on palyno-morphological characteristics of plant species collected from salt range

Exploration of salinity effect on palyno-morphological characteristics of plant species collected from salt range

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

Diversity of pollen morphology in species of Cercidoideae (Fabaceae) from Cerrado forest fragments, Brazil: Bauhinia L. and Schnella Raddi

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