Morphological analysis of pollen grains in Machaerium species from São Paulo, Brazil
Abstract Pollen morphology serves as a valuable tool for taxonomic characterization and evolutionary studies. In this study, we conducted a detailed morphological analysis of pollen grains from 16 species of Machaerium Pers. (Fabaceae) occurring in São Paulo, Brazil. Pollen samples were obtained fro...
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Sociedade Botânica do Brasil
2024-12-01
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| Series: | Acta Botânica Brasílica |
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| author | Vitória Húngaro Bocutti Gusman Eduardo Lopes Soares Cintia Neves de Souza Isaura de Paula Cerdan Ana Carolina Venancio Lopes Eduardo Custódio Gasparino |
| author_facet | Vitória Húngaro Bocutti Gusman Eduardo Lopes Soares Cintia Neves de Souza Isaura de Paula Cerdan Ana Carolina Venancio Lopes Eduardo Custódio Gasparino |
| author_sort | Vitória Húngaro Bocutti Gusman |
| collection | DOAJ |
| description | Abstract Pollen morphology serves as a valuable tool for taxonomic characterization and evolutionary studies. In this study, we conducted a detailed morphological analysis of pollen grains from 16 species of Machaerium Pers. (Fabaceae) occurring in São Paulo, Brazil. Pollen samples were obtained from herbarium specimens and subjected to both qualitative and quantitative analyses using light microscopy and scanning electron microscopy. Our results confirm the stenopalynous character of Machaerium pollen, characterized by monads, isopolar pollen grains, 3-colporate with narrow colpi, and microreticulate exine. Quantitative measurements of colpus length and width, and endoaperture width, proved to be relevant for species differentiation. Additionally, qualitative characteristics such as pollen size, amb, shape, aperture position, presence of fastigium, and the thickness of the exine layer were identified as distinguishing factors among species. Despite variations observed, our analysis did not reveal distinct pollen features for taxonomic sections within the genus, indicating a high degree of pollen similarity among species. These findings contribute to our understanding of pollen morphology in Machaerium species and highlight the importance of pollen characteristics in taxonomic studies and evolutionary research. |
| format | Article |
| id | doaj-art-e428941021d841eda2d609b744e4c449 |
| institution | DOAJ |
| issn | 1677-941X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Sociedade Botânica do Brasil |
| record_format | Article |
| series | Acta Botânica Brasílica |
| spelling | doaj-art-e428941021d841eda2d609b744e4c4492025-08-20T02:51:35ZengSociedade Botânica do BrasilActa Botânica Brasílica1677-941X2024-12-013810.1590/1677-941x-abb-2024-0042Morphological analysis of pollen grains in Machaerium species from São Paulo, BrazilVitória Húngaro Bocutti Gusmanhttps://orcid.org/0009-0000-6814-0753Eduardo Lopes Soareshttps://orcid.org/0000-0001-9783-2660Cintia Neves de Souzahttps://orcid.org/0000-0002-8061-6512Isaura de Paula Cerdanhttps://orcid.org/0000-0002-9222-4524Ana Carolina Venancio Lopeshttps://orcid.org/0000-0002-6381-1877Eduardo Custódio Gasparinohttps://orcid.org/0000-0001-6078-7341Abstract Pollen morphology serves as a valuable tool for taxonomic characterization and evolutionary studies. In this study, we conducted a detailed morphological analysis of pollen grains from 16 species of Machaerium Pers. (Fabaceae) occurring in São Paulo, Brazil. Pollen samples were obtained from herbarium specimens and subjected to both qualitative and quantitative analyses using light microscopy and scanning electron microscopy. Our results confirm the stenopalynous character of Machaerium pollen, characterized by monads, isopolar pollen grains, 3-colporate with narrow colpi, and microreticulate exine. Quantitative measurements of colpus length and width, and endoaperture width, proved to be relevant for species differentiation. Additionally, qualitative characteristics such as pollen size, amb, shape, aperture position, presence of fastigium, and the thickness of the exine layer were identified as distinguishing factors among species. Despite variations observed, our analysis did not reveal distinct pollen features for taxonomic sections within the genus, indicating a high degree of pollen similarity among species. These findings contribute to our understanding of pollen morphology in Machaerium species and highlight the importance of pollen characteristics in taxonomic studies and evolutionary research.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062024000100141&lng=en&tlng=enCerradoFabaceaeMultivariate analysisPalynologyPapilionoideae |
| spellingShingle | Vitória Húngaro Bocutti Gusman Eduardo Lopes Soares Cintia Neves de Souza Isaura de Paula Cerdan Ana Carolina Venancio Lopes Eduardo Custódio Gasparino Morphological analysis of pollen grains in Machaerium species from São Paulo, Brazil Acta Botânica Brasílica Cerrado Fabaceae Multivariate analysis Palynology Papilionoideae |
| title | Morphological analysis of pollen grains in Machaerium species from São Paulo, Brazil |
| title_full | Morphological analysis of pollen grains in Machaerium species from São Paulo, Brazil |
| title_fullStr | Morphological analysis of pollen grains in Machaerium species from São Paulo, Brazil |
| title_full_unstemmed | Morphological analysis of pollen grains in Machaerium species from São Paulo, Brazil |
| title_short | Morphological analysis of pollen grains in Machaerium species from São Paulo, Brazil |
| title_sort | morphological analysis of pollen grains in machaerium species from sao paulo brazil |
| topic | Cerrado Fabaceae Multivariate analysis Palynology Papilionoideae |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062024000100141&lng=en&tlng=en |
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