Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil
ABSTRACT This work aimed to morphologically characterize 22 species of Spermacoceae s.s found in the Atlantic Forest in the state of Rio de Janeiro with the purpose of improving palynological knowledge of the studied species. The studied species included six species of Borreria and Denscantia cymosa...
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Sociedade Botânica do Brasil
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| Series: | Acta Botânica Brasílica |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020005001201&lng=en&tlng=en |
| _version_ | 1819041094929743872 |
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| author | Vania Gonçalves-Esteves Gabrielle Reboredo Menezes Vieira Renata Jacomo Paixão de Carvalho Sonia Regina de Melo Crespo Claudia Barbieri Ferreira Mendonça |
| author_facet | Vania Gonçalves-Esteves Gabrielle Reboredo Menezes Vieira Renata Jacomo Paixão de Carvalho Sonia Regina de Melo Crespo Claudia Barbieri Ferreira Mendonça |
| author_sort | Vania Gonçalves-Esteves |
| collection | DOAJ |
| description | ABSTRACT This work aimed to morphologically characterize 22 species of Spermacoceae s.s found in the Atlantic Forest in the state of Rio de Janeiro with the purpose of improving palynological knowledge of the studied species. The studied species included six species of Borreria and Denscantia cymosa, Emmeorhiza umbellata, Hexasepalum apiculatum, H. radula, H. teres, Manettia fimbriata, Mitracarpus eichleri, M. frigidus, M. hirtus, M. lhotzkyanus, M. megapotamicus, Oldenlandia salzmannii, Pentodon pentandrus, Richardia brasiliensis, Richardia scabra and Spermacoce rubescens. Acetolysed pollen grains were analyzed using light (LM) and scanning electron miscroscopy (SEM). The pollen grains varied in size (polar diameter) from medium to large, with the exception of Hexasepalum teres which was very large. Pollen grains were oblate spheroidal in most species, suboblate in six species, prolate spheroidal in Spermacoce rubescens and subprolate in Manettia fimbriata. All pollen grains were colporate, while number of apertures varied (three-19). The endoaperture was lolongate in most species and lalongate in four species. Sexine ornamentation varied among reticulate, reticulate-granulate, microreticulate, granulate with perforation, echinate-perforate and vermiculate. Pollen attributes were found to distinguish the studied species, but do not separate genera, confirming that Spermacoceae is euripolynic. |
| first_indexed | 2024-12-21T09:19:32Z |
| format | Article |
| id | doaj.art-5e6d53242cd44daf97d0bf10de6b0074 |
| institution | Directory Open Access Journal |
| issn | 0102-3306 1677-941X |
| language | English |
| last_indexed | 2024-12-21T09:19:32Z |
| publisher | Sociedade Botânica do Brasil |
| record_format | Article |
| series | Acta Botânica Brasílica |
| spelling | doaj.art-5e6d53242cd44daf97d0bf10de6b00742022-12-21T19:09:03ZengSociedade Botânica do BrasilActa Botânica Brasílica0102-33061677-941X10.1590/0102-33062019abb0286S0102-33062020005001201Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, BrazilVania Gonçalves-EstevesGabrielle Reboredo Menezes VieiraRenata Jacomo Paixão de CarvalhoSonia Regina de Melo CrespoClaudia Barbieri Ferreira MendonçaABSTRACT This work aimed to morphologically characterize 22 species of Spermacoceae s.s found in the Atlantic Forest in the state of Rio de Janeiro with the purpose of improving palynological knowledge of the studied species. The studied species included six species of Borreria and Denscantia cymosa, Emmeorhiza umbellata, Hexasepalum apiculatum, H. radula, H. teres, Manettia fimbriata, Mitracarpus eichleri, M. frigidus, M. hirtus, M. lhotzkyanus, M. megapotamicus, Oldenlandia salzmannii, Pentodon pentandrus, Richardia brasiliensis, Richardia scabra and Spermacoce rubescens. Acetolysed pollen grains were analyzed using light (LM) and scanning electron miscroscopy (SEM). The pollen grains varied in size (polar diameter) from medium to large, with the exception of Hexasepalum teres which was very large. Pollen grains were oblate spheroidal in most species, suboblate in six species, prolate spheroidal in Spermacoce rubescens and subprolate in Manettia fimbriata. All pollen grains were colporate, while number of apertures varied (three-19). The endoaperture was lolongate in most species and lalongate in four species. Sexine ornamentation varied among reticulate, reticulate-granulate, microreticulate, granulate with perforation, echinate-perforate and vermiculate. Pollen attributes were found to distinguish the studied species, but do not separate genera, confirming that Spermacoceae is euripolynic.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020005001201&lng=en&tlng=engentianalesmultivariate analysispalynologyrubioideaesystematics |
| spellingShingle | Vania Gonçalves-Esteves Gabrielle Reboredo Menezes Vieira Renata Jacomo Paixão de Carvalho Sonia Regina de Melo Crespo Claudia Barbieri Ferreira Mendonça Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil Acta Botânica Brasílica gentianales multivariate analysis palynology rubioideae systematics |
| title | Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil |
| title_full | Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil |
| title_fullStr | Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil |
| title_full_unstemmed | Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil |
| title_short | Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil |
| title_sort | pollen morphology of some species of spermacoceae s s rubiaceae of the atlantic forest rio de janeiro brazil |
| topic | gentianales multivariate analysis palynology rubioideae systematics |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020005001201&lng=en&tlng=en |
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