Pollen Morphology of Bignoniaceae from Brazilian Forest Fragments and Its Systematic Significance

Cintia Neves de Souza; Andréia Alves Rezende; Eduardo Custódio Gasparino

doi:10.1080/01916122.2018.1476924

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10 May 2019 Pollen Morphology of Bignoniaceae from Brazilian Forest Fragments and Its Systematic Significance

Cintia Neves de Souza, Andréia Alves Rezende, Eduardo Custódio Gasparino

Author Affiliations +

Cintia Neves de Souza,^1,2,* Andréia Alves Rezende,^3,** Eduardo Custódio Gasparinohttps://orcid.org/0000-0001-6078-7341^2,***,****

¹aFaculdade de Filosofia, Ciências e Letras, Programa de Pós-Graduação em Biologia Comparada, Univers
²bFaculdade de Ciências Agrárias e Veterinárias, Departamento de Biologia Aplicada à Agropecuária, Un
³cFaculdade de Engenharia, Departamento de Biologia e Zootecnia, Universidade Estadual Paulista (UNES

^*CINTIA NEVES DE SOUZA graduated with a BSc in biological sciences and MSc in Agronomy, Genetics and Plant Breeding from Universidade Estadual Paulista, UNESP, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, Brazil. She is studying for a PhD in Comparative Biology at the Universidade de São Paulo (USP), Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Brazil. Cintia specialises on the palynology of the Bignoniaceae and Gesneriaceae.
^**ANDREIA ALVES REZENDE is a professor in the Departamento de Biologia e Zootecnia of the Universidade Estadual Paulista, UNESP, Faculdade de Engenharia, Ilha Solteira, Brazil. She received a degree in biological sciences from the Universidade Estadual Paulista, UNESP in 1993. Andreia also has a MSc and a PhD in Plant Biology from the Universidade Estadual de Campinas, UNICAMP, Brazil between 1998 and 2005. Her research is on systematics and ecology of trees and lianas, especially in vegetation of the northwest region of the state of São Paulo: composition, structure and conservation of biodiversity.
^***CONTACT Eduardo Custóodio Gasparino ecgasparino@fcav.unesp.br Faculdade de Ciências Agrárias e Veterinárias, Departamento de Biologia Aplicada á Agropecuária, Universidade Estadual Paulista (UNESP), Jaboticabal, Sao Paulo, Brazil
^****EDUARDO CUSTÓDIO GASPARINO is a professor in the Departamento de Biologia aplicada à Agropecuária of the Universidade Estadual Paulista, UNESP, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, Brazil. He received a degree in biological sciences from the Universidade Estadual Paulista, UNESP in 2001. Eduardo also has a MSc and a PhD in plant biodiversity and environment from the Instituto de Botânica, Brazil between 2003 and 2008. His research is on the palynology of the Brazilian ecosystems, especially Cerrado and Atlantic Forest.

Palynology, 43(2):333-347 (2019). https://doi.org/10.1080/01916122.2018.1476924

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Abstract

Bignoniaceae Juss. are widely distributed in tropical and subtropical regions. Most of their Neotropical species have a climbing habit, which makes the family one of the most ecologically important in the Americas. This study of pollen morphology from 23 Bignoniaceae species in Brazilian forest fragments aimed to investigate new pollen characteristics of the family by light and scanning electron microscopy, which can assist in delimitating Bignoniaceae species and taxonomy. Another aim of the study was to analyze the evolution of the family's pollen characteristics. The pollen grains were acetolyzed, measured and photographed. We describe the pollen grains based on qualitative data, and quantitative data were analyzed using descriptive and multivariate statistics. Based on the qualitative data, an ancestral reconstruction of pollen morphology characteristics was performed for the taxa analyzed. We used the pollen data to understand the relationships established by previous phylogenies. The pollen grains are monads or tetrads, apolar or isopolar, and medium to large, with circular, subcircular to subtriangular amb; oblate to oblate-spheroidal; inaperturate, 6-colpate, (7)-8-(9)-colpate or 3-colporate with short or long colpi that are narrow, wide or very wide and with or without margo; lalongate endoapertures sometimes not evident; and psilate perforate, microreticulate or reticulate exine, homoor heterobrochate, with simpli or duplicolumellate muri. This result confirms Bignoniaceae as a eurypalynous family, and it allows the identification of pollen morphological characteristics shared by genera and species studied.

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Cintia Neves de Souza, Andréia Alves Rezende, and Eduardo Custódio Gasparino "Pollen Morphology of Bignoniaceae from Brazilian Forest Fragments and Its Systematic Significance," Palynology 43(2), 333-347, (10 May 2019). https://doi.org/10.1080/01916122.2018.1476924

Published: 10 May 2019

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Palynology
Vol. 43 • No. 2
April 2019

KEYWORDS

Bignonieae

Eurypalynous

palynology

phylogeny

taxonomy

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Cintia Neves de Souza, Andréia Alves Rezende, Eduardo Custódio Gasparino "Pollen Morphology of Bignoniaceae from Brazilian Forest Fragments and Its Systematic Significance," Palynology, 43(2), 333-347, (10 May 2019)

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