Phylogenetic relationships within turneraceae based on morphological characters with emphasis on seed micromorphology

Genera of Turneraceae differ notably in connation/adnation of calyx, corolla, and androecium. Floral and seed morphology were analyzed in all genera. Phylogenetic analyses were made using a matrix of 91 characters coded for 102 taxa including all genera of Turneraceae and all series of Turnera. Our...

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Autores principales: Arbo, María Mercedes, González, Ana María, Sede, Silvana Mabel
Formato: Artículo
Lenguaje:Inglés
Publicado: Springer Nature 2022
Materias:
Adnation
Africa
América
Connation
Floral morphology
Seed micromorphology
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/48043
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-48043
record_format dspace
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Adnation
Africa
América
Connation
Floral morphology
Seed micromorphology
spellingShingle Adnation
Africa
América
Connation
Floral morphology
Seed micromorphology
Arbo, María Mercedes
González, Ana María
Sede, Silvana Mabel
Phylogenetic relationships within turneraceae based on morphological characters with emphasis on seed micromorphology
topic_facet Adnation
Africa
América
Connation
Floral morphology
Seed micromorphology
description Genera of Turneraceae differ notably in connation/adnation of calyx, corolla, and androecium. Floral and seed morphology were analyzed in all genera. Phylogenetic analyses were made using a matrix of 91 characters coded for 102 taxa including all genera of Turneraceae and all series of Turnera. Our goals were: assessing the impact of morphology in the cladistic analyses of Turneraceae and comparing our results with those based on molecular datasets. Our analyses suggest that all genera are monophyletic. The inclusion of seed micromorphology in the analyses increased resolution within Turnera, the strict consensus tree shows four main clades, each gathering two or more current series. A comparison of morphological and molecular trees is difficult to make due to the great differences in taxon sampling. However, some clades or subclades are consistent in both phylogenetic approaches. Apparently, the formation of a floral tube conferred an evolutionary advantage to the Turneraceae, because it developed in 66 % of the genera. The morphological complexity of the tube increased in several steps: (1) adnation of petal claws to calyx, developing a perianth tube; (2) partial adnation of stamens to the perianth tube; (3) fusion of sepal and petal veins, shaping a 10-veined perianth tube; (4) development of nectar pockets up to the throat turning the tube into an appendicular hypanthium. The reddishorange aril, associated with ornitochory, is plesiomorphic in Turneraceae, represented only in Erblichia; the other genera have white/whitish aril, associated with mirmecochory, except Mathurina, with an aril divided into filaments as an adaptation to anemochory.
format Artículo
author Arbo, María Mercedes
González, Ana María
Sede, Silvana Mabel
author_facet Arbo, María Mercedes
González, Ana María
Sede, Silvana Mabel
author_sort Arbo, María Mercedes
title Phylogenetic relationships within turneraceae based on morphological characters with emphasis on seed micromorphology
title_short Phylogenetic relationships within turneraceae based on morphological characters with emphasis on seed micromorphology
title_full Phylogenetic relationships within turneraceae based on morphological characters with emphasis on seed micromorphology
title_fullStr Phylogenetic relationships within turneraceae based on morphological characters with emphasis on seed micromorphology
title_full_unstemmed Phylogenetic relationships within turneraceae based on morphological characters with emphasis on seed micromorphology
title_sort phylogenetic relationships within turneraceae based on morphological characters with emphasis on seed micromorphology
publisher Springer Nature
publishDate 2022
url http://repositorio.unne.edu.ar/handle/123456789/48043
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AT gonzalezanamaria phylogeneticrelationshipswithinturneraceaebasedonmorphologicalcharacterswithemphasisonseedmicromorphology
AT sedesilvanamabel phylogeneticrelationshipswithinturneraceaebasedonmorphologicalcharacterswithemphasisonseedmicromorphology
bdutipo_str Repositorios
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