A comparative study of latex-producing tissues in genera of Liabeae (Asteraceae)

Laticifers are highly specialized living plant cells which produce and contain latex. Occurrence of latex was used to establish morphological affinities (i) between Liabeae and other Asteracean tribes, (ii) among the Liabean genera, and (iii) in order to obtain phylogenies within Liabeae. However, s...

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Autores principales: Gutiérrez, Diego Germán, Luna, María Luján
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Botánica
Latex
Laticifer
Liabeae
Microliabum
Munnozia
Paranephelius
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/159598
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-159598
record_format dspace
spelling I19-R120-10915-1595982023-10-30T20:08:17Z http://sedici.unlp.edu.ar/handle/10915/159598 A comparative study of latex-producing tissues in genera of Liabeae (Asteraceae) Gutiérrez, Diego Germán Luna, María Luján 2013 2023-10-30T19:04:04Z en Botánica Latex Laticifer Liabeae Microliabum Munnozia Paranephelius Laticifers are highly specialized living plant cells which produce and contain latex. Occurrence of latex was used to establish morphological affinities (i) between Liabeae and other Asteracean tribes, (ii) among the Liabean genera, and (iii) in order to obtain phylogenies within Liabeae. However, structures and types of latex-producing tissues in this tribe have not yet been studied anatomically. In the present paper latexproducing structures of aerial parts in species of Microliabum, Munnozia, and Paranephelius (Liabeae), from open areas in mid-elevation Andean forests and in Andean high-elevation habitats, were studied. In all the analyzed species, latex secretion was easily observed in stem and leaf blade hand sections. Laticifers accompanied vascular tissues in all the cases, throughout stems and leaves, and they were of the articulated anastomosed type, at least in fully developed stages. Laticifers were found facing both, the xylem and the phloem, except for Paranephelius stems, in which they occur merely next to the phloem. Leaf laticifers form a reticulum accompanying the vein system. The type of latex-producing tissue shared by Microliabum and Munnozia could be a character shared by common ancestry whereas the laticifer system of Paranephelius stems could represent an evolutionary novelty for this genus. The laticifer type described in this study in aerial parts of Liabeae may allow establishing morphological affinities with tribes Cichorieae and Arctoteae. Facultad de Ciencias Naturales y Museo Comisión de Investigaciones Científicas de la provincia de Buenos Aires Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 33-44
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Botánica
Latex
Laticifer
Liabeae
Microliabum
Munnozia
Paranephelius
spellingShingle Botánica
Latex
Laticifer
Liabeae
Microliabum
Munnozia
Paranephelius
Gutiérrez, Diego Germán
Luna, María Luján
A comparative study of latex-producing tissues in genera of Liabeae (Asteraceae)
topic_facet Botánica
Latex
Laticifer
Liabeae
Microliabum
Munnozia
Paranephelius
description Laticifers are highly specialized living plant cells which produce and contain latex. Occurrence of latex was used to establish morphological affinities (i) between Liabeae and other Asteracean tribes, (ii) among the Liabean genera, and (iii) in order to obtain phylogenies within Liabeae. However, structures and types of latex-producing tissues in this tribe have not yet been studied anatomically. In the present paper latexproducing structures of aerial parts in species of Microliabum, Munnozia, and Paranephelius (Liabeae), from open areas in mid-elevation Andean forests and in Andean high-elevation habitats, were studied. In all the analyzed species, latex secretion was easily observed in stem and leaf blade hand sections. Laticifers accompanied vascular tissues in all the cases, throughout stems and leaves, and they were of the articulated anastomosed type, at least in fully developed stages. Laticifers were found facing both, the xylem and the phloem, except for Paranephelius stems, in which they occur merely next to the phloem. Leaf laticifers form a reticulum accompanying the vein system. The type of latex-producing tissue shared by Microliabum and Munnozia could be a character shared by common ancestry whereas the laticifer system of Paranephelius stems could represent an evolutionary novelty for this genus. The laticifer type described in this study in aerial parts of Liabeae may allow establishing morphological affinities with tribes Cichorieae and Arctoteae.
format Articulo
Articulo
author Gutiérrez, Diego Germán
Luna, María Luján
author_facet Gutiérrez, Diego Germán
Luna, María Luján
author_sort Gutiérrez, Diego Germán
title A comparative study of latex-producing tissues in genera of Liabeae (Asteraceae)
title_short A comparative study of latex-producing tissues in genera of Liabeae (Asteraceae)
title_full A comparative study of latex-producing tissues in genera of Liabeae (Asteraceae)
title_fullStr A comparative study of latex-producing tissues in genera of Liabeae (Asteraceae)
title_full_unstemmed A comparative study of latex-producing tissues in genera of Liabeae (Asteraceae)
title_sort comparative study of latex-producing tissues in genera of liabeae (asteraceae)
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/159598
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