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Artículo

A comparative approach to understanding the ovule, seed, and fruit development in Bulbostylis (Cyperaceae: Cyperoideae: Abildgaardieae)

Reutemann Arnolfo, Andrea GuadalupeIcon ; Muchut, Sebastián ElíasIcon ; Uberti Manassero, Nora GracielaIcon ; Laforga Vanzela, André Luís; López, María Gabriela; Vegetti, Abelardo CarlosIcon ; González, Ana MaríaIcon
Fecha de publicación: 04/2021
Editorial: Springer Wien
Revista: Protoplasma
ISSN: 0033-183X
e-ISSN: 1615-6102
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ciencias de las Plantas, Botánica

Resumen

In the present work, we study the ovule, seed, and fruit development in six Bulbostylis species in order to characterize the genus in a comparative approach and to identify the characteristics that can be used in taxonomy and phylogeny. Flowers and fruits at different developmental stages were analyzed using LM and SEM after processing according to standard techniques. The species studied have the following: anatropous and bitegmic ovules, weak crassinucellar ovules, obturator of integumentary origin, monosporic embryo sac of the Polygonum type, nuclear endosperm, hypostase formation, seed coat formed by tanniferous endotegmen and exotesta, and Bulbostylis-type embryo. On the other hand, the pericarp development constitutes the main variation within Bulbostylis since the cells of the exocarp may or may not present starch grains, and their inner periclinal walls may be slightly or deeply concave depending on the degree of development of the mesocarp sclereids. In a taxonomic context, the results herein obtained are in conflict with studies which suggest infrageneric groupings based on fruit micromorphology, and also with the relationship among the Bulbostylis species based on molecular analysis. This work contributes to a better understanding of the reproductive anatomy and embryology in Bulbostylis, and reveals the first insights about the origin of multiple embryos in Cyperaceae. Given the frequent presence of polyembryony in Bulbostylis, and the poor mention of this condition in the family, this work highlights an aspect in the anatomy of Cyperaceae that must be re-explored.
Palabras clave: ACHENE , ANATOMY , DEVELOPMENT , EMBRYOLOGY , POLYEMBRYONY , REPRODUCTIVE STRUCTURES
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/169333
URL: https://link.springer.com/article/10.1007%2Fs00709-021-01649-7
DOI: http://dx.doi.org/10.1007/s00709-021-01649-7
Colecciones
Articulos(IBONE)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Citación
Reutemann Arnolfo, Andrea Guadalupe; Muchut, Sebastián Elías; Uberti Manassero, Nora Graciela; Laforga Vanzela, André Luís; López, María Gabriela; et al.; A comparative approach to understanding the ovule, seed, and fruit development in Bulbostylis (Cyperaceae: Cyperoideae: Abildgaardieae); Springer Wien; Protoplasma; 259; 1; 4-2021; 141-153
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