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Abstract Detail

Development and Structure

Nejapa Mendoza, Rosa Celia [1], Pace, Marcelo [2].

Wood and bark anatomy of the charismatic vines Wisteria (Leguminosae).

Wisteria is a legume within the subfamily Papilionoideae, composed of lianas naturally distributed in temperate zones of eastern Asia and eastern United States, being also introduced in numerous countries as ornamental. The anatomy of the wood has been previously studied, mainly in Wisteria sinensis and only some characteristics of the phloem have been reported. Therefore, the aim of this work is to provide a complete anatomical description of the secondary xylem and phloem of the species of the genus and compare its anatomical structure between species. We make histological sections and dissociated material of stems from W. sinensis, W. floribunda, W. brachybotrys, and W. frutescens. The general anatomy of the secondary vascular tissue of the genus shows several features of the vascular lianescent syndrome, such as vessel dimorphism, with very wide vessels associated to narrow ones, non-lignified axial parenchyma, high rays, and a cambial variant. Some characteristics that allow to differentiate the genus Wisteria from other legume subfamilies are the presence of narrow vessels with helical thickenings, prismatic crystals in chambers in the axial parenchyma of both the phloem and the xylem, the non-dispersive P protein in the elements of the sieve tube and the stratification of various cell types. Within the subfamily, the subepidermal origin of the periderm and the narrow vessels with helical thickenings are taxonomically useful to differentiate between species of another genus. Here we evidence that the vascular lianescent syndrome is not exclusive to tropical lianas, several characteristics of this have been identified in the temperate genus Wisteria and here we show some anatomical characteristics of the wood and bark that are taxonomically important.

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1 - Universidad Nacional Autónoma de México, Instituto de Biología, Botánica, Circuito Zona Deportiva s.n. de Ciudad Universitaria, Coyoacán, Mexico City, DIF, 04510, Mexico
2 - Universidad Nacional Autónoma De México, Botánica, Circuito Zona Deportiva Sn De Ciudad Universitaria, Ciudad De Mexico, DIF, 04510, Mexico


Presentation Type: Poster
Session: P1, Development and Structure Posters
Location: Virtual/Virtual
Date: Monday, July 19th, 2021
Time: 5:00 PM(EDT)
Number: P1DS005
Abstract ID:422
Candidate for Awards:Developmental and Structural Section best poster,Developmental and Structural Section Undergraduate Student Registration Award

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