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Abstract Detail

Development and Structure

Pace, Marcelo [1], Terrazas, Teresa [2], L. Cunha Neto, Israel [3], Chery, Joyce [4], Gerolamo, Caian [5], angyalossy, Veronica [6].

Overview on the wood anatomy of Sapindales, possible synapomorphies and character evolution.

The order Sapindales is composed of 6 main woody families: Anacardiaceae, Burseraceae, Meliaceae, Rutaceae, Sapindaceae, and Simaroubaceae. Members of this lineage are trees, shrubs, lianas, and herbs that are widespread throughout tropical and temperate regions. In this overview, we explore the wood anatomical features that define the order and each family. Additionally, we trace the character history of key anatomical features via ancestral state estimation methods. Sapindales as a whole have vessels with simple perforation plates, alternate non-vestured pits, fibers with minute pits, axial parenchyma either scanty paratracheal to vasicentric or aliform. The ancestral wood of the Sapindales is reconstructed as having marginal parenchyma delimiting the growth rings (lost in Anacardiaceae and Burseraceae), scanty paratracheal parenchyma, heterocellular 2-3 cell wide rays, and septate fibers (lost in Rutaceae and Simaroubaceae). Silica appeared in sparse members of Anacardiaceae, Burseraceae, Simaroubaceae, and Sapindaceae. Radial canals are present in Anacardiaceae and Burseraceae, and tyloses are exclusive to Anacardiaceae and a some Burseraceae. Traumatic canals are a common response to injury in Rutaceae, Meliceae and Simarouaceae. Storied structures and radially arranged vessels appeared to have evolved multiple times independently. This study is the first attempt to unravel the evolution of wood anatomical characters in this large angiosperm order using a robust phylogenetic tree and phylogenetic comparative methods.

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1 - Universidad Nacional Autonoma de Mexico, Botany Department, Circuito Zona Deportiva sn, Mexico City, DF, 06700, Mexico
2 - Boise State University, Snake River Plains Herbaria, , Boise, Idaho, 83725, USA
3 - University Of Sao Paulo, Departamento De Botanica, Rua Do Matao, 277, Instituto De Biociencias, Cidade Universitaria, São Paulo, SP, 05508-090, Brazil
4 - Cornell University, School of Integrative Plant Sciences, Section of Plant Biology and the L.H. Bailey Hortorium, 410 Mann Library, Ithaca, NY, 14850, United States
5 - Universidade Of Sao Paulo, Department Botany, Rua Do Matao, 277, Instituto De Biociencias, São Paulo, SP, 05508090, Brazil
6 - Universidade De São Paulo, Botany, Rua Do Matao 277, Sao Paulo, SP, 05508-090, Brazil


Presentation Type: Oral Paper
Session: DS3, Development and Structure III
Location: /
Date: Thursday, July 22nd, 2021
Time: 11:15 AM(EDT)
Number: DS3006
Abstract ID:683
Candidate for Awards:None

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