Cargando…

Divergence of stem biomechanics and hydraulics between Bauhinia lianas and trees

Liana abundance and biomass are increasing in neotropical and Asian tropical seasonal forests over the past decades. Stem mechanical properties and hydraulic traits influence the growth and survival of plants, yet the differences in stem mechanical and hydraulic performance between congeneric lianas...

Descripción completa

Detalles Bibliográficos
Autores principales: Xiao, Yan, Song, Yu, Wu, Fu-Chuan, Zhang, Shu-Bin, Zhang, Jiao-Lin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8114228/
https://www.ncbi.nlm.nih.gov/pubmed/34007437
http://dx.doi.org/10.1093/aobpla/plab016
_version_ 1783691018925768704
author Xiao, Yan
Song, Yu
Wu, Fu-Chuan
Zhang, Shu-Bin
Zhang, Jiao-Lin
author_facet Xiao, Yan
Song, Yu
Wu, Fu-Chuan
Zhang, Shu-Bin
Zhang, Jiao-Lin
author_sort Xiao, Yan
collection PubMed
description Liana abundance and biomass are increasing in neotropical and Asian tropical seasonal forests over the past decades. Stem mechanical properties and hydraulic traits influence the growth and survival of plants, yet the differences in stem mechanical and hydraulic performance between congeneric lianas and trees remain poorly understood. Here, we measured 11 stem mechanical and hydraulic traits for 10 liana species and 10 tree species from Bauhinia grown in a tropical common garden. Our results showed that Bauhinia lianas possessed lower stem mechanical strength as indicated by both modulus of elasticity and modulus of rupture, and higher stem potential hydraulic conductivity than congeneric trees. Such divergence was mainly attributed to the differentiation in liana and tree life forms. Whether the phylogenetic effect was considered or not, mechanical strength was positively correlated with wood density, vessel conduit wall reinforcement and sapwood content across species. Results of principle component analysis showed that traits related to mechanical safety and hydraulic efficiency were loaded in the opposite direction, suggesting a trade-off between biomechanics and hydraulics. Our results provide evidence for obvious differentiation in mechanical demand and hydraulic efficiency between congeneric lianas and trees.
format Online
Article
Text
id pubmed-8114228
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Oxford University Press
record_format MEDLINE/PubMed
spelling pubmed-81142282021-05-17 Divergence of stem biomechanics and hydraulics between Bauhinia lianas and trees Xiao, Yan Song, Yu Wu, Fu-Chuan Zhang, Shu-Bin Zhang, Jiao-Lin AoB Plants Studies Liana abundance and biomass are increasing in neotropical and Asian tropical seasonal forests over the past decades. Stem mechanical properties and hydraulic traits influence the growth and survival of plants, yet the differences in stem mechanical and hydraulic performance between congeneric lianas and trees remain poorly understood. Here, we measured 11 stem mechanical and hydraulic traits for 10 liana species and 10 tree species from Bauhinia grown in a tropical common garden. Our results showed that Bauhinia lianas possessed lower stem mechanical strength as indicated by both modulus of elasticity and modulus of rupture, and higher stem potential hydraulic conductivity than congeneric trees. Such divergence was mainly attributed to the differentiation in liana and tree life forms. Whether the phylogenetic effect was considered or not, mechanical strength was positively correlated with wood density, vessel conduit wall reinforcement and sapwood content across species. Results of principle component analysis showed that traits related to mechanical safety and hydraulic efficiency were loaded in the opposite direction, suggesting a trade-off between biomechanics and hydraulics. Our results provide evidence for obvious differentiation in mechanical demand and hydraulic efficiency between congeneric lianas and trees. Oxford University Press 2021-04-08 /pmc/articles/PMC8114228/ /pubmed/34007437 http://dx.doi.org/10.1093/aobpla/plab016 Text en © The Author(s) 2021. Published by Oxford University Press on behalf of the Annals of Botany Company. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Studies
Xiao, Yan
Song, Yu
Wu, Fu-Chuan
Zhang, Shu-Bin
Zhang, Jiao-Lin
Divergence of stem biomechanics and hydraulics between Bauhinia lianas and trees
title Divergence of stem biomechanics and hydraulics between Bauhinia lianas and trees
title_full Divergence of stem biomechanics and hydraulics between Bauhinia lianas and trees
title_fullStr Divergence of stem biomechanics and hydraulics between Bauhinia lianas and trees
title_full_unstemmed Divergence of stem biomechanics and hydraulics between Bauhinia lianas and trees
title_short Divergence of stem biomechanics and hydraulics between Bauhinia lianas and trees
title_sort divergence of stem biomechanics and hydraulics between bauhinia lianas and trees
topic Studies
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8114228/
https://www.ncbi.nlm.nih.gov/pubmed/34007437
http://dx.doi.org/10.1093/aobpla/plab016
work_keys_str_mv AT xiaoyan divergenceofstembiomechanicsandhydraulicsbetweenbauhinialianasandtrees
AT songyu divergenceofstembiomechanicsandhydraulicsbetweenbauhinialianasandtrees
AT wufuchuan divergenceofstembiomechanicsandhydraulicsbetweenbauhinialianasandtrees
AT zhangshubin divergenceofstembiomechanicsandhydraulicsbetweenbauhinialianasandtrees
AT zhangjiaolin divergenceofstembiomechanicsandhydraulicsbetweenbauhinialianasandtrees