Structural adaptations in plants from the humid equatorial Andes indicate a trade-off between hydraulic transport efficiency and safety

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10438255" target="_blank" >RIV/00216208:11310/21:10438255 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=yFlCu_6Qs" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=yFlCu_6Qs</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ajb2.1799" target="_blank" >10.1002/ajb2.1799</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structural adaptations in plants from the humid equatorial Andes indicate a trade-off between hydraulic transport efficiency and safety

Popis výsledku v původním jazyce

Premise Environmental gradients of mountains are reflected in traits that are common to high-elevation plants worldwide. Closely related species of Senecio from the equatorial Andes grow as broad-leaved climbers in montane forests, basal broad-leaved rosette herbs in azonal marshy habitats, and ascending, narrow-leaved subshrubs in high-elevation paramo. Habitat variation along the elevational gradient enables testing whether modifications in leaf and stem functional traits among species were driven by contrasting environmental conditions. Methods We used quantitative analyses to describe changes in morphological and anatomical traits of leaves and stems in 10 species from various habitats. We applied univariate (linear regression, hierarchical ANOVA) and multivariate (NMDS ordination, permutational MANOVA) techniques to examine the correlation of traits with the species&apos; habitats and elevation. Results Species from the humid and frost-free montane forest develop xylem optimized for transport efficiency by increasing the internal diameter and length of the conduits. In contrast, paramo species are optimized toward hydraulic safety by producing narrower conduits and are more likely to prevent the risk of frost-induced cavitation. Moreover, species from the high-elevation paramo habitats present a set of water-transport-related anatomical traits of leaf lamina, allowing for efficient regulation of transpiration losses. Conclusions Morphological and anatomical traits of leaves and stems in species of Senecio inhabiting montane forests and high-elevation paramo in the equatorial Andes demonstrate a trade-off between hydraulic safety and efficiency of water transport.

Název v anglickém jazyce

Structural adaptations in plants from the humid equatorial Andes indicate a trade-off between hydraulic transport efficiency and safety

Popis výsledku anglicky

Premise Environmental gradients of mountains are reflected in traits that are common to high-elevation plants worldwide. Closely related species of Senecio from the equatorial Andes grow as broad-leaved climbers in montane forests, basal broad-leaved rosette herbs in azonal marshy habitats, and ascending, narrow-leaved subshrubs in high-elevation paramo. Habitat variation along the elevational gradient enables testing whether modifications in leaf and stem functional traits among species were driven by contrasting environmental conditions. Methods We used quantitative analyses to describe changes in morphological and anatomical traits of leaves and stems in 10 species from various habitats. We applied univariate (linear regression, hierarchical ANOVA) and multivariate (NMDS ordination, permutational MANOVA) techniques to examine the correlation of traits with the species&apos; habitats and elevation. Results Species from the humid and frost-free montane forest develop xylem optimized for transport efficiency by increasing the internal diameter and length of the conduits. In contrast, paramo species are optimized toward hydraulic safety by producing narrower conduits and are more likely to prevent the risk of frost-induced cavitation. Moreover, species from the high-elevation paramo habitats present a set of water-transport-related anatomical traits of leaf lamina, allowing for efficient regulation of transpiration losses. Conclusions Morphological and anatomical traits of leaves and stems in species of Senecio inhabiting montane forests and high-elevation paramo in the equatorial Andes demonstrate a trade-off between hydraulic safety and efficiency of water transport.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

American Journal of Botany

ISSN

0002-9122

e-ISSN

—

Svazek periodika

108

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

2127-2142

Kód UT WoS článku

000719441400001

EID výsledku v databázi Scopus

2-s2.0-85119113940