J 2024

Bark structure is coordinated with xylem hydraulic properties in branches of five Cupressaceae species

JUPA, Radek; Julieta A ROSELL a Jarmila PITTERMANN

Základní údaje

Originální název

Bark structure is coordinated with xylem hydraulic properties in branches of five Cupressaceae species

Autoři

JUPA, Radek; Julieta A ROSELL a Jarmila PITTERMANN

Vydání

Plant Cell and Environment, Wiley, 2024, 0140-7791

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10613 Zoology

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 6.300

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/24:00138610

Organizační jednotka

Přírodovědecká fakulta

EID Scopus

Klíčová slova anglicky

bark anatomy; branch; conifer; cortex; embolism; periderm; phloem; xylem efficiency; xylem safety

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 24. 1. 2025 13:19, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

The properties of bark and xylem contribute to tree growth and survival under drought and other types of stress conditions. However, little is known about the functional coordination of the xylem and bark despite the influence of selection on both structures in response to drought. To this end, we examined relationships between proportions of bark components (i.e. thicknesses of tissues outside the vascular cambium) and xylem transport properties in juvenile branches of five Cupressaceae species, focusing on transport efficiency and safety from hydraulic failure via drought-induced embolism. Both xylem efficiency and safety were correlated with multiple bark traits, suggesting that xylem transport and bark properties are coordinated. Specifically, xylem transport efficiency was greater in species with thicker secondary phloem, greater phloem-to-xylem thickness ratio and phloem-to-xylem cell number ratio. In contrast, species with thicker bark, living cortex and dead bark tissues were more resistant to embolism. Thicker phellem layers were associated with lower embolism resistance. Results of this study point to an important connection between xylem transport efficiency and phloem characteristics, which are shaped by the activity of vascular cambium. The link between bark and embolism resistance affirms the importance of both tissues to drought tolerance.