Ion-mediated increases in xylem hydraulic conductivity: seasonal differences between coexisting ring- and diffuse-porous temperate tree species
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00112366" target="_blank" >RIV/00216224:14310/19:00112366 - isvavai.cz</a>
Result on the web
<a href="https://academic.oup.com/treephys/article-abstract/39/8/1313/5425283?redirectedFrom=fulltext" target="_blank" >https://academic.oup.com/treephys/article-abstract/39/8/1313/5425283?redirectedFrom=fulltext</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/treephys/tpz035" target="_blank" >10.1093/treephys/tpz035</a>
Alternative languages
Result language
angličtina
Original language name
Ion-mediated increases in xylem hydraulic conductivity: seasonal differences between coexisting ring- and diffuse-porous temperate tree species
Original language description
Ion-mediated changes in hydraulic conductivity (Delta K-h) represent a mechanism allowing plants to regulate the rate of xylem transport. However, the significance of Delta K-h for ring-porous (RPS) and diffuse-porous tree species (DPS) remains unknown. Here, we examined Delta K-h in young branches of three coexisting, temperate RPS (Fraxinus excelsior, Quercus robur, Robinia pseudoacacia) and three DPS (Acer pseudoplatanus, Carpinus betulus, Fagus sylvatica) across the whole year, and assessed the relationships of Delta K-h to branch anatomy. Ring-porous species exhibited twice as high Delta K-h (10.3% vs 5.3%) within the growing season (i.e., during wood production) compared with DPS, and the production of the annual ring was identified as a crucial process affecting maximum Delta K-h within the season. In addition, xylem in branches of RPS generally contained more axial parenchyma (AP; 18% vs 7%) and was characterized by a greater relative contact fraction between vessels and parenchyma (FVP; 59% vs 18%) than xylem in DPS. Simultaneously, Delta K-h measured within the growing season was positively correlated with AP, FVP and bark proportions, suggesting that parenchyma in branches may be important for high Delta K-h. Significant increase in Delta K-h observed during the growing season may help RPS to restore conductive capacity after winter, better compensate transport loss by drought-induced embolism and thereby improve water delivery to leaves.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Tree physiology
ISSN
0829-318X
e-ISSN
1758-4469
Volume of the periodical
39
Issue of the periodical within the volume
8
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
1313-1328
UT code for WoS article
000493055600005
EID of the result in the Scopus database
2-s2.0-85071700578