Response of Alnus glutinosa to Phytophthora bark infections at ambient and elevated CO2 levels

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F24%3A100492" target="_blank" >RIV/60460709:41320/24:100492 - isvavai.cz</a>

Alternative codes found

RIV/62156489:43410/24:43925206

Result on the web

<a href="http://dx.doi.org/10.3389/ffgc.2024.1379791" target="_blank" >http://dx.doi.org/10.3389/ffgc.2024.1379791</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/ffgc.2024.1379791" target="_blank" >10.3389/ffgc.2024.1379791</a>

Result language

angličtina

Original language name

Response of Alnus glutinosa to Phytophthora bark infections at ambient and elevated CO2 levels

Original language description

Introduction: Mortality of the riparian alder population caused by Phytophthora pathogens has been studied for over 20 years throughout Europe, recently gaining more importance in the context of evident climate change. The main objective of this study was to examine the pathogenicity of species from the Phytophthora alni complex present in the Czech Republic (P. x alni and P. uniformis) and P. plurivora to Alnus glutinosa seedlings grown at ambient and elevated CO2 concentration. Methods: An underbark inoculation test was performed with seedlings grown from seeds collected from two Czech alder populations, one suffering from severe Phytophthora decline and the other disease-free. Results: The results showed significant differences in lesion development and seedling mortality. After a 13-week experimental period, at both CO2 levels P. x alni and P. uniformis showed high aggressiveness to A. glutinosa seedlings causing lesions of variable sizes and mortality of 33.3%, and 45.8% of plants, respectively. In contrast, P. plurivora did not cause mortality to any plant, and lesion sizes did not differ significantly from those in control plants. Physiological measurements did not reveal any significant differences between Phytophthora species except for plants inoculated with P. plurivora showing increased values in specific physiological parameters 4 weeks post-inoculation. Net photosynthesis decreased over the measurement period in all treatments with significant differences found between measurements conducted 2 and 4 weeks after the inoculation. Transpiration showed a decreasing trend in all inoculated plants with no significant differences between Phytophthora species at both CO2 levels. Chemical analyses of root samples showed high variability in sugars and phenolic compounds related to the plant's health status. Discussion: This is the first study to examine the response of alder seedlings to Phytophthora pathogens at different CO2 levels. The findings demonstrate high aggressiveness of P. x alni and P. uniformis and weaker aggressiveness of P. plurivora to alder seedlings regardless of the CO2 level.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40100 - Agriculture, Forestry, and Fisheries

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

FRONTIERS IN FORESTS AND GLOBAL CHANGE

ISSN

2624-893X

e-ISSN

2624-893X

Volume of the periodical

7

Issue of the periodical within the volume

18.0

Country of publishing house

CH - SWITZERLAND

Number of pages

18

Pages from-to

1-18

UT code for WoS article

001211494200001

EID of the result in the Scopus database

2-s2.0-85191809768