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Disease influences host population growth rates in a natural wild plant-pathogen association over a 30-year period

Zhan, Jiasui and Ericson, Lars and Gonzalez, Jose and Burdon, Jeremy J. (2022). Disease influences host population growth rates in a natural wild plant-pathogen association over a 30-year period. Journal of Ecology. 110 , 173-184
[Research article]

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Abstract

1. The epidemiological and demographic dynamics of plant-pathogen interactions in natural environments are strongly affected by spatial and temporal influences. Here we assess the interaction between Filipendula ulmaria and its rust pathogen Triphragmium ulmariae by analysing a 30-year long dataset that has followed pathogen and plant population dynamics in a metapopulation of similar to 230 host patches growing on islands of the Skeppsvik archipelago in northern Sweden.2. Over this period, the host metapopulation initially expanded in both number and size of individual patches before plateauing. In contrast, the pathogen metapopulation showed greater change. Disease incidence showed a convex pattern rising for the first decade before showing a marked decline in the last decade. At the same time, the prevalence of disease in infected populations showed a constant 30-year long decline.3. At the individual host population level, each population was annually classified into one of four inter-year states: healthy, recolonization, extinction and diseased. Host populations that were healthy from 1 year to the next were significantly smaller than all other host population categories, while host populations in which disease was constantly present were significantly larger.4. Host populations in which the pathogen underwent either an extinction or a recolonization event were of similar size and represented a measure of the host threshold size for long-term pathogen survival.5. Host population growth rates declined as disease levels increased. The growth rate of host populations in which disease was continuously present was 75% lower than in populations that were free disease.6. The sensitivity of the association to climate change as demonstrated through a decline in disease incidence and prevalence and an increase in drought damage to plant populations as temperatures rise has only become apparent through analysis of an extensive long-term dataset.7. Synthesis. To date wild plant-pathogen studies have focused on the epidemiology of the pathogen and its effect on individual plant fitness. Here we have established a link to the impact of the pathogen on the long-term dynamics of host populations. This has the potential to trigger a cascade of changes in the species composition and diversity of communities.

Authors/Creators:Zhan, Jiasui and Ericson, Lars and Gonzalez, Jose and Burdon, Jeremy J.
Title:Disease influences host population growth rates in a natural wild plant-pathogen association over a 30-year period
Series Name/Journal:Journal of Ecology
Year of publishing :2022
Volume:110
Page range:173-184
Number of Pages:12
Publisher:WILEY
ISSN:0022-0477
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Microbiology (Microbiology in the medical area to be 30109)
Keywords:climate, epidemiology, extinction, host population growth rate, metapopulation, plant-pathogen interaction, recolonization
URN:NBN:urn:nbn:se:slu:epsilon-p-114299
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114299
Additional ID:
Type of IDID
DOI10.1111/1365-2745.13794
Web of Science (WoS)000711455200001
ID Code:26807
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Deposited By: SLUpub Connector
Deposited On:24 Jan 2022 05:25
Metadata Last Modified:24 Jan 2022 06:01

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