Home About Browse Search
Svenska


Environmentally relevant fungicide levels modify fungal community composition and interactions but not functioning

Baudy, Patrick and Zubrod, Jochen P. and Konschak, Marco and Roeder, Nina and Nguyen, Thu Huyen and Schreiner, Verena C. and Baschien, Christiane and Schulz, Ralf and Bundschuh, Mirco (2021). Environmentally relevant fungicide levels modify fungal community composition and interactions but not functioning. Environmental Pollution. 285 , 117234
[Research article]

[img] PDF
597kB

Abstract

Aquatic hyphomycetes (AHs), a group of saprotrophic fungi adapted to submerged leaf litter, play key functional roles in stream ecosystems as decomposers and food source for higher trophic levels. Fungicides, controlling fungal pathogens, target evolutionary conserved molecular processes in fungi and contaminate streams via their use in agricultural and urban landscapes. Thus fungicides pose a risk to AHs and the functions they provide. To investigate the impacts of fungicide exposure on the composition and functioning of AH communities, we exposed four AH species in monocultures and mixed cultures to increasing fungicide concentrations (0, 5, 50, 500, and 2500 mg/L). We assessed the biomass of each species via quantitative real-time PCR. Moreover, leaf decomposition was investigated. In monocultures, none of the species was affected at environmentally relevant fungicide levels (5 and 50 mg/L). The two most tolerant species were able to colonize and decompose leaves even at very high fungicide levels (>= 500 mg/L), although less efficiently. In mixed cultures, changes in leaf decomposition reflected the response pattern of the species most tolerant in monocultures. Accordingly, the decomposition process may be safeguarded by tolerant species in combination with functional redundancy. In all fungicide treatments, however, sensitive species were displaced and interactions between fungi changed from complementarity to competition. As AH community composition determines leaves' nutritional quality for consumers, the data suggest that fungicide exposures rather induce bottom-up effects in food webs than impairments in leaf decomposition. (C) 2021 The Author(s). Published by Elsevier Ltd.

Authors/Creators:Baudy, Patrick and Zubrod, Jochen P. and Konschak, Marco and Roeder, Nina and Nguyen, Thu Huyen and Schreiner, Verena C. and Baschien, Christiane and Schulz, Ralf and Bundschuh, Mirco
Title:Environmentally relevant fungicide levels modify fungal community composition and interactions but not functioning
Series Name/Journal:Environmental Pollution
Year of publishing :2021
Volume:285
Article number:117234
Number of Pages:11
Publisher:ELSEVIER SCI LTD
ISSN:0269-7491
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
Keywords:Biodiversity-ecosystem functioning, Diversity effects, Leaf litter decomposition, DMI fungicides, Strobilurins
URN:NBN:urn:nbn:se:slu:epsilon-p-113444
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113444
Additional ID:
Type of IDID
DOI10.1016/j.envpol.2021.117234
Web of Science (WoS)000685347100002
ID Code:25274
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:08 Sep 2021 11:25
Metadata Last Modified:08 Sep 2021 11:31

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits