Impact of fungicides on the diversity and function of non-target ammonia-oxidizing microorganisms residing in a litter soil cover.

Microbial Ecology
Edoardo PuglisiMarco Trevisan

Abstract

Litter soil cover constitutes an important micro-ecosystem in sustainable viticulture having a key role in nutrient cycling and serving as a habitat of complex microbial communities. Ammonia-oxidizing bacteria (AOB) and archaea (AOA) are known to regulate nitrification in soil while little is known regarding their function and diversity in litter. We investigated the effects of two fungicides, penconazole and cyprodinil, commonly used in vineyards, on the function and diversity of total and active AOB and AOA in a microcosm study. Functional changes measured via potential nitrification and structural changes assessed via denaturating gradient gel electrophoresis (DGGE) at the DNA and RNA levels were contrasted with pesticide dissipation in the litter layer. The latter was inversely correlated with potential nitrification, which was temporarily inhibited at the initial sampling dates (0 to 21 days) when nearly 100 % of the applied pesticide amounts was still present in the litter. Fungicides induced changes in AOB and AOA communities with RNA-DGGE analysis showing a higher sensitivity. AOA were more responsive to pesticide application compared to AOB. Potential nitrification was less sensitive to the fungicides and was restored ...Continue Reading

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Citations

Sep 12, 2012·Environmental Science and Pollution Research International·Maria MarinozziCostantino Vischetti
Oct 16, 2013·Environmental Science & Technology·Ankie SterkAna Maria de Roda Husman
Jun 19, 2013·Environmental Science and Pollution Research International·Qingwei GuoShuguang Xie
Jul 1, 2015·Environmental Science and Pollution Research International·Olivier CrouzetClarisse Mallet
Jul 3, 2013·Toxicology in Vitro : an International Journal Published in Association with BIBRA·Stefania PerdichizziAnnamaria Colacci
Mar 18, 2017·Environmental Science and Pollution Research International·Manyun ZhangZhihong Xu
Jun 22, 2018·Scientific Reports·Maximilian HendgenHarald Kellner
Oct 6, 2020·Frontiers in Microbiology·Costantino VischettiEdoardo Puglisi

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