Magdalena Nagler- Doctor of Philosophy
- Senior Researcher at Eurac Research
Magdalena Nagler
- Doctor of Philosophy
- Senior Researcher at Eurac Research
Marie-Curie Fellow @Eurac Research, Bolzano.
About
42
Publications
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738
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Introduction
Current institution
Additional affiliations
June 2019 - present
Publications
Publications (42)
This is the protocol for the standard, nutrient-rich, undefined cultivation medium without clarified rumen fluid (CRF) used within the HiPoAF project.
In previous publications this medium or slight variations of it have also been referred to as "defined medium" (since it does not contain CRF) - this, however, is not completely true, since it does...
Despite their role in host nutrition, the anaerobic gut fungal (AGF) component of the herbivorous gut microbiome remains poorly characterized. Here, to examine global patterns and determinants of AGF diversity, we generate and analyze an amplicon dataset from 661 fecal samples from 34 mammalian species, 9 families, and 6 continents. We identify 56...
The tiger flatworm Prostheceraeus crozieri (Polycladida) develops via an eight-lobed, and three-eyed planktonic Müller's larva. This larva has an apical organ, ultrastructural details of which remain elusive due to a scarcity of studies. The evolution and possible homology of the polyclad larva with other spiralian larvae is still controversial. He...
In spite of their indispensable role in host nutrition, the anaerobic gut fungal (AGF) component of the herbivorous gut microbiome remains poorly characterized. To examine global patterns and determinants of AGF diversity, we generated and analyzed an amplicon dataset from 661 fecal samples from 34 animal species, 9 families, and 6 continents. We i...
In spite of their indispensable role in host nutrition, the anaerobic gut fungal (AGF) component of the herbivorous gut microbiome remains poorly characterized. To examine global patterns and determinants of AGF diversity, we generated and analyzed an amplicon dataset from 661 fecal samples from 34 animal species, 9 families, and 6 continents. We i...
Anaerobic fungi (AF, phylum Neocallimastigomycota) are best known for their ability to anaerobically degrade recalcitrant lignocellulosic biomass through mechanic and enzymatic means. While their biotechnological potential is well-recognized, applied research on AF is still hampered by the time-consuming and cost-intensive laboratory routines requi...
Storage of woody biomass in large wood chip piles is unavoidable for biotechnological applications, but comes along with considerable biomass-, energy- and thus, economic losses due to exothermic reactions and microbial degradation. The homogeneous amendment of the storage piles with an alkaline stabilization agent, calcium hydroxide (Ca(OH)2), was...
The analysis of environmental DNA (eDNA) is revolutionizing the monitoring of biodiversity as it allows to assess organismic diversity at large scale and unprecedented taxonomic detail. However, eDNA consists of an extracellular and intracellular fraction, each characterized by particular properties that determine the retrievable information on whe...
Background
Onychomycosis is defined as infection caused by nondermatophytic molds and yeasts: tinea unguium is caused by dermatophytes. Purpose: Within this study, hydroxyethyl cellulose (HEC) as an important non-ionic, water-soluble cellulose derivative was chosen to develop formulations containing tea tree oil as active antifungal agent were deve...
Microorganisms, like bacteria and fungi, are becoming an emerging resource for the development of eco-sustainable plastic degradation and recycling processes. In this study, the rumen content from cattle (Bos taurus) was investigated regarding synthetic polyester hydrolyzing enzymes based on the fact that the diet of ruminants may contain natural p...
Globally, inland waters emit over 2 Pg of carbon per year as carbon dioxide, of which the majority originates from streams and rivers. Despite the global significance of fluvial carbon dioxide emissions, little is known about their diel dynamics. Here we present a large-scale assessment of day- and night-time carbon dioxide fluxes at the water-air...
High biodiversity is a prerequisite for the integrity, stability, and functioning of global aquatic ecosystems, but it is currently subject to anthropogenic threats. Small freshwater bodies with high habitat diversity are essential to sustain regional biodiversity, but species inventory and biodiversity are largely overlooked, especially in mountai...
Aim: Although running waters are getting recognized as important methane sources, large‐scale geographical patterns of microorganisms controlling the net methane balance of streams are still unknown. Here we aim at describing community compositions of methanogenic and methanotrophic microorganisms at large spatial scales and at linking their abunda...
Most commonly, NGS‐based microbiome studies are performed on the total DNA (totDNA) pool that, however, consists of extracellular‐ (exDNA) and intracellular (iDNA) DNA fractions.
By investigating the microbiomes of different anaerobic digesters over time, we found that totDNA suggested lower species richness considering all and/or only common speci...
The anaerobic gut fungi (Neocallimastigomycota), first described almost 50 years ago, hold extraordinary potential for biotechnology. Anaerobic fungi could contribute to bioenergy and bio-based chemical production via their ability to degrade lignocellulose, may enhance animal health and production, and are now being revealed to have interesting bi...
Although being a common aim of many microbial ecology studies, measuring individual physiological conditions of a microbial group or species within a complex consortium is still a challenge. Here, we propose a novel approach that is based on the quantification of sequentially extracted extracellular (exDNA) and intracellular DNA (iDNA) and reveals...
Background: Globally, streams emit significant amounts of methane, a highly potent greenhouse gas. However, little is known about the stream sediment microbial communities that control the net methane balance in these systems, and in particular about their distribution and composition at large spatial scales. This study investigated the diversity a...
Background
Pesticide levels are generally monitored within agricultural areas, but are commonly not assessed at public places. To assess possible contamination of non-target areas, 71 public playgrounds located next to intensively managed apple and wine orchards were selected in four valleys of South Tyrol (northern Italy). Further, the impact of e...
In biogas plants, lignocellulose-rich biomass (LCB) is particularly slowly degraded, causing high hydraulic retention times. This fact lowers the interests for such substrates. To enhance LCB-degradation, cattle rumen fluid, a highly active microbial resource accruing in the growing meat industry, might be used as a potential source for bioaugmenta...
Extracellular DNA (exDNA) is abundant in many habitats, including soil, sediments, oceans and freshwater as well as the intercellular milieu of metazoa. For a long time, its origin has been assumed to be mainly lysed cells. Nowadays, research is collecting evidence that exDNA is often secreted actively and is used to perform a number of tasks, ther...
Large-scale studies are needed to identify the drivers of total mercury (THg) and monomethyl-mercury (MeHg) concentrations in aquatic ecosystems. Studies attempting to link dissolved organic matter (DOM) to levels of THg or MeHg are few and geographically constrained. Additionally, stream and river systems have been understudied as compared to lake...
The ubiquity and relevance of extracellular DNA (exDNA) are well-known and increasingly gaining importance in many fields of application such as medicine and environmental microbiology. Although sources and types of exDNA are manifold, ratios of specific DNA-molecules inside and outside of living cells can give reliable information about the activi...
Glacial retreat areas offer an excellent opportunity for microbial ecologists to study ecological theories. The place of this study was the glacier retreat area of Iztaccíhuatl volcano in México (19.02°N, 98.62°W). Sampling took place at eleven different sites along the retreat area in 2008 and 2009. Soil samples (200 g each) were frozen, and air-s...
Waste-activated sludge (WAS) may be considered a resource generated by wastewater treatment plants and used for biogas-generation but it requires pre-treatment (PT) for enhanced biogas-yields and reduced WAS disposal costs. To date, a number of studies on the optimization of such PT focused on improved biogas yields but neglected inferred energy an...
Biogas from organic residues is a sound and environmental friendly fuel but when it comes to lignocellulose-rich biomass (LCB) degradation, a large part of the inherent energy stays unused or impedes the overall anaerobic process. The rumen of cattle contains a variety of microorganisms and highly potent enzymes enabling the hosts to thrive on LCB....
The bovine rumen is a complex habitat with a diverse microbiota, composed of bacteria, archaea, anaerobic fungi and protists. Only the microbial co-evolution with ruminants enables their host to degrade lignoellulosic biomass (LCB). The effect of rumen liquid addition to biogas reactors with respect to biogas yield and LCB degradation efficiency wa...
The purpose of the present study is not solely scientific but arose from a rare fusion of art and science during a venturesome bicycle trip from Austria (Europe) to Laos (Asia). The artist Wolfgang Burtscher produced every-day dirt tire imprints on papers (tripmarks) to document his journey (www.tripmarks.at) Contributing to public awareness in thi...
Larch (Larix decidua) grasslands represent a traditional agro-forest system in the montane and subalpine
belts of the European Alps, combining fodder and timber production. Due to socio-economic reasons,
large parts of those dual-purpose grasslands have either been abandoned or intensified over the last
60 years. While their associated benefits suc...
Biogas is an environmental-friendly fuel and representing an expanding field in the renewable energy sector. However, biogas yields vary with the used co-substrate; while some co-substrates, e.g. biowaste, are readily used by the microbiome, more complex materials such as cellulose-rich fibres are not fully degradable and require a treatment prior...
Microbial biogeography has long been and is still influenced by the hypothesis of a microbial cosmopolitanism meaning that everything is everywhere, but, the environment selects. A number of studies were able to confirm the existence of globally occurring species. However, a general cosmopolitanism of microorganisms is arguable taking into account...
Questions
Questions (4)
During my literature research, I learned that it is possible to initially place nMDS objects according to geographic distances if the objects (rows) in the data set represent sites vwhich are geographically separated. This may help the NMDS algorithm to achieve good results.
Do you know of any R-script or other program that allows to do this particular step?
I am unsure if to use the mentioned kit, as it is not well known but includes the same main steps as sophisticated kits and is in the same time much more convenient. Could you please share your experiences with this kit ?
I am doing a biological methane potential test and want to determine the chemical oxygen demand before/after fermentation. The standard method I am using is the macherey nagel nanocolor CSB 1500 but it is only accounting for the solube COD and not for the COD of the solid particles (except for the fraction being solubilized during the hetaing step). Does anyone know a reliable method to measure the total COD for such samples?
I am doing a biological methane potential test and want to determine the chemical oxygen demand of the substrate amended with maize straw before / after the fermentation. The standard method I am using is the macherey nagel nanocolor CSB 1500. However, this method is only accounting for the soluble, but not the solid phase. Does anyone know a reliable method to determine the total COD of such samples?
