Marcel A K Jansen

Marcel A K Jansen
University College Cork | UCC · School of Biological, Earth & Environmental Sciences

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177
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Publications (177)
Article
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Given its high biomass production, phytoremediation capacity and suitability as a feedstock for animal and human nutrition, duckweeds are valuable multipurpose plants that can underpin circular economy applications. In recent years, the use of duckweeds to mitigate environmental pollution and valorise wastewaters through the removal of excess nitro...
Article
Full-text available
The authors report on the design and operation of an advanced, innovative and environmentally friendly freshwater integrated multitrophic aquaculture (IMTA) system. The novel system facilitates fish production while controlling water quality using duckweed treatment units. The basic design consists of ponds for farming of Eurasian perch and rainbow...
Article
Full-text available
Tocopherols are lipophilic antioxidants in plants. Their potential role in protecting UV-B exposed plants has been alluded to, but not shown. Here we have determined UV-B induced accumulation of tocopherol in the model plant Arabidopsis thaliana and asked 1) whether induction relies on UV-B application duration, 2) if UV (UVR8) or blue light (photo...
Technical Report
Full-text available
The aim of the Newtrients project was to develop an innovative exemplar of a circular economy approach to the production of novel, value-added products from dairy industry wastewater. This was successfully achieved. Newtrients has shown that compostable bioplastics can be generated from dairy waste, rather than from fossil fuels. In addition, it wa...
Article
Full-text available
Induction of metabolite biosynthesis and accumulation is one of the most prominent UV-mediated changes in plants, whether during eustress (positive response) or distress (negative response). However, despite evidence suggesting multiple linkages between UV exposure and carotenoid induction in plants, there is no consensus in the literature concerni...
Article
Full-text available
The Lemnaceae (duckweed) are a family of aquatic plants which can be used as part of a circular economy approach to remediate and valorise wastewater. The suitability of duckweeds relates to their tolerance of wastewater conditions, fast growth rates and valuable biomass. Duckweed species and clones display a wide range of remediation abilities and...
Article
Microplastics are considered freshwater pollutants of emerging concern. Although microplastics have been identified in a range of taxa, only a limited number of studies have focussed on the trophic transfer of microplastics. The duckweed Lemna minor can act as a microplastic vector in a model freshwater food chain. Here we show for the first time s...
Article
Full-text available
Invasive aquatic macrophytes tend to reproduce and spread through vegetative means, often via fragmentary propagules. Dispersal among aquatic sites may occur overland via attachment to various vectors, or within river systems by directional water currents. However, for many species the relationship between fragment size and resumption of growth is...
Article
Full-text available
The aquaculture industry is considered a key sector for the supply of high quality, nutritious food. However, growth of the aquaculture sector has been slow, particularly in Europe, and this is amongst others linked to concerns about environmental impacts of this industry. Integrated Multitrophic Aquaculture (IMTA) has been identified as an importa...
Article
Full-text available
Lemnaceae, i.e., duckweed species, have gained considerable attention as a sustainable source of high-quality nutrition, biofuel, and pharmaceuticals, as well as effective organisms for phytoremediation of wastewaters. A protein content of up to 45% makes duckweed biomass nutritionally interesting as an ingredient for animal feeds or human food. Ou...
Article
Interactions between climate change and UV penetration in the biosphere are resulting in exposure of plants to new combinations of UV radiation and drought. In theory, impacts of combinations of UV and drought may be additive, synergistic or antagonistic. Lack of understanding of impacts of combined treatments creates substantial uncertainties that...
Article
Full-text available
Aquaculture is an important source of animal protein and a key contributor to global food security. However, aquaculture can exert a negative effect on the aquatic environment due to the release of effluents containing high nutrient levels. In integrated multi-trophic aquaculture (IMTA), the waste produced by one species is the input for another, r...
Article
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Invasive alien species can negatively impact on newly colonised ecosystems. Thus, it is important to understand factors that facilitate invasiveness. Genetic diversity will enable a species to exploit a variety of environmental conditions. Yet, the process of dispersal to a new ecosystem will commonly create a genetic bottleneck and, hence, result...
Article
Full-text available
The aquatic Lemnaceae family, commonly called duckweed, comprise some of the smallest and fastest growing angiosperms known on Earth. Their tiny size, rapid growth by clonal propagation, and facile uptake of labeled compounds from the media were attractive features that made them a well-known model for plant biology from 1950-1990. Interest in duck...
Article
The aquatic Lemnaceae family, commonly called duckweed, comprise some of the smallest and fastest growing angiosperms known on Earth. Their tiny size, rapid growth by clonal propagation, and facile uptake of labeled compounds from the media were attractive features that made them a well-known model for plant biology from 1950-1990. Interest in duck...
Article
Full-text available
As part of a circular economy (CE) approach to food production systems, Lemnaceae, i.e., duckweed species, can be used to remediate wastewater due to rapid nutrient assimilation and tolerance of non-optimal growing conditions. Further, given rapid growth rates and high protein content, duckweed species are a valuable biomass. An important considera...
Data
This is the valid version of the Supplementary Material
Article
Full-text available
Ultraviolet (UV)-A- or UV-B-enrichment of growth light resulted in a stocky cucumber (Cucumis sativus L.) phenotype exhibiting decreased stem and petiole lengths and leaf area. Effects were larger in plants grown in UV-B- than in UV-A-enriched light. In plants grown in UV-A-enriched light, decreases in stem and petiole lengths were similar independ...
Data
This is an old version of the Supplementary material. Use the valid version instead.
Article
Full-text available
Lemnaceae, i.e. duckweed species, are attractive for phytoremediation of wastewaters, primarily due to their rapid growth, high nutrient uptake rates, tolerance to a broad range of growing conditions and ability to expeditiously assimilate a variety of pollutants. Light is essential for plant growth, and therefore, phytoremediation. Nevertheless, t...
Article
Plastic pollution is a new, pressing, environmental topic. Microplastics are considered contaminants of emerging concern and, consequently, microplastic research has grown exponentially in the last decade. Here, current knowledge regarding the impacts of micro- and nanoplastics on terrestrial plants and aquatic macrophytes is discussed, with a spec...
Preprint
Ultraviolet (UV)-A- or UV-B-enrichment of growth light resulted in a stocky cucumber (Cucumis sativus L.) phenotype exhibiting decreased stem and petiole lengths and leaf area. Effects were larger in plants grown in UV-B- than in UV-A-enriched light. In plants grown in UV-A-enriched light, decreases in stem and petiole lengths were similar independ...
Chapter
Aim: To provide an overview of micro- and nano-sized plastic pollution of inland waters, including associated risks and hazards. Main concepts covered: Origin and distribution of micro- and nanoplastics in the freshwater environment, and potential biological impacts. Main methods covered: Protocols for monitoring of plastics in the natural environm...
Article
Full-text available
Using dill (Anethum graveolens L.) as a model herb, we reveal novel associations between metabolite profile and sensory quality, by integrating non-target metabolomics with sensory data. Low night temperatures and exposure to UV-enriched light was used to modulate plant metabolism, thereby improving sensory quality. Plant age is a crucial factor as...
Article
Full-text available
Monitoring studies have revealed the presence of large numbers of natural as well as anthropogenic microfibers, plastic and non-plastic, in environmental samples. However, the interaction of organisms with microfibers is largely understudied. This is the first ecotoxicological study that compares short-term feeding of anthropogenic plastic and non-...
Article
Full-text available
Microplastics have become ubiquitous in all environments. Yet, their environmental fate is still largely unknown. Plastic fragmentation is a key component of plastic degradation, which is mostly caused by abiotic processes over prolonged time scales. Here, it is shown that the freshwater amphipod Gammarus duebeni can rapidly fragment polyethylene m...
Article
Sustainable production of high-quality food is one of today’s major challenges of agriculture. To achieve this goal, a better understanding of plant physiological processes and a more integrated approach with respect to current agronomical practices are needed. In this review, various examples of cooperation between integrative plant physiology and...
Article
Full-text available
AimsThis study was conducted to answer the question of whether elevated CO2 and the presence or absence of inorganic nitrogen (NH4+) affect the uptake of different forms of organic nitrogen in two dominant saltmarsh species Schoenoplectus americanus and Spartina patens.MethodsS. americanus and S. patens were grown under elevated and ambient CO2 con...
Article
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Lemna sect. Uninerves Hegelm. consists of three species, Lemna minuta Kunth (synonym L. minuscula), L. valdiviana Phil. and L. yungensis Landolt. Lemna yungensis was discovered growing on rocks in the Yungas in Bolivia by E. Landolt and was described just 20 years ago. In the original description, Landolt reported that this species is closely relat...
Article
Lemnaceae are being exploited to remediate a variety of different wastewaters. Our aim was to remediate dairy processing waste, which is produced in large amounts, and contains valuable plant nutrients, for example, nitrate, ammonium, phosphate and iron. However, initial trials failed to establish the growth of Lemna minor on this medium. A lack of...
Article
Lemnaceae are being exploited to remediate a variety of different wastewaters. Our aim was to remediate dairy processing waste, which is produced in large amounts, and contains valuable plant nutrients, for example, nitrate, ammonium, phosphate and iron. However, initial trials failed to establish the growth of Lemna minor on this medium. A lack of...
Article
Ozone depletion has altered conditions at the Earth’s surface and interacts with climate change. This Review assesses the effects on humans and ecosystems, including implications for food and water security, and the mitigating and ongoing influence of the Montreal Protocol.
Article
Microplastics (1-1000 μm) are ubiquitous in the marine, freshwater and terrestrial environments. These microsized plastics are considered freshwater pollutants of emerging concern, although the impacts on organisms and ecosystems are not yet clear. In particular, effects of microplastics on freshwater aquatic plants and the fate of microplastics in...
Article
Full-text available
The functional role, relative importance, and the spatial and temporal parameters of different vector species, which underpin the passive dispersal (zoochory) of organisms (or their propagules), are frequently poorly understood. Accordingly, a conceptual framework capable of providing a rigorous and unified assessment for the dispersal capacity of...
Article
Full-text available
Plants perceive ultraviolet-B (UV-B) radiation through the UV-B photoreceptor UV RESISTANCE LOCUS 8 (UVR8), and initiate regulatory responses via associated signalling networks, gene expression and metabolic pathways. Various regulatory adaptations...
Article
Exposure of plants and animals to ultraviolet-B radiation (UV-B; 280-315 nm) is modified by stratospheric ozone dynamics and climate change. Even though stabilisation and projected recovery of stratospheric ozone is expected to curtail future increases in UV-B radiation at the Earth's surface, on-going changes in climate are increasingly exposing p...
Article
Expression of cucumber (Cucumis sativus) genes encoding the phenylpropanoid and flavonoid biosynthetic enzymes phenylalanine ammonia lyase (PAL), cinnamic acid 4-hydroxylase (C4H), and chalcone synthase (CHS), was studied under control light conditions (photosynthetically active radiation, PAR) in root, stem, and leaf. Furthermore, expression was q...
Article
This editorial is inspired by discussions that took place during a workshop held in June 2017 at the Global Change Research Institute, in Brno in the Czech Republic. The workshop was organised by Dr Otmar Urban and Prof Marcel Jansen, under the auspices of UV4Plants, the International Association for Plant UV Research (https://www.uv4plants.org/),...
Article
Full-text available
This editorial is inspired by discussions that took place during a workshop held in June 2017 at the Global Change Research Institute, in Brno in the Czech Republic. The workshop was organised by Dr Otmar Urban and Prof Marcel Jansen, under the auspices of UV4Plants, the International Association for Plant UV Research (https://www.uv4plants.org/),...
Article
It is widely assumed that environmental stressors contribute to the protection of habitats from invasion by alien species, and that native species are better stress-tolerators. This assumption was tested by comparing the performance of the invasive alien Lemna minuta Kunth with that of the co-generic native L. minor Linnaeus, under several environm...
Article
We investigated the effect of leaf ontogeny and barley genotype on the accumulation of phenolic compounds (PhCs) induced by ultraviolet (UV) and photosynthetically active radiation (PAR). We hypothesized that different groups of PhCs are induced in leaves differing in ontogeny, and that this has consequences for protective functions and the need fo...
Article
Full-text available
A substantial number of Lemnaceae are invasive outside their natural distribution area. Lemna minuta is considered invasive in several European countries, where it can occur in the same habitat as invasive Azolla filiculoides and native Lemna minor. In this study the presence, abundance and growth rates of all three species were monitored across 24...
Article
The use of wood as a sustainable biofuel results in the generation of residual wood ash. The ash contains high amounts of plant macronutrients such as phosphorus, potassium, calcium as well as several micronutrients. To explore the potential use of wood ash as a fertiliser, the growth enhancing properties of Sitka spruce (Picea sitchensis Bong.) wo...
Article
Large numbers of studies have reported on the responses of plants that are exposed to a specific dose of ultraviolet-B (UV-B) radiation. However, in the natural environment UV-B is a highly dynamic variable with UV-B intensities depending on, amongst others, geographic, temporal, weather and climatic factors. Furthermore, UV-B effects on plants can...
Article
Lemna minuta Kunth is an invasive, alien duckweed that is present throughout much of Europe, where it competes with native congeneric Lemna minor Linnaeus. Previously, L. minuta was found to grow faster than L. minor. The aim of this study was to determine whether the rapid growth of invasive L. minuta is based on differential light utilisation. Fo...
Article
Full-text available
The use of zinc oxide nanoparticles (nano-ZnO) has rapidly increased in recent years, and this has triggered the need for versatile toxicity tests that can be used to test a range of different exposure scenarios. Acute exposure studies, using a variety of plant species, have overwhelmingly demonstrated nano-ZnO-induced toxicity, but substantial dif...
Article
Because of their applications in large numbers of products, Zinc Oxide nanoparticles (nano-ZnO) will inevitably enter into the environment. Nano-ZnO released into the environment will be present in a complex matrix which can cause various chemical and physical transformations and modulate the biological reactivity of these particles. Due to their r...
Article
Full-text available
Conspecific negative density dependence in tree species can have major consequences for structuring of communities, yet in temperate forests this phenomenon remains largely unexplored. We investigated density-dependent recruitment in the long-lived conifer yew (Taxus baccata L.), for which low levels of regeneration have been linked with reduced li...
Article
Full-text available
Vectors that underpin the natural dispersal of invasive alien species are frequently unknown. In particular, the passive dispersal (zoochory) of one organism (or propagule) by another, usually more mobile animal, remains poorly understood. Field observations of the adherence of invasive freshwater bivalves to other organisms have prompted us to ass...
Article
A two-year study explored metabolic and phenotypic plasticity of sun acclimated Vitis vinifera cv. Pinot noir leaves collected from twelve locations across a 36.69oN – 49.98oN latitudinal gradient. Leaf morphological and biochemical parameters were analysed in the context of meteorological parameters and the latitudinal gradient. We found that leaf...
Article
UVB radiation is biologically active; in plants, it can induce a range of molecular, biochemical, morphological and developmental responses. Although much progress has been made in elucidating UVB perception and signalling pathways under controlled laboratory conditions, understanding of the adaptive, ecological role of UVB responses is still very...
Article
Developmental age is an important determinant of plant stress responses. In this study the importance of “within-individual-heterogeneity” of developmental age for plant UV-B responses was quantified. Arabidopsis thaliana rosettes were raised under indoor conditions, and the responses of leaves at different developmental stages were compared follow...
Article
Full-text available
Aquatic birds can facilitate the dispersal of plants, animals, microbes and fungi. Here, we review existing literature on bird-mediated external (ectozoochorous; synonyms epizoochorous, exozoochorous) dispersal to determine the importance of birds as mobile links between aquatic environments, and to evaluate ectozoochory as a mechanism of dispersal...
Article
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The cover image is based on the Review article, Up, up and away: bird-mediated ectozoochorous dispersal between aquatic environments, by NEIL COUGHLAN et al., DOI 10.1111/fwb.12894.
Article
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Aquatic macrophytes can successfully colonise and re-colonise areas separated by space and time. The mechanisms underlying such “mobility” are not well understood, but it has often been hypothesised that epizoochory (external dispersal) plays an important role. Yet, there is only limited, and mostly anecdotal, evidence concerning successful epizooc...
Article
Ultraviolet-A radiation (UV-A: 315–400 nm) is a component of solar radiation that exerts a wide range of physiological responses in plants. Currently, field attenuation experiments are the most reliable source of information on the effects of UV-A. Common plant responses to UV-A include both inhibitory and stimulatory effects on biomass accumulatio...
Chapter
Epidemiological studies have revealed an inverse association between a high consumption of vegetables and a lower risk of both cancer and cardiovascular diseases. This protective effect is mostly due to secondary plant metabolites present in plant tissues. In this context, it has become increasingly clear during the last decade that UV-B radiation...
Article
Mature berries of Pinot Noir grapevines were sampled across a latitudinal gradient in Europe, from southern Spain to central Germany. Our aim was to study the influence of latitude-dependent environmental factors on the metabolite composition (mainly phenolic compounds) of berry skins. Solar radiation variables were positively correlated with flavo...
Article
Invasive alien plant species are usually characterized by a growth rate higher than their native competitors, and this higher rate can be achieved through the opportunistic use of plant nutrients. The growth of the invasive alien duckweed Lemna minuta and the co-generic native Lemna minor were compared under different conditions of nutrient availab...
Article
Primary producers exposed to ultraviolet (UV) radiation accumulate a range of metabolites as part of their UV-acclimation response. These metabolites play an important role in plant and algal UV protection. We investigated whether UV protection is transferred to consumers that feed on UV-acclimated algal biomass and showed that the copepod Tigriopu...
Article
Nano-ZnO particles have been reported to be toxic to many aquatic organisms, although it is debated whether this is caused by nanoparticles per sé, or rather dissolved Zn. This study investigated the role of dissolved Zn in nano-ZnO toxicity to Lemna minor. The technical approach was based on modulating nano-ZnO dissolution by either modifying the...