Angela Sessitsch

Angela Sessitsch
AIT Austrian Institute of Technology | ait · Center for Health & Bioresources

About

704
Publications
135,755
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26,366
Citations
Citations since 2017
81 Research Items
16831 Citations
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201720182019202020212022202301,0002,0003,000

Publications

Publications (704)
Article
Full-text available
Microbiome science as an interdisciplinary research field has evolved rapidly over the past two decades, becoming a popular topic not only in the scientific community and among the general public, but also in the food industry due to the growing demand for microbiome-based technologies that provide added-value solutions. Microbiome research has exp...
Article
The association of the plant microbiota is a successional process that starts with the seed and its intrinsic microbiota. The recently reported relevance of seeds as carriers of microbiota has encouraged investigations of the assembly of these communities in different tissues. Here, we address the contributions of both seed and soil bacterial micro...
Article
Full-text available
Background Tremendous amounts of data generated from microbiome research studies during the last decades require not only standards for sampling and preparation of omics data but also clear concepts of how the metadata is prepared to ensure re-use for integrative and interdisciplinary microbiome analysis. Results In this Commentary, we present our...
Article
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In addition to challenges like climate change and biodiversity loss, the sustainability and resilience of agrifood systems worldwide are currently challenged by new threats, such as the COVID-19 pandemic and the Ukraine war. Furthermore, the resilience and sustainability of our agrifood systems need to be enhanced in ways that simultaneously increa...
Article
Paving the microbiome way for improved food systems MicrobiomeSupport’s mission is to guide the creation of a sustainable and circular microbiome-based bioeconomy. The project has contributed towards establishing standards for microbiome research and aligning research funding globally. Furthermore, it has developed a set of recommendations for a st...
Article
Full-text available
Plants are naturally associated with diverse microbial communities, which play significant roles in plant performance, such as growth promotion or fending off pathogens. The roots of Alkanna tinctoria L. are rich in naphthoquinones, particularly the medicinally used enantiomers alkannin and shikonin and their derivatives. Former studies already hav...
Article
Soil fungi, as a major decomposer of organic matter, govern carbon (C) cycle and act as crucial regulators of the soil C and nutrient balance in terrestrial ecosystems. Climate change and parent material alter important environmental conditions that may affect fungal community. However, very little is known about the diversity and community structu...
Article
Full-text available
The overarching biological impact of microbiomes on their hosts, and more generally their environment, reflects the co-evolution of a mutualistic symbiosis, generating fitness for both. Knowledge of microbiomes, their systemic role, interactions, and impact grows exponentially. When a research field of importance for planetary health evolves so rap...
Article
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Increasing knowledge of the microbiome has led to significant advancements in the agrifood system. Case studies based on microbiome applications have been reported worldwide and, in this review, we have selected 14 success stories that showcase the importance of microbiome research in advancing the agrifood system. The selected case studies describ...
Article
Full-text available
Endophytic strains belonging to the Bacillus cereus group were isolated from the halophytes Atriplex halimus L. (Amaranthaceae) and Tamarix aphylla L. (Tamaricaceae) from costal and continental regions in Algeria. Based on their salt tolerance (up to 5%), the strains were tested for their ability to alleviate salt stress in tomato and wheat. Bacill...
Chapter
Plants contain diverse microorganisms that interact with their hosts and with each other. Beneficial bacteria can be utilised on crops to protect plants against biotic and abiotic stresses and to stimulate plant growth. However, the behaviour of specific microorganisms on and within plants is still underexplored. Knowledge of bacterial colonisation...
Article
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Microbiomes are all around us in natural and cultivated ecosystems, for example, soils, plants, animals and our own body. Microbiomes are essential players of biotechnological applications, and their functions drive human, animal, plant and environmental health. The rapidly developing microbiome research landscape was studied by a global mapping ex...
Article
Full-text available
Beneficial insects and mites, including generalist predators of the family Miridae, are widely used in biocontrol programs against many crop pests, such as whiteflies, aphids, lepidopterans and mites. Mirid predators frequently complement their carnivore diet by feeding plant sap with their piercing–sucking mouthparts. This implies that mirids may...
Preprint
Full-text available
Background Due to climate change and reduced use of fertilizers combined stress scenarios are becoming increasingly frequent in crop production. In a field experiment we tested the effect of combined water and phosphorus limitation on the growth performance and plant traits of eight tetraploid and two diploid potato varieties as well as on root-ass...
Article
Full-text available
In the past, the potato plant microbiota and rhizosphere have been studied in detail to improve plant growth and fitness. However, less is known about the postharvest potato tuber microbiome and its role in storage stability. The storage stability of potatoes depends on genotype and storage conditions, but the soil in which tubers were grown could...
Article
The United Nations Sustainable Development Goals (SDGs) are being integrated into bioeconomy strategies around the world, including the European Green Deal. We highlight how microbiome-based innovations can contribute to policies that interface with the SDGs and argue that international cooperation in microbiome science is crucial for success.
Article
Full-text available
Abstract The field of microbiome research has evolved rapidly over the past few decades and has become a topic of great scientific and public interest. As a result of this rapid growth in interest covering different fields, we are lacking a clear commonly agreed definition of the term “microbiome.” Moreover, a consensus on best practices in microbi...
Preprint
Full-text available
Microbiome research has consistently been placed in the spotlight over the past two decades, and has shown tremendous promise in the fields of medicine, environmental science, food production, and agriculture. Life on Earth does not exist without microbes, and we may benefit from learning more about them. Yet, there is no common understanding among...
Article
Full-text available
The plant endosphere is colonized by complex microbial communities and microorganisms, which colonize the plant interior at least part of their lifetime and are termed endophytes. Their functions range from mutualism to pathogenicity. All plant organs and tissues are generally colonized by bacterial endophytes and their diversity and composition de...
Article
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Plant growth-promoting bacteria (PGPB) are promising alternatives in the reduction of the use of chemical fertilisers. Likewise, humic acid (HA) can improve plant growth and/or the establishment of endophytic PGPB. Although the effects of PGPB colonisation or HA treatment have been studied separately, little information is available on plant respon...
Article
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The miCROPe 2019 symposium, which took place from 2-5 December 2019 in Vienna, Austria, has unified researchers and industry from around the world to discuss opportunities, challenges and needs of microbe-assisted crop production. There is broad consensus that microorganisms-with their abilities to alleviate biotic and abiotic stresses and to impro...
Article
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An amendment to this paper has been published and can be accessed via the original article.
Article
Esca, a major grapevine trunk disease in old grapevines, is associated with the colonization of woody tissues by a broad range of plant pathogenic fungi. To identify which fungal and bacterial species are involved in the onset of this disease, we analysed the microbiota from woody tissues of young (10‐year‐old) grapevines at an early stage of esca....
Article
Full-text available
The microbiome research field is rapidly evolving, but the required biobanking infrastructure is currently fragmented and not prepared for the biobanking of microbiomes. The rapid advancement of technologies requires an urgent assessment of how biobanks can underpin research by preserving microbiome samples and their functional potential.
Article
Full-text available
Microbacterium species have been isolated from a wide range of hosts and environments, including heavy metal-contaminated sites. Here, we present a comprehensive analysis on the phylogenetic distribution and the genetic potential of 70 Microbacterium belonging to 20 different species isolated from heavy metal-contaminated and non-contaminated sites...
Article
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Aims. Plants host communities of fungal and bacterial endophytes, establishing a complex network of multipartite interactions, but the mechanisms whereby they interact are poorly understood. Some fungi, such as the beneficial mycorrhiza-like fungus Serendipita (=Piriformospora) indica, can be helped by bacteria for establishment, survival and colon...
Article
Full-text available
Serendipita (Piriformospora) indica is a fungal endophytic symbiont with the capabilities to enhance plant growth and confer resistance to different stresses. However, the application of this fungus in the field has led to inconsistent results, perhaps due to antagonism with other microbes. Here, we studied the impact of individual bacterial isolat...
Conference Paper
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Alkannin, shikonin (A/S) and their derivatives, known as red naphthoquinones, are commercially interesting plant secondary metabolites which are produced in the roots of different species of the Boraginaceae family. Specifically, red colour extracts from the roots of Alkanna, Echium and Lithospermum were traditionally used as dyes and in herbal pre...
Article
Full-text available
Strong efforts have been made to understand the bacterial communities in potato plants and the rhizosphere. Research has focused on the effect of the environment and plant genotype on bacterial community structures and dynamics, while little is known about the origin and assembly of the bacterial community, especially in potato tubers. The tuber mi...
Article
Full-text available
Seed-associated bacteria represent an important reservoir of microorganisms passed onto progeny plants and have been postulated to be important for early plant development. According to few reports some bacterial taxa seem to be transferred from seed to seed and some seed-associated microorganisms may derive from insect visits during flowering, how...
Article
Plants are associated with highly diverse microbiota, which are crucial partners for their host carrying out important functions. Essentially, they are involved in nutrient supply, pathogen antagonism and protection of their host against different types of stress. The potential of microbial inoculants has been demonstrated in numerous studies, prim...
Chapter
Plants interact with diverse soil microorganisms providing niches for growth, and in particular, plant roots represent hot spots for multitrophic interactions. The system comprising the plant, its associated microbiome, and other organisms is termed the plant holobiont. In this system, all partners, primarily the plant and its associated microbiota...
Article
Plant microbiota are the subject of new product developments, primarily aimed at improving plant health, nutrition, and stress resilience. However, current application of microbials in the field faces multiple challenges and we propose that multiple aspects need to be considered, for example, understanding the complexity and ecological behaviour of...
Article
Full-text available
Plants have evolved with a plethora of microorganisms having important roles for plant growth and health. A considerable amount of information is now available on the structure and dynamics of plant microbiota as well as on the functional capacities of isolated community members. Due to the interesting functional potential of plant microbiota as we...
Article
Full-text available
Microbes and their activities have pervasive, remarkably profound and generally positive effects on the functioning, and thus health and well‐being, of human beings, the whole of the biological world, and indeed the entire surface of the planet and its atmosphere. Collectively, and to a significant extent in partnership with the sun, microbes are t...
Article
Full-text available
Virtually all studied plant tissues are internally inhabited by endophytes. Due to their relevance for plant growth and health, bacterial microbiota of crop plants have been broadly studied. In plant microbiome research the root is the most frequently addressed environment, whereas the ecology of microbiota associated with reproductive organs still...
Article
Full-text available
The fourth and fifth authors’ names are spelled incorrectly. The correct names are: Gajender Aleti and Muhammad Abaid Ullah. The correct citation is Sarwar A, Brader G, Corretto E, Aleti G, Ullah MA, Sessitsch A, et al. (2018) Qualitative analysis of biosurfactants from Bacillus species exhibiting antifungal activity. PLoS ONE 13(6): e0198107. http...
Research
Full-text available
Bacillus spp. produce a broad spectrum of lipopeptide biosurfactants, among which surfactin, iturin and fengycin are widely studied families. The goals of this study were to characterize the biosurfactant activity of Bacillus spp. and to investigate their motility and biofilm formation capabilities. In addition, we extracted lipopeptides from these...
Article
Full-text available
Bacillus spp. produce a broad spectrum of lipopeptide biosurfactants, among which surfactin, iturin and fengycin are widely studied families. The goals of this study were to characterize the biosurfactant activity of Bacillus spp. and to investigate their motility and biofilm formation capabilities. In addition, we extracted lipopeptides from these...
Article
Full-text available
Bacillus spp. produce a broad spectrum of lipopeptide biosurfactants, among which surfactin, iturin and fengycin are widely studied families. The goals of this study were to characterize the biosurfactant activity of Bacillus spp. and to investigate their motility and biofilm formation capabilities. In addition, we extracted lipopeptides from these...
Data
Morphological characterization of Bacillus strains. (DOCX)
Data
Biosurfactant production at different time intervals in LB and Landy media. (DOCX)
Article
Full-text available
The role of the plant microbiota in plant establishment, growth and health is well studied, but the dynamics of postharvest crop microbiota and its role in postharvest crop quality are largely unexplored, although food loss is an enormous issue worldwide. The microbiota might be especially important during crop storage by either preventing or favou...
Article
The potential of the Bacillus genus to antagonize phytopathogens is associated with the production of cyclic lipopeptides. Depending upon the type of lipopeptide, they may serve as biocontrol agents that are eco-friendly alternatives to chemical fertilizers. This study evaluates the biocontrol activity of surfactin-producing Bacillus (SPB) strains...
Article
Full-text available
Background and aimsSeeds are inhabited by diverse bacterial and fungal taxa whose colonization patterns are little understood. We hypothesized, however, that specific niches within seeds host microbes. Methods In this study, the putative presence of bacteria, inhabiting the seed endosphere of an angiosperm, the melon Cucumis melo reticulatus group...
Article
Full-text available
Background Seeds host bacterial inhabitants but only a limited knowledge is available on which taxa inhabit seed, which niches could be colonized, and what the routes of colonization are. Scope Within this commentary, a discussion is provided on seed bacterial inhabitants, their taxa, and from where derive the seed colonizers. Conclusions Seeds/a...
Article
Full-text available
Microbes produce a variety of secondary metabolites to be explored for herbicidal activities. We investigated an endophyte Pseudomonas viridiflava CDRTc14, which impacted growth of its host Lepidium draba L., to better understand the possible genetic determinants for herbicidal and host-interaction traits. Inoculation tests with a variety of target...
Article
Full-text available
The application of beneficial, plant-associated microorganisms is a sustainable approach to improving crop performance in agriculture. However, microbial inoculants are often susceptible to prolonged periods of storage and deleterious environmental factors, which negatively impact their viability and ultimately limit efficacy in the field. This par...
Article
Full-text available
The African pepper bark tree, Warburgia ugandensis, accumulates antimicrobial drimane sesquiterpenes in all of its organs. One hypothesis states that plant defense compounds determine endophyte community structure. Another hypothesis suggests that they just facilitate the endophytic lifestyle by exerting a balanced antagonism. To explore this, a re...
Article
Gentle remediation options (GRO) are based on the combined use of plants, associated microorganisms and soil amendments, which can potentially restore soil functions and quality. We studied the effects of three GRO (aided-phytostabilisation, in situ stabilisation and phytoexclusion, and aided-phytoextraction) on the soil microbial biomass and respi...
Chapter
The collective genomes of the holobiont plant comprising diverse microbiota encode a number of functions required for the host as well as for supporting the interaction between the plant and its associated microbiome. This chapter reviews various plant habitats for microorganisms, microbiome functions, and functional as well as sequence-based metag...
Article
Full-text available
Potato (Solanum tuberosum) is an important staple crop worldwide, it has been cultivated in the Andean Altiplano under low-input farming practices at high altitudes and under harsh environment for centuries. We analyzed secondary metabolite (SM) gene diversity encoded in the potato rhizosphere microbiome during plant growth at three distinct sites...
Article
Full-text available
Plants are colonized on their surfaces and in the rhizosphere and phyllosphere by a multitude of different microorganisms and are inhabited internally by endophytes. Most endophytes act as commensals without any known effect on their plant host, but multiple bacteria and fungi establish a mutualistic relationship with plants, and some act as pathog...
Article
Full-text available
The microbial component of healthy seeds – the seed microbiome – appears to be inherited between plant generations and can dynamically influence germination, plant performance, and survival. As such, methods to optimize the seed microbiomes of major crops could have far-reaching implications for plant breeding and crop improvement to enhance agricu...
Data
Negative control of DOPE-FISH/CSLM microscopy on seeds of Glycine max L. (soy) containing P. phytofirmans PsJN. The use of the NONEUB probe does not show bacteria except for a few autofluorescent microbes (A–D). Seeds used were collected from fully ripe fruits (growth stage 89 on the BBCH scale).