Sandra Ann Ingela Wright

Sandra Ann Ingela Wright
University of Gävle · Department of Building, Energy and Environmental Engineering

Ph.D.

About

52
Publications
22,841
Reads
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1,181
Citations
Citations since 2017
10 Research Items
571 Citations
2017201820192020202120222023020406080100120
2017201820192020202120222023020406080100120
2017201820192020202120222023020406080100120
2017201820192020202120222023020406080100120
Additional affiliations
February 2013 - present
University of Gävle
Position
  • University of Gävle
February 2013 - present
University of Gävle
Position
  • Professor (Associate)
Description
  • I am teaching horticulture, running a research project on postharvest quality of apples with regard to their cultivation conditions in the orchard, and one on biodegradation of lignocellulosic materials by yeasts.
January 2011 - present

Publications

Publications (52)
Book
Full-text available
2021). Assessment of treatment methods and validation criteria for composting and biogas facilities in relation to plant health risks and the risk of spreading alien organisms. Scientific Opinion of the Panel on Plant Health of the Norwegian Scientific Committee for Food and Environment. Assessment of treatment methods and validation criteria for c...
Article
Full-text available
In the microbial community of decaying wood, yeasts are important for the recycling of nutrients. Nevertheless, information on their biodiversity in this niche in the Northern hemisphere is limited. Wood-colonising yeasts encounter identical and similar growth-inhibitory compounds as those in spent sulphite liquor (SSL), an energy-rich, acid hydrol...
Article
Full-text available
BACKGROUND Fruit of two apple cultivars, the susceptible cv. ‘Braeburn’, and the less susceptible cv. ‘Golden Delicious’, were investigated with respect to their response to inoculation with Botrytis cinerea. Successful infection by B. cinerea leads to an oxidative burst and perturbation of plant redox homeostasis. To investigate the interaction be...
Article
Patulin (1) is a mycotoxin contaminant in fruit and vegetable products worldwide. Biocontrol agents, such as the yeast Rhodotorula kratochvilovae strain LS11, can reduce patulin (1) contamination in food. R. kratochvilovae LS11 converts patulin (1) into desoxypatulinic acid (DPA) (5), which is less cytotoxic than the mycotoxin (1) to in vitro human...
Article
Full-text available
Vanillin is an aromatic aldehyde found as a component of lignocellulosic material, and in the cured pods of orchidaceae plants. Like other phenolic substances, vanillin has antimicrobial activity and can be extracted from lignin either by a thermo-chemical process or through microbial degradation. Vanillin, can serve as a model monomer in biodegrad...
Article
Full-text available
Two distinct Phytophthora taxa were found to be associated with brown rot of pomelo (Citrus grandis), a new disease of this ancestral Citrus species, in the Vinh Long province, Mekong River Delta area, southern Vietnam. On the basis of morphological characters and using the ITS1-5.8S-ITS2 region of the rDNA and the cytochrome oxidase subunit 1 (COI...
Data
List of isolates and GenBank accession numbers used in phylogenetic analysis. (DOCX)
Data
Complete list of isolates of Phytophthora species sampled in the Mekong River Delta (Vietnam). (DOCX)
Article
Patulin is produced by species of Penicillium, Aspergillus and Byssochlamys. It is a mycotoxin that primarily contaminates pome fruit products, but is being reported from other fruit and foods, for example shellfish and cheese. New findings reveal that patulin binds to the bases of DNA, in addition to its well-established ability to conjugate sulfh...
Article
Full-text available
A new disease of jackfruit (Artocarpus heterophyllus Lam.) was observed in the south-eastern region of South Vietnam. Symptoms included root rot, cankers and gummosis of trunks, chlorosis, wilt, blight of leaves, defoliation, fruit brown rot, and tree death. The disease was found in 10% of surveyed farms with an incidence varying from 2% to nearly...
Article
A plant bioreactor has enormous capability as a system that supports many biological activities, that is, production of plant bodies, virus-like particles (VLPs), and vaccines. Foreign gene expression is an efficient mechanism for getting protein vaccines against different human viral and nonviral diseases. Plants make it easy to deal with safe, in...
Article
Full-text available
The mycotoxin patulin is produced by the blue mould pathogen Penicillium expansum in rotting apples during postharvest storage. Patulin is toxic to a wide range of organisms, including humans, animals, fungi and bacteria. Wash water from apple packing and processing houses often harbours patulin and fungal spores, which can contaminate the environm...
Article
Full-text available
Patulin is a mycotoxin that contaminates pome fruits and derived products worldwide. Basidiomycete yeasts belonging to the subphylum Pucciniomycotina have been identified to have the ability to degrade this molecule efficiently and have been explored through different approaches to understand this degradation process. In this study, Sporobolomyces...
Article
Full-text available
Lesion mimic mutants of plants have the feature of spontaneously displaying necrotic spots or bands on their leaves. Lesion mimics have often displayed enhanced resistance to biotrophic pathogens whilst showing increased susceptibility to necrotrophs. This paper identifies three novel, non-allelic mutants of barley (Hordeum vulgare), which spontane...
Article
Full-text available
Due to the lack of foliar fungicide use, the organic produc-tion of Brassica seeds free of Alternaria spp. is difficult. Therefore, effective seed treatments certified for use in organic farming are needed to eradicate or at least effec-tively reduce the seed-borne inoculum. We here report results of greenhouse and field experiments in which non-ch...
Article
Nutrients that leach out from roots constitute a major source of food for root-colonizing bacteria. The role of specific nutrients in this interaction is unclear. The aim of the present study was to examine whether colonization ability could be attributed to specific nutrient utilization profiles. Twenty fluorescent pseudomonads were tested for col...
Article
Full-text available
The current study was initiated to evaluate the efficacy of physical methods (hot water, aerated steam, electron treatment) and agents of natural origin (resistance inducers, plant derived products, micro-organisms) as seed treatments of carrots for control of Alternaria dauci and A. radicina. Control of both Alternaria species by seed treatment wi...
Chapter
Host responses in stored fruits induced by biocontrol agents (BCAs) i.e. by non-pathogenic yeasts and bacteria, share many features with the defence mechanisms that are induced in actively growing plant tissues. The perception of a microorganism is accompanied by the production and activation of reactive oxygen species (ROS), antioxidant enzymes, p...
Article
Full-text available
The aim of the present study was to identify seed treatment methods for eradicating Phoma valerianellae from lamb`s lettuce seeds in organic vegetable production. Using seeds naturally infested with the pathogen, the effect of three physical methods (hot water, aerated steam, electron treatment) and different agents of natural origin (micro-organis...
Poster
Previously, protocols for hepatitis C virus (HCV) high variable region 1 (HVR1)-subunit and B subunit of cholera toxin (CTB) vaccines were developed by means of a Nicotiana benthamiana and engineered tobacco mosaic virus (TMV) vector system.. Expressed proteins were confirmed by EM, ELISA, RT-PCR, and western blot.. Further, a simplified protocol w...
Article
Full-text available
Greenhouse trials were carried out in order to test the efficacy of different seed treatments as alternatives to chemicals against Colletotrichum lindemuthianum cause of anthracnose on bean and Ascochyta spp. cause of Ascochyta blights on pea, respectively. Resistance inducers, commercially formulated microorganisms, non-formulated selected strains...
Chapter
Mycotoxins are toxic metabolites produced by fungi. The ability to produce mycotoxins is found in some fungal pathogens of plants and molding agents of food and feed, and has a noteworthy repercussion on the quality and safety of food products. Mycotoxin contaminations present one of the most insidious challenges to meet in food safety. Their impor...
Article
Full-text available
European law provides that, in organic farming, organically produced seed should be used. Therefore new sanitation treatments need to be developed which do not use classical fungicides but still produce seed free from pathogens which can strongly affect yield of the crop. Greenhouse trials were carried out in order to test the efficacy of different...
Article
Full-text available
Production of pathogen-free seeds is a major goal in organic farming. In the framework of the EU-funded project “STOVE” (“Seed Treatments for Organic Vegetable Production”) physical and biological methods of seed treatment (alone and in combination) were investigated in different vegetable / pathogen systems. Overall, the physical treatments (hot w...
Conference Paper
Full-text available
The mycotoxin patulin is produced by the green mould pathogen Penicillium expansum in rotting apples during postharvest storage. Strains of epiphytic yeasts and yeast-like organisms have the capacity to protect apples from infection by green mould. One of these, Rhodotorula glutinis strain LS11 can degrade patulin to two non-toxic products, of whic...
Article
Full-text available
Introduction We screened a fast-neutron mutated barley population to isolate and characterize barley lesion mimic mutants. The albino mutant frequency in this population was found to be around 2%, suggesting that a sufficiently high level of mutants could potentially be found. From a screen of about 5000 M2 spikes, we found four mutants that were c...
Article
Pantocin A and pantocin B are low-molecular weight, peptide-based antibiotics that are produced in minimal media by the biocontrol agent P. agglomerans, which are inhibitory to the fire blight pathogen, E. amylovora. Pantocin A and pantocin B are members of a family of antibiotics whose toxicity is inhibited by certain amino acids. They inhibit enz...
Article
During September 2004, downy mildew of parsley caused by a species of Plasmopara was observed in an experimental field of parsley (Petroselinum crispum subsp. crispum L. cv. Gigante d'Italia/Hilmar) in Borgeby in southern Sweden. The summer of 2004 was exceptionally wet and humid. Disease became widespread throughout the field in just a few days. L...
Article
Full-text available
The aim of EU-project "Seed Treatments for Organic Vegetable Production" (STOVE) was to evaluate non-chemical methods for control of seed-borne pathogens in organic vegetable production. Physical (hot air, hot water and electron) and biologi-cal (microorganisms and different agents of natural origin) methods have been investigated. Trials have been...
Conference Paper
Full-text available
Strains of Pantoea agglomerans (syn. Erwinia herbicola and Enterobacter agglomerans) are ubiquitous in nature, inhabiting diverse environments, such as plants, water, soil, humans and animals (Gibbins 1978). The bacterium is considered an opportunistic pathogen of humans and animals, a direct cause of septicaemia and an allergen. P. agglomerans has...
Article
Full-text available
Pantoea agglomerans (syn. Erwinia herbicola) is a natural epiphyte of plants susceptible to Erwinia amylovora, the fire blight pathogen, but it also has a number of others habitats. P. agglomerans is an affective biocontrol agent; it coinhabits the stigmatic surface of flowers with E. amylovora. Due to the toxicity of copper compounds and the emerg...
Conference Paper
Full-text available
In connection with extensive testing of a large number of bacteria for biological control of fungal seed borne pathogens, we have noted on several occasions that application of these bacteria to seed also protects against insect pests and diseases attacking aerial plant parts. Thus a single treatment can offer the plants protection against a large...
Article
Full-text available
The influence of environmental factors during isolation on the composition of potential biocontrol isolates is largely unknown. Bacterial isolates that efficiently suppressed wheat seedling blight caused by Fusarium culmorum were found by isolating psychrotrophic, root-associated bacteria and by screening them in a bioassay that mimicked field cond...
Article
Peptidische Ursprünge: Fütterungsexperimente mit 14C-markierten Aminosäuren zeigen, dass das bicyclische Gerüst von Pantocin A aus Glutamat- und Glutamin-Vorstufen aufgebaut wird. Bei der Sequenzierung und Transposon-Mutagenese eines 3500 Basen umfassenden DNA-Abschnittes einer Escherichia-coli-Zelllinie wurden drei Teilabschnitte (siehe Bild: paaA...
Article
Pantoea agglomerans strain Eh318 has been effective in biological control tests against fire blight and it inhibits the growth of Erwinia amylovora on minimal media. A double zone of inhibition on a plate containing a soft-agar overlay seeded with E. amylovora suggests the action of two distinct antibiotics, pantocin A and pantocin B. The structura...
Conference Paper
The regulation of biocontrol ability in isolates of P. chlororaphis, efficient biocontrol agents of fungal, seed-borne diseases in barley is largely unknown. Seeds infested with the net blotch pathogen (Drechslera teres) and subsequently coated with a suspension of the above bacteria produce healthy seedlings, whereas uncoated seeds produce seedlin...
Article
Anthracnose caused by Colletotrichum is a severe foliar disease in rhododendron plantations in Sweden and Latvia. Isolates of this pathogen were collected and characterised based on morphological and molecular criteria. Out of 37 isolates examined, two with falcate spores were identified as C. dematium. The remainder of the isolates had straight cy...
Article
Full-text available
Pantoea agglomerans (synonym: Erwinia herbicola) strain Eh318 produces through antibiosis a complex zone of inhibited growth in an overlay seeded with Erwinia amylovora, the causal agent of fire blight. This zone is caused by two antibiotics, named pantocin A and B. Using a genomic library of Eh318, two cosmids, pCPP702 and pCPP704, were identified...
Article
Full-text available
Most bacterial toxins with activity toward plants have activity toward bacteria and fungi as well. The toxins covered in this review are produced mainly by phytopathogenic Pseudomonas species: phaseolotoxin, produced by P. syringae pv. phaseolicola; tabtoxin, produced by P. syringae pv. tabaci; rhizobitoxine, produced by P. andropogonis and species...

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