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Sebastian Stenglein

Sebastian Stenglein
UNCPBA-Facultad de Agronomía de Azul · BIOLAB Azul

Doctor in Agronomy

About

142
Publications
25,324
Reads
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1,426
Citations
Additional affiliations
April 2003 - present
CONICET-National Scientific and Technical Research Council-Argentina
Position
  • Researcher

Publications

Publications (142)
Article
Members of the Fusarium graminearum species complex (FGSC), such as F. graminearum and F. asiaticum are the main cause of Fusarium Head Blight (FHB) of wheat and barley worldwide. In this study, 117 FGSC isolates obtained from commercial barley grain produced in Argentina (n=43 isolates), Brazil (n=35), and Uruguay (n=39) were identified to species...
Article
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Plant beneficial microbes mediate biocontrol of diseases by interfering with pathogens or via strengthening the host. Although phytohormones, including cytokinins, are known to regulate plant development and physiology as well as plant immunity, their production by microorganisms has not been considered as a biocontrol mechanism. Here we identify t...
Article
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Recent studies on a field population of F. graminearum sensu stricto from Argentina revealed an atypical panel of strains identified through PCR genotyping as 15ADON genotypes, but producing high levels of 3ADON. Based on representative strain CBS 139514, we asked if the discrepancy between the trichothecene genotype and chemotype might result from...
Article
The disease known as Fusarium Head Blight (FHB) is one of the most devastating cereal diseases, among which Fusarium graminearum and Fusarium poae have been isolated to be the main etiological agents in cereal crops such as barley and wheat. Currently, global climate change is one of the major concerns worldwide, and temperature is likely to be one...
Preprint
Full-text available
Recent improvements in microbiology and molecular epidemiology were largely stimulated by whole- genome sequencing (WGS), which provides an unprecedented resolution in discriminating highly related genetic backgrounds. WGS is becoming the method of choice in epidemiology of fungal diseases, but its application is still in a pioneer stage, mainly du...
Article
Full-text available
Evaluación de la tolerancia a Fusarium oxysporum and Fusarium solani en variedades de tabaco (Nicotiana tabacum L.) tipo Virginia bajo condiciones controladas en el noroeste de Argentina Abstract The production of tobacco (Nicotiana tabacum L.) in Argentina is centered in the northwestern region (NWA), where the incidence of root rots and stem dise...
Article
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Fusarium graminearum is ranked among the five most destructive fungal pathogens that affect agroecosystems. It causes floral diseases in small grain cereals including wheat, barley and oats, as well as maize and rice. We conducted a systematic review of peer-reviewed studies reporting species within the Fusarium graminearum species complex (FGSC) a...
Article
Fusarium spp. cause diseases and yield and quality losses in cereal crops. They are known to occur in alternative hosts such as weeds. The aims of the present study were to isolate Fusarium spp. from stems, leaves, and inflorescences of different mono- and dicotyledonous weeds and to evaluate the pathogenicity of obtained species in barley and whea...
Article
Alternaria is one of the main fungal genera affecting the quality of barley grains. In this study, a polyphasic approach was carried out to characterise the Alternaria population infecting different cultivars of barley grains from the major producing regions of Argentina in the 2014 and 2015 seasons. Its relationship with Fusarium and correlations...
Article
Alfalfa is an important forage crop in Argentina, with a large area dedicated to its cultivation. However, plant diseases are a common cause of loss because they limit productivity and reduce forage quality. Anthracnose, caused by the Colletotrichum species, is one of the most important diseases affecting alfalfa worldwide. In July 2018, alfalfa pl...
Article
The objective of the present work was to evaluate the pathogenicity of Fusarium tricinctum in barley and to determine the potential effects on grain quality, more specifically regarding the hordein fractions. For this purpose, Koch´s postulates were carried out to evaluate the pathogenicity of F. tricinctum in barley, under greenhouse conditions. F...
Article
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In agricultural soils, fungi constitute most of the total microbial biomass in the environment contributing with more than 50% of the soil biomass. The fungi should be considered as a link in the production not only by their attributes but also for their potential pathogenicity on crops chains. We aim to determine in what extent the combination of...
Article
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Calibrachoa hybrida (calibrachoa, million bells) is a flowering ornamental with increasing importance due to the existence of many successful cultivars for growing indoors in containers and planting in the garden and landscape. The outstanding characteristic is a profuse flowering and intense colour. In October 2019, a fungal isolate was obtained f...
Article
Fusarium Head Blight is the most important disease of cereals worldwide. Studies of interactions between different flower/grain pathogenic Fusarium species have been carried out, using the host and tissue from which the fungus was isolated. The aim of the present study was to assess the root responses of Brachypodium distachyon genotypes to Fusariu...
Article
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Calibrachoa (Solanaceae) is a plant genus typical of open environments that occurs in both the Pampas and the high-altitude grasslands of southern Brazil (Fregonezi et al. 2012). Calibrachoas (mini petunias) are hybrids developed from native germplasm, with increasing importance in the ornamental plant market. During October 2019, basal rot was obs...
Article
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Much of the mitogenome variation observed in fungal lineages seems driven by mobile genetic elements (MGEs), which have invaded their genomes throughout evolution. The variation in the distribution and nucleotide diversity of these elements appears to be the main distinction between different fungal taxa, making them promising candidates for diagno...
Article
Background: Barley is one of the most important winter crops in the world, with multiple uses such as human consumption, animal feed and for the malting industry. This crop is affected by different diseases, such as Fusarium Head Blight (FHB), that causes losses in yield and quality. In the last years F. graminearum and F. poae were two of the mos...
Article
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Aim of study: To report the occurrence of Fusarium graminearum sensu stricto (s.s.) on triticale grains from field samples in Argentina and the potential mycotoxin production for these isolates. Area of study: Buenos Aires province, Argentina Material and methods: A total of 40 samples from different crops (barley, rye, triticale, and wheat) show...
Article
Maize is one of the most important crops in Argentina. This crop can be affected by the presence of different Fusarium species, causing two distinct diseases known as Fusarium ear rot and Gibberella ear rot. In this study, a total of 90 samples from commercial fields of Buenos Aires province in Argentina were collected during the 2015, 2016 and 201...
Article
Background: Wheat is the most important winter crop in the world being affected by the presence of fungal mainly those belonging to the Fusarium genus. Fusarium Head Blight (FHB) is a serious disease that causes important economic damages and quantitative/qualitative losses, being F. graminearum and F. poae two of the most isolated species worldwi...
Article
Background: Barley (Hordeum vulgare L.) is one of the most important cereals worldwide, and its quality is affected by fungal contamination such as species of the genus Alternaria. No information is available about the occurrence of Alternaria mycotoxins in Argentinean barley grains, which is of concern, because they can be transferred into malt a...
Article
Full-text available
Fusarium head blight (FHB) is one of the most important diseases that occurs in cereal regions worldwide and causes serious economic damage. This disease can be caused by several Fusarium species with Fusarium graminearum sensu stricto being the most common pathogen isolated from several crops. The aim of this study was to report the occurrence of...
Article
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Waterlogging stress is one of the abiotic factors which causes damage to crops affecting yield components and grain quality of wheat and barley. On the other hand, Fusarium poae is one of the most common Fusarium species isolated from wheat and barley. The aim of this study was to evaluate the effects of waterlogging and F. poae on disease paramete...
Article
The protein quality of wheat, the most important crop worldwide, is affected by the presence of fungi, mainly those belonging to the Fusarium genus. The aim of this study is to analyze the effects of Fusarium spp. on ground wheat grains quality by measuring gluten strength and quantifying the gliadin/glutenin content. A total of 23 Fusarium spp. is...
Article
Penicillium nalgiovense is not used intentionally by the dairy industry although it is a well-known species for meat products. The aim of this study was to select P. nalgiovense strains characterized in their genetic diversity, based on their ability to grow on the surface of a stuffed cheese and produce the lowest amounts of penicillin in that pro...
Article
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Cordyceps locustiphila is described, illustrated, and compared with a previous finding. This species was collected infecting Tropidacris collaris in the Yabotí biosphere reserve, Misiones province, Argentina. Until now, this entomopathogenic fungus has not been reported affecting T. collaris, and it is the first report for Argentina. From the cordy...
Article
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Symptoms of a wilt disease were observed on 10 of 40 plants of Pseudogynoxis benthamii grown in Buenos Aires, Argentina, in March 2016. The aim of this study was to identify the causal agent of the disease. Five phenotypically identical fungal isolates were obtained from sclerotia that developed on the roots of wilted plants. One of them was inocul...
Article
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In this work, we present a novel biostimulant for sustainable crop disease management, PSP1, based on the plant defense-elicitor AsES, an extracellular protease produced by the strawberry fungal pathogen Acremonium strictum. Fungal fermentation conditions and downstream processing were determined to maximize extracellular protein production, produc...
Article
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Fungi of yield soils represent a significant portion of the microbial biomass and reflect sensitivity to changes in the ecosystem. Our hypothesis was that crops included in cropping regimes under the zero tillage system modify the structure of the soil fungi community. Conventional and molecular techniques provide complementary information for the...
Article
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Cadavers are an abundant source of organic matter. During their decomposition, a variety of organisms – insects, bacteria, and fungi – can feed on them. Within the ambit of forensic science, fungi have thus far received little attention. Nevertheless, the current study found that forensic mycology can be developed as a tool that provides useful evi...
Article
Tobacco (Nicotiana tabacum L.) production is centred in the northwestern region of Argentina (NWA), where the incidence of root rot and stem diseases has increased considerably in recent years. This study aimed to analyse the genetic, morphological and pathogenic diversity of the Fusarium oxysporum and F. solani complexes (hereafter FOSC-FSSC), cau...
Article
Full-text available
Two of the most common species of toxin-producingFusariumcontaminating small cereal grains areFusarium graminearumandF. poae; with both elaborating diverse toxins, especially deoxynivalenol (DON) and nivalenol (NIV), respectively. The objective of our work during the 2012-2014 growing seasons was to screen crops for the most commonly isolatedFusari...
Article
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Schistocerca cancellata is a large-sized acridid, which has historically represented the greatest agricultural problem in southern South America, causing serious economic losses. Since 2015 S. cancellata entered in a state of outbreak condition of historical proportions, producing frequent and large swarms of up to 25 km² in the north and central r...
Article
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Rachiplusia nu (Guenée) (Lepidoptera: Noctuidae) is one of the major lepidopteran pests defoliating soybeans (Glycine max Merrill) in Argentina. The combined use of chemical insecticides and entomopathogenic fungi is a promising pest-control option to minimize adverse chemical effects. In this work, we evaluated the interactions between five insect...
Article
In July 2015, bulbs of Hippeastrum x hybridum imported for cultivation in Buenos Aires (Argentina) showed loss of firmness, rot and green mold. Small pieces from the edge of the lesions were surface disinfected with 2% sodium hypochlorite for 90 s, rinsed in sterilized distilled water and incubated on potato dextrose agar at 22ºC. Isolates of Pe...
Article
Fusarium poae has been considered as a minor species among those that cause the FHB disease but in recent years several researchers have documented a high frequency of occurrence in several crops such as wheat and barley. Evaluating the interaction between Fusarium poae with the model plant Arabidopsis thaliana will contribute to the knowledge abou...
Article
Small-spored Alternaria have been isolated from a wide variety of food crops, causing both economic losses and human health risk due to the metabolites produced. Their taxonomy has been discussed widely, but no scientific consensus has been established in this field to date. Argentina is a major exporter of agricultural products, so it is essential...
Article
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Type B trichothecenes, which pose a serious hazard to consumer health, occur worldwide in grains. These mycotoxins are produced mainly by three different tri-chothecene genotypes/chemotypes: 3ADON (3-acetyldeoxynivalenol), 15ADON (15-acetyldeoxynivalenol) and NIV (nivalenol), named after these three major mycotoxin compounds. Correct identification...
Data
Schematic presentation of workflow of the identification of Tri genotypes performed in the PlutoF platform
Data
Schematic presentation of workflow describing search of sequence and Fusarium metadata in the PlutoF platform
Article
Full-text available
One of the most important genera able to develop diseases in cereals is Fusarium which not only produces losses by the fungal presence but also mycotoxin production harmful to human and animal consumers. In the environment, plants are continuously threatened by abiotic and biotic stresses. Among the latter, pathogens gained importance mainly due to...
Article
Argentina is one of the top 10 world producers and exporters of wheat. In routine surveys of wheat (Triticum aestivum L.) in Buenos Aires Province, Argentina, a new disease was observed in 2012 on seeds of wheat cv. Buck Meteoro. Symptomatic grains (black points) and leaves (chlorosis and spots) were collected during the spring of that year. The ob...
Article
Background: Several fungal species represent a potential risk to embryos of Odontesthes bonariensis (Cuvier and Valenciennes, 1835), a euryhaline freshwater fish that lives in the Pampean inland waters and has potential economic relevance. Aims: To identify two fungi isolated from O. bonariensis eggs exposed to saline conditions and to character...
Article
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Endophytic fungi are ubiquitous and live within host plants without causing any noticeable symptoms of disease. Little is known about the diversity and function of fungal endophytes in plants, particularly in economically important species. The aim of this study was to determine the identity and diversity of endophytic fungi in leaves, stems and ro...
Article
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The morphologic features of Talaromyces udagawae Stolk and Samson are here described and illustrated. This teleomorphic Ascomycota fungus was isolated from soil obtained in Buenos Aires province (Argentina) from beneath a human cadaver in an advanced state of decomposition. After washing and serial dilution of the soil along with moist-chamber tech...
Article
Fusarium poae is one of the Fusarium species isolated from grains associated with Fusarium head blight (FHB), whose occurrence has increased in the last years. In this study, a total of 105 F. poae isolates from Argentina, Belgium, Canada, England, Finland, France, Germany, Hungary, Italy, Luxembourg, Poland, Switzerland and Uruguay were evaluated...
Article
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Tan spot, caused by Pyrenophora tritici-repentis, is a common disease in wheat-growing regions of Argentina. In this study 65 isolates of P. tritici-repentis obtained from different cultivars and wheat regions of Argentina were assessed for their virulence on six wheat cultivars/lines (Glenlea, Salomouni, Katepwa, M-3, 6B365 and 6B662) and for the...
Article
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We demonstrate the effectiveness of three inoculation methods (foliar spray, seed immersion and root immersion) in establishing fungal the entomopathogen Beauveria bassiana as an endophyte in tobacco, corn, wheat and soybean. Colonisation of leaves by B. bassiana was assessed 7, 14, 21 and 28 days post-inoculation. There were significant difference...
Article
Fusarium graminearum is the primary causal agent of Fusarium head blight of wheat in Argentina. This disease affects yield losses and quality of grains reducing the wheat end-use, also causing mycotoxin contamination. In this study, the genetic variability and deoxynivalenol (DON) potential/production of F. graminearum sensu stricto isolates obtain...
Article
Full-text available
Fusarium poae is a relatively weak pathogen with increasing importance in cereal grains, principally due to its capacity to produce several mycotoxins. In this study, we evaluated the pathogenicity and toxin accumulation of individual F. poae isolates on wheat and barley under natural conditions for 3 years. Analysis of variance demonstrated signif...
Article
Full-text available
Fusarium poae has been considered as a minor species among those that cause Fusarium Head Blight (FHB) disease but in recent years several researchers have documented a high frequency of occurrence of this species. In this study, a total of 173 F. poae isolates from Argentina, Belgium, Canada, England, Finland, France, Germany, Hungary, Italy, Luxe...
Article
Fusarium head blight is an important disease affecting cereal grains. Fusarium graminearum is the major causal agent of this disease around the world, but some researchers have documented the increased importance of F. poae. Moreover, F. poae presence may be accompanied of its mycotoxins production, being able to produce trichothecenes of type A di...
Article
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The Silences of the Archives, the Reknown of the Story. The Martin Guerre affair has been told many times since Jean de Coras and Guillaume Lesueur published their stories in 1561. It is in many ways a perfect intrigue with uncanny resemblance, persuasive deception and a surprizing end when the two Martin stood face to face, memory to memory, befor...
Article
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Our aim was to evaluate the efficacy of combinations between two biorational insecticides (luphenuron, methoxyfenozide), a new synthetic chemical pesticide (rynaxypyr), and three entomopathogenic fungi strains (Beauveria bassiana LPSc 1067, LPSc1082), and Metarhizium anisopliae (LPSc 907) in the biocontrol of the pest grasshopper Ronderosia bergi (...
Article
One of the most important diseases in cereal crops is Fusarium head blight, being Fusarium graminearum the main etiological agent. This fungus has the ability to produce a wide spectrum and quantity of toxins, especially deoxynivalenol (DON). During the last crop season (2012-2013) the climatic conditions favored Fusarium colonization. The objectiv...
Article
Fusarium head blight is a fungal disease caused by a complex of Fusarium species on cereals, such as barley and wheat. It has economic impacts due to yield reductions and mycotoxin contamination. As barley production has increased considerably in the last 5 years in Argentina, a survey was conducted for identifying Fusarium species associated with...
Article
The presence of Fusarium species in cultivated soils is commonly associated with plant debris and plant roots. Fusarium species are also soil saprophytes. The aim of this study was to examine the occurrence and distribution of soil Fusarium spp. at different soil depths in a zero tillage system after the wheat was harvested. Soil samples were obtai...