Effects of infestations of the storage mite Tyrophagus putrescentiae (Acaridae) on the presence of fungal species and mycotoxin production in stored products

2021 ◽  
Vol 94 ◽  
pp. 101883
Author(s):  
Patrícia Vogel ◽  
Guilherme Liberato da Silva ◽  
Isadora Zanatta Esswein ◽  
Maria Cristina Dallazen ◽  
Daiane Heidrich ◽  
...  
Keyword(s):  
Fungal Species ◽  
Stored Products ◽  
Tyrophagus Putrescentiae ◽  
Mycotoxin Production ◽  
Storage Mite

scholarly journals Isolation, Molecular Identification, and Mycotoxin Production of Aspergillus Species Isolated from the Rhizosphere of Sugarcane in the South of Iran

Toxins ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 122 ◽  
Author(s):  
Maryam Tavakol Noorabadi ◽  
Valiollah Babaeizad ◽  
Rasoul Zare ◽  
Bita Asgari ◽  
Miriam Haidukowski ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Aspergillus Terreus ◽  
Plant Pathogens ◽  
Fungal Species ◽  
Aspergillus Species ◽  
Aspergillus Tubingensis ◽  
Ecological Role ◽  
The South ◽  
Mycotoxin Production ◽  
Aspergillus Section

Knowledge of the genetic diversity detected among fungal species belonging to the genus Aspergillus is of key importance for explaining their important ecological role in the environment and agriculture. The current study aimed to identify Aspergillus species occurring in the rhizosphere of sugarcane in the South of Iran, and to investigate their mycotoxin profiles. One-hundred and twenty-five Aspergillus strains were isolated from the soil of eight major sugarcane-producing sites, and were molecularly identified using sequences of partial -tubulin (benA) and partial calmodulin (CaM) genes. Our molecular and phylogenetic results showed that around 70% of strains belonged to the Aspergillus section Nigri, and around 25% of species belonged to the Aspergillus section Terrei. Species belonging to both sections are able to produce different mycotoxins. The production of mycotoxins was measured for each species, according to their known mycotoxin profile: patulin (PAT) and sterigmatocystin (STG) for Aspergillus terreus; ochratoxin A (OTA) and fumonisins for Aspergillus welwitschiae; and OTA alone for Aspergillus tubingensis. The data showed that the production of OTA was detected in only 4 out of 10 strains of A. welwitschiae, while none of the A. tubingensis strains analyzed produced the mycotoxin. Fumonisins were produced by 8 out of 10 strains of A. welwitschiae. Finally, none of the 23 strains of A. terreus produced STG, while 13 of them produced PAT. The occurrence of such mycotoxigenic plant pathogens among the fungal community occurring in soil of sugarcane fields may represent a significant source of inoculum for the possible colonization of sugarcane plants, since the early stages of plant growth, due to the mycotoxin production capability, could have worrisome implications in terms of both the safety and loss of products at harvest.

scholarly journals Modelling Fungal Growth, Mycotoxin Production and Release in Grana Cheese

2020 ◽  
Vol 8 (1) ◽  
pp. 69 ◽  
Author(s):  
Marco Camardo Leggieri ◽  
Amedeo Pietri ◽  
Paola Battilani
Keyword(s):  
Predictive Models ◽  
Fungal Growth ◽  
Cyclopiazonic Acid ◽  
Fungal Species ◽  
Fungal Ecology ◽  
Influence Of Temperature ◽  
Mycotoxin Production ◽  
Roquefortine C ◽  
Grana Cheese

No information is available in the literature about the influence of temperature (T) on Penicillium and Aspergillus spp. growth and mycotoxin production on cheese rinds. The aim of this work was to: (i) study fungal ecology on cheese in terms of T requirements, focusing on the partitioning of mycotoxins between the rind and mycelium; and (ii) validate predictive models previously developed by in vitro trials. Grana cheese rind blocks were inoculated with A. versicolor, P. crustosum, P. nordicum, P. roqueforti, and P. verrucosum, incubated at different T regimes (10–30 °C, step 5 °C) and after 14 days the production of mycotoxins (ochratoxin A (OTA); sterigmatocystin (STC); roquefortine C (ROQ-C), mycophenolic acid (MPA), Pr toxin (PR-Tox), citrinin (CIT), cyclopiazonic acid (CPA)) was quantified. All the fungi grew optimally around 15–25 °C and produced the expected mycotoxins (except MPA, Pr-Tox, and CIT). The majority of the mycotoxins produced remained in the mycelium (~90%) in three out of five fungal species (P. crustosum, P. nordicum, and P. roqueforti); the opposite occurred for A. versicolor and P. verrucosum with 71% and 58% of STC and OTA detected in cheese rind, respectively. Available predictive models fitted fungal growth on the cheese rind well, but validation was not possible for mycotoxins because they were produced in a very narrow T range.

Intradermal testing with the storage mite Tyrophagus putrescentiae in normal dogs and dogs with atopic dermatitis in Colorado

2005 ◽  
Vol 16 (1) ◽  
pp. 27-31 ◽  
Author(s):  
RALF S. MUELLER ◽  
KATHRYN V. FIESELER ◽  
RODNEY A. W. ROSYCHUK ◽  
TRACEY GREENWALT
Keyword(s):  
Atopic Dermatitis ◽  
Tyrophagus Putrescentiae ◽  
Intradermal Testing ◽  
Storage Mite

scholarly journals First record of Tyrophagus putrescentiae (Schrank) (Acari: Acaridae) in soybean plants under no tillage in Minas Gerais, Brazil

2007 ◽  
Vol 37 (3) ◽  
pp. 876-877 ◽  
Author(s):  
Charles Martins de Oliveira ◽  
Denise Návia ◽  
Marina Regina Frizzas
Keyword(s):  
First Record ◽  
Mite Species ◽  
Minas Gerais ◽  
Stored Products ◽  
No Tillage ◽  
Tyrophagus Putrescentiae ◽  
Glycine Max L ◽  
Veterinary Importance ◽  
Commercial Crop ◽  
Soybean Plants

Tyrophagus putrescentiae (Schrank) is a mite species of economic and medical-veterinary importance, usually found associated with stored products. Presence of this mite was observed in the stems of soybean [Glycine max (L.) Merr.] plants originated from a under non tillage commercial crop in 2003/2004, in the municipal district of Unaí, State of Minas Gerais, Brazil. This is the first record of T. putrescentiae occurring in soybean plants under field conditions in the world.

A Technique for the Collection of Tyrophagus putrescentiae Eggs of Uniform Age

1967 ◽  
Vol 99 (1) ◽  
pp. 109-109 ◽  
Author(s):  
R. A. Sellen ◽  
P. S. Barker
Keyword(s):  
Food Products ◽  
Stored Products ◽  
Tyrophagus Putrescentiae ◽  
Acarus Siro

Among the acari there are many species that damage food products (Sinha 1964; Solomon 1936; Cunnington 1965). However, very little information is available on the effect of fumigation on these organisms. Amaro (1963) developed a technique for the fumigation of the eggs of Acarus siro L. that exploits some of the behaviour patterns and preferences of that species. Since this method cannot be applied to Tyrophagus putrescentiae (Schrank), a pest of stored products, an attempt was made to seek other methods by which eggs of this species of a reasonably uniform age could be obtained for fumigation.

scholarly journals Immunoglobulin E Binding Reactivity of a Recombinant Allergen Homologous to α-Tubulin from Tyrophagus putrescentiae

2005 ◽  
Vol 12 (12) ◽  
pp. 1451-1454 ◽  
Author(s):  
Kyoung Yong Jeong ◽  
Haeseok Lee ◽  
Jae Sik Lee ◽  
Jongweon Lee ◽  
In-Yong Lee ◽  
...  
Keyword(s):  
Amino Acid ◽  
Rural Areas ◽  
Urban Areas ◽  
Immunoglobulin E ◽  
Amino Acid Sequences ◽  
Cloning And Expression ◽  
Recombinant Allergen ◽  
Tyrophagus Putrescentiae ◽  
Storage Mites ◽  
Storage Mite

ABSTRACT Storage mites may cause allergic respiratory diseases in urban areas as well as pose an occupational hazard in rural areas. Characterization of storage mite allergens is important for the development of diagnostic and therapeutic agents against mite-associated allergic disorders. Here we report on the cloning and expression of α-tubulin from the storage mite (Tyrophagus putrescentiae). The deduced amino acid sequence of the α-tubulin from the storage mite showed as much as 97.3% identity to the α-tubulin sequences from other organisms. The highly conserved amino acid sequences of α-tubulins across different species of mites may indicate that cross-reactivity for this potential allergen exists. The frequency of immunoglobulin E reactivity of this recombinant protein is 29.3% in sera from storage mite-allergic subjects.

Inhibition of Fusarium Growth and Mycotoxin Production in Culture Medium and in Maize Kernels by Natural Phenolic Acids

2016 ◽  
Vol 79 (10) ◽  
pp. 1753-1758 ◽  
Author(s):  
ELENA FERRUZ ◽  
SUSANA LORAN ◽  
MARTA HERRERA ◽  
ISABEL GIMENEZ ◽  
NOEMI BERVIS ◽  
...  
Keyword(s):  
Phenolic Acids ◽  
Fusarium Species ◽  
Fungal Growth ◽  
Toxin Production ◽  
Inhibitory Effect ◽  
Fungal Species ◽  
Mycotoxin Production ◽  
Marked Inhibitory Effect ◽  
Total Inhibition ◽  
Maize Kernels

ABSTRACT The possible role of natural phenolic compounds in inhibiting fungal growth and toxin production has been of recent interest as an alternative strategy to the use of chemical fungicides for the maintenance of food safety. Fusarium is a worldwide fungal genus mainly associated with cereal crops. The most important Fusarium mycotoxins are trichothecenes, zearalenone, and fumonisins. This study was conducted to evaluate the potential of four natural phenolic acids (caffeic, ferulic, p-coumaric, and chlorogenic) for the control of mycelial growth and mycotoxin production by six toxigenic species of Fusarium. The addition of phenolic acids to corn meal agar had a marked inhibitory effect on the radial growth of all Fusarium species at levels of 2.5 to 10 mM in a dose-response pattern, causing total inhibition (100%) in all species except F. sporotrichioides and F. langsethiae. However, the effects of phenolic acids on mycotoxin production in maize kernels were less evident than the effects on growth. The fungal species differed in their responses to the phenolic acid treatments, and significant reductions in toxin concentrations were observed only for T-2 and HT-2 (90% reduction) and zearalenone (48 to 77% reduction). These results provide data that could be used for developing pre- and postharvest strategies for controlling Fusarium infection and subsequent toxin production in cereal grains.

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