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https://www.readbyqxmd.com/read/28231525/construction-of-new-est-ssrs-for-fusarium-resistant-wheat-breeding
#1
Aysen Yumurtaci, Hulya Sipahi, Ayed Al-Abdallat, Abdulqader Jighly, Michael Baum
Surveying Fusarium resistance in wheat with easy applicable molecular markers such as simple sequence repeats (SSRs) is a prerequest for molecular breeding. Expressed sequence tags (ESTs) are one of the main sources for development of new SSR candidates. Therefore, 18.292 publicly available wheat ESTs were mined and genotyping of newly developed 55 EST-SSR derived primer pairs produced clear fragments in ten wheat cultivars carrying different levels of Fusarium resistance. Among the proved markers, 23 polymorphic EST-SSRs were obtained and related alleles were mostly found on B and D genome...
February 11, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28230182/suppression-of-fusarium-wilt-of-cucumber-by-ammonia-gas-fumigation-via-reduction-of-fusarium-population-in-the-field
#2
Jun Zhao, Zhong Mei, Xu Zhang, Chao Xue, Chenzhi Zhang, Tengfei Ma, Shusheng Zhang
Cucumber plants subjected to consecutive monoculture for 9 years were found to suffer from severe Fusarium wilt disease, caused by the soil-borne fungus Fusarium oxysporum f. sp. Cucumerinum J. H. Owen. In the present study, greenhouse experiments were performed to evaluate the influence of ammonia gas fumigation on Fusarium wilt suppression, fungal abundance and fungal community composition. Results showed that ammonia gas fumigation remarkably reduced disease incidence from 80% to 27%, resulting in a four-fold increase in yield, compared to the control...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28229023/toxgen-an-improved-reference-database-for-the-identification-of-type-b-trichothecene-genotypes-in-fusarium
#3
Tomasz Kulik, Kessy Abarenkov, Maciej Buśko, Katarzyna Bilska, Anne D van Diepeningen, Anna Ostrowska-Kołodziejczak, Katarzyna Krawczyk, Balázs Brankovics, Sebastian Stenglein, Jakub Sawicki, Juliusz Perkowski
Type B trichothecenes, which pose a serious hazard to consumer health, occur worldwide in grains. These mycotoxins are produced mainly by three different trichothecene genotypes/chemotypes: 3ADON (3-acetyldeoxynivalenol), 15ADON (15-acetyldeoxynivalenol) and NIV (nivalenol), named after these three major mycotoxin compounds. Correct identification of these genotypes is elementary for all studies relating to population surveys, fungal ecology and mycotoxicology. Trichothecene producers exhibit enormous strain-dependent chemical diversity, which may result in variation in levels of the genotype's determining toxin and in the production of low to high amounts of atypical compounds...
2017: PeerJ
https://www.readbyqxmd.com/read/28224922/multiple-garlic-allium-sativum-l-micrornas-regulate-the-immunity-against-the-basal-rot-fungus-fusarium-oxysporum-f-sp-cepae
#4
Subodh Kumar Chand, Satyabrata Nanda, Rukmini Mishra, Raj Kumar Joshi
The basal plate rot fungus, Fusarium oxysporum f. sp. cepae (FOC), is the most devastating pathogen posing a serious threat to garlic (Allium sativum L.) production worldwide. MicroRNAs (miRNAs) are key modulators of gene expression related to development and defense responses in eukaryotes. However, the miRNA species associated with garlic immunity against FOC are yet to be explored. In the present study, a small RNA library developed from FOC infected resistant garlic line was sequenced to identify immune responsive miRNAs...
April 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28224223/agarwood-formation-induced-by-fermentation-liquid-of-lasiodiplodia-theobromae-the-dominating-fungus-in-wounded-wood-of-aquilaria-sinensis
#5
Xuyu Chen, Chun Sui, Yangyang Liu, Yun Yang, Peiwei Liu, Zheng Zhang, Jianhe Wei
Agarwood is broadly used in incense and medicine. Traditionally, agarwood formation is induced by wounding the trunks and branches of some species of Aquilaria spp., including A. sinensis. As recently evidenced, some fungi or their fermentation liquid may have the potential of inducing agarwood formation. The present study aimed to analyze the fungi isolated from an agarwood-producing A. sinensis tree and subsequently identify the fungi capable of promoting agarwood formation. We identified a total of 110 fungi isolates based on their morphological characteristics and rDNA ITS sequences...
February 21, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28222253/flow-cytometry-based-rapid-duplexed-immunoassay-for-fusarium-mycotoxins
#6
Árpád Czéh, Miklós Mézes, Francis Mandy, Zsuzsanna Szőke, György Nagyéri, Noémi Laufer, Balázs Kőszegi, Tamás Koczka, Sándor Kunsági-Máté, György Lustyik
At small food processing facilities, the most frequently used test to determine if grain-derived mycotoxin concentrations are compliant with legal limits is the enzyme-linked immunosorbent assay (ELISA). Each kit is designed to detect one of the six dangerous mycotoxins. With the increasing occurrence of coinfection of grain with multiple-mycotoxins in the field and/or during storage, ELISA is no longer a cost effective best assay option. With ELISA, each species of mycotoxin requires different sample preparation/extraction and a 45 min incubation...
February 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28221941/the-hap-complex-governs-fumonisin-biosynthesis-and-maize-kernel-pathogenesis-in-fusarium-verticillioides
#7
John B Ridenour, Jonathon E Smith, Burton H Bluhm
Contamination of maize ( Zea mays ) with fumonisins produced by the fungus Fusarium verticillioides is a global concern for food safety. Fumonisins are a group of polyketide-derived secondary metabolites linked to esophageal cancer and neural tube birth defects in humans and numerous toxicoses in livestock. Despite the importance of fumonisins in global maize production, the regulation of fumonisin biosynthesis during kernel pathogenesis is poorly understood. The HAP complex is a conserved, heterotrimeric transcriptional regulator that binds the consensus sequence CCAAT to modulate gene expression...
September 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221876/effect-of-magnesium-acetate-on-the-antimold-activity-of-lactobacillus
#8
Katarzyna Kycia, Anna Bzducha-Wróbel, Karolina Kraśniewska, Anna Chlebowska-Śmigiel, Małgorzata Gniewosz
The antimold activity of lactic acid bacteria (LAB) is used in food biopreservation. The aim of this study was to evaluate the effect of magnesium acetate added to de Man Rogosa Sharpe (MRS) medium on the antimold activity of three LAB strains ( Lactobacillus plantarum , Lactobacillus brevis , and Lactobacillus fermentum ) against molds contaminating food ( Aspergillus oryzae , Aspergillus niger , Penicillium chrysogenum , Fusarium avenaceum , and Rhizopus arrhizus ) and their ability to produce organic acids (acetic acid, lactic acid, and phenyllactic acid)...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221850/effectiveness-of-neutral-electrolyzed-water-on-incidence-of-fungal-rot-on-tomato-fruits-solanum-lycopersicum-l
#9
Alfonso Vásquez-López, Tania Villarreal-Barajas, Gerardo Rodríguez-Ortiz
We assessed the effect of neutral electrolyzed water (NEW) on the incidence of rot on tomato ( Solanum lycopersicum L.) fruits inoculated with Fusarium oxysporum , Galactomyces geotrichum , and Alternaria sp. at sites with lesions. The inoculated fruits were treated with NEW at 10, 30, and 60 mg liter(-1) active chlorine, with copper oxychloride fungicide, and with sterile distilled water (control) for 3, 5, and 10 min. In the experiment with F. oxysporum , 50 to 80% of the control fruits and 50 to 60% of the fruits treated with the fungicide exhibited symptoms of rot at the inoculated sites...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221840/inhibition-of-fusarium-growth-and-mycotoxin-production-in-culture-medium-and-in-maize-kernels-by-natural-phenolic-acids
#10
Elena Ferruz, Susana Loran, Marta Herrera, Isabel Gimenez, Noemi Bervis, Carmen Barcena, Juan Jose Carramiñana, Teresa Juan, Antonio Herrera, Agustin Ariño
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 ...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28220202/enzyme-inhibitory-metabolites-from-endophytic-penicillium-citrinum-isolated-from-boswellia-sacra
#11
Sajid Ali, Abdul Latif Khan, Liaqat Ali, Tania Shamim Rizvi, Sumera Afzal Khan, Javid Hussain, Muhammad Hamayun, Ahmed Al-Harrasi
Fungal endophytes establish an important niche within the host plant through the secretion of chemical constituents. Isolation of bioactive metabolites could be a vital source for inhibiting the function of enzymes such as α-glucosidase and urease. The present study aimed to elucidate the potential of endophytes associated with Boswellia sacra through bioassay-guided isolation and identification of secondary metabolites with enzyme inhibitory ability. Endophytic fungal strains viz. Penicillium citrinum, P...
February 20, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28218299/expression-and-distribution-of-extensins-and-agps-in-susceptible-and-resistant-banana-cultivars-in-response-to-wounding-and-fusarium-oxysporum
#12
Yunli Wu, Wei Fan, Xiaoquan Li, Houbin Chen, Tomáš Takáč, Olga Šamajová, Musana Rwalinda Fabrice, Ling Xie, Juan Ma, Jozef Šamaj, Chunxiang Xu
Banana Fusarium wilt caused by Fusarium oxysporum f. sp. cubense (Foc) is soil-borne disease of banana (Musa spp.) causing significant economic losses. Extensins and arabinogalactan proteins (AGPs) are cell wall components important for pathogen defence. Their significance for Foc resistance in banana was not reported so far. In this study, two banana cultivars differing in Foc sensitivity were used to monitor the changes in transcript levels, abundance and distribution of extensins and AGPs after wounding and Foc inoculation...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28218268/rapid-and-sensitive-diagnoses-of-dry-root-rot-pathogen-of-chickpea-rhizoctonia-bataticola-taub-butler-using-loop-mediated-isothermal-amplification-assay
#13
Raju Ghosh, Avijit Tarafdar, Mamta Sharma
Dry root rot (DRR) caused by the fungus Rhizoctonia bataticola (Taub.) Butler, is an emerging disease in chickpea. The disease is often mistaken with other root rots like Fusarium wilt, collar rot and black root rot in chickpea. Therefore, its timely and specific detection is important. Current detection protocols are either based on mycological methods or on protocols involving DNA amplification by polymerase chain reaction (PCR). Here we report the rapid and specific detection of R. bataticola using loop-mediated isothermal amplification (LAMP) assay targeting fungal specific 5...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28217904/development-of-microextraction-techniques-in-combination-with-gc-ms-ms-for-the-determination-of-mycotoxins-and-metabolites-in-human-urine
#14
Yelko Rodríguez-Carrasco, Juan Carlos Moltó, Jordi Mañes, Houda Berrada
Simple and highly efficient sample preparation procedures, namely, dispersive liquid-liquid microextraction and salting-out liquid-liquid extraction for the analysis of ten Fusarium mycotoxins and metabolites in human urine were compared. Various parameters affecting extraction efficiency were carefully evaluated. Under optimal extraction conditions, salting-out liquid-liquid extraction showed a better accuracy (84-96%) and precision (<14%) than dispersive liquid-liquid microextraction. Hence, a multi-biomarker method based on salting-out liquid-liquid extraction followed by gas chromatography with tandem mass spectrometry was proposed...
February 20, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28213660/evidence-of-an-unidentified-extracellular-heat-stable-factor-produced-by-lysobacter-enzymogenes-oh11-that-degrade-fusarium-graminearum-ph1-hyphae
#15
Benard Omondi Odhiambo, Gaoge Xu, Guoliang Qian, Fengquan Liu
Lysobacter enzymogenes OH11 produces heat-stable antifungal factor (HSAF) and lytic enzymes possessing antifungal activity. This study bio-prospected for other potential antifungal factors besides those above. The cells and extracellular metabolites of L. enzymogenes OH11 and the mutants ΔchiA, ΔchiB, ΔchiC, Δclp, Δpks, and ΔpilA were examined for antifungal activity against Fusarium graminearum PH1, the causal agent of Fusarium head blight (FHB). Results evidenced that OH11 produces an unidentified extracellular heat-stable degrading metabolite (HSDM) that exhibit degrading activity on F...
February 17, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28213318/efficacy-of-fungal-and-bacterial-antagonists-for-controlling-growth-fum1-gene-expression-and-fumonisin-b1-production-by-fusarium-verticillioides-on-maize-cobs-of-different-ripening-stages
#16
Nik Iskandar Putra Samsudin, Alicia Rodriguez, Angel Medina, Naresh Magan
This study was carried out to examine the efficacy of two biocontrol agents (Clonostachys rosea 016, BCA1; Gram-negative bacterium, BCA5) for control of FUM1 gene expression and fumonisin B1 (FB1) production by F. verticillioides FV1 on maize cobs of different ripening stages: R3, Milk (0.985 aw); R4, Dough (0.976 aw); R5, Dent (0.958 aw). Initially, temporal studies on FUM1 gene expression and FB1 production were performed on maize kernels for up to 14days. This revealed that day 10 was optimum for both parameters, and was used in the biocontrol studies...
February 9, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28212314/a-gin4-like-protein-kinase-gil1-involvement-in-hyphal-growth-asexual-development-and-pathogenesis-in-fusarium-graminearum
#17
Dan Yu, Shijie Zhang, Xiaoping Li, Jin-Rong Xu, Zachary Schultzhaus, Qiaojun Jin
Fusarium graminearum is the main causal agent of Fusarium head blight (FHB) on wheat and barley. In a previous study, a GIN4-like protein kinase gene, GIL1, was found to be important for plant infection and sexual reproduction. In this study we further characterized the functions of GIL1 kinase in different developmental processes. The Δgil1 mutants were reduced in growth, conidiation, and virulence, and formed whitish and compact colonies. Although phialide formation was rarely observed in the mutants, deletion of GIL1 resulted in increased hyphal branching and increased tolerance to cell wall and cell membrane stresses...
February 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28209821/draft-genome-sequence-of-an-isolate-of-fusarium-oxysporum-f-sp-melongenae-the-causal-agent-of-fusarium-wilt-of-eggplant
#18
Zhangyong Dong, Tom Hsiang, Mei Luo, Meimei Xiang
Here, we present the genome sequence of an isolate (14004) of Fusarium oxysporum f. sp. melongenae, an eggplant pathogen. The final assembly consists of 1,631 scaffolds with 53,986,354 bp (G+C content, 46.4%) and 16,485 predicted genes.
February 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28208765/synthesis-of-mono-and-di-glucosides-of-zearalenone-and-%C3%AE-%C3%AE-zearalenol-by-recombinant-barley-glucosyltransferase-hvugt14077
#19
Herbert Michlmayr, Elisabeth Varga, Francesca Lupi, Alexandra Malachová, Christian Hametner, Franz Berthiller, Gerhard Adam
Zearalenone (ZEN) is an estrogenic mycotoxin occurring in Fusarium-infected cereals. Glucosylation is an important plant defense mechanism and generally reduces the acute toxicity of mycotoxins to humans and animals. Toxicological information about ZEN-glucosides is limited due to the unavailability of larger amounts required for animal studies. HvUGT14077, a recently-validated ZEN-conjugating barley UDP-glucosyltransferase was expressed in Escherichia coli, affinity purified, and characterized. HvUGT14077 possesses high affinity (Km = 3 µM) and catalytic efficiency (kcat/Km = 190 s(-1)·mM(-1)) with ZEN...
February 9, 2017: Toxins
https://www.readbyqxmd.com/read/28208710/metabolism-of-zearalenone-and-its-major-modified-forms-in-pigs
#20
Sabina B Binder, Heidi E Schwartz-Zimmermann, Elisabeth Varga, Gerlinde Bichl, Herbert Michlmayr, Gerhard Adam, Franz Berthiller
The Fusarium mycotoxin zearalenone (ZEN) can be conjugated with polar molecules, like sugars or sulfates, by plants and fungi. To date, the fate of these modified forms of ZEN has not yet been elucidated in animals. In order to investigate whether ZEN conjugates contribute to the total ZEN exposure of an individual, ZEN (10 µg/kg b.w.) and equimolar amounts of two of its plant metabolites (ZEN-14-O-β-glucoside, ZEN-16-O-β-glucoside) and of one fungal metabolite (ZEN-14-sulfate) were orally administered to four pigs as a single bolus using a repeated measures design...
February 8, 2017: Toxins
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