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https://www.readbyqxmd.com/read/28719051/the-binding-mechanism-between-azoles-and-fgcyp51b-sterol-14%C3%AE-demethylase-of-fusarium-graminearum
#1
Hengwei Qian, Meilin Duan, Xiaomei Sun, Mengyu Chi, Ying Zhao, Wenxing Liang, Juan Du, Jinguang Huang, Baodu Li
BACKGROUND: Fusarium graminearum is the main pathogen of Fusarium Head Blight (FHB), a worldwide plant disease and one of the major wheat diseases in China. The control of the FHB is mainly dependent on the application of DMIs fungicides. Fungal sterol 14α-demethylase enzymes (CYP51) are the main target for DMIs fungicides. In order to investigate the binding mechanism between azoles and CYP51B in F.graminearum, the molecular modeling study and biological evaluation were performed. RESULTS: Firstly, the homology model based on the crystal structure of Aspergillus fumigatus was built...
July 18, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28703042/genome-wide-association-mapping-of-fusarium-head-blight-resistance-in-spring-wheat-lines-developed-in-the-pacific-northwest-and-cimmyt
#2
Rui Wang, Jianli Chen, James A Anderson, Junli Zhang, Weidong Zhao, Justin Wheeler, Natalie Klassen, Deven R See, Yanhong Dong
Fusarium head blight is a destructive disease of wheat in humid and semi-humid areas of the world. It has emerged in the Pacific Northwest (PNW) in recent years because of changing climate and crop rotation practices. Our objectives in the present study were to identify and characterize QTL associated with FHB resistance in spring wheat lines developed in the PNW and the International Maize and Wheat Improvement Center (CIMMYT). A total of 170 spring wheat lines were evaluated in field and greenhouse trials in 2015 and 2016...
July 13, 2017: Phytopathology
https://www.readbyqxmd.com/read/28656363/cytogenetic-mapping-of-a-major-locus-for-resistance-to-fusarium-head-blight-and-crown-rot-of-wheat-on-thinopyrum-elongatum-7el-and-its-pyramiding-with-valuable-genes-from-a-th-ponticum-homoeologous-arm-onto-bread-wheat-7dl
#3
Carla Ceoloni, Paola Forte, Ljiljana Kuzmanović, Silvio Tundo, Ilaria Moscetti, Pasquale De Vita, Maria Elena Virili, Renato D'Ovidio
A major locus for resistance to different Fusarium diseases was mapped to the most distal end of Th. elongatum 7EL and pyramided with Th. ponticum beneficial genes onto wheat 7DL. Perennial Triticeae species of the Thinopyrum genus are among the richest sources of valuable genes/QTL for wheat improvement. One notable and yet unexploited attribute is the exceptionally effective resistance to a major wheat disease worldwide, Fusarium head blight, associated with the long arm of Thinopyrum elongatum chromosome 7E (7EL)...
June 27, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28647118/screening-of-wheat-endophytes-as-biological-control-agents-against-fusarium-head-blight-using-two-different-in-vitro-tests
#4
Morgane Comby, Marie Gacoin, Mathilde Robineau, Fanja Rabenoelina, Sébastien Ptas, Joëlle Dupont, Camille Profizi, Fabienne Baillieul
In order to find biological control agents (BCAs) for the management of Fusarium head blight (FHB), a major disease on wheat crops worldwide, 86 microorganisms isolated from inner tissues of wheat plants were discriminated for their ability to inhibit the growth of Fusarium graminearum and Fusarium culmorum by in vitro dual culture assays. A group of 22 strains appeared very effective to inhibit F. graminearum (inhibition of 30-51%) and they were also globally effective in controlling F. culmorum (inhibition of 15-53%)...
September 2017: Microbiological Research
https://www.readbyqxmd.com/read/28612272/geographic-distribution-of-phylogenetic-species-of-the-fusarium-graminearum-species-complex-and-their-8-ketotrichothecene-chemotypes-on-wheat-spikes-in-iran
#5
Mostafa Abedi-Tizaki, Doustmorad Zafari
Isolates of the Fusarium graminearum species complex (FGSC, n = 446) were collected from wheat spikes from northern and western regions of Iran with a history of Fusarium head blight (FHB) occurrences. The trichothecene mycotoxin genotypes/chemotypes, the associated phylogenetic species, and geographical distribution of these isolates were analyzed. Two phylogenetic species, Fusarium asiaticum and F. graminearum, were identified and were found to belong to sequence characterized amplified region (SCAR) groups V and I...
August 2017: Mycotoxin Research
https://www.readbyqxmd.com/read/28555151/molecular-cytogenetic-characterization-of-two-triticum-secale-thinopyrum-trigeneric-hybrids-exhibiting-superior-resistance-to-fusarium-head-blight-leaf-rust-and-stem-rust-race-ug99
#6
Yi Dai, Yamei Duan, Huiping Liu, Dawn Chi, Wenguang Cao, Allen Xue, Yong Gao, George Fedak, Jianmin Chen
Fusarium head blight (FHB), leaf rust, and stem rust are the most destructive fungal diseases in current world wheat production. The diploid wheatgrass, Thinopyrum elongatum (Host) Dewey (2n = 2x = 14, EE) is an excellent source of disease resistance genes. Two new Triticum-Secale-Thinopyrum trigeneric hybrids were derived from a cross between a hexaploid triticale (X Triticosecale Wittmack, 2n = 6x = 42, AABBRR) and a hexaploid Triticum trititrigia (2n = 6x = 42, AABBEE), were produced and analyzed using genomic in situ hybridization and molecular markers...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28510187/identification-and-trichothecene-genotypes-of-fusarium-graminearum-species-complex-from-wheat-in-taiwan
#7
Chih-Li Wang, Yi-Hong Cheng
BACKGROUND: Fusarium head blight (FHB) of wheat caused by Fusarium graminearum species complex (FGSC) is a devastating disease worldwide. The pathogens not only reduce the yield of wheat, but also impact the quality of wheat by contamination with trichothecene mycotoxins. A systematic investigation on the pathogens of FHB in Taiwan is lacking. Here, molecular and morphological approaches were used to identify species of the Taiwanese FGSC isolates and determine their trichothecene genotypes...
December 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28414109/synthesis-and-characterization-of-chitosan-nanoparticles-and-their-effect-on-fusarium-head-blight-and-oxidative-activity-in-wheat
#8
A Kheiri, S A Moosawi Jorf, A Malihipour, H Saremi, M Nikkhah
The main aim of present study was to prepare chitosan (CS) and chitosan nanoparticles (CS/NPs) to evaluate their antifungal and oxidative activity. CS/NPs were prepared based on the ionic gelation of CS with tripolyphosphate (TPP) anions by using centrifugation and pH change. The obtained nanoparticles (NPs) were characterized by size and zeta potential analysis. The antifungal activity of the CS and CS/NPs were evaluated on the Fusarium graminearum, which causes Fusarium head blight (FHB) on wheat by the method of spraying on the Potato dextrose agar (PDA) medium...
September 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28411402/transcriptomics-of-cereal-fusarium-graminearum-interactions-what-we-have-learned-so-far
#9
REVIEW
Kemal Kazan, Donald M Gardiner
The ascomycete fungal pathogen Fusarium graminearum causes the globally important Fusarium head blight (FHB) disease on cereal hosts, such as wheat and barley. In addition to reducing grain yield, infection by this pathogen causes major quality losses. In particular, the contamination of food and feed with the F. graminearum trichothecene toxin deoxynivalenol (DON) can have many adverse short- and long-term effects on human and animal health. During the last decade, the interaction between F. graminearum and both cereal and model hosts has been extensively studied through transcriptomic analyses...
April 15, 2017: Molecular Plant Pathology
https://www.readbyqxmd.com/read/28392426/population-genetic-structure-and-mycotoxin-potential-of-the-wheat-crown-rot-and-head-blight-pathogen-fusarium-culmorum-in-algeria
#10
Imane Laraba, Houda Boureghda, Nora Abdallah, Oussama Bouaicha, Friday Obanor, Antonio Moretti, David M Geiser, Hye-Seon Kim, Susan P McCormick, Robert H Proctor, Amy C Kelly, Todd J Ward, Kerry O'Donnell
Surveys for crown rot (FCR) and head blight (FHB) of Algerian wheat conducted during 2014 and 2015 revealed that Fusarium culmorum strains producing 3-acetyl-deoxynivalenol (3ADON) or nivalenol (NIV) were the causal agents of these important diseases. Morphological identification of the isolates (n FCR=110, n FHB=30) was confirmed by sequencing a portion of TEF1. To assess mating type idiomorph, trichothecene chemotype potential and global population structure, the Algerian strains were compared with preliminary sample of F...
June 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28319793/early-response-of-wheat-antioxidant-system-with-special-reference-to-fusarium-head-blight-stress
#11
Valentina Spanic, Marija Viljevac Vuletic, Ivan Abicic, Tihana Marcek
Fusarium head blight (FHB) is a destructive fungal disease of wheat (Triticum aestivum L.) that causes significant grain yield losses and end-use quality reduction associated with contamination by the mycotoxin deoxynivalenol (DON). Three winter wheat varieties ('Vulkan', 'Kraljica' and 'Golubica') were screened for FHB resistance using artificial inoculation technique under field conditions. The aim of this study was to examine a relationship between FHB resistance and the effectiveness of enzyme antioxidant system of wheat varieties under different sampling times (3, 15, 24, 48, 96, 120 and 336 hai)...
June 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28231525/construction-of-new-est-ssrs-for-fusarium-resistant-wheat-breeding
#12
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/28212314/a-gin4-like-protein-kinase-gil1-involvement-in-hyphal-growth-asexual-development-and-pathogenesis-in-fusarium-graminearum
#13
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/28198421/tawrky70-transcription-factor-in-wheat-qtl-2dl-regulates-downstream-metabolite-biosynthetic-genes-to-resist-fusarium-graminearum-infection-spread-within-spike
#14
Udaykumar Kage, Kalenahalli N Yogendra, Ajjamada C Kushalappa
A semi-comprehensive metabolomics was used to identify the candidate metabolites and genes to decipher mechanisms of resistance in wheat near-isogenic lines (NILs) containing QTL-2DL against Fusarium graminearum (Fg). Metabolites, with high fold-change in abundance, belonging to hydroxycinnamic acid amides (HCAAs): such as coumaroylagmatine, coumaroylputrescine and Fatty acids: phosphatidic acids (PAs) were identified as resistance related induced (RRI) metabolites in rachis of resistant NIL (NIL-R), inoculated with Fg...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28163582/mapping-a-qtl-conferring-resistance-to-fusarium-head-blight-on-chromosome-1b-in-winter-wheat-triticum-aestivum-l
#15
Zenta Nishio, Chihiro Onoe, Miwako Ito, Tadashi Tabiki, Koichi Nagasawa, Hideho Miura
Fusarium head blight (FHB) is one of the most devastating diseases of wheat (Triticum aestivum L.), and the development of cultivars with FHB resistance is the most effective way to control the disease. Yumechikara is a Japanese hard red winter wheat cultivar that shows moderate resistance to FHB with superior bread-making quality. To identify quantitative trait loci (QTLs) for FHB resistance in Yumechikara, we evaluated doubled haploid lines derived from a cross between Yumechikara and a moderate susceptible cultivar, Kitahonami, for FHB resistance in a 5-year field trial, and we analyzed polymorphic molecular markers between the parents...
December 2016: Breeding Science
https://www.readbyqxmd.com/read/28080216/occurrence-of-mycotoxins-in-wheat-grains-exposed-to-fungicides-on-fusarium-head-blight-control-in-southern-brazil
#16
Leandro N Marques, Ionara R Pizzutti, Ricardo S Balardin, Ingrid D Dos Santos, Jonatan V Dias, Marlon T Stefanello, Pablo T Serafini
Mycotoxins occurrence in wheat grains impose risks to human and animal health. The southern Brazil has favorable weather conditions for Fusarium graminearum infections and consequently for mycotoxins accumulation on grains. The goal of this study was to evaluate the behavior of new wheat commercial genotypes to Fusarium Head Blight (FHB), to control performance of new fungicide formulations and their relationship with mycotoxins concentration in grains. The manly mycotoxin occurrence on wheat grains in southern Brazil was deoxynivalenol (DON)...
April 3, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27898755/examining-the-transcriptional-response-in-wheat-near-isogenic-lines-to-infection-and-deoxynivalenol-treatment
#17
Anna N Hofstad, Thomas Nussbaumer, Eduard Akhunov, Sanghyun Shin, Karl G Kugler, H Corby Kistler, Klaus F X Mayer, Gary J Muehlbauer
head blight (FHB) is a disease caused predominantly by the fungal pathogen that affects wheat and other small-grain cereals and can lead to severe yield loss and reduction in grain quality. Trichothecene mycotoxins, such as deoxynivalenol (DON), accumulate during infection and increase pathogen virulence and decrease grain quality. The locus on wheat chromosome 3BS confers Type II resistance to FHB and resistance to the spread of infection on the spike and has been associated with resistance to DON accumulation...
March 2016: Plant Genome
https://www.readbyqxmd.com/read/27898754/genome-wide-association-mapping-of-fusarium-head-blight-resistance-in-wheat-using-genotyping-by-sequencing
#18
Marcio P Arruda, Patrick Brown, Gina Brown-Guedira, Allison M Krill, Carrie Thurber, Keith R Merrill, Bradley J Foresman, Frederic L Kolb
Fusarium head blight (FHB) is one of the most important wheat ( L.) diseases worldwide, and host resistance displays complex genetic control. A genome-wide association study (GWAS) was performed on 273 winter wheat breeding lines from the midwestern and eastern regions of the United States to identify chromosomal regions associated with FHB resistance. Genotyping-by-sequencing (GBS) was used to identify 19,992 single-nucleotide polymorphisms (SNPs) covering all 21 wheat chromosomes. Marker-trait associations were performed with different statistical models, the most appropriate being a compressed mixed linear model (cMLM) controlling for relatedness and population structure...
March 2016: Plant Genome
https://www.readbyqxmd.com/read/27866226/high-accuracy-of-predicting-hybrid-performance-of-fusarium-head-blight-resistance-by-mid-parent-values-in-wheat
#19
Thomas Miedaner, Albert W Schulthess, Manje Gowda, Jochen C Reif, C Friedrich H Longin
Mid-parent values of Fusarium head blight (FHB) resistance tested across several locations are a good predictor of hybrid performance caused by a preponderance of additive gene action in wheat. Hybrid breeding is intensively discussed as one solution to boost yield and yield stability including an enhanced biotic stress resistance. Our objectives were to investigate (1) the heterosis for Fusarium head blight (FHB) resistance, (2) the importance of general (GCA) vs. specific combining ability (SCA) for FHB resistance, and (3) the possibility to predict the FHB resistance of the hybrids by the parental means...
February 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27844244/metabolo-transcriptome-profiling-of-barley-reveals-induction-of-chitin-elicitor-receptor-kinase-gene-hvcerk1-conferring-resistance-against-fusarium-graminearum
#20
Shailesh Karre, Arun Kumar, Dhananjay Dhokane, Ajjamada C Kushalappa
We report plausible disease resistance mechanisms induced by barley resistant genotype CI89831 against Fusarium head blight (FHB) based on metabolo-transcriptomics approach. We identified HvCERK1 as a candidate gene for FHB resistance, which is functional in resistant genotype CI9831 but non-functional in susceptible cultivars H106-371 and Zhedar-2. For the first time, we were able to show a hierarchy of regulatory genes that regulated downstream biosynthetic genes that eventually produced resistance related metabolites that reinforce the cell walls to contain the pathogen progress in plant...
February 2017: Plant Molecular Biology
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