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https://www.readbyqxmd.com/read/29156605/performance-indices-in-wheat-chlorophyll-a-fluorescence-and-protein-quality-influenced-by-fhb
#1
Valentina Spanic, Marija Viljevac Vuletic, Georg Drezner, Zvonimir Zdunic, Daniela Horvat
Very little is known about the physiological interactions between wheat quality and Fusarium head blight (FHB), which substantially reduces wheat grain yield and quality worldwide. In order to investigate stress-induced changes in flag leaves from plants artificially inoculated with Fusarium, we screened for chlorophyll a fluorescence transient at 1, 2, 4, 7 and 14 days after Fusarium inoculation. Our results indicate that the maximum quantum yield of photochemistry (Fv/Fm) and the performance index (PI) were not affected by FHB, but there were significant differences in those two traits between different varieties and measurement times...
November 20, 2017: Pathogens
https://www.readbyqxmd.com/read/29122868/genome-sequence-of-fusarium-graminearum-item-124-atcc-56091-a-mycotoxigenic-plant-pathogen
#2
Antonio Zapparata, Daniele Da Lio, Stefania Somma, Isabel Vicente Muñoz, Luca Malfatti, Giovanni Vannacci, Antonio Moretti, Riccardo Baroncelli, Sabrina Sarrocco
Fusarium graminearum is among the main causal agents of Fusarium head blight (FHB), or scab, of wheat and other cereals, caused by a complex of Fusarium species, worldwide. Besides causing economic losses in terms of crop yield and quality, F. graminearum poses a severe threat to animal and human health. Here, we present the first draft whole-genome sequence of the mycotoxigenic Fusarium graminearum strain ITEM 124, also providing useful information for comparative genomics studies.
November 9, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29063821/single-nucleotide-polymorphisms-in-b-genome-specific-udp-glucosyl-transferases-associated-with-fusarium-head-blight-resistance-and-reduced-deoxynivalenol-accumulation-in-wheat-grain
#3
Pallavi Sharma, Manu P Gangola, Chen Huang, H Randy Kutcher, Seedhabadee Ganeshan, Ravindra N Chibbar
An in vitro spike culture method was optimized to evaluate Fusarium head blight (FHB) resistance in wheat (Triticum aestivum) and used to screen a population of ethyl methane sulfonate treated spike culture-derived variants (SCDV). Of the 134 SCDV evaluated, the disease severity score of 47 of the variants was ≤30%. Single nucleotide polymorphisms (SNP) in the UDP-glucosyltransferase (UGT) genes, TaUGT-2B, TaUGT-3B, and TaUGT-EST, differed between AC Nanda (an FHB-susceptible wheat variety) and Sumai-3 (an FHB-resistant wheat cultivar)...
November 17, 2017: Phytopathology
https://www.readbyqxmd.com/read/28913807/phenotypic-characterization-of-transgenic-wheat-lines-against-fungal-pathogens-puccinia-triticina-and-fusarium-graminearum
#4
Jagdeep Kaur, Dilip Shah, John Fellers
Leaf rust (LR) and Fusarium head blight (FHB) caused by Puccinia triticina and Fusarium graminearum, respectively, are among the most damaging fungal diseases challenging wheat production worldwide. Genetic resistance in combination with fungicide application has been the most widely employed approach to combat these fungal pathogens. Alternative approaches that could augment current practices are needed for the control of these devastating pathogens. To that end, we have recently shown that the extracellular expression of antifungal defensin MtDEF4...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28758925/analysis-of-the-masked-metabolite-of-deoxynivalenol-and-fusarium-resistance-in-cimmyt-wheat-germplasm
#5
Hiroyuki Nakagawa, Xinyao He, Yosuke Matsuo, Pawan K Singh, Masayo Kushiro
Fusarium head blight (FHB) causes significant grain loss and contamination of grains with harmful mycotoxins, especially deoxynivalenol (DON). Fusarium resistance and DON accumulation have been extensively investigated in various cultivars; however, the level of DON-3-O-glucoside (D3G) has not been as carefully studied. In this study, we measured accumulated DON and D3G levels in CIMMYT wheat elite germplasm using an analytical method validated in-house. Co-occurring nivalenol (NIV) and ergostrerol (ERG) were also analyzed...
July 29, 2017: Toxins
https://www.readbyqxmd.com/read/28719051/the-binding-mechanism-between-azoles-and-fgcyp51b-sterol-14%C3%AE-demethylase-of-fusarium-graminearum
#6
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
#7
Rui Wang, Jianli Chen, James A Anderson, Junli Zhang, Weidong Zhao, Justin Wheeler, Natalie Klassen, Deven R See, Yanhong Dong
Fusarium head blight (FHB) is a destructive disease of wheat in humid and semihumid 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 quantitative trait loci (QTL) associated with FHB resistance in spring wheat lines developed in the PNW and the International Maize and Wheat Improvement Center. In total, 170 spring wheat lines were evaluated in field and greenhouse trials in 2015 and 2016...
December 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
#8
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)...
October 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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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