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https://www.readbyqxmd.com/read/28332274/time-course-expression-qtl-atlas-of-the-global-transcriptional-response-of-wheat-to-fusarium-graminearum
#1
Mina Samad-Zamini, Wolfgang Schweiger, Thomas Nussbaumer, Klaus F X Mayer, Hermann Buerstmayr
Fusarium head blight is a devastating disease of small grain cereals such as bread wheat (Triticum aestivum). The pathogen switches from a biotrophic to a nectrotrophic lifestyle in course of disease development forcing its host to adapt its defence strategies. Using a genetical genomics approach we illustrate genome-wide reconfigurations of genetic control over transcript abundances between two decisive time points after inoculation with the causative pathogen Fusarium graminearum. Whole transcriptome measurements have been recorded for 163 lines of a wheat doubled haploid population segregating for several resistance genes yielding 15 552 at 30 hours and 15 888 eQTL at 50 hours after inoculation...
March 23, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28330332/response-surface-methodology-based-optimization-of-production-media-and-purification-of-%C3%AE-galactosidase-in-solid-state-fermentation-by-fusarium-moniliforme-ncim-1099
#2
Sanjivani B Gajdhane, Prashant K Bhagwat, Padma B Dandge
Response surface methodology was used to enhance the production of α-galactosidase from Fusarium moniliforme NCIM 1099 in solid-state fermentation. Plackett-Burman design was employed for selection of critical media constituents which were optimized by central composite rotatable design. Wheat bran, peptone and FeSO4·7H2O were identified as significant medium components using PB design. Further CCRD optimized medium components as wheat bran; 4.62 μg, peptone; 315.42 μg, FeSO4·7H2O; 9.04 μg. RSM methodological optimization increased the enzyme production from 13...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330127/diversity-of-toxic-and-phytopathogenic-fusarium-species-occurring-on-cereals-grown-in-karnataka-state-india
#3
H Nagaraja, G Chennappa, K Poorna Chandra Rao, G Mahadev Prasad, M Y Sreenivasa
A total of 198 cereal samples (53 maize, 54 sorghum, 37 paddy and 54 wheat) were collected from 11 districts of Karnataka to understand the percent infection (PI), relative density (RD) and their frequency (Fr) caused by Fusarium spp. All samples were screened by agar plating method using MGA 2.5 agar media and incubated at 25 ± 2 °C for 3-5 days. The study revealed the association of 10 different Fusarium species known trichothecene producers such as Fusarium acuminatum, F. avenaceum, F. crookwellense, F...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28323242/investigation-of-the-indigenous-fungal-community-populating-barley-grains-secretomes-and-xylanolytic-potential
#4
Abida Sultan, Jens C Frisvad, Birgit Andersen, Birte Svensson, Christine Finnie
The indigenous fungal species populating cereal grains produce numerous plant cell wall-degrading enzymes including xylanases, which could play important role in plant-pathogen interactions and in adaptation of the fungi to varying carbon sources. To gain more insight into the grain surface-associated enzyme activity, members of the populating fungal community were isolated, and their secretomes and xylanolytic activities assessed. Twenty-seven different fungal species were isolated from grains of six barley cultivars over different harvest years and growing sites...
March 17, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28322011/fcrav2-a-gene-with-rogdi-domain-involved-in-fusarium-head-blight-and-crown-rot-on-durum-wheat-caused-by-fusarium-culmorum
#5
Francesca Spanu, Barbara Scherm, Irene Camboni, Virgilio Balmas, Giovanna Pani, Safa Oufensou, Nicolo' Macciotta, Matias Pasquali, Quirico Migheli
Fusarium culmorum is a soil-borne fungal pathogen able to cause foot and root rot and Fusarium head blight on small grain cereals, particularly on wheat and barley. It causes significant yield and quality loss and results in the contamination of kernels with type B trichothecene mycotoxins. Knowledge on pathogenicity factors of this fungus is still limited. A transposon tagging approach based on the mimp1/impala double component system has allowed us to select a mutant altered in multiple metabolic and morphological processes, trichothecene production and virulence...
March 21, 2017: Molecular Plant Pathology
https://www.readbyqxmd.com/read/28319793/early-response-of-wheat-antioxidant-system-with-special-reference-to-fusarium-head-blight-stress
#6
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)...
March 14, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28306726/fitness-of-three-chemotypes-of-fusarium-graminearum-species-complex-in-major-winter-wheat-producing-areas-of-china
#7
Yang-Yang Liu, Han-Yan Sun, Wei Li, Yun-Lei Xia, Yuan-Yu Deng, Ai-Xiang Zhang, Huai-Gu Chen
In China, Fusarium head blight is caused mainly by the Fusarium graminearum species complex (FGSC), which produces trichothecene toxins. The FGSC is divided into three chemotypes: 3-acetyldeoxynivalenol (3-ADON), 15-acetyldeoxynivalenol (15-ADON), and nivalenol (NIV). In order to predict the geographical changes in the distribution of these chemotype populations in major winter wheat-producing areas in China, the biological characteristics of twenty randomly selected isolates from each of the three chemotypes were studied...
2017: PloS One
https://www.readbyqxmd.com/read/28261228/characterization-of-the-two-speed-subgenomes-of-fusarium-graminearum-reveals-the-fast-speed-subgenome-specialized-for-adaption-and-infection
#8
Qinhu Wang, Cong Jiang, Chenfang Wang, Changjun Chen, Jin-Rong Xu, Huiquan Liu
Fusarium head blight, caused by Fusarium graminearum, is one of the most severe diseases on wheat and barley worldwide. Although the genomic data of several strains were published, the intragenomic variation of F. graminearum was not well characterized. Here, we sequenced three Chinese strains and conducted genome-wide comparisons. Our data revealed that all the sequenced strains were distinct from each other and over 350 genes were functionally lost in each of them. Variants of each strain were unevenly distributed in a highly conserved pattern along the chromosomes, resulting in a conserved two-speed genome...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28231525/construction-of-new-est-ssrs-for-fusarium-resistant-wheat-breeding
#9
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
#10
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
#11
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
#12
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/28159864/resistance-to-multiple-soil-borne-pathogens-of-the-pacific-northwest-u-s-a-is-co-located-in-a-wheat-recombinant-inbred-line-population
#13
Alison L Thompson, Aaron K Mahoney, Richard W Smiley, Timothy C Paulitz, Scot Hulbert, Kim Garland-Campbell
Soil-borne pathogens of the Pacific Northwest, U.S.A. decrease yields in both spring and winter wheat. Pathogens of economic importance include Fusarium culmorum, Pratylenchus neglectus, P. thornei, and Rhizoctonia solani AG8. Few options are available to growers to manage these pathogens and reduce yield loss, therefore the focus for breeding programs is on developing resistant wheat cultivars. A recombinant inbred line population, LouAu (MP-7, NSL 511036), was developed to identify quantitative trait loci associated with resistance to P...
February 3, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28159289/untargeted-metabolomics-based-on-ultra-high-performance-liquid-chromatography-high-resolution-mass-spectrometry-merged-with-chemometrics-a-new-predictable-tool-for-an-early-detection-of-mycotoxins
#14
Josep Rubert, Laura Righetti, Milena Stranska-Zachariasova, Zbynek Dzuman, Jana Chrpova, Chiara Dall'Asta, Jana Hajslova
In order to explore the early detection of mycotoxins in wheat three standardized approaches (Fusarium disease severity, PCR assays for Fusarium spp. identification and mycotoxin quantification) and a novel untargeted metabolomics strategy were jointly assessed. In the first phase of this research, standardized approaches were able to quantify mycotoxins and identify Fusarium spp. Then, an UHPLC-QTOF metabolic fingerprinting method was developed to investigate plant-pathogen cross-talk. At the same time, chemometrics analysis demonstrated to be a powerful tool in order to distinguish low and strong infection levels...
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28142217/the-cyclase-associated-protein-fgcap1-has-both-pka-dependent-and-independent-functions-during-don-production-and-plant-infection-in-fusarium-graminearum
#15
Tao Yin, Qiang Zhang, Jianhua Wang, Huiquan Liu, Chenfang Wang, Jin-Rong Xu, Cong Jiang
Fusarium graminearum is a causal agent of wheat scab and a producer of trichothecene mycotoxin deoxynivalenol (DON). The expression of trichothecene biosynthesis (TRI) genes and DON production are mainly regulated by the cAMP-PKA pathway and two pathway-specific transcription factors (TRI6 and TRI10). Interestingly, mutants deleted of TRI6 had reduced expression of several components of cAMP signaling, including the FgCAP1 adenylate binding protein gene that has not been functionally characterized in F. graminearum...
January 31, 2017: Molecular Plant Pathology
https://www.readbyqxmd.com/read/28134269/conversion-from-long-term-cultivated-wheat-field-to-jerusalem-artichoke-plantation-changed-soil-fungal-communities
#16
Xingang Zhou, Jianhui Zhang, Danmei Gao, Huan Gao, Meiyu Guo, Li Li, Mengliang Zhao, Fengzhi Wu
Understanding soil microbial communities in agroecosystems has the potential to contribute to the improvement of agricultural productivity and sustainability. Effects of conversion from long-term wheat plantation to Jerusalem artichoke (JA) plantation on soil fungal communities were determined by amplicon sequencing of total fungal ITS regions. Quantitative PCR and PCR-denaturing gradient gel electrophoresis were also used to analyze total fungal and Trichoderma spp. ITS regions and Fusarium spp. Ef1α genes...
January 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28132080/fvsnf1-the-sucrose-non-fermenting-protein-kinase-gene-of-fusarium-virguliforme-is-required-for-cell-wall-degrading-enzymes-expression-and-sudden-death-syndrome-development-in-soybean
#17
Kazi T Islam, Jason P Bond, Ahmad M Fakhoury
Fusarium virguliforme is a soil-borne pathogenic fungus that causes sudden death syndrome (SDS) in soybean. Its pathogenicity is believed to require the activity of cell-wall-degrading enzymes (CWDEs). The sucrose non-fermenting protein kinase 1 gene (SNF1) is a key component of the glucose de-repression pathway in yeast, and a regulator of gene expression for CWDEs in some plant pathogenic fungi. To elucidate the functional role of the SNF1 homolog in F. virguliforme, FvSNF1 was disrupted using a split-marker strategy...
January 28, 2017: Current Genetics
https://www.readbyqxmd.com/read/28109774/a-tomatinase-like-enzyme-acts-as-a-virulence-factor-in-the-wheat-pathogen-fusarium-graminearum
#18
Jason Carere, Aurélie H Benfield, Mélodie Ollivier, Chunji J Liu, Kemal Kazan, Donald M Gardiner
During their interactions with plants, fungal pathogens employ large numbers of pathogenesis-associated molecules including secreted effectors and enzymes that can degrade various defence compounds. However, in many cases, in planta targets of pathogen-produced enzymes remain unknown. We identified a gene in the wheat pathogen Fusarium graminearum, encoding a putative enzyme that shows 84% sequence identity to FoTom1, a tomatinase produced by the tomato pathogen Fusarium oxysporum f. sp. lycopersici. In F. oxysporum f...
January 18, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28107943/development-of-a-nanoarray-capable-of-the-rapid-and-simultaneous-detection-of-zearalenone-t2-toxin-and-fumonisin
#19
Sara E McNamee, Francesca Bravin, Giulia Rosar, Christopher T Elliott, Katrina Campbell
Fusarium mycotoxins such as trichothecenes, zearalenone and fumonisins occur on a worldwide basis in cereal grains, animal feeds and forages. Practical solutions for multiple mycotoxin determination in samples are required by industry and regulators for cost effective screening purposes. The feasibility of developing a novel multiplex nanoarray for the simultaneous and semi-quantitative detection of three regulated mycotoxins: zearalenone (ZEA), T2-toxin (T2) and fumonisin B1 (FUM) was examined. Additionally, the assay was also able to detect HT2 toxin and fumonisin B2 and B3 due to the cross reactivity profiles of the antibodies used...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28080216/occurrence-of-mycotoxins-in-wheat-grains-exposed-to-fungicides-on-fusarium-head-blight-control-in-southern-brazil
#20
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)...
January 12, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
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