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wheat Fhb

Cameron S Gordon, Nandhakishore Rajagopalan, Eddy P Risseeuw, Marci Surpin, Fraser J Ball, Carla J Barber, Leann M Buhrow, Shawn M Clark, Jonathan E Page, Chris D Todd, Suzanne R Abrams, Michele C Loewen
Abscisic acid (ABA) is a well-characterized plant hormone, known to mediate developmental aspects as well as both abiotic and biotic stress responses. Notably, the exogenous application of ABA has recently been shown to increase susceptibility to the fungal pathogen Fusarium graminearum, the causative agent of Fusarium head blight (FHB) in wheat and other cereals. However roles and mechanisms associated with ABA's modulation of pathogen responses remain enigmatic. Here the identification of putative ABA receptors from available genomic databases for Triticum aestivum (bread wheat) and Brachypodium distachyon (a model cereal) are reported...
2016: PloS One
Alessandra Quarantin, Anika Glasenapp, Wilhelm Schäfer, Francesco Favaron, Luca Sella
The genome of Fusarium graminearum, a necrotrophic fungal pathogen causing Fusarium head blight (FHB) disease of wheat, barley and other cereal grains, contains five genes putatively encoding for proteins with a cerato-platanin domain. Cerato-platanins are small secreted cysteine-rich proteins possibly localized in the fungal cell walls and also contributing to the virulence. Two of these F. graminearum proteins (FgCPP1 and FgCPP2) belong to the class of SnodProt proteins which exhibit phytotoxic activity in the fungal pathogens Botrytis cinerea and Magnaporthe grisea...
October 4, 2016: Plant Physiology and Biochemistry: PPB
Miroslava Cuperlovic-Culf, NandhaKishore Rajagopalan, Dan Tulpan, Michele C Loewen
Fusarium head blight (FHB), primarily caused by Fusarium graminearum, is a devastating disease of wheat. Partial resistance to FHB of several wheat cultivars includes specific metabolic responses to inoculation. Previously published studies have determined major metabolic changes induced by pathogens in resistant and susceptible plants. Functionality of the majority of these metabolites in resistance remains unknown. In this work we have made a compilation of all metabolites determined as selectively accumulated following FHB inoculation in resistant plants...
September 30, 2016: Metabolites
Jin Cai, Shan Wang, Tao Li, Guorong Zhang, Guihua Bai
Fusarium head blight (FHB), caused by Fusarium graminearum Schwabe, is a devastating disease in wheat (Triticum aestivum L.). Use of host resistance is one of the most effective strategies to minimize the disease damage. Haiyanzhong (HYZ) is a Chinese wheat landrace that shows a high level of resistance to FHB spread within a spike (type II resistance). To map the quantitative trait loci (QTLs) in HYZ and identify markers tightly linked to the QTLs for FHB resistance, a population of 172 recombinant inbred lines (RILs) from a cross between HYZ and Wheaton (FHB susceptible) was genotyped using simple sequence repeats (SSRs) and single-nucleotide polymorphisms (SNPs) derived from genotyping-by-sequencing (GBS), and evaluated for percentage of symptomatic spikelets (PSSs) per spike in three greenhouse experiments...
2016: PloS One
Silvio Tundo, Michela Janni, Ilaria Moscetti, Giulia Mandalà, Daniel Savatin, Ann Blechl, Francesco Favaron, Renato D'Ovidio
Fusarium Head Blight (FHB) caused by Fusarium graminearum is one of the most destructive fungal diseases of wheat worldwide. The pathogen infects the spike at flowering time and causes severe yield losses, deterioration of grain quality, and accumulation of mycotoxins. The understanding of the precise means of pathogen entry and colonization of floral tissue is crucial to providing effective protection against FHB. Polygalacturonase inhibiting proteins (PGIPs) are cell wall proteins that inhibit the activity of polygalacturonases (PGs), a class of pectin-depolymerizing enzymes secreted by microbial pathogens, including Fusaria...
September 27, 2016: Molecular Plant-microbe Interactions: MPMI
A Kheiri, S A Moosawi Jorf, A Malihipour, H Saremi, M Nikkhah
Fusarium head blight (FHB) disease caused by Fusarium graminearum is one of the most important diseases of wheat in humid and warm areas. This disease significantly reduces yield as well as seed quality. The aim of this work was to evaluate the possibility of control of FHB by chitosan (CS) and chitosan nanoparticles (CS/NPs). In vitro, the application of various concentrations of CS and CS/NPs showed significant inhibition of both radial mycelial growth and number of colonies formed against F. graminearum...
September 21, 2016: International Journal of Biological Macromolecules
Juan M Palazzini, Christopher A Dunlap, Michael J Bowman, Sofía N Chulze
Bacillus subtilis RC 218 was originally isolated from wheat anthers as a potential antagonist of Fusarium graminearum, the causal agent of Fusarium head blight (FHB). It was demonstrated to have antagonist activity against the plant pathogen under in vitro and greenhouse assays. The current study extends characterizing B. subtilis RC 218 with a field study and genome sequencing. The field study demonstrated that B. subtilis RC 218 could reduce disease severity and the associated mycotoxin (deoxynivalenol) accumulation, under field conditions...
November 2016: Microbiological Research
Udaykumar Kage, Shailesh Karre, Ajjamada C Kushalappa, Curt McCartney
Fusarium head blight (FHB) resistance in wheat is considered to be polygenic in nature. Cell wall fortification is one of the best resistance mechanisms in wheat against Fusarium graminearum which causes FHB. Metabolomics approach in our study led to the identification of a wide array of resistance related (RR) metabolites, among which hydroxycinnamic acid amides (HCAAs), such as, coumaroylagmatine and coumaroylputrescine were the highest fold-change RR metabolites in the rachis of a resistant near-isogenic line (NIL-R) upon F...
September 24, 2016: Plant Biotechnology Journal
Noemie Prat, Camille Guilbert, Ursa Prah, Elisabeth Wachter, Barbara Steiner, Thierry Langin, Olivier Robert, Hermann Buerstmayr
The QTL Fhb1 was successfully introgressed and validated in three durum wheat populations. The novel germplasm and the QTL detected will support improvement of Fusarium resistance in durum wheat. Durum wheat (Triticum durum Desf.) is particularly susceptible to Fusarium head blight (FHB) and breeding for resistance is hampered by limited genetic variation within this species. To date, resistant sources are mainly available in a few wild relative tetraploid wheat accessions. In this study, the effect of the well-known hexaploid wheat (Triticum aestivum L...
September 23, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Xinyao He, Pawan K Singh, Susanne Dreisigacker, Sukhwinder Singh, Morten Lillemo, Etienne Duveiller
It has been well documented that dwarfing genes Rht-B1b and Rht-D1b are associated with Type I susceptibility to Fusarium head blight (FHB) in wheat; but the underlying mechanism has not been well delineated. Anther extrusion (AE) has also been related to Type I resistance for initial FHB infection, where high AE renders FHB resistance. In this study, two doubled haploid populations were used to investigate the impact of the two dwarfing genes on FHB resistance and AE, and to elucidate the role of AE in Rht-mediated FHB susceptibility...
2016: PloS One
Jassy Drakulic, Olubukola Ajigboye, Ranjan Swarup, Toby Bruce, Rumiana V Ray
: Fusarium langsethiae is a fungal pathogen of cereal crops that is an increasing problem in Northern Europe, but much of its epidemiology is poorly understood. The species produces the mycotoxins T-2 and HT-2 which are highly toxic. It was hypothesised that grain aphids, Sitobion avenae, might transmit F. langsethiae inoculum between wheat plants, and a series of transmission experiments and volatile chemical analyses were performed to test this. Manual translocation of aphids from inoculated to uninfected hosts resulted in pathogen DNA accumulation in hosts...
September 2, 2016: Applied and Environmental Microbiology
X Li, Z P Xiang, W Q Chen, Q L Huang, T G Liu, Q Li, S F Zhong, M Zhang, J W Guo, L Lei, P G Luo
Fusarium head blight (FHB), mainly caused by Fusarium graminearum, is a destructive disease in wheat. A population consisting of 229 F2 and F2:3 plants derived from the cross PI 672538 × L661 was used to evaluate the reactions to FHB. The FHB resistance data distribution in the F2 population indicates that some quantitative trait loci (QTLs) were controlling the FHB resistance in PI 672538. We further detected two major QTLs (Qfhs-2B, Qfhs-3B) from analysis of the resistance data and the PCR-amplified results using WinQTLCart 2...
October 18, 2016: Phytopathology
Kun Luo, Hélène Rocheleau, Peng-Fei Qi, You-Liang Zheng, Hui-Yan Zhao, Thérèse Ouellet
Fusarium graminearum is a devastating pathogenic fungus causing fusarium head blight (FHB) of wheat. This fungus can produce indole-3-acetic acid (IAA) and a very large amount of IAA accumulates in wheat head tissues during the first few days of infection by F. graminearum. Using liquid culture conditions, we have determined that F. graminearum can use tryptamine (TAM) and indole-3-acetonitrile (IAN) as biosynthetic intermediates to produce IAA. It is the first time that F. graminearum is shown to use the l-tryptophan-dependent TAM and IAN pathways rather than the indole-3-acetamide or indole-3-pyruvic acid pathways to produce IAA...
September 2016: Fungal Biology
Wanxin Chen, Christine Kastner, Daniela Nowara, Ely Oliveira-Garcia, Twan Rutten, Yusheng Zhao, Holger B Deising, Jochen Kumlehn, Patrick Schweizer
Plants producing antisense or double-stranded RNA molecules that target specific genes of eukaryotic pests or pathogens can become protected from their attack. This beneficial effect was also reported for plant-fungus interactions and is believed to reflect uptake of the RNAs by the fungus via an as yet unknown mechanism, followed by target gene silencing. Here we report that wheat plants pre-infected with Barley stripe mosaic virus (BSMV) strains containing antisense sequences against target genes of the Fusarium head blight (FHB) fungus F...
September 2016: Journal of Experimental Botany
Valeria Scala, Gabriella Aureli, Gaspare Cesarano, Guido Incerti, Corrado Fanelli, Felice Scala, Massimo Reverberi, Giuliano Bonanomi
Fusarium head blight (FHB) is a multifaceted disease caused by some species of Fusarium spp. A huge production of mycotoxins, mostly trichothecenes, often accompanied this disease. Amongst these toxic compounds, deoxynivalenol (DON) and its derivatives represent a major issue for human as well as for animal health and farming. Common and durum wheat are amongst the hosts of trichothecene-producing Fusaria. Differences in susceptibility to fungal infection and toxin accumulation occur in wheat cultivars. Recently, increasing incidence and severity of Fusarium infection and a higher DON accumulation in durum wheat were observed in Italy, especially in Northern regions...
2016: Frontiers in Microbiology
Rachid Lahlali, Saroj Kumar, Lipu Wang, Li Forseille, Nicole Sylvain, Malgorzata Korbas, David Muir, George Swerhone, John R Lawrence, Pierre R Fobert, Gary Peng, Chithra Karunakaran
Fusarium head blight (FHB) is a serious disease of wheat worldwide. Cultivar resistance to FHB depends on biochemical factors that confine the pathogen spread in spikes. Breeding for cultivar resistance is considered the most practical way to manage this disease. In this study, different spectroscopy and microscopy techniques were applied to discriminate resistance in wheat genotypes against FHB. Synchrotron-based spectroscopy and imaging techniques, including focal plane array infrared and X-ray fluorescence (XRF) spectroscopy were used to understand changes in biochemical and nutrients in rachis following FHB infection...
2016: Frontiers in Microbiology
Amber Hoffstetter, Antonio Cabrera, Mao Huang, Clay Sneller
Genomic selection (GS) is a breeding tool that estimates breeding values (GEBVs) of individuals based solely on marker data by using a model built using phenotypic and marker data from a training population (TP). The effectiveness of GS increases as the correlation of GEBVs and phenotypes (accuracy) increases. Using phenotypic and genotypic data from a TP of 470 soft winter wheat lines, we assessed the accuracy of GS for grain yield, Fusarium Head Blight (FHB) resistance, softness equivalence (SE), and flour yield (FY)...
2016: G3: Genes—Genomes—Genetics
Tao Li, Meng Luo, Dadong Zhang, Di Wu, Lei Li, Guihua Bai
Molecular markers associated with known quantitative trait loci (QTLs) for type 2 resistance to Fusarium head blight (FHB) in bi-parental mapping population usually have more than two alleles in breeding populations. Therefore, understanding the association of each allele with FHB response is particularly important to marker-assisted enhancement of FHB resistance. In this paper, we evaluated FHB severities of 192 wheat accessions including landraces and commercial varieties in three field growing seasons, and genotyped this panel with 364 genome-wide informative molecular markers...
June 2016: Breeding Science
Alessandra Zega, Renato D'Ovidio
Pectin methyl esterase (PME) genes code for enzymes that are involved in structural modifications of the plant cell wall during plant growth and development. They are also involved in plant-pathogen interaction. PME genes belong to a multigene family and in this study we report the first comprehensive analysis of the PME gene family in bread wheat (Triticum aestivum L.). Like in other species, the members of the TaPME family are dispersed throughout the genome and their encoded products retain the typical structural features of PMEs...
June 29, 2016: Plant Physiology and Biochemistry: PPB
Xinyao He, Morten Lillemo, Jianrong Shi, Jirong Wu, Åsmund Bjørnstad, Tatiana Belova, Susanne Dreisigacker, Etienne Duveiller, Pawan Singh
Fusarium head blight (FHB) resistant line Soru#1 was hybridized with the German cultivar Naxos to generate 131 recombinant inbred lines for QTL mapping. The population was phenotyped for FHB and associated traits in spray inoculated experiments in El Batán (Mexico), spawn inoculated experiments in Ås (Norway) and point inoculated experiments in Nanjing (China), with two field trials at each location. Genotyping was performed with the Illumina iSelect 90K SNP wheat chip, along with a few SSR and STS markers...
2016: PloS One
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