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Search on : Helminthosporium [Words]
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[PMID]: 29251589
[Au] Autor:Ghabrial SA; Castón JR; Coutts RHA; Hillman BI; Jiang D; Kim DH; Moriyama H; Ictv Report Consortium
[Ad] Address:1​Department of Plant Pathology, University of Kentucky, Lexington, KY 40546, USA.
[Ti] Title:ICTV Virus Taxonomy Profile: Chrysoviridae.
[So] Source:J Gen Virol;99(1):19-20, 2018 Jan.
[Is] ISSN:1465-2099
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:The Chrysoviridae is a family of small, isometric, non-enveloped viruses (40 nm in diameter) with segmented dsRNA genomes (typically four segments). The genome segments are individually encapsidated and together comprise 11.5-12.8 kbp. The single genus Chrysovirus includes nine species. Chrysoviruses lack an extracellular phase to their life cycle; they are transmitted via intracellular routes within an individual during hyphal growth, in asexual or sexual spores, or between individuals via hyphal anastomosis. There are no known natural vectors for chrysoviruses. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the taxonomy of the Chrysoviridae, which is available at www.ictv.global/report/chrysoviridae.
[Mh] MeSH terms primary: Genome, Viral
Phylogeny
RNA Viruses/genetics
RNA, Double-Stranded/genetics
RNA, Viral/genetics
Virion/genetics
[Mh] MeSH terms secundary: Ascomycota/virology
Basidiomycota/virology
Hyphae/virology
RNA Viruses/classification
RNA Viruses/ultrastructure
Spores, Fungal/virology
Terminology as Topic
Virion/ultrastructure
Virus Replication
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (RNA, Double-Stranded); 0 (RNA, Viral)
[Em] Entry month:1712
[Cu] Class update date: 171229
[Lr] Last revision date:171229
[Js] Journal subset:IM
[Da] Date of entry for processing:171219
[St] Status:MEDLINE
[do] DOI:10.1099/jgv.0.000994

  2 / 407 MEDLINE  
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[PMID]: 29045052
[Au] Autor:Figueroa M; Hammond-Kosack KE; Solomon PS
[Ad] Address:Department of Plant Pathology, Stakman-Borlaug Center for Sustainable Plant Health, University of Minnesota, St. Paul, MN, United States.
[Ti] Title:A review of wheat diseases - a field perspective.
[So] Source:Mol Plant Pathol;, 2017 Oct 18.
[Is] ISSN:1364-3703
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Wheat is one of the primary staple foods throughout the planet. Significant yield gains in wheat production over the past 40 years have resulted in a steady balance of supply versus demand. However, predicted global population growth rates and dietary changes necessitate substantial yield gains over the next several decades to meet this escalating demand. A key component to meeting this challenge is better management of fungal incited diseases, which can be responsible for 15-20% yield losses per annum. Prominent diseases of wheat that currently contribute to these losses include the rusts, the blotches and head blight/scab. Other recently emerged or relatively unnoticed diseases like wheat blast and spot blotch, respectively, also threaten grain production. This review seeks to provide an overview of the impact, distribution and management strategies of these diseases. Also, the biology of the pathogens and the molecular basis of their interaction with wheat are discussed. This article is protected by copyright. All rights reserved.
[Pt] Publication type:JOURNAL ARTICLE; REVIEW
[Em] Entry month:1710
[Cu] Class update date: 171018
[Lr] Last revision date:171018
[St] Status:Publisher
[do] DOI:10.1111/mpp.12618

  3 / 407 MEDLINE  
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[PMID]: 29017401
[Au] Autor:Miyazaki S; Jiang K; Kobayashi M; Asami T; Nakajima M
[Ad] Address:a Department of Applied Biological Chemistry , The University of Tokyo , Tokyo , Japan.
[Ti] Title:Helminthosporic acid functions as an agonist for gibberellin receptor.
[So] Source:Biosci Biotechnol Biochem;81(11):2152-2159, 2017 Nov.
[Is] ISSN:1347-6947
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Helminthosporol was isolated from a fungus, Helminthosporium sativum, as a natural plant growth regulator in 1963. It showed gibberellin-like bioactivity that stimulated the growth of the second leaf sheath of rice. After studying the structure-activity relationship between the compound and some synthesized analogs, it was found that helminthosporic acid (H-acid) has higher gibberellin-like activity and chemical stability than helminthosporol. In this study, we showed that (1) H-acid displays gibberellin-like activities not only in rice but also in Arabidopsis, (2) it regulates the expression of gibberellin-related genes, (3) it induces DELLA degradation through binding with a gibberellin receptor (GID1), and (4) it forms the GID1-(H-acid)-DELLA complex to transduce the gibberellin signal in the same manner as gibberellin. This work shows that the H-acid mode of action acts as an agonist for gibberellin receptor.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1710
[Cu] Class update date: 171117
[Lr] Last revision date:171117
[St] Status:In-Process
[do] DOI:10.1080/09168451.2017.1381018

  4 / 407 MEDLINE  
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[PMID]: 28663602
[Au] Autor:Marin-Felix Y; Groenewald JZ; Cai L; Chen Q; Marincowitz S; Barnes I; Bensch K; Braun U; Camporesi E; Damm U; de Beer ZW; Dissanayake A; Edwards J; Giraldo A; Hernández-Restrepo M; Hyde KD; Jayawardena RS; Lombard L; Luangsa-Ard J; McTaggart AR; Rossman AY; Sandoval-Denis M; Shen M; Shivas RG; Tan YP; van der Linde EJ; Wingfield MJ; Wood AR; Zhang JQ; Zhang Y; Crous PW
[Ad] Address:Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands.
[Ti] Title:Genera of phytopathogenic fungi: GOPHY 1.
[So] Source:Stud Mycol;86:99-216, 2017 Mar.
[Is] ISSN:0166-0616
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:Genera of Phytopathogenic Fungi (GOPHY) is introduced as a new series of publications in order to provide a stable platform for the taxonomy of phytopathogenic fungi. This first paper focuses on 21 genera of phytopathogenic fungi: , , , , , , , , , , , , , , , , , , , and . For each genus, a morphological description and information about its pathology, distribution, hosts and disease symptoms are provided. In addition, this information is linked to primary and secondary DNA barcodes of the presently accepted species, and relevant literature. Moreover, several novelties are introduced, i.e. new genera, species and combinations, and neo-, lecto- and epitypes designated to provide a stable taxonomy. This first paper includes one new genus, 26 new species, ten new combinations, and four typifications of older names.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1707
[Cu] Class update date: 170816
[Lr] Last revision date:170816
[St] Status:PubMed-not-MEDLINE
[do] DOI:10.1016/j.simyco.2017.04.002

  5 / 407 MEDLINE  
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[PMID]: 28649153
[Au] Autor:Voglmayr H; Jaklitsch WM
[Ad] Address:Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Wien, Austria.
[Ti] Title:, and revisited - New species and generic reclassification.
[So] Source:Stud Mycol;87:43-76, 2017 Jun.
[Is] ISSN:0166-0616
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:Molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, and sequences were performed to investigate the phylogenetic relationships of , and species. Based on phylogenetic analyses and morphology, the genus is synonymised with , and the genus is revealed as polyphyletic. is confirmed to be closely related to the generic type and its morphology is described and illustrated. , , , and are recognised in , and and are combined in . Based on pure culture studies and DNA sequence data, and are shown to be the sexual morphs of and , respectively. European accessions of are recognised to differ from the North American type and are described as . The sexual morph of is recorded and described for the first time. The generic type of , , is epitypified with a recent collection from the type host, . Based on sequence data, is recognised as a distinct species. Several species for which subperidermal stromata have been reported are shown to be fungicolous on , the "stromata" representing aborted and transformed host stromata or conidiomata: , , and on spp.; on conidiomata of ; on conidiomata of sp.; and on . The newly described is fungicolous on cf. ( ).
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1706
[Cu] Class update date: 171013
[Lr] Last revision date:171013
[St] Status:PubMed-not-MEDLINE
[do] DOI:10.1016/j.simyco.2017.05.001

  6 / 407 MEDLINE  
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[PMID]: 28585451
[Au] Autor:Lysøe E; Dees MW; Brurberg MB
[Ad] Address:1 Norwegian Institute of Bioeconomy Research, Division of Biotechnology and Plant Health, Høgskoleveien 7, 1430 Ås, Norway; and.
[Ti] Title:A Three-Way Transcriptomic Interaction Study of a Biocontrol Agent (Clonostachys rosea), a Fungal Pathogen (Helminthosporium solani), and a Potato Host (Solanum tuberosum).
[So] Source:Mol Plant Microbe Interact;30(8):646-655, 2017 Aug.
[Is] ISSN:0894-0282
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Helminthosporium solani causes silver scurf, which affects the quality of potato. The biocontrol agent Clonostachys rosea greatly limited the severity of silver scurf symptoms and amount of H. solani genomic DNA in laboratory experiments. Transcriptomic analysis during interaction showed that H. solani gene expression was highly reduced when coinoculated with the biocontrol agent C. rosea, whereas gene expression of C. rosea was clearly boosted as a response to the pathogen. The most notable upregulated C. rosea genes were those encoding proteins involved in cellular response to oxidative stress, proteases, G-protein signaling, and the methyltransferase LaeA. The most notable potato response to both fungi was downregulation of defense-related genes and mitogen-activated protein kinase kinase kinases. At a later stage, this shifted, and most potato defense genes were turned on, especially those involved in terpenoid biosynthesis when H. solani was present. Some biocontrol-activated defense-related genes in potato were upregulated during early interaction with C. rosea alone that were not triggered by H. solani alone. Our results indicate that the reductions of silver scurf using C. rosea are probably due to a combination of mechanisms, including mycoparasitism, biocontrol-activated stimulation of plant defense mechanisms, microbial competition for nutrients, space, and antibiosis.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1706
[Cu] Class update date: 170706
[Lr] Last revision date:170706
[St] Status:In-Data-Review
[do] DOI:10.1094/MPMI-03-17-0062-R

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[PMID]: 28349997
[Au] Autor:El-Moslamy SH; Elkady MF; Rezk AH; Abdel-Fattah YR
[Ad] Address:Bioprocess development Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technology Applications, New Borg El-Arab City, Alexandria, Egypt.
[Ti] Title:Applying Taguchi design and large-scale strategy for mycosynthesis of nano-silver from endophytic Trichoderma harzianum SYA.F4 and its application against phytopathogens.
[So] Source:Sci Rep;7:45297, 2017 Mar 28.
[Is] ISSN:2045-2322
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Development of reliable and low-cost requirement for large-scale eco-friendly biogenic synthesis of metallic nanoparticles is an important step for industrial applications of bionanotechnology. In the present study, the mycosynthesis of spherical nano-Ag (12.7 ± 0.8 nm) from extracellular filtrate of local endophytic T. harzianum SYA.F4 strain which have interested mixed bioactive metabolites (alkaloids, flavonoids, tannins, phenols, nitrate reductase (320 nmol/hr/ml), carbohydrate (25 µg/µl) and total protein concentration (2.5 g/l) was reported. Industrial mycosynthesis of nano-Ag can be induced with different characters depending on the fungal cultivation and physical conditions. Taguchi design was applied to improve the physicochemical conditions for nano-Ag production, and the optimum conditions which increased its mass weight 3 times larger than a basal condition were as follows: AgNO (0.01 M), diluted reductant (10 v/v, pH 5) and incubated at 30 °C, 200 rpm for 24 hr. Kinetic conversion rates in submerged batch cultivation in 7 L stirred tank bioreactor on using semi-defined cultivation medium was as follows: the maximum biomass production (X ) and maximum nano-Ag mass weight (P ) calculated (60.5 g/l and 78.4 g/l respectively). The best nano-Ag concentration that formed large inhibition zones was 100 µg/ml which showed against A.alternate (43 mm) followed by Helminthosporium sp. (35 mm), Botrytis sp. (32 mm) and P. arenaria (28 mm).
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1703
[Cu] Class update date: 170403
[Lr] Last revision date:170403
[St] Status:In-Data-Review
[do] DOI:10.1038/srep45297

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[PMID]: 28093843
[Au] Autor:McDonald MC; Ahren D; Simpfendorfer S; Milgate A; Solomon PS
[Ad] Address:Plant Sciences Division, Research School of Biology, The Australian National University, Canberra, 2601, Australia.
[Ti] Title:The discovery of the virulence gene ToxA in the wheat and barley pathogen Bipolaris sorokiniana.
[So] Source:Mol Plant Pathol;, 2017 Jan 17.
[Is] ISSN:1364-3703
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Bipolaris sorokiniana is the causal agent of multiple diseases on wheat and barley and is the primary constraint to cereal production throughout South Asia. Despite its significance, the molecular basis of disease is poorly understood. To address this, the genomes of three Australian isolates of B. sorokiniana were sequenced and screened for known pathogenicity genes. Sequence analysis revealed that the isolate BRIP10943 harboured the ToxA gene, which has been associated previously with disease in the wheat pathogens Parastagonospora nodorum and Pyrenophora tritici-repentis. Analysis of the regions flanking ToxA within B. sorokiniana revealed that it was embedded within a 12-kb genomic element nearly identical to the corresponding regions in P. nodorum and P. tritici-repentis. A screen of 35 Australian B. sorokiniana isolates confirmed that ToxA was present in 12 isolates. Sequencing of the ToxA genes within these isolates revealed two haplotypes, which differed by a single non-synonymous nucleotide substitution. Pathogenicity assays showed that a B. sorokiniana isolate harbouring ToxA was more virulent on wheat lines that contained the sensitivity gene when compared with a non-ToxA isolate. This work demonstrates that proteins that confer host-specific virulence can be horizontally acquired across multiple species. This acquisition can dramatically increase the virulence of pathogenic strains on susceptible cultivars, which, in an agricultural setting, can have devastating economic and social impacts.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1701
[Cu] Class update date: 170315
[Lr] Last revision date:170315
[St] Status:Publisher
[do] DOI:10.1111/mpp.12535

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[PMID]: 27860139
[Au] Autor:Lv XH; Ren ZL; Liu P; Li BX; Li QS; Chu MJ; Cao HQ
[Ad] Address:School of Plant Protection, Anhui Agricultural University, Hefei, P.R. China.
[Ti] Title:Design, synthesis and biological evaluation of novel nicotinamide derivatives bearing a substituted pyrazole moiety as potential SDH inhibitors.
[So] Source:Pest Manag Sci;73(8):1585-1592, 2017 Aug.
[Is] ISSN:1526-4998
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:BACKGROUND: Succinate dehydrogenase (SDH) plays an important role in the Krebs cycle, which is considered as an attractive target for development of succinate dehydrogenase inhibitors (SDHIs) based on antifungal agents. Thus, in order to discover novel molecules with high antifungal activities, SDH as the target for a series of novel nicotinamide derivatives bearing substituted pyrazole moieties were designed and synthesised via a one-pot reaction. RESULTS: The biological assay data showed that compound 3 l displayed the most potent antifungal activity with EC values of 33.5 and 21.4 µm against Helminthosporium maydis and Rhizoctonia cerealis, respectively. Moreover, 3 l exhibited the best inhibitory ability against SDH enzymes. The results of docking simulation showed that 3 l was deeply embedded into the SDH binding pocket, and the binding model was stabilised by a cation-π interaction with Arg 43, Tyr 58 and an H-bond with Trp 173. CONCLUSION: The study suggests that the pyrazole nicotinamide derivative 3 l may serve as a potential SDHI that can be used as a novel antifungal agent, and provides valuable clues for the further design and optimisation of SDH inhibitors. © 2016 Society of Chemical Industry.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1611
[Cu] Class update date: 170703
[Lr] Last revision date:170703
[St] Status:In-Process
[do] DOI:10.1002/ps.4488

  10 / 407 MEDLINE  
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[PMID]: 27819539
[Au] Autor:Tardi-Ovadia R; Linker R; Tsror Lahkim L
[Ad] Address:First and second authors: Faculty of Civil and Environmental Engineering, Technion-Israel Institute of Technology. Haifa 32000, Israel; and third author: Department of Plant Pathology & Weed Research, Institute of Plant Protection, Agricultural Research Organization, Gilat Research Center, M.P. Negev 85280, Israel.
[Ti] Title:Direct Estimation of Local pH Change at Infection Sites of Fungi in Potato Tubers.
[So] Source:Phytopathology;107(1):132-137, 2017 Jan.
[Is] ISSN:0031-949X
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Fungi can modify the pH in or around the infected site via alkalization or acidification, and pH monitoring may provide valuable information on host-fungus interactions. The objective of the present study was to examine the ability of two fungi, Colletotrichum coccodes and Helminthosporium solani, to modify the pH of potato tubers during artificial inoculation in situ. Both fungi cause blemishes on potato tubers, which downgrades tuber quality and yield. Direct visualization and estimation of pH changes near the inoculation area were achieved using pH indicators and image analysis. The results showed that the pH of the area infected by either fungus increased from potato native pH of approximately 6.0 to 7.4 to 8.0. By performing simple analysis of the images, it was also possible to derive the growth curve of each fungus and estimate the lag phase of the radial growth: 10 days for C. coccodes and 17 days H. solani. In addition, a distinctive halo (an edge area with increased pH) was observed only during the lag phase of H. solani infection. pH modulation is a major factor in pathogen-host interaction and the proposed method offers a simple and rapid way to monitor these changes.
[Mh] MeSH terms primary: Colletotrichum/physiology
Helminthosporium/physiology
Host-Pathogen Interactions
Plant Diseases/microbiology
Solanum tuberosum/microbiology
[Mh] MeSH terms secundary: Hydrogen-Ion Concentration
Plant Tubers/chemistry
Plant Tubers/cytology
Plant Tubers/microbiology
Solanum tuberosum/chemistry
Solanum tuberosum/cytology
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1706
[Cu] Class update date: 170629
[Lr] Last revision date:170629
[Js] Journal subset:IM
[Da] Date of entry for processing:161108
[St] Status:MEDLINE


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