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Colletotrichum

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https://www.readbyqxmd.com/read/28535608/antifungal-activities-of-dimeric-sesquiterpenes-shizukaols-c-and-f-isolated-from-chloranthus-japonicus-sieb
#1
Tae Hoon Kang, Yun Mi Lee, Won Jung Lee, Eui Il Hwang, Ki Duk Park, Gyang Ja Choi, Jae Sun Moon, Ho-Yong Park, Sung Uk Kim
Two dimeric sesquitepenes were separated from Chloranthus japonicus Sieb. and identified as shizukaols C and F. They exhibited potent antifungal activities (MICs = 4-16 μg/ml) in vitro against various plant pathogenic fungi Pythium ultimum, Phytophthora infestans, Botrytis cinerea, Colletotrichum lagenarium, Alternaria kikuchana, and Magnaporthe grisea. Shizukaol C showed 88% and 91% protective activities in the greenhouse against Puccinia recondite (wheat leaf rust) and Phytophthora infestans (tomato late blight), respectively, at 100 µg/ml; shizukaol F exhibited 93% antifungal activity against Puccinia recondite at the same concentration...
May 24, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28501467/keratitis-by-a-rare-pathogen-colletotrichum-gloeosporioides-a-case-report
#2
S T Pote, A Chakraborty, K K Lahiri, M S Patole, R A Deshmukh, S R Shah
Colletotrichum species have been reported infrequently as the cause of keratitis or subcutaneous lesions. The patient we describe developed keratitis after ocular trauma. The sample from the corneal scrapings grew Colletotrichum gloeosporioides as identified from morphological characters and DNA sequence of the 'Internal Transcribed Spacer' (ITS) region. The patient underwent topical application of amphotericin-B followed by itraconazole and natamycin treatment. Simultaneous oral voriconazole regimen leads to complete regression of corneal ulcer...
May 10, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28489061/microbial-natural-product-alternariol-5-o-methyl-ether-inhibits-hiv-1-integration-by-blocking-nuclear-import-of-the-pre-integration-complex
#3
Jiwei Ding, Jianyuan Zhao, Zhijun Yang, Ling Ma, Zeyun Mi, Yanbing Wu, Jiamei Guo, Jinmin Zhou, Xiaoyu Li, Ying Guo, Zonggen Peng, Tao Wei, Haisheng Yu, Liguo Zhang, Mei Ge, Shan Cen
While Highly Active Antiretroviral Therapy (HAART) has significantly decreased the mortality of human immunodeficiency virus (HIV)-infected patients, emerging drug resistance to approved HIV-1 integrase inhibitors highlights the need to develop new antivirals with novel mechanisms of action. In this study, we screened a library of microbial natural compounds from endophytic fungus Colletotrichum sp. and identified alternariol 5-O-methyl ether (AME) as a compound that inhibits HIV-1 pre-integration steps. Time-of addition analysis, quantitative real-time PCR, confocal microscopy, and WT viral replication assay were used to elucidate the mechanism...
May 10, 2017: Viruses
https://www.readbyqxmd.com/read/28473373/draft-genome-sequences-of-two-isolates-of-colletotrichum-lindemuthianum-the-causal-agent-of-anthracnose-in-common-beans
#4
Casley Borges de Queiroz, Hilberty L Nunes Correia, Renato Pedrozo Menicucci, Pedro M Pereira Vidigal, Marisa Vieira de Queiroz
Colletotrichum lindemuthianum is the causal agent of anthracnose in common beans, one of the main limiting factors of their culture. Here, we report for the first time, to our knowledge, a draft of the complete genome sequences of two isolates belonging to 83.501 and 89 A2 2-3 of C. lindemutuianum.
May 4, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28469610/co-culturing-of-fungal-strains-against-botrytis-cinerea-as-a-model-for-the-induction-of-chemical-diversity-and-therapeutic-agents
#5
Rachel Serrano, Víctor González-Menéndez, Lorena Rodríguez, Jesús Martín, José R Tormo, Olga Genilloud
New fungal SMs (SMs) have been successfully described to be produced by means of in vitro-simulated microbial community interactions. Co-culturing of fungi has proved to be an efficient way to induce cell-cell interactions that can promote the activation of cryptic pathways, frequently silent when the strains are grown in laboratory conditions. Filamentous fungi represent one of the most diverse microbial groups known to produce bioactive natural products. Triggering the production of novel antifungal compounds in fungi could respond to the current needs to fight health compromising pathogens and provide new therapeutic solutions...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28458692/control-of-passion-fruit-fungal-diseases-using-essential-oils-extracted-from-rosemary-rosmarinus-officinalis-and-eucalyptus-eucalyptus-agglomerata-in-egerton-university-main-campus-njoro-kenya
#6
Paul Njenga Waithaka, Eliud Mugu Gathuru, Benson Muriuki Githaiga, Salome Nduta Kimani
Growth of fruits which form an important part of human diet has been jeopardized by the many fungal diseases that are present today. This study was conceived to isolate the most common fungal pathogens in passion fruits. Fungi were isolated using potato dextrose agar in addition to characterization using morphological, cultural, and biochemical means. Extraction of essential oils from rosemary (Rosmarinus officinalis) and eucalyptus (Eucalyptus agglomerata) was done. Before carrying the sensitivity test of essential oils to the fungal isolates, constituents of the essential oils were determined...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28445700/design-synthesis-of-novel-chitosan-derivatives-bearing-quaternary-phosphonium-salts-and-evaluation-of-antifungal-activity
#7
Wenqiang Tan, Jingjing Zhang, Fang Luan, Lijie Wei, Yuan Chen, Fang Dong, Qing Li, Zhanyong Guo
Two novel chitosan derivatives modified with quaternary phosphonium salts were successfully synthesized, including tricyclohexylphosphonium acetyl chitosan chloride (TCPACSC) and triphenylphosphonium acetyl chitosan chloride (TPPACSC), and characterized by FTIR, (1)H NMR, and (13)C NMR spectra. The degree of substitution was also calculated by elemental analysis results. Their antifungal activities against Colletotrichum lagenarium, Watermelon fusarium, and Fusarium oxysporum were investigated in vitro using the radial growth assay, minimal inhibitory concentration, and minimum bactericidal concentration assay...
April 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28420340/genetics-and-mapping-of-a-new-anthracnose-resistance-locus-in-andean-common-bean-paloma
#8
Sandra Aparecida de Lima Castro, Maria Celeste Gonçalves-Vidigal, Thiago Alexandre Santana Gilio, Giselly Figueiredo Lacanallo, Giseli Valentini, Vanusa da Silva Ramos Martins, Qijian Song, Marta Zulema Galván, Oscar P Hurtado-Gonzales, Marcial Antonio Pastor-Corrales
BACKGROUND: The Andean cultivar Paloma is resistant to Mesoamerican and Andean races of Colletotrichum lindemuthianum, the fungal pathogen that causes the destructive anthracnose disease in common bean. Remarkably, Paloma is resistant to Mesoamerican races 2047 and 3481, which are among the most virulent races of the anthracnose pathogen. Most genes conferring anthracnose resistance in common bean are overcome by these races. The genetic mapping and the relationship between the resistant Co-Pa gene of Paloma and previously characterized anthracnose resistance genes can be a great contribution for breeding programs...
April 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28398103/endophytic-fungi-associated-with-monarda-citriodora-an-aromatic-and-medicinal-plant-and-their-biocontrol-potential
#9
Meenu Katoch, Shipra Pull
CONTEXT: The Food and Agriculture Organization has estimated that every year considerable losses of the food crops occur due to plant diseases. Although fungicides are extensively used for management of plant diseases, they are expensive and hazardous to the environment and human health. Alternatively, biological control is the safe way to overcome the effects of plant diseases and to sustain agriculture. Since Monarda citriodora Cerv. ex Lag. (Lamiaceae/Labiatae) is known for its antifungal properties, it was chosen for the study...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28395521/a-new-p-hydroxybenzoic-acid-derivative-from-an-endophytic-fungus-penicillium-sp-of-nerium-indicum
#10
Yang-Min Ma, Ke Qiao, Yang Kong, Lin-Xin Guo, Meng-Yun Li, Chao Fan
A new p-hydroxybenzoic acid derivative named 4-(2'R, 4'-dihydroxybutoxy) benzoic acid (1) was isolated from the fermentation of Penicillium sp. R22 in Nerium indicum. The structure was elucidated by means of spectroscopic (HR-ESI-MS, NMR, IR, UV) and X-ray crystallographic methods. The antibacterial and antifungal activity of compound 1 was tested, and the results showed that compound 1 revealed potent antifungal activity against Colletotrichum gloeosporioides, Alternaria alternata, and Alteranria brassicae with MIC value of 31...
April 11, 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/28381958/fungicide-sensitivity-among-isolates-of-colletotrichum-truncatum-and-fusarium-incarnatum-equiseti-species-complex-infecting-bell-pepper-in-trinidad
#11
Hema Ramdial, Kathryn De Abreu, Sephra N Rampersad
Bell pepper is an economically important crop worldwide; however, production is restricted by a number of fungal diseases that cause significant yield loss. Chemical control is the most common approach adopted by growers to manage a number of these diseases. Monitoring for the development to resistance to fungicides in pathogenic fungal populations is central to devising integrated pest management strategies. Two fungal species, Fusarium incarnatum-equiseti species complex (FIESC) and Colletotrichum truncatum are important pathogens of bell pepper in Trinidad...
April 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28378161/unveiling-members-of-colletotrichum-acutatum-species-complex-causing-colletotrichum-leaf-disease-of-hevea-brasiliensis-in-sri-lanka
#12
D M Hunupolagama, N V Chandrasekharan, W S S Wijesundera, H S Kathriarachchi, T H P S Fernando, R L C Wijesundera
Colletotrichum is an important fungal genus with great diversity, which causes anthracnose of a variety of crop plants including rubber trees. Colletotrichum acutatum and Colletotrichum gloeosporioides have been identified as the major causative agents of Colletotrichum leaf disease of rubber trees in Sri Lanka based on morphology, pathogenicity, and the analysis of internally transcribed spacer sequences of the nuclear ribosomal DNA. This study has been conducted to investigate the members of the C. acutatum species complex causing rubber leaf disease using a morphological and multi gene approach...
April 5, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28373043/synthesis-characterization-and-antifungal-evaluation-of-novel-1-2-3-triazolium-functionalized-starch-derivative
#13
Wenqiang Tan, Jingjing Zhang, Fang Luan, Lijie Wei, Qing Li, Fang Dong, Zhanyong Guo
1,2,3-Triazolium-functionalized starch derivative was obtained by straightforward quaternization of the synthesized starch derivative bearing 1,2,3-triazole with benzyl bromide by combining the robust attributes of cuprous-catalyzed azide-alkyne cycloaddition. These novel starch derivatives were characterized by FTIR, UV-vis, (1)H NMR, (13)C NMR, and elemental analysis. Their antifungal activities against Colletotrichum lagenarium, Watermelon fusarium, and Phomopsis asparagi were investigated by hypha measurement in vitro...
April 1, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28348770/non-traumatic-keratitis-due-to-colletotrichum-truncatum
#14
Reina Llamos, Abdullah M S Al-Hatmi, Gerardo Martínez, Ferry Hagen, Rosario Velar, Alexeide de la Caridad Castillo Pérez, Jacques F Meis, María T Illnait-Zaragozí
INTRODUCTION: The fungal genus Colletotrichum is an uncommon cause of human infections. It has been implicated in cutaneous phaeohyphomycosis, artritis and keratitis secondary to traumatic implantation. CASE PRESENTATION: We report two cases of keratitis due Colletotrichum truncatum in middle-aged, immunocompetent persons without history of trauma. The aetiological agents were identified based on DNA sequencing. Azoles and echinocandins showed high minimal inhibitory concentrations while amphotericin B was ≤ 0...
August 2016: JMM Case Reports
https://www.readbyqxmd.com/read/28330129/the-recombinant-pea-defensin-drr230a-is-active-against-impacting-soybean-and-cotton-pathogenic-fungi-from-the-genera-fusarium-colletotrichum-and-phakopsora
#15
Ariane Ferreira Lacerda, Rafael Perseghini Del Sarto, Marilia Santos Silva, Erico Augusto Rosas de Vasconcelos, Roberta Ramos Coelho, Vanessa Olinto Dos Santos, Claudia Vieira Godoy, Claudine Dinali Santos Seixas, Maria Cristina Mattar da Silva, Maria Fatima Grossi-de-Sa
Plant defensins are antifungal peptides produced by the innate immune system plants developed to circumvent fungal infection. The defensin Drr230a, originally isolated from pea, has been previously shown to be active against various entomopathogenic and phytopathogenic fungi. In the present study, the activity of a yeast-expressed recombinant Drr230a protein (rDrr230a) was tested against impacting soybean and cotton fungi. First, the gene was subcloned into the yeast expression vector pPICZαA and expressed in Pichia pastoris...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28322849/trans-cinnamic-acid-and-xenorhabdus-szentirmaii-metabolites-synergize-the-potency-of-some-commercial-fungicides
#16
Selcuk Hazir, David I Shapiro-Ilan, Clive H Bock, Luis G Leite
Development of novel approaches for the control of fungal phytopathogens is desirable. In this study we hypothesized that the combination of commercial fungicides with certain enhancing agents could result in synergistic levels of control. Prior research has indicated that trans-cinnamic-acid (TCA), a metabolite of the bacteria Photorhabdus luminescens and metabolites of Xenorhabdus szentirmaii are particularly toxic to various phytpathogenic fungi when compared to metabolites of other Xenorhabdus or Photorhabdus spp...
March 18, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28301718/the-wheat-lr34-multipathogen-resistance-gene-confers-resistance-to-anthracnose-and-rust-in-sorghum
#17
Wendelin Schnippenkoetter, Clive Lo, Guoquan Liu, Katherine Dibley, Wai Lung Chan, Jodie White, Ricky Milne, Alexander Zwart, Eunjung Kwong, Beat Keller, Ian Godwin, Simon G Krattinger, Evans Lagudah
The ability of the wheat Lr34 multipathogen resistance gene (Lr34res) to function across a wide taxonomic boundary was investigated in transgenic Sorghum bicolor. Increased resistance to sorghum rust and anthracnose disease symptoms following infection with the biotrophic pathogen Puccinia purpurea and the hemibiotroph Colletotrichum sublineolum, respectively, occurred in transgenic plants expressing the Lr34res ABC transporter. Transgenic sorghum lines that highly expressed the wheat Lr34res gene exhibited immunity to sorghum rust compared to the low-expressing single copy Lr34res genotype that conferred partial resistance...
March 16, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28296933/are-duplicated-genes-responsible-for-anthracnose-resistance-in-common-bean
#18
Larissa Carvalho Costa, Rafael Storto Nalin, Magno Antonio Patto Ramalho, Elaine Aparecida de Souza
The race 65 of Colletotrichum lindemuthianum, etiologic agent of anthracnose in common bean, is distributed worldwide, having great importance in breeding programs for anthracnose resistance. Several resistance alleles have been identified promoting resistance to this race. However, the variability that has been detected within race has made it difficult to obtain cultivars with durable resistance, because cultivars may have different reactions to each strain of race 65. Thus, this work aimed at studying the resistance inheritance of common bean lines to different strains of C...
2017: PloS One
https://www.readbyqxmd.com/read/28283954/genome-shuffling-of-colletotrichum-lini-for-improving-3%C3%AE-7%C3%AE-15%C3%AE-trihydroxy-5-androsten-17-one-production-from-dehydroepiandrosterone
#19
Jin Sun, Hui Li, Yu Ni, Xiaomei Zhang, Jinsong Shi, Zhenghong Xu
3β,7α,15α-Trihydroxy-5-androsten-17-one (7α,15α-diOH-DHEA) is a key intermediate of the novel oral contraceptive Yasmin. It can be catalyzed from dehydroepiandrosterone (DHEA) through Colletotrichum lini. Improvement of 7α,15α-diOH-DHEA production was performed through recursive protoplast fusion of C. lini ST in a genome shuffling format. 7α,15α-diOH-DHEA yield of the best performing recombinant C. lini ST-F307 reached 6.08 g/L from 10 g/L DHEA, and this was 94.9% higher than that of the initial C...
March 10, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28280027/draft-genome-assembly-of-colletotrichum-chlorophyti-a-pathogen-of-herbaceous-plants
#20
P Gan, M Narusaka, A Tsushima, Y Narusaka, Y Takano, K Shirasu
Colletotrichum chlorophyti is a fungal pathogen that infects various herbaceous plants, including crops such as legumes, tomato, and soybean. Here, we present the genome of C. chlorophyti NTL11, isolated from tomato. Analysis of this genome will allow a clearer understanding of the molecular mechanisms underlying fungal host range and pathogenicity.
March 9, 2017: Genome Announcements
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