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Phialophora

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https://www.readbyqxmd.com/read/29785041/dark-septate-endophytes-isolated-from-a-xerophyte-plant-promote-the-growth-of-ammopiptanthus-mongolicus-under-drought-condition
#1
Xia Li, Xueli He, Lifeng Hou, Ying Ren, Shaojie Wang, Fang Su
Dark septate endophytes (DSE) may facilitate plant growth and stress tolerance in stressful ecosystems. However, little is known about the response of plants to non-host DSE fungi isolated from other plants, especially under drought condition. This study aimed to seek and apply non-host DSE to evaluate their growth promoting effects in a desert species, Ammopiptanthus mongolicus, under drought condition. Nine DSE strains isolated from a super-xerophytic shrub, Gymnocarpos przewalskii, were identified and used as the non-host DSE...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769615/indoor-wet-cells-as-a-habitat-for-melanized-fungi-opportunistic-pathogens-on-humans-and-other-vertebrates
#2
Xiaofang Wang, Wenying Cai, A H G Gerrits van den Ende, Junmin Zhang, Ting Xie, Liyan Xi, Xiqing Li, Jiufeng Sun, Sybren de Hoog
Indoor wet cells serve as an environmental reservoir for a wide diversity of melanized fungi. A total of 313 melanized fungi were isolated at five locations in Guangzhou, China. Internal transcribed spacer (rDNA ITS) sequencing showed a preponderance of 27 species belonging to 10 genera; 64.22% (n = 201) were known as human opportunists in the orders Chaetothyriales and Venturiales, potentially causing cutaneous and sometimes deep infections. Knufia epidermidis was the most frequently encountered species in bathrooms (n = 26), while in kitchens Ochroconis musae (n = 14), Phialophora oxyspora (n = 12) and P...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29669009/melanin-quantification-and-protection-against-oxidative-stress-in-chromoblastomycosis-agents
#3
Daiane Heidrich, Valeriano Antonio Corbellini, Sandra Denise Camargo Mendes, Elissa Kerli Fernandes, Letícia Lazzarotto, Amanda Carvalho Ribeiro, Régis Adriel Zanette, Maria Lúcia Scroferneker
Chromoblastomycosis (CBM) is a chronic cutaneous and subcutaneous infection caused by melanized fungal species. We quantified the extractable melanin of 77 strains of CBM agents distributed within five genera. Moreover, resistance to oxidative stress was evaluated in strains exposed or not to the melanin inhibitor tricyclazole. The median percentage of melanin mass extracted from dry fungal mass varied from 0.69 (Rhinocladiella similis) to 3.81 (Phialophora americana). Inhibition of melanin synthesis decreased survival rates to hydrogen peroxide...
April 14, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29581111/combination-of-amphotericin-b-and-terbinafine-against-melanized-fungi-associated-with-chromoblastomycosis
#4
S Deng, W Lei, G S de Hoog, L Yang, R G Vitale, H Rafati, M Seyedmousavi, A Tolooe, H van der Lee, W Liao, P E Verweij, S Seyedmousavi
Our in vitro studies showed that a combination of amphotericin B and terbinafine had synergistic effects against the majority of melanized fungi associated with chromoblastomycosis (CBM) and similar infections, including those with Cladophialophora carrionii , Cladophialophora arxii , Exophiala dermatitidis , Exophiala spinifera , Fonsecaea monophora , Fonsecaea nubica , Fonsecaea pedrosoi , and Phialophora verrucosa. This drug combination could provide an option for the treatment of severe or unresponsive cases of CBM, particularly in cases due to species of Fonsecaea and Cladophialophora ...
June 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29151624/biodiversity-and-human-pathogenicity-of-phialophora-verrucosa-and-relatives-in-chaetothyriales
#5
Y Li, J Xiao, G S de Hoog, X Wang, Z Wan, J Yu, W Liu, R Li
Phialophora as defined by its type species P. verrucosa is a genus of Chaetothyriales , and a member of the group known as 'black yeasts and relatives'. Phialophora verrucosa has been reported from mutilating human infections such as chromoblastomycosis, disseminated phaeohyphomycosis and mycetoma, while morphologically similar fungi are rather commonly isolated from the environment. Phenotypes are insufficient for correct species identification, and molecular data have revealed significant genetic variation within the complex of species currently identified as P...
June 2017: Persoonia
https://www.readbyqxmd.com/read/29080677/impaired-specific-antifungal-immunity-in-card9-deficient-patients-with-phaeohyphomycosis
#6
Xiaowen Wang, Ruijun Zhang, Weiwei Wu, Yinggai Song, Zhe Wan, Wenling Han, Ruoyu Li
Phaeohyphomycosis is a group of severe infections caused by dematiaceous fungi. We previously identified CARD9 deficiencies in four Chinese patients with phaeohyphomycosis caused by Phialophora verrucosa. In this study, we sought to identify the genetic and immunological mechanisms underlying rare dematiaceous fungal infections in three otherwise healthy patients with phaeohyphomycosis caused by Exophiala spinifera, Ochroconis musae, and Corynespora cassiicola. CARD9 sequencing in these patients showed one mutation (p...
March 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29050189/-clinical-features-and-treatments-of-retrocorneal-fungal-infection
#7
J Cheng, H L Zhai, J Y Wang, L X Xie
Objective: To evaluate the clinical features of retrocorneal fungal infection and the therapeutic effects. Methods: This was a retrospective, noncomparative study of nine patients with retrocorneal fungal infection and an intact corneal epithelium treated at Qingdao Eye Hospital. The history, clinical features, diagnostic methods, pathogens and therapeutic effects were analyzed. Results: Five patients had a history of trauma by plant, two had a non-plant injury, and two had unidentified reasons. The duration between the initial onset and the first visit to our hospital was 7...
October 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28936837/-influence-of-tobacco-chuanminshen-violaceum-rotation-on-microbe-community-in-soil
#8
Dong-Yan Zhang, Jian Zhao, Shui-Ping Yang, Jing-Jing Mo, Da-Min He, Jun Wang, Jian-Yu Gou, Xue Zhang, Wei Jiang, Ming-Xia Wen
Soil microbes are the important indicator of soil quality. For exploring Chuanminshen violaceum planting to microbial effects in tobacco soil, this paper adopted Illumina MiSeq high-throughput sequencing to research the change of bacteria and fungi at the phylum and genus in the soil. The results showed that the Ch. violaceum planting increased the biodiversity of bacteria and fungi. The influence on fungi was greater than that on bacteria. It greatly increased the sequence of fungi, it obtained 32 978 16S rDNA and 32 229 18S rDNA sequence number...
December 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28716483/clinically-relevant-fungi-in-water-and-on-surfaces-in-an-indoor-swimming-pool-facility
#9
COMPARATIVE STUDY
Yuli Ekowati, Anne D van Diepeningen, Giuliana Ferrero, Maria D Kennedy, Ana Maria de Roda Husman, Franciska M Schets
The density of fungal contamination and the fungal diversity in an indoor swimming pool facility were assessed. A total of 16 surface samples and 6 water samples were analysed by using a combination of different (semi-) selective culture media. Isolated fungal colonies were identified to the genus or species level by sequencing of the internal transcribed spacer (ITS). The highest fungal counts in water and on surfaces were in the recreational pool (17CFU/100mL) and on a flexibeam (5.8CFU/cm2 ), respectively as compared with low counts (<0...
October 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28705394/melanization-and-ageing-are-not-drawbacks-for-successful-agro-transformation-of-dark-septate-endophytes
#10
Charlotte Berthelot, Yoann Perrin, Corinne Leyval, Damien Blaudez
Dark septate endophytes (DSEs) are melanin-enriched ascomycetous fungi that are abundant in stressed environments. However, little is known about their physiology and metabolism, and DSE genes have not been functionally characterized yet. Therefore developing molecular genetic tools to investigate the biological function of genes of interest in DSEs is of major significance. We investigated Agrobacterium tumefaciens-mediated transformation (ATMT) efficiency in eight DSE strains belonging to Cadophora sp., Cadophora malorum, Leptodontidium sp...
August 2017: Fungal Biology
https://www.readbyqxmd.com/read/28521510/differential-growth-promotion-of-poplar-and-birch-inoculated-with-three-dark-septate-endophytes-in-two-trace-element-contaminated-soils
#11
Charlotte Berthelot, Damien Blaudez, Corinne Leyval
Dark septate endophytes (DSEs) are abundant in stressful environments, including trace element (TE)-enriched soils. However, knowledge about the effects of DSEs on plant growth in such soils is poor compared to the well-known mycorrhizal fungi. The aim of this work was to evaluate the effects of three DSE strains isolated from TE-contaminated soils on the growth and mineral nutrition of Betula pendula and Populus tremula x alba grown on two contrasting TE-polluted soils. The three DSEs evenly colonized the two plant species in both soils...
December 2, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28466300/diversity-and-antimicrobial-activity-of-culturable-fungi-from-fishscale-bamboo-phyllostachys-heteroclada-in-china
#12
Ying-Ke Zhou, Xiao-Ye Shen, Cheng-Lin Hou
An important and useful bamboo species, fishscale bamboo (Phyllostachys heteroclada Oliver), is broadly distributed in Southeast China and has multiple purposes, including uses in cuisine, weaving, Chinese medicine and ecological protection. However, no previous studies have focused on the endophytes of this plant. In our article, a total of 127 fungal strains were first isolated from the healthy branches and leaves of common P. heteroclada. These endophytic fungi could be directly categorized into 50 morphotypes according to their culture characteristics, and their internal transcribed spacer (ITS) regions were analyzed for molecular identification...
June 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28194139/1-10-phenanthroline-5-6-dione-based-compounds-are-effective-in-disturbing-crucial-physiological-events-of-phialophora-verrucosa
#13
Marcela Queiroz Granato, Diego de Souza Gonçalves, Sergio Henrique Seabra, Malachy McCann, Michael Devereux, André Luis Souza Dos Santos, Lucimar Ferreira Kneipp
Phialophora verrucosa is a dematiaceous fungus able to cause chromoblastomycosis, phaeohyphomycosis and mycetoma. All these fungal diseases are extremely difficult to treat and often refractory to the current therapeutic approaches. Therefore, there is an urgent necessity to develop new antifungal agents to combat these mycoses. In this context, the aim of the present work was to investigate the effect of 1,10-phenanthroline-5,6-dione (phendione) and its metal-based derivatives [Ag(phendione)2]ClO4 = ([Ag(phendione)2](+)) and [Cu(phendione)3](ClO4)2...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27890087/molecular-phylogeny-diversity-community-structure-and-plant-growth-promoting-properties-of-fungal-endophytes-associated-with-the-corms-of-saffron-plant-an-insight-into-the-microbiome-of-crocus-sativus-linn
#14
Zahoor Ahmed Wani, Dania Nazir Mirza, Palak Arora, Syed Riyaz-Ul-Hassan
A total of 294 fungal endophytes were isolated from the corms of Crocus sativus at two stages of crocus life cycle collected from 14 different saffron growing sites in Jammu and Kashmir (J & K) State, India. Molecular phylogeny assigned them into 36 distinct internal transcribed spacer (ITS) genotypes which spread over 19 genera. The diversity of endophytes was higher at the dormant than at the vegetative stage. The Saffron microbiome was dominated by Phialophora mustea and Cadophora malorum, both are dark septate endophytes (DSEs)...
December 2016: Fungal Biology
https://www.readbyqxmd.com/read/27833296/three-rare-cases-of-cutaneous-phaeohyphomycosis
#15
Aditi Chhonkar, Deepti Kataria, Swagata Tambe, Chitra S Nayak
Phaeohyphomycosis is a chronic infectious condition caused by dematiaceous fungi which usually involve the skin and subcutaneous tissue. Subcutaneous phaeohyphomycosis is characterised by papulonodules, verrucous, hyperkeratotic or ulcerated plaques, cysts, abscesses, pyogranuloma, non-healing ulcers or sinuses. In India, commonly associated genera are Exophiala, Phialophora, Cladosporium, Curvularia, Fonsecaea and Alternaria. This condition involves the presence of brown-walled hyphal structures in the dermis and epidermis...
May 2016: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/27534128/a-pair-of-new-polyketide-enantiomers-from-three-endolichenic-fungal-strains-nigrospora-sphaerica-alternaria-alternata-and-phialophora-sp
#16
Jun-Wei He, Chuan-Xi Wang, Li Yang, Guo-Dong Chen, Dan Hu, Liang-Dong Guo, Xin-Sheng Yao, Hao Gao
A pair of new enantiomeric polyketides, (-)- and (+)-nigrosporaol A (1a and 1b), along with one related known compound, (+)-alternarienoic acid (2), were isolated from three endolichenic fungal strains, Nigrospora sphaerica (No.83-1-1-2), Alternaria alternata (No.58-8-4-1), and Phialophora sp.(No.96-1-8-1). Their structures, including the absolute configurations, were elucidated on the basis of spectroscopic methods, X-ray diffraction analysis, and the modified Mosher's method.
June 2016: Natural Product Communications
https://www.readbyqxmd.com/read/27421992/impairment-of-immune-response-against-dematiaceous-fungi-in-card9-knockout-mice
#17
Weiwei Wu, Ruijun Zhang, Xiaowen Wang, Yinggai Song, Zhengyang Liu, Wenling Han, Ruoyu Li
Dematiaceous fungi are a large group of pathogens that can cause a wide range of diseases in both immunocompetent and immunocompromised hosts. Based on our previous finding of caspase recruitment domain-containing protein 9 (CARD9) mutations in patients with subcutaneous phaeohyphomycosis caused by Phialophora verrucosa (P. verrucosa), we further investigated the exact role of CARD9 in the pathogenesis of phaeohyphomycosis using Card9 knockout (Card9 KO) mice. We showed that Card9 KO mice are profoundly susceptible to P...
October 2016: Mycopathologia
https://www.readbyqxmd.com/read/27364359/plant-growth-promotion-metabolite-production-and-metal-tolerance-of-dark-septate-endophytes-isolated-from-metal-polluted-poplar-phytomanagement-sites
#18
Charlotte Berthelot, Corinne Leyval, Julie Foulon, Michel Chalot, Damien Blaudez
Numerous studies address the distribution and the diversity of dark septate endophytes (DSEs) in the literature, but little is known about their ecological role and their effect on host plants, especially in metal-polluted soils. Seven DSE strains belonging to Cadophora, Leptodontidium, Phialophora and Phialocephala were isolated from roots of poplar trees from metal-polluted sites. All strains developed on a wide range of carbohydrates, including cell-wall-related compounds. The strains evenly colonized birch, eucalyptus and ryegrass roots in re-synthesis experiments...
October 2016: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/26961233/chronic-and-invasive-fungal-infections-in-a-family-with-card9-deficiency
#19
Ana Karina Alves de Medeiros, Evelyn Lodewick, Delfien J A Bogaert, Filomeen Haerynck, Sabine Van Daele, Bart Lambrecht, Sara Bosma, Laure Vanderdonckt, Olivier Lortholary, Mélanie Migaud, Jean-Laurent Casanova, Anne Puel, Fanny Lanternier, Jo Lambert, Lieve Brochez, Melissa Dullaers
Chronic mucocutaneous or invasive fungal infections are generally the result of primary or secondary immune dysfunction. Patients with autosomal recessive CARD9 mutations are also predisposed to recurrent mucocutaneous and invasive fungal infections with Candida spp., dermatophytes (e.g., Trichophyton spp.) and phaeohyphomycetes (Exophiala spp., Phialophora verrucosa). We study a consanguineous family of Turkish origin in which three members present with distinct clinical phenotypes of chronic mucocutaneous and invasive fungal infections, ranging from chronic mucocutaneous candidiasis (CMC) in one patient, treatment-resistant cutaneous dermatophytosis and deep dermatophytosis in a second patient, to CMC with Candida encephalitis and endocrinopathy in a third patient...
April 2016: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/26586868/draft-genome-sequence-of-the-ant-associated-fungus-phialophora-attae-cbs-131958
#20
Leandro F Moreno, J Benjamin Stielow, Michel de Vries, Vinicius A Weiss, Vania A Vicente, Sybren de Hoog
The black yeast Phialophora attae was isolated from the cuticle of tropical ant gynes. The ant-fungus association is sustained due to symbiotic evolutionary adaptations that allow fungal assimilation and tolerance of toxic compounds produced by the ant. The genome sequence of the first ant-associated fungus, P. attae, is presented here.
2015: Genome Announcements
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