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https://www.readbyqxmd.com/read/29102684/overview-of-selected-virulence-attributes-in-aspergillus-fumigatus-candida-albicans-cryptococcus-neoformans-trichophyton-rubrum-and-exophiala-dermatitidis
#1
REVIEW
Hazal Boral, Banu Metin, Aylin Döğen, Seyedmojtaba Seyedmousavi, Macit Ilkit
The incidence of fungal diseases has been increasing since 1980, and is associated with excessive morbidity and mortality, particularly among immunosuppressed patients. Of the known 625 pathogenic fungal species, infections caused by the genera Aspergillus, Candida, Cryptococcus, and Trichophyton are responsible for more than 300 million estimated episodes of acute or chronic infections worldwide. In addition, a rather neglected group of opportunistic fungi known as black yeasts and their filamentous relatives cause a wide variety of recalcitrant infections in both immunocompetent and immunosuppressed hosts...
November 1, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/29102309/challenges-in-culture-negative-cases-of-madurella-mycetomatis-a-case-report-re-accentuating-pcr-as-an-essential-diagnostic-tool
#2
S K, S Das, D Pandhi, G Rai, M A Ansari, C Gupta, S Haque, S A Dar
Identification of dematiaceous fungi responsible for black-grain mycetoma has remained cumbersome and time consuming for years leading to delayed diagnosis and thereby increased agony to patients. Moreover, difficult morphology of some of these fungi demanding enough expertise for species identification in addition to culture-negativity has often led to misdiagnosis and hence inapt treatment to the patients. We report the identification of Madurella mycetomatis from culture-negative black granules discharged from foot nodular lesions of a 27 years old male using PCR followed by sequencing of the internal transcribed spacer region...
October 25, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/29097475/draft-genome-sequences-of-the-black-rock-fungus-knufia-petricola-and-its-spontaneous-nonmelanized-mutant
#3
Donatella Tesei, Hakim Tafer, Caroline Poyntner, Guadalupe Piñar, Ksenija Lopandic, Katja Sterflinger
The fungal genus Knufia mostly comprises extremotolerant species from environmental sources, especially rock surfaces. The draft genome sequence of the rock fungus Knufia petricola presented here is the first whole-genome sequence of the only species among black fungi known to have a nonmelanized spontaneous mutant.
November 2, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29067036/arbuscular-mycorrhizal-symbiosis-alleviates-salt-stress-in-black-locust-through-improved-photosynthesis-water-status-and-k-na-homeostasis
#4
Jie Chen, Haoqiang Zhang, Xinlu Zhang, Ming Tang
Soil salinization and the associated land degradation are major and growing ecological problems. Excess salt in soil impedes plant photosynthetic processes and root uptake of water and nutrients such as K(+). Arbuscular mycorrhizal (AM) fungi can mitigate salt stress in host plants. Although, numerous studies demonstrate that photosynthesis and water status are improved by mycorrhizae, the molecular mechanisms involved have received little research attention. In the present study, we analyzed the effects of AM symbiosis and salt stress on photosynthesis, water status, concentrations of Na(+) and K(+), and the expression of several genes associated with photosynthesis (RppsbA, RppsbD, RprbcL, and RprbcS) and genes coding for aquaporins or membrane transport proteins involved in K(+) and/or Na(+) uptake, translocation, or compartmentalization homeostasis (RpSOS1, RpHKT1, RpNHX1, and RpSKOR) in black locust...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29062304/comparative-genomics-of-sibling-species-of-fonsecaea-associated-with-human-chromoblastomycosis
#5
Vania A Vicente, Vinícius A Weiss, Amanda Bombassaro, Leandro F Moreno, Flávia F Costa, Roberto T Raittz, Aniele C Leão, Renata R Gomes, Anamelia L Bocca, Gheniffer Fornari, Raffael J A de Castro, Jiufeng Sun, Helisson Faoro, Michelle Z Tadra-Sfeir, Valter Baura, Eduardo Balsanelli, Sandro R Almeida, Suelen S Dos Santos, Marcus de Melo Teixeira, Maria S Soares Felipe, Mariana Machado Fidelis do Nascimento, Fabio O Pedrosa, Maria B Steffens, Derlene Attili-Angelis, Mohammad J Najafzadeh, Flávio Queiroz-Telles, Emanuel M Souza, Sybren De Hoog
Fonsecaea and Cladophialophora are genera of black yeast-like fungi harboring agents of a mutilating implantation disease in humans, along with strictly environmental species. The current hypothesis suggests that those species reside in somewhat adverse microhabitats, and pathogenic siblings share virulence factors enabling survival in mammal tissue after coincidental inoculation driven by pathogenic adaptation. A comparative genomic analysis of environmental and pathogenic siblings of Fonsecaea and Cladophialophora was undertaken, including de novo assembly of F...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29044220/structure-of-melanins-from-the-fungi-ochroconis-lascauxensis-and-ochroconis-anomala-contaminating-rock-art-in-the-lascaux-cave
#6
José Maria De la Rosa, Pedro M Martin-Sanchez, Santiago Sanchez-Cortes, Bernardo Hermosin, Heike Knicker, Cesareo Saiz-Jimenez
Two novel species of the fungal genus Ochroconis, O. lascauxensis and O. anomala have been isolated from the walls of the Lascaux Cave, France. The interest in these fungi and their melanins lies in the formation of black stains on the walls and rock art which threatens the integrity of the paintings. Here we report solid-state cross polarization magic-angle spinning (13)C and (15)N nuclear magnetic resonance (NMR) spectroscopy and surface-enhanced Raman spectroscopy (SERS) of the melanins extracted from the mycelia of O...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28946118/comparative-study-of-eco-and-cytotoxicity-during-biotransformation-of-anthraquinone-dye-alizarin-blue-black-b-in-optimized-cultures-of-microscopic-fungi
#7
Kamila Rybczyńska-Tkaczyk, Agata Święciło, Konrad A Szychowski, Teresa Korniłłowicz-Kowalska
The aim of this study was to select optimal conditions (C and N sources, initial pH and temperature) for biodecolorization of 0.03% anthraquinone dye Alizarin Blue Black B (ABBB) by microscopic fungi: Haematonectria haematococca BwIII43, K37 and Trichoderma harzianum BsIII33. The phenolic compounds, phytotoxicity (Lepidium sativum L.), biotoxicity (Microtox), cytotoxicity and yeast viability assay were performed to determine the extent of ABBB detoxification. Biodecolorization and detoxification of 0.03% ABBB in H...
January 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28900256/genomic-and-transcriptomic-analysis-of-the-toluene-degrading-black-yeast-cladophialophora-immunda
#8
Barbara Blasi, Hakim Tafer, Christina Kustor, Caroline Poyntner, Ksenija Lopandic, Katja Sterflinger
Cladophialophora immunda is an ascomycotal species belonging to the group of the black yeasts. These fungi have a thick and melanized cell wall and other physiological adaptations that allows them to cope with several extreme physical and chemical conditions. Member of the group can colonize some of the most extremophilic environments on Earth. Cladophialophora immunda together with a few other species of the order Chaetothyriales show a special association with hydrocarbon polluted environments. The finding that the fungus is able to completely mineralize toluene makes it an interesting candidate for bioremediation purposes...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28840358/ectomycorrhizal-fungi-reduce-the-light-compensation-point-and-promote-carbon-fixation-of-pinus-thunbergii-seedlings-to-adapt-to-shade-environments
#9
Liang Shi, Jie Wang, Binhao Liu, Kazuhide Nara, Chunlan Lian, Zhenguo Shen, Yan Xia, Yahua Chen
We examined the effects of three ectomycorrhizal (ECM) symbionts on the growth and photosynthesis capacity of Japanese black pine (Pinus thunbergii) seedlings and estimated physiological and photosynthetic parameters such as the light compensation point (LCP), biomass, and phosphorus (Pi) concentration of P. thunbergii seedlings. Through this investigation, we documented a new role of ectomycorrhizal (ECM) fungi: enhancement of the survival and competitiveness of P. thunbergii seedlings under low-light condition by reducing the LCP of seedlings...
November 2017: Mycorrhiza
https://www.readbyqxmd.com/read/28813732/gastric-zygomycosis-in-a-previously-healthy-56-year-old-male
#10
Ashwyna Sunassee, Desirae M Muirhead
Zygomycosis refers to invasive fungal infections caused by fungi belonging to the phylum zygomycota. Infections generally occur in immunocompromised individuals. The following case is of a previously healthy 56 year-oldmale admitted to the hospital following a motor vehicle accident. During his hospitalization, there was a significant drop in hemoglobin with no obvious source of bleeding. This prompted the clinician to insert a nasogastric tube which returned at least 2 liters of black fluid and led to an upper gastrointestinal endoscopy...
April 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28794466/a-family-of-archaea-like-carboxylesterases-preferentially-expressed-in-the-symbiotic-phase-of-the-mychorrizal-fungus-tuber-melanosporum
#11
Davide Cavazzini, Guido Grossi, Elisabetta Levati, Francesca Vallese, Barbara Montanini, Angelo Bolchi, Giuseppe Zanotti, Simone Ottonello
An increasing number of esterases is being revealed by (meta) genomic sequencing projects, but few of them are functionally/structurally characterized, especially enzymes of fungal origin. Starting from a three-member gene family of secreted putative "lipases/esterases" preferentially expressed in the symbiotic phase of the mycorrhizal fungus Tuber melanosporum ("black truffle"), we show here that these enzymes (TmelEST1-3) are dimeric, heat-resistant carboxylesterases capable of hydrolyzing various short/medium chain p-nitrophenyl esters...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28771577/a-survey-of-the-mycobiota-associated-with-larvae-of-the-black-soldier-fly-hermetia-illucens-reared-for-feed-production
#12
Ilaria Varotto Boccazzi, Matteo Ottoboni, Elena Martin, Francesco Comandatore, Lisa Vallone, Thomas Spranghers, Mia Eeckhout, Valeria Mereghetti, Luciano Pinotti, Sara Epis
Feed security, feed quality and issues surrounding the safety of raw materials are always of interest to all livestock farmers, feed manufacturers and competent authorities. These concerns are even more important when alternative feed ingredients, new product developments and innovative feeding trends, like insect-meals, are considered. The black soldier fly (Hermetia illucens) is considered a good candidate to be used as feed ingredient for aquaculture and other farm animals, mainly as an alternative protein source...
2017: PloS One
https://www.readbyqxmd.com/read/28723243/pathogenicity-of-nectriaceous-fungi-on-avocado-in-australia
#13
Louisamarie E Parkinson, Roger G Shivas, Elizabeth K Dann
Black root rot is a severe disease of young avocado trees in Australia causing black necrotic roots, tree stunting, and leaf drop prior to tree death. Nectriaceous fungi (Nectriaceae, Hypocreales), are commonly isolated from symptomatic roots. This research tested the pathogenicity of 19 isolates from Calonectria, Cylindrocladiella, Dactylonectria, Gliocladiopsis, and Ilyonectria, spp. collected from young avocado trees and other hosts. Glasshouse pathogenicity tests with 'Reed' avocado (Persea americana) seedlings confirmed that Calonectria ilicicola is a severe pathogen of avocado, causing stunting, wilting, and seedling death within 5 weeks of inoculation...
December 2017: Phytopathology
https://www.readbyqxmd.com/read/28720979/first-report-of-phyllosticta-citricarpa-and-description-of-two-new-species-p-%C3%A2-paracapitalensis-and-p-%C3%A2-paracitricarpa-from-citrus-in-europe
#14
V Guarnaccia, J Z Groenewald, H Li, C Glienke, E Carstens, V Hattingh, P H Fourie, P W Crous
The genus Phyllosticta occurs worldwide, and contains numerous plant pathogenic, endophytic and saprobic species. Phyllosticta citricarpa is the causal agent of Citrus Black Spot disease (CBS), affecting fruits and leaves of several citrus hosts (Rutaceae), and can also be isolated from asymptomatic citrus tissues. Citrus Black Spot occurs in citrus-growing regions with warm summer rainfall climates, but is absent in countries of the European Union (EU). Phyllosticta capitalensis is morphologically similar to P...
June 2017: Studies in Mycology
https://www.readbyqxmd.com/read/28698459/dietary-natural-products-for-prevention-and-treatment-of-breast-cancer
#15
REVIEW
Ya Li, Sha Li, Xiao Meng, Ren-You Gan, Jiao-Jiao Zhang, Hua-Bin Li
Breast cancer is the most common cancer among females worldwide. Several epidemiological studies suggested the inverse correlation between the intake of vegetables and fruits and the incidence of breast cancer. Substantial experimental studies indicated that many dietary natural products could affect the development and progression of breast cancer, such as soy, pomegranate, mangosteen, citrus fruits, apple, grape, mango, cruciferous vegetables, ginger, garlic, black cumin, edible macro-fungi, and cereals. Their anti-breast cancer effects involve various mechanisms of action, such as downregulating ER-α expression and activity, inhibiting proliferation, migration, metastasis and angiogenesis of breast tumor cells, inducing apoptosis and cell cycle arrest, and sensitizing breast tumor cells to radiotherapy and chemotherapy...
July 8, 2017: Nutrients
https://www.readbyqxmd.com/read/28592546/rapid-and-robust-identification-of-the-agents-of-black-grain-mycetoma-by-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry
#16
Mark Fraser, Andrew M Borman, Elizabeth M Johnson
Eumycetoma, a chronic fungal infection endemic in India, Indonesia, and parts of Africa and South and Central America, follows traumatic implantation of saprophytic fungi and frequently requires radical surgery or amputation in the absence of appropriate treatment. Fungal species that can cause black-grain mycetomas include Madurella spp., Falciformispora spp., Trematosphaeria grisea, Nigrograna mackinnonii, Pseudochaetosphaeronema larense, Medicopsis romeroi, and Emarellia spp. Rhytidhysteron rufulum and Parathyridaria percutanea cause similar subcutaneous infections, but these infections lack the draining sinuses and fungal grains characteristic of eumycetoma...
August 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28507410/isolation-and-identification-of-fungi-associated-with-spoilt-fruits-vended-in-gwagwalada-market-abuja-nigeria
#17
Samuel Mailafia, God'spower Richard Okoh, Hamza Olatunde K Olabode, Ramatu Osanupin
AIM: Annual reports have shown that 20% of fruits and vegetables produced are lost to spoilage. This study was undertaken to isolate and identify fungi that are associated with spoilt fruits commonly sold in Gwagwalada market, Abuja, and recommend appropriate control measure. MATERIALS AND METHODS: The study was conducted in Gwagwalada metropolis, Gwagwalada Area Council of the Federal Capital Territory, Abuja, Nigeria. A total of 100 spoilt fruits which include pawpaw (Carica papaya), orange (Citrus sinensis), tomato (Lycopersicon esculentum), pineapple (Ananas comosus), and watermelon (Citrullus vulgaris) were purchased and examined for the presence of fungal organisms using standard methods...
April 2017: Veterinary World
https://www.readbyqxmd.com/read/28478966/a-rare-case-of-multiple-brain-abscess-and-probably-disseminated-phaeohyphomycosis-due-to-cladophialophora-bantiana-in-an-immunosuppressed-individual-from-india
#18
S Lahiri Mukhopadhyay, A Mahadevan, V H Bahubali, R Dawn Bharath, A R Prabhuraj, S Maji, N Siddaiah
Cladophialophora bantiana, a dematiaceous neurotropic mold causes rare and lethal brain abscess, commonly in immunocompetent hosts. We report a rare and probably a case of disseminated infection with this black mold in an immunosuppressed individual from India. A 55-year-old diabetic male presented with severe headache, blurred-vision, behavioural abnormalities, eye-pain and ear-discharge. He was undergoing treatment for hypertension, prostatomegaly and obstructive pulmonary disease. He was on steroids for the past six years for uveitis...
May 3, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28473711/mixed-reproductive-strategies-competitive-mating-type-distribution-and-life-cycle-of-fourteen-black-morel-species
#19
Xi-Hui Du, Qi Zhao, En-Hua Xia, Li-Zhi Gao, Franck Richard, Zhu L Yang
Morchella species are well known world-round as popular and prized edible fungi due to their unique culinary flavor. Recently, several species have been successfully cultivated in China. However, their reproductive modes are still unknown, and their basic biology needs to be elucidated. Here, we use the morel genome information to investigate mating systems and life cycles of fourteen black morel species. Mating type-specific primers were developed to screen and genotype ascospores, hymenia and stipes from 223 ascocarps of the 14 species from Asia and Europe...
May 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28463981/breaking-continuous-potato-cropping-with-legumes-improves-soil-microbial-communities-enzyme-activities-and-tuber-yield
#20
Shuhao Qin, Stephen Yeboah, Li Cao, Junlian Zhang, Shangli Shi, Yuhui Liu
This study was conducted to explore the changes in soil microbial populations, enzyme activity, and tuber yield under the rotation sequences of Potato-Common vetch (P-C), Potato-Black medic (P-B) and Potato-Longdong alfalfa (P-L) in a semi-arid area of China. The study also determined the effects of continuous potato cropping (without legumes) on the above mentioned soil properties and yield. The number of bacteria increased significantly (p < 0.05) under P-B rotation by 78%, 85% and 83% in the 2, 4 and 7-year continuous cropping soils, respectively compared to P-C rotation...
2017: PloS One
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