-
Clinical Microbiology and Infection :... Apr 2014Mycoses summarized in the hyalohyphomycosis group are heterogeneous, defined by the presence of hyaline (non-dematiaceous) hyphae. The number of organisms implicated in...
Mycoses summarized in the hyalohyphomycosis group are heterogeneous, defined by the presence of hyaline (non-dematiaceous) hyphae. The number of organisms implicated in hyalohyphomycosis is increasing and the most clinically important species belong to the genera Fusarium, Scedosporium, Acremonium, Scopulariopsis, Purpureocillium and Paecilomyces. Severely immunocompromised patients are particularly vulnerable to infection, and clinical manifestations range from colonization to chronic localized lesions to acute invasive and/or disseminated diseases. Diagnosis usually requires isolation and identification of the infecting pathogen. A poor prognosis is associated with fusariosis and early therapy of localized disease is important to prevent progression to a more aggressive or disseminated infection. Therapy should include voriconazole and surgical debridement where possible or posaconazole as salvage treatment. Voriconazole represents the first-line treatment of infections due to members of the genus Scedosporium. For Acremonium spp., Scopulariopsis spp., Purpureocillium spp. and Paecilomyces spp. the optimal antifungal treatment has not been established. Management usually consists of surgery and antifungal treatment, depending on the clinical presentation.
Topics: Antifungal Agents; Fusarium; Humans; Hyalohyphomycosis; Scedosporium
PubMed: 24548001
DOI: 10.1111/1469-0691.12465 -
Studies in Mycology 2011Over 200 new sequences are generated for members of the genus Acremonium and related taxa including ribosomal small subunit sequences (SSU) for phylogenetic analysis and...
Over 200 new sequences are generated for members of the genus Acremonium and related taxa including ribosomal small subunit sequences (SSU) for phylogenetic analysis and large subunit (LSU) sequences for phylogeny and DNA-based identification. Phylogenetic analysis reveals that within the Hypocreales, there are two major clusters containing multiple Acremonium species. One clade contains Acremonium sclerotigenum, the genus Emericellopsis, and the genus Geosmithia as prominent elements. The second clade contains the genera Gliomastixsensu stricto and Bionectria. In addition, there are numerous smaller clades plus two multi-species clades, one containing Acremonium strictum and the type species of the genus Sarocladium, and, as seen in the combined SSU/LSU analysis, one associated subclade containing Acremonium breve and related species plus Acremonium curvulum and related species. This sequence information allows the revision of three genera. Gliomastix is revived for five species, G. murorum, G. polychroma, G. tumulicola, G. roseogrisea, and G. masseei. Sarocladium is extended to include all members of the phylogenetically distinct A. strictum clade including the medically important A. kiliense and the protective maize endophyte A. zeae. Also included in Sarocladium are members of the phylogenetically delimited Acremonium bacillisporum clade, closely linked to the A. strictum clade. The genus Trichothecium is revised following the principles of unitary nomenclature based on the oldest valid anamorph or teleomorph name, and new combinations are made in Trichothecium for the tightly interrelated Acremonium crotocinigenum, Spicellum roseum, and teleomorph Leucosphaerinaindica. Outside the Hypocreales, numerous Acremonium-like species fall into the Plectosphaerellaceae, and A. atrogriseum falls into the Cephalothecaceae.
PubMed: 21523192
DOI: 10.3114/sim.2011.68.06 -
Studies in Mycology Jun 2023is acknowledged as a highly ubiquitous genus including saprobic, parasitic, or endophytic fungi that inhabit a variety of environments. Species of this genus are...
is acknowledged as a highly ubiquitous genus including saprobic, parasitic, or endophytic fungi that inhabit a variety of environments. Species of this genus are extensively exploited in industrial, commercial, pharmaceutical, and biocontrol applications, and proved to be a rich source of novel and bioactive secondary metabolites. has been recognised as a taxonomically difficult group of ascomycetes, due to the reduced and high plasticity of morphological characters, wide ecological distribution and substrate range. Recent advances in molecular phylogenies, revealed that is highly polyphyletic and members of belong to at least three distinct orders of , of which numerous orders, families and genera with acremonium-like morphs remain undefined. To infer the phylogenetic relationships and establish a natural classification for acremonium-like taxa, systematic analyses were conducted based on a large number of cultures with a global distribution and varied substrates. A total of 633 cultures with acremonium-like morphology, including 261 ex-type cultures from 89 countries and a variety of substrates including soil, plants, fungi, humans, insects, air, and water were examined. An overview phylogenetic tree based on three loci (ITS, LSU, ) was generated to delimit the orders and families. Separate trees based on a combined analysis of four loci (ITS, LSU, , ) were used to delimit species at generic and family levels. Combined with the morphological features, host associations and ecological analyses, acremonium-like species evaluated in the present study are currently assigned to 63 genera, and 14 families in and , mainly in the families , and and five new hypocrealean families, namely , , , and . Among them, 17 new genera and 63 new combinations are proposed, with descriptions of 65 new species. Furthermore, one epitype and one neotype are designated to stabilise the taxonomy and use of older names. Results of this study demonstrated that most species of grouped in genera of , including the type . . A phylogenetic backbone tree is provided for , in which 183 species are recognised and 39 well-supported genera are resolved, including 10 new genera. Additionally, and are proposed as potential DNA barcodes for the identification of taxa in . L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous. : L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous. L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, Rämä, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, Rämä, L. Cai & Crous, L.W. Hou, L. Cai & Crous, K. Fletcher, F.C. Küpper & P. van West, L.W. Hou, L. Cai & Crous, L.W. Hou, Rämä, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, Lechat & J. Fourn., L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai, Rämä & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous; Trichothecium hongkongense L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous; L.W. Hou, L. Cai & Crous, L.W. Hou, L. Cai & Crous. (Sukapure & Thirum.) L.W. Hou, L. Cai & Crous, (Malloch) L.W. Hou, L. Cai & Crous, (Tad. Ito .) L.W. Hou, L. Cai & Crous, (W. Gams) L.W. Hou, L. Cai & Crous, (Negroni) L.W. Hou, L. Cai & Crous, (Sigler ) L.W. Hou, L. Cai & Crous, (Pers.) L.W. Hou, L. Cai & Crous, (Summerb. ) L.W. Hou, L. Cai & Crous, (A. Giraldo et al.) L.W. Hou, L. Cai & Crous, (W. Gams & Lodha) L.W. Hou, L. Cai & Crous, (Gams) L.W. Hou, L. Cai & Crous, (Berk. & Broome) L.W. Hou, L. Cai & Crous, (Thirum. & Sukapure) L.W. Hou, L. Cai & Crous, (W. Gams) L.W. Hou, L. Cai & Crous, (Malloch & Cain) L.W. Hou, L. Cai & Crous, (Malloch & Cain) L.W. Hou, L. Cai & Crous, (C.A. Jørg.) L.W. Hou, L. Cai & Crous, (Lechat & J. Fourn.) L.W. Hou, L. Cai & Crous, (W. Gams) L.W. Hou, L. Cai & Crous, (Lechat & Gardiennet) L.W. Hou, L. Cai & Crous, (P. Karst.) L.W. Hou, L. Cai & Crous, (W. Gams) L.W. Hou, L. Cai & Crous, (Samuels) L.W. Hou, L. Cai & Crous, (Samuels) L.W. Hou, L. Cai & Crous, (Lechat & J. Fourn.) L.W. Hou, L. Cai & Crous, (Berk. & Broome) L.W. Hou, L. Cai & Crous, (R.F. Castañeda) L.W. Hou, L. Cai & Crous, (Sawada) L.W. Hou, L. Cai & Crous, (Jaap) L.W. Hou, L. Cai & Crous, (A. Giraldo ) L.W. Hou, L. Cai & Crous, (A. Giraldo .) L.W. Hou, L. Cai & Crous, (Samuels) L.W. Hou, L. Cai & Crous, (Samuels)L.W. Hou, L. Cai & Crous, (J.F. Li .) L.W. Hou, L. Cai & Crous, (Fuckel) L.W. Hou, L. Cai & Crous, (Lechat & J. Fourn.) L.W. Hou, L. Cai & Crous, (W. Gams) L.W. Hou, L. Cai & Crous, (Matr.)L.W. Hou, L. Cai & Crous, (Gams & Sivasith.) L.W. Hou, L. Cai & Crous, (Nicot) L.W. Hou, L. Cai & Crous, (W. Gams & Veenb.-Rijks) L.W. Hou, L. Cai & Crous, (A. Giraldo .) L.W. Hou, L. Cai & Crous, (A. Giraldo ) L.W. Hou, L. Cai & Crous, (Samuels) L.W. Hou, L. Cai & Crous, (Nicot) L.W. Hou, L. Cai & Crous, (W. Gams) L.W. Hou, L. Cai & Crous, (A. Giraldo ) L.W. Hou, L. Cai & Crous, (A. Giraldo ) L.W. Hou, L. Cai & Crous, (Petch) L.W. Hou, L. Cai & Crous; (W. Gams & J. Lacey) L.W. Hou, L. Cai & Crous; (W. Gams) L.W. Hou, L. Cai & Crous; : (W. Gams) L.W. Hou, L. Cai & Crous; (W. Gams) L.W. Hou, L. Cai & Crous; (Sukapure & Thirum.) L.W. Hou, L. Cai & Crous; (K.L. Pang .) L.W. Hou, L. Cai & Crous; (W. Gams) L.W. Hou, L. Cai & Crous; (W. Gams) L.W. Hou, L. Cai & Crous, (W. Gams) L.W. Hou, L. Cai & Crous; (W. Gams .) L.W. Hou, L. Cai & Crous; (W. Gams) L.W. Hou, L. Cai & Crous, (Sukapure & Thirum.) L.W. Hou, L. Cai & Crous; (C.H. Dickinson) L.W. Hou, L. Cai & Crous, (G. Sm.) L.W. Hou, L. Cai & Crous. J.C. Schmidt ex Fr. Matr. Hou LW, Giraldo A, Groenewald JZ, Rämä T, Summerbell RC, Zang P, Cai L, Crous PW (2023). Redisposition of acremonium-like fungi in . : 23-203. doi: 10.3114/sim.2023.105.02.
PubMed: 38895703
DOI: 10.3114/sim.2023.105.02 -
Journal of Fungi (Basel, Switzerland) Jan 2022Sorbicillinoids are a family of hexaketide metabolites with a characteristic sorbyl side chain residue. Sixty-nine sorbicillinoids from fungi, newly identified from 2016... (Review)
Review
Sorbicillinoids are a family of hexaketide metabolites with a characteristic sorbyl side chain residue. Sixty-nine sorbicillinoids from fungi, newly identified from 2016 to 2021, are summarized in this review, including their structures and bioactivities. They are classified into monomeric, dimeric, trimeric, and hybrid sorbicillinoids according to their basic structural features, with the main groups comprising both monomeric and dimeric sorbicillinoids. Some of the identified sorbicillinoids have special structures such as ustilobisorbicillinol A, and sorbicillasins A and B. The majority of sorbicillinoids have been reported from fungi genera such as , , , and , with some sorbicillinoids exhibiting cytotoxic, antimicrobial, anti-inflammatory, phytotoxic, and α-glucosidase inhibitory activities. In recent years, marine-derived, extremophilic, plant endophytic, and phytopathogenic fungi have emerged as important resources for diverse sorbicillinoids with unique skeletons. The recently revealed biological activities of sorbicillinoids discovered before 2016 are also described in this review.
PubMed: 35050002
DOI: 10.3390/jof8010062 -
Microbial Biotechnology May 2010Penicillins and cephalosporins are β-lactam antibiotics widely used in human medicine. The biosynthesis of these compounds starts by the condensation of the amino acids... (Review)
Review
Penicillins and cephalosporins are β-lactam antibiotics widely used in human medicine. The biosynthesis of these compounds starts by the condensation of the amino acids L-α-aminoadipic acid, L-cysteine and L-valine to form the tripeptide δ-L-α-aminoadipyl-l-cysteinyl-D-valine catalysed by the non-ribosomal peptide 'ACV synthetase'. Subsequently, this tripeptide is cyclized to isopenicillin N that in Penicillium is converted to hydrophobic penicillins, e.g. benzylpenicillin. In Acremonium and in streptomycetes, isopenicillin N is later isomerized to penicillin N and finally converted to cephalosporin. Expression of genes of the penicillin (pcbAB, pcbC, pendDE) and cephalosporin clusters (pcbAB, pcbC, cefD1, cefD2, cefEF, cefG) is controlled by pleitropic regulators including LaeA, a methylase involved in heterochromatin rearrangement. The enzymes catalysing the last two steps of penicillin biosynthesis (phenylacetyl-CoA ligase and isopenicillin N acyltransferase) are located in microbodies, as shown by immunoelectron microscopy and microbodies proteome analyses. Similarly, the Acremonium two-component CefD1-CefD2 epimerization system is also located in microbodies. This compartmentalization implies intracellular transport of isopenicillin N (in the penicillin pathway) or isopenicillin N and penicillin N in the cephalosporin route. Two transporters of the MFS family cefT and cefM are involved in transport of intermediates and/or secretion of cephalosporins. However, there is no known transporter of benzylpenicillin despite its large production in industrial strains.
Topics: Acremonium; Anti-Bacterial Agents; Biosynthetic Pathways; Gene Expression Regulation, Bacterial; Gene Expression Regulation, Fungal; Organelles; Penicillium; Streptomyces; beta-Lactams
PubMed: 21255328
DOI: 10.1111/j.1751-7915.2009.00123.x -
Transactions of the American... 1946
Topics: Acremonium; Humans; Keratitis
PubMed: 16693431
DOI: No ID Found -
Indian Journal of Microbiology Mar 2022Fungi are one of the most widely distributed microorganisms in the environment, including food such as fruits, vegetables and other crops, posing a potential threat to...
Fungi are one of the most widely distributed microorganisms in the environment, including food such as fruits, vegetables and other crops, posing a potential threat to food safety and human health. The aim of this study was to determine the diversity, intensity and drug resistance of potentially pathogenic filamentous fungi isolated from the fresh raspberries ( L.). A total of 50 strains belonging to genera , , , , , , and were tested for drug resistance against 11 antifungals by disc diffusion and gradient strips methods. The average mycological contamination in the examined samples of raspberries amounted to 4.34 log CFU/g. The was isolated from all tested samples, followed by and with a frequency of 61% and 34%, respectively. The highest level of drug resistance was observed for genera and strains recorded a wide variation in drug resistance as revealed by susceptibility with amphotericin B and voriconzole with MICs ranged from 0.5-4 µg/ml and posaconazole with MICs ranging from 3-8 µg/ml. All fungal strains showed 100% resistance to caspofungin, fluconazole and flucytosine with both the methods, and 100% resistance to micafungin and anidulafungin in the gradient strip method.
PubMed: 35068614
DOI: 10.1007/s12088-021-00966-y -
Molecules (Basel, Switzerland) Jan 2018Cyclic depsipeptides (CDPs) are cyclopeptides in which amide groups are replaced by corresponding lactone bonds due to the presence of a hydroxylated carboxylic acid in... (Review)
Review
Cyclic depsipeptides (CDPs) are cyclopeptides in which amide groups are replaced by corresponding lactone bonds due to the presence of a hydroxylated carboxylic acid in the peptide structure. These peptides sometimes display additional chemical modifications, including unusual amino acid residues in their structures. This review highlights the occurrence, structures and biological activities of the fungal CDPs reported until October 2017. About 352 fungal CDPs belonging to the groups of cyclic tri-, tetra-, penta-, hexa-, hepta-, octa-, nona-, deca-, and tridecadepsipeptides have been isolated from fungi. These metabolites are mainly reported from the genera , , , , , , , , and . They are known to exhibit various biological activities such as cytotoxic, phytotoxic, antimicrobial, antiviral, anthelmintic, insecticidal, antimalarial, antitumoral and enzyme-inhibitory activities. Some CDPs (i.e., PF1022A, enniatins and destruxins) have been applied as pharmaceuticals and agrochemicals.
Topics: Depsipeptides; Fungi; Molecular Structure; Structure-Activity Relationship
PubMed: 29342967
DOI: 10.3390/molecules23010169 -
Journal of Clinical Microbiology Jan 2011Some species in the polyphyletic fungal genus Acremonium are important opportunist pathogens. Determining the actual spectrum of species and their incidence in the...
Some species in the polyphyletic fungal genus Acremonium are important opportunist pathogens. Determining the actual spectrum of species and their incidence in the clinical setting, however, has long been hampered because of the difficulties encountered in phenotypic species-level identification. The goal of this study was to re-identify a large number of clinical isolates morphologically and to confirm the identifications by comparing sequences of the internal transcribed spacer region of the rRNA gene of these isolates to those of type or reference strains of well-known Acremonium species. Of the 119 isolates referred to a United States reference laboratory under the name Acremonium, only 75 were identified morphologically as belonging to that genus. The remainder (44 isolates) were identified as belonging to other morphologically similar genera. The Acremonium clinical isolates were related to species of Hypocreales, Sordariales, and of an incertae sedis family of ascomycetes, Plectosphaerellaceae. A total of 50 of the 75 Acremonium isolates (67%) could be identified by molecular means, the prevalent species being Acremonium kiliense (15 isolates), A. sclerotigenum-A. egyptiacum (11 isolates), A. implicatum (7 isolates), A. persicinum (7 isolates), and A. atrogriseum (4 isolates). One of the most interesting findings of our study was that we identified several species among this large collection of clinical isolates that had not previously been reported from human infections, and we failed to confirm other Acremonium species, such as A. potronii, A. recifei, and A. strictum, that had been considered significant. The most common anatomic sites for Acremonium isolates were the respiratory tract (41.3%), nails (10.7%), and the eye (9.3%). Antifungal susceptibility testing demonstrated high MICs for all agents tested, except for terbinafine. Since numerous isolates could not be identified, we concluded that the list of opportunistic Acremonium species is far from be complete and that a considerable number of additional species will be discovered.
Topics: Acremonium; Antifungal Agents; DNA, Fungal; DNA, Ribosomal Spacer; Humans; Microbial Sensitivity Tests; Microscopy; Molecular Sequence Data; Mycoses; Phylogeny; Sequence Analysis, DNA; United States
PubMed: 21068274
DOI: 10.1128/JCM.00793-10