A proposed model for understanding human-bacterial interactions:Space-time approach on community Escherichia coli occurrence and resistance phenomenon

Due to ecological effect, it is expected that population exposures to antimicrobial drugs may lead to microorganisms’ modifications, occasionally leading to resistance emergence. The present review was based on previous empirical data and on related literature search for quantitative empirical models exploring the human-bacterial interactions. Our previous studies have shown the emergence of ciprofloxacin resistant (CIP-R) Escherichia coli significantly related to previous specific levels of ciprofloxacin consumption and to urban clusters of CIP-R E. coli. The evidence of significant spatial clustering of antimicrobial resistance (ciprofloxacin resistance E. coli) reinforces the ecological effect hypothesis as a major drive in resistance emergence. In other words, human populations submitted to a certain ciprofloxacin or quinolone usage level may affect neighbours within certain geographical areas, not necessarily due to individual antimicrobial intake, but as a driving pressure over a modified circulating E. coli population. Apparently quantitative spatial-temporal analytical frameworks may be better for understanding human-bacterial interactions based on any of their epiphenomena (antimicrobial consumption, antimicrobial resistance, geno/phenotypic characteristics).

Antibacterial enhancement of antibiotic activity by Enterolobium contortisiliquum(Vell.)Morong

Objective: To identify the main chemical classes of compounds from aqueous extract of Enterolobium contortisiliquum(E. contortisiliquum) seed bark and to evaluate its antibacterial activity, as well as its potential to increase the activity of antibiotics against strains of Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli.Methods: Different classes of compounds in the aqueous extract of E. contortisiliquum were evaluated based on the visual changes in the coloration and the formation of precipitate after the addition of specific reagents. The antibacterial activity of the extract and its potential to increase of antibiotic activity of antibiotics drugs, gentamicin and norfloxacin was determined by using the microdilution method.Results: Our results demonstrated that the following secondary metabolites were presented in E. contortisiliquum seed bark: flavones, flavonols, xanthones, flavononols,chalcones, aurones, flavones and catechins. The extract itself had very low antibacterial activity against all bacterial strains tested(MIC ≥ 1024 μg/m L), but there was an increase in the antibiotic activity of gentamicin and norfloxacin when combined in the subinhibitory concentration(i.e., MIC/8).Conclusions: Our data suggests that E. contortisiliquum seed bark may be an alternative source for new drugs with the potential to increase antibiotic activity against different strains of bacteria.

Diversity and host assemblage of avian haemosporidians in different terrestrial ecoregions of Peru

Characterizing the diversity and structure of host–parasite communities is crucial to understandingtheir eco-evolutionary dynamics.Malaria and related haemosporidian parasites are responsible forfitness loss and mortality in bird species worldwide.However,despite exhibiting the greatest ornithologicalbiodiversity,avian haemosporidians from Neotropical regions are quite unexplored.Here,we analyze the genetic diversity of bird haemosporidian parasites(Plasmodium andHaemoproteus)in 1,336 individuals belonging to 206 bird species to explore for differences in diversityof parasite lineages and bird species across 5 well-differentiated Peruvian ecoregions.Wedetected 70 different haemosporidian lineages infecting 74 bird species.We showed that 25 out ofthe 70 haplotypes had not been previously recorded.Moreover,we also identified 81 new host–parasite interactions representing new host records for these haemosporidian parasites.Our outcomesrevealed that the effective diversity(as well as the richness,abundance,and Shannon–Weaver index)for both birds and parasite lineages was higher in Amazon basin ecoregions.Furthermore,we also showed that ecoregions with greater diversity of bird species also had highparasite richness,hence suggesting that host community is crucial in explaining parasite richness.Generalist parasites were found in ecoregions with lower bird diversity,implying that the abundanceand richness of hosts may shape the exploitation strategy followed by haemosporidian parasites.These outcomes reveal that Neotropical region is a major reservoir of unidentified haemosporidianlineages.Further studies analyzing host distribution and specificity of these parasites inthe tropics will provide important knowledge about phylogenetic relationships,phylogeography,and patterns of evolution and distribution of haemosporidian parasites.

Fungal diversity notes 491–602: taxonomic and phylogenetic contributions to fungal taxa

This is a continuity of a series of taxonomic and phylogenetic papers on the fungi where materials were collected from many countries,examined and described.In addition to extensive morphological descriptions and appropriate asexual and sexual connections,DNA sequence data are also analysed from concatenated datasets to infer phylogenetic relationships and substantiate systematic positions of taxa within appropriate ranks.Wherever new species or combinations are proposed,we apply an integrative approach using morphological and molecular data as well as ecological features wherever applicable.Notes on 112 fungal taxa are compiled in this paper including Biatriosporaceae and Roussoellaceae,Didysimulans gen.nov.,81 new species,18 new host records and new country records,five reference specimens,two new combinations,and three sexual and asexual morph reports.The new species are Amanita cornelii,A.emodotrygon,Angustimassarina alni,A.arezzoensis,A.italica,A.lonicerae,A.premilcurensis,Ascochyta italica,A.rosae,Austroboletus appendiculatus,Barriopsis thailandica,Berkleasmium ariense,Calophoma petasitis,Camarosporium laburnicola,C.moricola,C.grisea,C.ossea,C.paraincrustata,Colletotrichum sambucicola,Coprinopsis cerkezii,Cytospora gelida,Dacrymyces chiangraiensis,Didysimulans italica,D.mezzanensis,Entodesmium italica,Entoloma magnum,Evlachovaea indica,Exophiala italica,Favolus gracilisporus,Femsjonia monospora,Fomitopsis flabellata,F.roseoalba,Gongronella brasiliensis,Helvella crispoides,Hermatomyces chiangmaiensis,H.chromolaenae,Hysterium centramurum,Inflatispora caryotae,Inocybe brunneosquamulosa,I.luteobrunnea,I.rubrobrunnea,Keissleriella cirsii,Lepiota cylindrocystidia,L.flavocarpa,L.maerimensis,Lophiotrema guttulata,Marasmius luculentus,Morenoina calamicola,Moelleriella thanathonensis,Mucor stercorarius,Myrmecridium fluviae,Myrothecium septentrionale,Neosetophoma garethjonesii,Nigrograna cangshanensis,Nodulosphaeria guttulatum,N.multiseptata,N.sambuci,Panus subfasciatus,Paraleptosphaeria padi,Paraphaeosphaeria viciae,Parathyridaria robiniae,Penicillium punicae,Phaeosphaeria calamicola,Phaeosphaeriopsis yuccae,Pleurophoma italica,Polyporus brevibasidiosus,P.koreanus,P.orientivarius,P.parvovarius,P.subdictyopus,P.ulleungus,Pseudoasteromassaria spadicea,Rosellinia mearnsii,Rubroboletus demonensis,Russula yanheensis,Sigarispora muriformis,Sillia italica,Stagonosporopsis ailanthicola,Strobilomyces longistipitatus,Subplenodomus galicola and Wolfiporia pseudococos.The new combinations are Melanomma populina and Rubroboletus eastwoodiae.The reference specimens are Cookeina tricholoma,Gnomoniopsis sanguisorbae,Helvella costifera,Polythrincium trifolii and Russula virescens.The new host records and country records are Ascochyta medicaginicola,Boletellus emodensis,Cyptotrama asprata,Cytospora ceratosperma,Favolaschia auriscalpium,F.manipularis,Hysterobrevium mori,Lentinus sajor-caju,L.squarrosulus,L.velutinus,Leucocoprinus cretaceus,Lophiotrema vagabundum,Nothophoma quercina,Platystomum rosae,Pseudodidymosphaeria phlei,Tremella fuciformis,Truncatella spartii and Vaginatispora appendiculata and three sexual and asexual morphs are Aposphaeria corallinolutea, Dothiorabuxi and Hypocrella calendulina.

Fungal diversity notes 1036-1150:taxonomic and phylogenetic contributions on genera and species of fungal taxa

This article is the tenth series of the Fungal Diversity Notes,where 114 taxa distributed in three phyla,ten classes,30 orders and 53 families are described and illustrated.Taxa described in the present study include one new family(viz.Pseudoberkleasmiaceae in Dothideomycetes),five new genera(Caatingomyces,Cryptoschizotrema,Neoacladium,Paramassaria and Trochilispora)and 71 new species,(viz.Acrogenospora thailandica,Amniculicola aquatica,A.guttulata,Angustimassarina sylvatica,Blackwellomyces lateris,Boubovia gelatinosa,Buellia viridula,Caatingomyces brasiliensis,Calophoma humuli,Camarosporidiella mori,Canalisporium dehongense,Cantharellus brunneopallidus,C.griseotinctus,Castanediella meliponae,Coprinopsis psammophila,Cordyceps succavus,Cortinarius minusculus,C.subscotoides,Diaporthe italiana,D.rumicicola,Diatrypella delonicis,Dictyocheirospora aquadulcis,D.taiwanense,Digitodesmium chiangmaiense,Distoseptispora dehongensis,D.palmarum,Dothiorella styphnolobii,Ellisembia aurea,Falciformispora aquatic,Fomitiporia carpinea,F.lagerstroemiae,Grammothele aurantiaca,G.micropora,Hermatomyces bauhiniae,Jahnula queenslandica,Kamalomyces mangrovei,Lecidella yunnanensis,Micarea squamulosa,Muriphaeosphaeria angustifoliae,Neoacladium indicum,Neodidymelliopsis sambuci,Neosetophoma miscanthi,N.salicis,Nodulosphaeria aquilegiae,N.thalictri,Paramassaria samaneae,Penicillium circulare,P.geumsanense,P.mali-pumilae,P.psychrotrophicum,P.wandoense,Phaeoisaria siamensis,Phaeopoacea asparagicola,Phaeosphaeria penniseti,Plectocarpon galapagoense,Porina sorediata,Pseudoberkleasmium chiangmaiense,Pyrenochaetopsis sinensis,Rhizophydium koreanum,Russula prasina,Sporoschisma chiangraiense,Stigmatomyces chamaemyiae,S.cocksii,S.papei,S.tschirnhausii,S.vikhrevii,Thysanorea uniseptata,Torula breviconidiophora,T.polyseptata,Trochilispora schefflerae and Vaginatispora palmae).Further,twelve new combinations(viz.Cryptoschizotrema cryptotrema,Prolixandromyces australi,P.elongatus,P.falcatus,P.longispinae,P.microveliae,P.neoalardi,P.polhemorum,P.protuberans,P.pseudoveliae,P.tenuistipitis and P.umbonatus),an epitype is chosen for Cantharellus goossensiae,a reference specimen for Acrogenospora sphaerocephala and new synonym Prolixandromyces are designated.Twenty-four new records on new hosts and new geographical distributions are also reported(i.e.Acrostalagmus annulatus,Cantharellus goossensiae,Coprinopsis villosa,Dothiorella plurivora,Dothiorella rhamni,Dothiorella symphoricarposicola,Dictyocheirospora rotunda,Fasciatispora arengae,Grammothele brasiliensis,Lasiodiplodia iraniensis,Lembosia xyliae,Morenoina palmicola,Murispora cicognanii,Neodidymelliopsis farokhinejadii,Neolinocarpon rachidis,Nothophoma quercina,Peroneutypa scoparia,Pestalotiopsis aggestorum,Pilidium concavum,Plagiostoma salicellum,Protofenestella ulmi,Sarocladium kiliense,Tetraploa nagasakiensis and Vaginatispora armatispora).

Fungal diversity notes 603–708: taxonomic and phylogenetic notes on genera and species

This is the sixth in a series of papers where we bring collaborating mycologists together to produce a set of notes of several taxa of fungi.In this study we introduce a new family Fuscostagonosporaceae in Dothideomycetes.We also introduce the new ascomycete genera Acericola,Castellaniomyces,Dictyosporina and Longitudinalis and new species Acericola italica,Alternariaster trigonosporus,Amarenomyces dactylidis,Angustimassarina coryli,Astrocystis bambusicola,Castellaniomyces rosae,Chaetothyrina artocarpi,Chlamydotubeufia krabiensis,Colletotrichum lauri,Collodiscula chiangraiensis,Curvularia palmicola,Cytospora mali-sylvestris,Dictyocheirospora cheirospora,Dictyosporina ferruginea,Dothiora coronillae,Dothiora spartii,Dyfrolomyces phetchaburiensis,Epicoccum cedri,Epicoccum pruni,Fasciatispora calami,Fuscostagonospora cytisi,Grandibotrys hyalinus,Hermatomyces nabanheensis,Hongkongmyces thailandica,Hysterium rhizophorae,Jahnula guttulaspora,Kirschsteiniothelia rostrata,Koorchalomella salmonispora,Longitudinalis nabanheensis,Lophium zalerioides,Magnibotryascoma mali,Meliola clerodendri-infortunati,Microthyrium chinense,Neodidymelliopsis moricola,Neophaeocryptopus spartii,Nigrograna thymi,Ophiocordyceps cossidarum,Ophiocordyceps issidarum,Ophiosimulans plantaginis,Otidea pruinosa,Otidea stipitata,Paucispora kunmingense,Phaeoisaria microspora,Pleurothecium floriforme,Poaceascoma halophila,Periconia aquatica,Periconia submersa,Phaeosphaeria acaciae,Phaeopoacea muriformis,Pseudopithomyces kunmingnensis,Ramgea ozimecii,Sardiniella celtidis,Seimatosporium italicum,Setoseptoria scirpi,Torula gaodangensis and Vamsapriya breviconidiophora.We also provide an amended account of Rhytidhysteron to include apothecial ascomata and a J?hymenium.The type species of Ascotrichella hawksworthii(Xylariales genera incertae sedis),Biciliopsis leptogiicola(Sordariomycetes genera incertae sedis),Brooksia tropicalis(Micropeltidaceae),Bryochiton monascus(Teratosphaeriaceae),Bryomyces scapaniae(Pseudoperisporiaceae),Buelliella minimula(Dothideomycetes genera incertae sedis),Carinispora nypae(Pseudoastrosphaeriellaceae),Cocciscia hammeri(Verrucariaceae),Endoxylina astroidea(Diatrypaceae),Exserohilum turcicum(Pleosporaceae),Immotthia hypoxylon(Roussoellaceae),Licopolia franciscana(Vizellaceae),Murispora rubicunda(Amniculicolaceae)and Doratospora guianensis(synonymized under Rizalia guianensis,Trichosphaeriaceae)were reexamined and descriptions,illustrations and discussion on their familial placement are given based on phylogeny and morphological data.New host records or new country reports are provided for Chlamydotubeufia huaikangplaensis,Colletotrichum fioriniae,Diaporthe subclavata,Diatrypella vulgaris,Immersidiscosia eucalypti,Leptoxyphium glochidion,Stemphylium vesicarium,Tetraploa yakushimensis and Xepicula leucotricha.Diaporthe baccae is synonymized under Diaporthe rhusicola.A reference specimen is provided for Periconia minutissima.Updated phylogenetic trees are provided for most families and genera.We introduce the new basidiomycete species Agaricus purpurlesquameus,Agaricus rufusfibrillosus,Lactifluus holophyllus,Lactifluus luteolamellatus,Lactifluus pseudohygrophoroides,Russula benwooii,Russula hypofragilis,Russula obscurozelleri,Russula parapallens,Russula phoenicea,Russula pseudopelargonia,Russula pseudotsugarum,Russula rhodocephala,Russula salishensis,Steccherinum amapaense,Tephrocybella constrictospora,Tyromyces amazonicus and Tyromyces angulatus and provide updated trees to the genera.We also introduce Mortierella formicae in Mortierellales,Mucoromycota and provide an updated phylogenetic tree.