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[PMID]: 28829025 [Au] Autor: Blackburn MB; Farrar RR; Sparks ME; Kuhar D; Mitchell A; Gundersen-Rindal DE [Ad] Endereço: Invasive Insect Biocontrol and Behavior Laboratory, USDA, ARS, Bldg 007, Rm 301, BARC-West, Beltsville, MD 20705, USA. [Ti] Título: Chromobacterium sphagni sp. nov., an insecticidal bacterium isolated from Sphagnum bogs. [So] Source: Int J Syst Evol Microbiol;67(9):3417-3422, 2017 Sep. [Is] ISSN: 1466-5034 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: Sixteen isolates of Gram-reaction-negative, motile, violet-pigmented bacteria were isolated from Sphagnum bogs in West Virginia and Maine, USA. 16S rRNA gene sequences and fatty acid analysis revealed a high degree of relatedness among the isolates, and genome sequencing of two isolates, IIBBL 14B-1T and IIBBL 37-2 (from West Virginia and Maine, respectively), revealed highly similar genomic sequences. The average nucleotide identity (gANI) calculated for these two isolates was found to be in excess of 99 %, but did not exceed 88 % when comparing either isolate with genomic sequences of Chromobacterium violaceum ATCC 12472T, C. haemolyticum DSM 19808T, C. piscinae ND17, C. subtsugae PRAA4-1T, C. vaccinii MWU205T or C. amazonense CBMAI 310T. Collectively, gANI and 16S rRNA gene sequence comparisons suggested that isolates IIBBL 14B-1T and IIBBL 37-2 were most closely related to C. subtsugae, but represented a distinct species. We propose the name Chromobacterium sphagni sp. nov. for this taxon; the type strain is IIBBL 14B-1T (=NRRL B-67130T=JCM 31882T). [Mh] Termos MeSH primário: Chromobacterium/classificação Filogenia Sphagnopsida/microbiologia Zonas Úmidas [Mh] Termos MeSH secundário: Técnicas de Tipagem Bacteriana Composição de Bases Chromobacterium/genética Chromobacterium/isolamento & purificação DNA Bacteriano/genética Maine RNA Ribossômico 16S/genética Análise de Sequência de DNA West Virginia [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (DNA, Bacterial); 0 (RNA, Ribosomal, 16S) [Em] Mês de entrada: 1709 [Cu] Atualização por classe: 170920 [Lr] Data última revisão: 170920 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170823 [St] Status: MEDLINE [do] DOI: 10.1099/ijsem.0.002127

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[PMID]: 28688372 [Au] Autor: Roe HM; Elliott SM; Patterson RT [Ad] Endereço: School of Natural and Built Environment, Queen's University Belfast, Belfast BT7 1NN, United Kingdom. Electronic address: h.roe@qub.ac.uk. [Ti] Título: Re-assessing the vertical distribution of testate amoeba communities in surface peats: Implications for palaeohydrological studies. [So] Source: Eur J Protistol;60:13-27, 2017 Aug. [Is] ISSN: 1618-0429 [Cp] País de publicação: Germany [La] Idioma: eng [Ab] Resumo: Testate amoeba-derived transfer functions are frequently used in peatland palaeohydrological studies and involve the development of training sets from surficial peats. However, within acrotelmic peats, considerable vertical variation in assemblage composition can occur, particularly along Sphagnum stems, which may limit the representation of the associated 'contemporary' testate amoeba samples as analogues for the peatland surface. This paper presents contiguous testate amoeba assemblage data from nine monoliths collected from different peatland microforms (hummock, hollow, lawn) in three Sphagnum dominated ombrotrophic peatlands in Ontario and Quebec, eastern Canada. The aim is to: (i) gain a greater understanding of the vertical distribution of xerophilous/hygrophilous taxa along Sphagnum stems; (ii) determine the vertical extent of live/encysted taxa along this gradient; and (iii) assess the significance of this distribution on surface sampling protocols. The results show that testate amoeba communities in the uppermost acrotelmic peat layers display considerable variability. This may reflect a complex interplay of abiotic and biotic controls, including moisture, temperature, light and other characteristics, food availability, and mineral particle availability for test construction. These findings underline the complexity of testate amoeba community structure and highlight the importance of analysing both living and dead Sphagnum stem sections when developing calibration sets. [Mh] Termos MeSH primário: Amoeba/fisiologia Biodiversidade Solo/parasitologia [Mh] Termos MeSH secundário: Amoeba/classificação Hidrologia Paleontologia Dinâmica Populacional Sphagnopsida/parasitologia Zonas Úmidas [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Soil) [Em] Mês de entrada: 1708 [Cu] Atualização por classe: 171116 [Lr] Data última revisão: 171116 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170709 [St] Status: MEDLINE

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[PMID]: 28623799 [Au] Autor: Milicevic T; Anicic Urosevic M; Vukovic G; Skrivanj S; Relic D; Frontasyeva MV; Popovic A [Ad] Endereço: Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia. [Ti] Título: Assessment of species-specific and temporal variations of major, trace and rare earth elements in vineyard ambient using moss bags. [So] Source: Ecotoxicol Environ Saf;144:208-215, 2017 Oct. [Is] ISSN: 1090-2414 [Cp] País de publicação: Netherlands [La] Idioma: eng [Ab] Resumo: Since the methodological parameters of moss bag biomonitoring have rarely been investigated for the application in agricultural areas, two mosses, Sphagnum girgensohnii (a species of the most recommended biomonitoring genus) and Hypnum cupressiforme (commonly available), were verified in a vineyard ambient. The moss bags were exposed along transects in six vineyard parcels during the grapevine season (March‒September 2015). To select an appropriate period for the reliable 'signal' of the element enrichment in the mosses, the bags were simultaneously exposed during five periods (3 × 2 months, 1 × 4 months, and 1 × 6 months). Assuming that vineyard is susceptible to contamination originated from different agricultural treatments, a wide range of elements (41) were determined in the moss and topsoil samples. The mosses were significantly enriched by the elements during the 2-month bag exposure which gradually increasing up to 6 months, but Cu and Ni exhibited the noticeable fluctuations during the grapevine season. However, the 6-month exposure of moss bags could be recommended for comparative studies among different vineyards because it reflects the ambient pollution comprising unpredictable treatments of grapevine applied during the whole season. Although higher element concentrations were determined in S. girgensohnii than H. cupressiforme, both species reflected the spatio-temporal changes in the ambient element content. Moreover, the significant correlation of the element (Cr, Cu, Sb, and Ti) concentrations between the mosses, and the same pairs of the elements correlated within the species, imply the comparable use of S. girgensohnii and H. cupressiforme in the vineyard (agricultural) ambient. Finally, both the moss bags and the soil analyses suggest that vineyard represents a dominant diffuse pollution source of As, Cr, Cu, Ni, Fe, and V. [Mh] Termos MeSH primário: Poluentes Atmosféricos/análise Bryopsida/química Monitoramento Ambiental/métodos Metais Terras Raras/análise Sphagnopsida/química Oligoelementos/análise [Mh] Termos MeSH secundário: Fazendas Estações do Ano Sérvia Especificidade da Espécie Vitis/crescimento & desenvolvimento [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Air Pollutants); 0 (Metals, Rare Earth); 0 (Trace Elements) [Em] Mês de entrada: 1711 [Cu] Atualização por classe: 171110 [Lr] Data última revisão: 171110 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170618 [St] Status: MEDLINE

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[PMID]: 28609959 [Au] Autor: Dózsa-Farkas K; Csitári B; Felföldi T [Ad] Endereço: Eötvös Loránd University, Department of Systematic Zoology and Ecology, H-1117 Budapest, Pázmány Péter sétány 1/C, Hungary.. kdozsafarkas@gmail.com. [Ti] Título: A new Cernosvitoviella species (Clitellata: Enchytraeidae) and its comparison with other Cernosvitoviella species from Sphagnum mires in Hungary. [So] Source: Zootaxa;4254(3):322-338, 2017 Apr 18. [Is] ISSN: 1175-5334 [Cp] País de publicação: New Zealand [La] Idioma: eng [Ab] Resumo: Results of a comparative investigation on five Cernosvitoviella species from Hungarian Sphagnum mires including their distribution and the description of a new species, Cernosvitoviella farkasi sp. n., are presented in this paper. Cernosvitoviella atrata, C. aggtelekiensis, C. crassoductus and C. farkasi sp. n. could be easily distinguished from each other based on both morphological and molecular taxonomic analyses. However, C. minor seems to be a species complex on the basis of these investigations, so it was referred as C. minor sensu lato. The status of the C. minor variants requires further studies. [Mh] Termos MeSH primário: Oligoquetos [Mh] Termos MeSH secundário: Animais Hungria Sphagnopsida Zonas Úmidas [Pt] Tipo de publicação: JOURNAL ARTICLE [Em] Mês de entrada: 1708 [Cu] Atualização por classe: 170809 [Lr] Data última revisão: 170809 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170615 [St] Status: MEDLINE [do] DOI: 10.11646/zootaxa.4254.3.2

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[PMID]: 28441611 [Au] Autor: Sorrentino MC; Capozzi F; Giordano S; Spagnuolo V [Ad] Endereço: Università degli Studi di Napoli Federico II, Dipartimento di Biologia, Via Cinthia 4, 80126, Napoli, Italy. [Ti] Título: Genotoxic effect of Pb and Cd on in vitro cultures of Sphagnum palustre: An evaluation by ISSR markers. [So] Source: Chemosphere;181:208-215, 2017 Aug. [Is] ISSN: 1879-1298 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: In the present work, the genotoxic effect of cadmium and lead supplied in a laboratory trial, was investigated for the first time in the moss Sphagnum palustre, by ISSR molecular markers. A total of 169 reproducible bands were obtained with 12 primers, ten of which gave polymorphisms (i.e., appearance/disappearance of bands), indicating a clear genotoxic effect induced by the metals. Both metals induced a decrease of the genome template stability in a dose dependent manner. At concentration >10 Cd also induced a general toxic effect in S. palustre, leading to chlorophyll degradation and moss death. Moreover, we followed the fate of supplied heavy metals into the moss tissue by SEM-EDX to see if they entered the cells. SEM-EDX observations on moss cultures treated with equimolar concentrations of the two metals showed that most Pb precipitated in form of particles on moss surface, while Cd did not aggregate in particles and was not found on moss surface. In light of these findings, we concluded that probably Pb induced a genotoxic effect at lower intracellular concentrations than Cd. [Mh] Termos MeSH primário: Cádmio/toxicidade Chumbo/toxicidade Sphagnopsida/metabolismo [Mh] Termos MeSH secundário: Briófitas/genética Briófitas/metabolismo Cádmio/metabolismo Precipitação Química Instabilidade Genômica Metais Pesados/toxicidade Mutagênicos Polimorfismo Genético Sphagnopsida/genética [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Metals, Heavy); 0 (Mutagens); 00BH33GNGH (Cadmium); 2P299V784P (Lead) [Em] Mês de entrada: 1708 [Cu] Atualização por classe: 170811 [Lr] Data última revisão: 170811 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170426 [St] Status: MEDLINE

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[PMID]: 28426754 [Au] Autor: Oke TA; Hager HA [Ad] Endereço: Department of Integrative Biology, University of Guelph, Guelph, ON, Canada. [Ti] Título: Assessing environmental attributes and effects of climate change on Sphagnum peatland distributions in North America using single- and multi-species models. [So] Source: PLoS One;12(4):e0175978, 2017. [Is] ISSN: 1932-6203 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: The fate of Northern peatlands under climate change is important because of their contribution to global carbon (C) storage. Peatlands are maintained via greater plant productivity (especially of Sphagnum species) than decomposition, and the processes involved are strongly mediated by climate. Although some studies predict that warming will relax constraints on decomposition, leading to decreased C sequestration, others predict increases in productivity and thus increases in C sequestration. We explored the lack of congruence between these predictions using single-species and integrated species distribution models as proxies for understanding the environmental correlates of North American Sphagnum peatland occurrence and how projected changes to the environment might influence these peatlands under climate change. Using Maximum entropy and BIOMOD modelling platforms, we generated single and integrated species distribution models for four common Sphagnum species in North America under current climate and a 2050 climate scenario projected by three general circulation models. We evaluated the environmental correlates of the models and explored the disparities in niche breadth, niche overlap, and climate suitability among current and future models. The models consistently show that Sphagnum peatland distribution is influenced by the balance between soil moisture deficit and temperature of the driest quarter-year. The models identify the east and west coasts of North America as the core climate space for Sphagnum peatland distribution. The models show that, at least in the immediate future, the area of suitable climate for Sphagnum peatland could expand. This result suggests that projected warming would be balanced effectively by the anticipated increase in precipitation, which would increase Sphagnum productivity. [Mh] Termos MeSH primário: Mudança Climática Modelos Biológicos Sphagnopsida [Mh] Termos MeSH secundário: América do Norte Especificidade da Espécie [Pt] Tipo de publicação: JOURNAL ARTICLE [Em] Mês de entrada: 1709 [Cu] Atualização por classe: 170907 [Lr] Data última revisão: 170907 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170421 [St] Status: MEDLINE [do] DOI: 10.1371/journal.pone.0175978

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[PMID]: 28363138 [Au] Autor: Delaine M; Bernard N; Gilbert D; Recourt P; Armynot du Châtelet E [Ad] Endereço: Laboratoire Chrono-Environnement, UMR 6249, Université de Bourgogne Franche-Comté, 16 route de Gray, 25030 Besançon Cedex, France; Université de Lille, UMR LOG 8187 CNRS, ULCO Laboratoire d'Océanologie et Géosciences, Bâtiment SN5, 59655 Villeneuve-d'Ascq, France. Electronic address: maxence.delaine [Ti] Título: Origin and diversity of testate amoebae shell composition: Example of Bullinularia indica living in Sphagnum capillifolium. [So] Source: Eur J Protistol;59:14-25, 2017 Jun. [Is] ISSN: 1618-0429 [Cp] País de publicação: Germany [La] Idioma: eng [Ab] Resumo: Testate amoebae are free-living shelled protists that build a wide range of shells with various sizes, shapes, and compositions. Recent studies showed that xenosomic testate amoebae shells could be indicators of atmospheric particulate matter (PM) deposition. However, no study has yet been conducted to assess the intra-specific mineral, organic, and biologic grain diversity of a single xenosomic species in a natural undisturbed environment. This study aims at providing new information about grain selection to develop the potential use of xenosomic testate amoebae shells as bioindicators of the multiple-origin mineral/organic diversity of their proximal environment. To fulfil these objectives, we analysed the shell content of 38 Bullinularia indica individuals, a single xenosomic testate amoeba species living in Sphagnum capillifolium, by scanning electron microscope (SEM) coupled with X-ray spectroscopy. The shells exhibited high diversities of mineral, organic, and biomineral grains, which confirms their capability to recycle xenosomes. Mineral grain diversity and size of B. indica matched those of the atmospheric natural mineral PM deposited in the peatbog. Calculation of grain size sorting revealed a discrete selection of grains agglutinated by B. indica. These results are a first step towards understanding the mechanisms of particle selection by xenosomic testate amoebae in natural conditions. [Mh] Termos MeSH primário: Lobosea/química Lobosea/classificação Sphagnopsida/parasitologia [Mh] Termos MeSH secundário: Lobosea/fisiologia Lobosea/ultraestrutura Microscopia Eletrônica de Varredura Tamanho da Partícula Espectrometria por Raios X [Pt] Tipo de publicação: JOURNAL ARTICLE [Em] Mês de entrada: 1707 [Cu] Atualização por classe: 170714 [Lr] Data última revisão: 170714 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170401 [St] Status: MEDLINE

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[PMID]: 28302803 [Au] Autor: Pennisi E [Ti] Título: How plants learned to breathe. [So] Source: Science;355(6330):1110-1111, 2017 Mar 17. [Is] ISSN: 1095-9203 [Cp] País de publicação: United States [La] Idioma: eng [Mh] Termos MeSH primário: Evolução Biológica Dióxido de Carbono/metabolismo Estômatos de Plantas/metabolismo [Mh] Termos MeSH secundário: Arabidopsis/metabolismo Brachypodium/metabolismo Fósseis Microscopia Eletrônica de Varredura Estômatos de Plantas/ultraestrutura Sphagnopsida/metabolismo [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 142M471B3J (Carbon Dioxide) [Em] Mês de entrada: 1710 [Cu] Atualização por classe: 171026 [Lr] Data última revisão: 171026 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170318 [St] Status: MEDLINE [do] DOI: 10.1126/science.355.6330.1110

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[PMID]: 28292672 [Au] Autor: Lizonová Z; Horsák M [Ad] Endereço: Department of Botany and Zoology, Masaryk University, Kotlárská 2, 611 37 Brno, Czech Republic. Electronic address: zuzanag2@gmail.com. [Ti] Título: Contrasting diversity of testate amoebae communities in Sphagnum and brown-moss dominated patches in relation to shell counts. [So] Source: Eur J Protistol;58:135-142, 2017 Apr. [Is] ISSN: 1618-0429 [Cp] País de publicação: Germany [La] Idioma: eng [Ab] Resumo: Ecological studies of peatland testate amoebae are generally based on totals of 150 individuals per sample. However, the suitability of this standard has never been assessed for alkaline habitats such as spring fens. We explored the differences in testate amoeba diversity between Sphagnum and brown-moss microhabitats at a mire site with a highly diversified moss layer which reflects the small-scale heterogeneity in groundwater chemistry. Relationships between sampling efficiency and sample completeness were explored using individual-based species accumulation curves and the effort required to gain an extra species was assessed. Testate amoeba diversity differed substantially between microhabitats, with brown mosses hosting on average twice as many species and requiring greater shell totals to reach comparable sample analysis efficiency as for Sphagnum. Thus, for samples from alkaline conditions an increase in shell totals would be required and even an overall doubling up to 300 individuals might be considered for reliable community description. Our small-scale data are likely not robust enough to provide an ultimate solution for the optimization of shell totals. However, the results proved that testate amoebae communities from acidic and alkaline environments differ sharply in both species richness and composition and they might call for different methodological approaches. [Mh] Termos MeSH primário: Amoeba/classificação Amoeba/fisiologia Biodiversidade Briófitas/parasitologia Ecologia/métodos Sphagnopsida/parasitologia [Mh] Termos MeSH secundário: Ecossistema [Pt] Tipo de publicação: JOURNAL ARTICLE [Em] Mês de entrada: 1704 [Cu] Atualização por classe: 170413 [Lr] Data última revisão: 170413 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170316 [St] Status: MEDLINE

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[PMID]: 28262376 [Au] Autor: Capozzi F; Adamo P; Di Palma A; Aboal JR; Bargagli R; Fernandez JA; Lopez Mahia P; Reski R; Tretiach M; Spagnuolo V; Giordano S [Ad] Endereço: Department of Biology, University of Naples Federico II, Campus Monte S. Angelo, Via Cinthia 4, 80126 Naples, Italy. [Ti] Título: Sphagnum palustre clone vs native Pseudoscleropodium purum: A first trial in the field to validate the future of the moss bag technique. [So] Source: Environ Pollut;225:323-328, 2017 Jun. [Is] ISSN: 1873-6424 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: Although a large body of literature exists on the use of transplanted mosses for biomonitoring of air pollution, no article has addressed so far the use and the accumulation performance of a cloned moss for this purpose. In this work, a direct comparison of metal accumulation between bags filled with a Sphagnum palustre L. clone or with native Pseudoscleropodium purum Hedw., one of the most used moss species in biomonitoring surveys, was investigated. The test was performed in sites with different atmospheric contamination levels selected in urban, industrial, agricultural and background areas of Italy and Spain. Among the eighteen elements investigated, S. palustre was significantly enriched in 10 elements (Al, Ba, Cr, Cu, Fe, Hg, Pb, Sr, V and Zn), while P. purum was enriched only in 6 elements (Al, Ba, Cu, Hg, Pb and Sr), and had a consistently lower uptake capacity than S. palustre. The clone proved to be more sensitive in terms of metal uptake and showed a better performance as a bioaccumulator, providing a higher accumulation signal and allowing a finer distinction among the different land uses and levels of pollution. The excellent uptake performance of the S. palustre clone compared to the native P. purum and its low and stable baseline elemental content, evidenced in this work, are key features for the improvement of the moss bag approach and its large scale application. [Mh] Termos MeSH primário: Poluentes Atmosféricos/análise Bryopsida/fisiologia Monitoramento Ambiental/métodos Sphagnopsida/fisiologia [Mh] Termos MeSH secundário: Poluição do Ar/estatística & dados numéricos Briófitas Bryopsida/química Itália Mercúrio Metais/análise Espanha Sphagnopsida/química [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Air Pollutants); 0 (Metals); FXS1BY2PGL (Mercury) [Em] Mês de entrada: 1707 [Cu] Atualização por classe: 170728 [Lr] Data última revisão: 170728 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170307 [St] Status: MEDLINE

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