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Registros recuperados: 7
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Analysis of 16S rRNA and mxaF genes reveling insights into Methylobacterium niche-specific plant association Genet. Mol. Biol.
Dourado,Manuella Nóbrega; Andreote,Fernando Dini; Dini-Andreote,Francisco; Conti,Raphael; Araújo,Janete Magali; Araújo,Welington Luiz.
The genus Methylobacterium comprises pink-pigmented facultative methylotrophic (PPFM) bacteria, known to be an important plant-associated bacterial group. Species of this group, described as plant-nodulating, have the dual capacity of producing cytokinin and enzymes, such as pectinase and cellulase, involved in systemic resistance induction and nitrogen fixation under specific plant environmental conditions. The aim hereby was to evaluate the phylogenetic distribution of Methylobacterium spp. isolates from different host plants. Thus, a comparative analysis between sequences from structural (16S rRNA) and functional mxaF (which codifies for a subunit of the enzyme methanol dehydrogenase) ubiquitous genes, was undertaken. Notably, some Methylobacterium spp....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phylogenetic diversity; Methylotrofics; PPFM; Plant-bacteria interaction.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000100020
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FishMed: traits, phylogeny, current and projected species distribution of Mediterranean fishes, and environmental data ArchiMer
Albouy, Camille; Lasram, Frida Ben Rais; Velez, Laure; Guilhaumon, François; Meynard, Christine N.; Boyer, Séverine; Benestan, Laura; Mouquet, Nicolas; Douzery, Emmanuel; Aznar, Roland; Troussellier, Marc; Somot, Samuel; Leprieur, Fabien; Le Loc'H, François; Mouillot, David.
The FishMed database provides traits, phylogeny, current and projected species distribution of Mediterranean fishes, and associated sea surface temperature (SST) from the regional oceanic model NEMOMED8. Data for the current geographical distributions of 635 Mediterranean fish species were compiled from a published expert knowledge atlas of fishes of the northern Atlantic and the Mediterranean (FNAM) edited between 1984 and 1986 and from an updated exotic fish species list. Two future sets of projected species distributions were obtained for the middle and end of the 21st century by using an ensemble forecasting approach for 288 coastal Mediterranean fish species based on SST according to the IPPC/SRES A2 scenario implemented with the Mediterranean...
Tipo: Text Palavras-chave: Climate change; Coastal fishes; Functional diversity; Mediterranean fish species; Mediterranean Sea; NEMOMED8; Phylogenetic diversity; Species distribution models; Taxonomic diversity.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00371/48216/48341.pdf
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High diversity of skin-associated bacterial communities of marine fishes is promoted by their high variability among body parts, individuals and species ArchiMer
Chiarello, Marlene; Villeger, Sebastien; Bouvier, Corinne; Bettarel, Yvan; Bouvier, Thierry.
Animal-associated microbiotas form complex communities, which are suspected to play crucial functions for their host fitness. However, the biodiversity of these communities, including their differences between host species and individuals, has been scarcely studied, especially in case of skin-associated communities. In addition, the intraindividual variability (i.e. between body parts) has never been assessed to date. The objective of this study was to characterize skin bacterial communities of two teleostean fish species, namely the European seabass (Dicentrarchus labrax) and gilthead seabream (Sparus aurata), using a high-throughput DNA sequencing method. In order to focus on intrinsic factors of host-associated bacterial community variability,...
Tipo: Text Palavras-chave: Sparus aurata; Dicentrarchus labrax; Skin microbiome; Next generation sequencing; Phylogenetic diversity.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00277/38801/37547.pdf
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Mammalian phylogenetic diversity-area relationships at a continental scale ArchiMer
Mazel, Florent; Renaud, Julien; Guilhaumon, Francois; Mouillot, David; Gravel, Dominique; Thuiller, Wilfried.
In analogy to the species-area relationship (SAR), one of the few laws in ecology, the phylogenetic diversity-area relationship (PDAR) describes the tendency of phylogenetic diversity (PD) to increase with area. Although investigating PDAR has the potential to unravel the underlying processes shaping assemblages across spatial scales and to predict PD loss through habitat reduction, it has been little investigated so far. Focusing on PD has noticeable advantages compared to species richness (SR), since PD also gives insights on processes such as speciation/extinction, assembly rules and ecosystem functioning. Here we investigate the universality and pervasiveness of the PDAR at continental scale using terrestrial mammals as study case. We define the...
Tipo: Text Palavras-chave: Conservation biogeography; Habitat loss; Null models; Phylogenetic diversity; Species-area relationship; Strict nested design.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00610/72248/71049.pdf
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Multifaceted biodiversity hotspots of marine mammals for conservation priorities ArchiMer
Albouy, Camille; Delattre, Valentine L.; Merigot, Bastien; Meynard, Christine N.; Leprieur, Fabien.
Aim Identifying the multifaceted biodiversity hotspots for marine mammals and their spatial overlap with human threats at the global scale. Location World-wide. Methods We compiled a functional trait database for 121 species of marine mammals characterized by 14 functional traits grouped into five categories. We estimated marine mammal species richness (SR) as well as functional (FD) and phylogenetic diversity (PD) per grid cell (1° × 1°) using the FRic index (a measure of trait diversity as the volume of functional space occupied by the species present in an assemblage) and the PD index (the amount of evolutionary history represented by a set of species), respectively. Finally, we assessed the spatial congruence of these three facets of biodiversity...
Tipo: Text Palavras-chave: Conservation; Functional diversity; Marine mammals; Phylogenetic diversity.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00385/49662/51084.pdf
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Patterns of composition, richness and phylogenetic diversity of woody plant communities of Quillaja saponaria Molina (Quillajaceae) in the Chilean sclerophyllous forest Gayana Botánica
Letelier,Luis; Valderrama,Aly; Stoll,Alexandra; García-Gonzáles,Rolando; González-Rodríguez,Antonio.
ABSTRACT Sclerophyllous forest is among the most representative types of woody plant communities in central Chile where Quillaja saponaria is considered to be one of the most important species. In this study, we analysed the main factors that explain the geographical patterns of variation in composition, richness and phylogenetic diversity of woody plant communities in the Chilean sclerophyllous forest where Quillaja saponaria is present. Vegetation surveys were performed for trees and shrubs in thirty-nine sites from 30° to 38° of latitude South in the Mediterranean biome of Chile. Composition, richness, alfa diversity and phylogenetic diversity metrics of the communities were calculated and associated with spatial (latitude, longitude and altitude),...
Tipo: Journal article Palavras-chave: Diversity; Forest fragmentation; Mediterranean flora; Phylogenetic diversity; Vegetation matrix.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432017000100057
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Phylogenetic structure is determined by patch size in rock outcrop vegetation on an inselberg in the northern Amazon region Acta Amazonica
VILLA,Pedro Manuel; GASTAUER,Markus; MARTINS,Sebastião Venâncio; CARRIÓN,Juan Fernando; CAMPOS,Prímula Viana; RODRIGUES,Alice Cristina; HERINGER,Gustavo; MEIRA-NETO,João Augusto Alves.
ABSTRACT Although inselbergs from around the world are iconic ecosystems, little is known on the underlying mechanisms of community assembly, especially in their characteristic patchy outcrop vegetation. Environmental constraints are expected to cause phylogenetic clustering when ecological niches are conserved within evolutionary lineages. We tested whether vegetation patches from rock outcrops of the Piedra La Tortuga Natural Monument, in the northern Amazon region, are phylogenetically clustered, indicating that environmental filtering is the dominant driver of community assemblage therein. We classified all patches according to their size as very small (< 1 m2), small (1-4 m2), medium-sized (4-8 m2), and large patches (8-15 m2). From each class, we...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental filtering; Phylogenetic turnover; Phylogenetic clustering; Phylogenetic diversity.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000300248
Registros recuperados: 7
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