Cantarel BL

References (4)

Title : Bacteria from diverse habitats colonize and compete in the mouse gut - Seedorf_2014_Cell_159_253
Author(s) : Seedorf H , Griffin NW , Ridaura VK , Reyes A , Cheng J , Rey FE , Smith MI , Simon GM , Scheffrahn RH , Woebken D , Spormann AM , Van Treuren W , Ursell LK , Pirrung M , Robbins-Pianka A , Cantarel BL , Lombard V , Henrissat B , Knight R , Gordon JI
Ref : Cell , 159 :253 , 2014
Abstract : To study how microbes establish themselves in a mammalian gut environment, we colonized germ-free mice with microbial communities from human, zebrafish, and termite guts, human skin and tongue, soil, and estuarine microbial mats. Bacteria from these foreign environments colonized and persisted in the mouse gut; their capacity to metabolize dietary and host carbohydrates and bile acids correlated with colonization success. Cohousing mice harboring these xenomicrobiota or a mouse cecal microbiota, along with germ-free "bystanders," revealed the success of particular bacterial taxa in invading guts with established communities and empty gut habitats. Unanticipated patterns of ecological succession were observed; for example, a soil-derived bacterium dominated even in the presence of bacteria from other gut communities (zebrafish and termite), and human-derived bacteria colonized germ-free bystander mice before mouse-derived organisms. This approach can be generalized to address a variety of mechanistic questions about succession, including succession in the context of microbiota-directed therapeutics.
ESTHER : Seedorf_2014_Cell_159_253
PubMedSearch : Seedorf_2014_Cell_159_253
PubMedID: 25284151
Gene_locus related to this paper: 9firm-a0a0j1g143

Title : Obligate biotrophy features unraveled by the genomic analysis of rust fungi - Duplessis_2011_Proc.Natl.Acad.Sci.U.S.A_108_9166
Author(s) : Duplessis S , Cuomo CA , Lin YC , Aerts A , Tisserant E , Veneault-Fourrey C , Joly DL , Hacquard S , Amselem J , Cantarel BL , Chiu R , Coutinho PM , Feau N , Field M , Frey P , Gelhaye E , Goldberg J , Grabherr MG , Kodira CD , Kohler A , Kues U , Lindquist EA , Lucas SM , Mago R , Mauceli E , Morin E , Murat C , Pangilinan JL , Park R , Pearson M , Quesneville H , Rouhier N , Sakthikumar S , Salamov AA , Schmutz J , Selles B , Shapiro H , Tanguay P , Tuskan GA , Henrissat B , Van de Peer Y , Rouze P , Ellis JG , Dodds PN , Schein JE , Zhong S , Hamelin RC , Grigoriev IV , Szabo LJ , Martin F
Ref : Proc Natl Acad Sci U S A , 108 :9166 , 2011
Abstract : Rust fungi are some of the most devastating pathogens of crop plants. They are obligate biotrophs, which extract nutrients only from living plant tissues and cannot grow apart from their hosts. Their lifestyle has slowed the dissection of molecular mechanisms underlying host invasion and avoidance or suppression of plant innate immunity. We sequenced the 101-Mb genome of Melampsora larici-populina, the causal agent of poplar leaf rust, and the 89-Mb genome of Puccinia graminis f. sp. tritici, the causal agent of wheat and barley stem rust. We then compared the 16,399 predicted proteins of M. larici-populina with the 17,773 predicted proteins of P. graminis f. sp tritici. Genomic features related to their obligate biotrophic lifestyle include expanded lineage-specific gene families, a large repertoire of effector-like small secreted proteins, impaired nitrogen and sulfur assimilation pathways, and expanded families of amino acid and oligopeptide membrane transporters. The dramatic up-regulation of transcripts coding for small secreted proteins, secreted hydrolytic enzymes, and transporters in planta suggests that they play a role in host infection and nutrient acquisition. Some of these genomic hallmarks are mirrored in the genomes of other microbial eukaryotes that have independently evolved to infect plants, indicating convergent adaptation to a biotrophic existence inside plant cells.
ESTHER : Duplessis_2011_Proc.Natl.Acad.Sci.U.S.A_108_9166
PubMedSearch : Duplessis_2011_Proc.Natl.Acad.Sci.U.S.A_108_9166
PubMedID: 21536894
Gene_locus related to this paper: pucgt-e3k840 , pucgt-e3kaq6 , pucgt-e3kw59 , pucgt-e3kz16 , pucgt-e3l9v6 , pucgt-e3l279 , pucgt-h6qt25 , mellp-f4reh4 , mellp-f4rhc8 , mellp-f4reh2 , mellp-f4r3y0 , mellp-f4rz15 , mellp-f4rz64 , mellp-f4rl14 , mellp-f4rz66 , mellp-f4s751 , mellp-f4s2g6 , pucgt-e3l1z7 , pucgt-e3l803 , pucgt-e3kst2 , pucgt-e3kst5 , mellp-f4ru03 , pucgt-e3l1z8 , pucgt-e3ktz7 , pucgt-e3jun4 , mellp-f4rl65 , mellp-f4rz16 , mellp-f4ru02 , mellp-f4sav4 , mellp-f4sav3 , mellp-f4s1j0 , mellp-f4rkp0 , mellp-f4s483 , pucgt-e3kzu5 , pucgt-h6qtq8 , mellp-f4r5l5 , pucgt-e3krw7 , pucgt-e3l7w5 , pucgt-e3k2w6 , pucgt-e3kfg2 , pucgt-kex1

Title : Functional metagenomics to mine the human gut microbiome for dietary fiber catabolic enzymes - Tasse_2010_Genome.Res_20_1605
Author(s) : Tasse L , Bercovici J , Pizzut-Serin S , Robe P , Tap J , Klopp C , Cantarel BL , Coutinho PM , Henrissat B , Leclerc M , Dore J , Monsan P , Remaud-Simeon M , Potocki-Veronese G
Ref : Genome Res , 20 :1605 , 2010
Abstract : The human gut microbiome is a complex ecosystem composed mainly of uncultured bacteria. It plays an essential role in the catabolism of dietary fibers, the part of plant material in our diet that is not metabolized in the upper digestive tract, because the human genome does not encode adequate carbohydrate active enzymes (CAZymes). We describe a multi-step functionally based approach to guide the in-depth pyrosequencing of specific regions of the human gut metagenome encoding the CAZymes involved in dietary fiber breakdown. High-throughput functional screens were first applied to a library covering 5.4 10(9) bp of metagenomic DNA, allowing the isolation of 310 clones showing beta-glucanase, hemicellulase, galactanase, amylase, or pectinase activities. Based on the results of refined secondary screens, sequencing efforts were reduced to 0.84 Mb of nonredundant metagenomic DNA, corresponding to 26 clones that were particularly efficient for the degradation of raw plant polysaccharides. Seventy-three CAZymes from 35 different families were discovered. This corresponds to a fivefold target-gene enrichment compared to random sequencing of the human gut metagenome. Thirty-three of these CAZy encoding genes are highly homologous to prevalent genes found in the gut microbiome of at least 20 individuals for whose metagenomic data are available. Moreover, 18 multigenic clusters encoding complementary enzyme activities for plant cell wall degradation were also identified. Gene taxonomic assignment is consistent with horizontal gene transfer events in dominant gut species and provides new insights into the human gut functional trophic chain.
ESTHER : Tasse_2010_Genome.Res_20_1605
PubMedSearch : Tasse_2010_Genome.Res_20_1605
PubMedID: 20841432
Gene_locus related to this paper: bactn-BT2525 , bacun-a7uyk8

Title : Characterizing a model human gut microbiota composed of members of its two dominant bacterial phyla - Mahowald_2009_Proc.Natl.Acad.Sci.U.S.A_106_5859
Author(s) : Mahowald MA , Rey FE , Seedorf H , Turnbaugh PJ , Fulton RS , Wollam A , Shah N , Wang C , Magrini V , Wilson RK , Cantarel BL , Coutinho PM , Henrissat B , Crock LW , Russell A , VerBerkmoes NC , Hettich RL , Gordon JI
Ref : Proc Natl Acad Sci U S A , 106 :5859 , 2009
Abstract : The adult human distal gut microbial community is typically dominated by 2 bacterial phyla (divisions), the Firmicutes and the Bacteroidetes. Little is known about the factors that govern the interactions between their members. Here, we examine the niches of representatives of both phyla in vivo. Finished genome sequences were generated from Eubacterium rectale and E. eligens, which belong to Clostridium Cluster XIVa, one of the most common gut Firmicute clades. Comparison of these and 25 other gut Firmicutes and Bacteroidetes indicated that the Firmicutes possess smaller genomes and a disproportionately smaller number of glycan-degrading enzymes. Germ-free mice were then colonized with E. rectale and/or a prominent human gut Bacteroidetes, Bacteroides thetaiotaomicron, followed by whole-genome transcriptional profiling, high-resolution proteomic analysis, and biochemical assays of microbial-microbial and microbial-host interactions. B. thetaiotaomicron adapts to E. rectale by up-regulating expression of a variety of polysaccharide utilization loci encoding numerous glycoside hydrolases, and by signaling the host to produce mucosal glycans that it, but not E. rectale, can access. E. rectale adapts to B. thetaiotaomicron by decreasing production of its glycan-degrading enzymes, increasing expression of selected amino acid and sugar transporters, and facilitating glycolysis by reducing levels of NADH, in part via generation of butyrate from acetate, which in turn is used by the gut epithelium. This simplified model of the human gut microbiota illustrates niche specialization and functional redundancy within members of its major bacterial phyla, and the importance of host glycans as a nutrient foundation that ensures ecosystem stability.
ESTHER : Mahowald_2009_Proc.Natl.Acad.Sci.U.S.A_106_5859
PubMedSearch : Mahowald_2009_Proc.Natl.Acad.Sci.U.S.A_106_5859
PubMedID: 19321416
Gene_locus related to this paper: eube2-c4z2j4 , eube2-c4z5d5 , eube2-c4z6k4 , eube2-c4z179 , eube2-c4z180 , eubr3-c4z8a6 , eubr3-c4zfm2 , eubr3-c4zhp3 , eubr3-c4zf28