The current study describes the taxonomic and functional composition of metagenomic sequences obtained from a filamentous microbial mat isolated from the Comau fjord, located in the northernmost part of the Chilean Patagonia. The taxonomic composition of the microbial community showed a high proportion of members of the Gammaproteobacteria, including a high number of sequences that were recruited to the genomes of Moritella marina MP-1 and Colwellia psycherythraea 34H, suggesting the presence of populations related to...
Data from: Parallel proteomic and phosphoproteomic analyses of successive stages of maize leaf developmentMichelle R. Facette, Zhouxin Shen, Fjola R. Bjornsdotter, Steven P. Briggs & Laurie G. Smith
We carried out large-scale, quantitative analyses of the maize (Zea mays) leaf proteome and phosphoproteome at four developmental stages. Exploiting the developmental gradient of maize leaves, we analyzed protein and phosphoprotein abundance as maize leaves transition from proliferative cell division to differentiation to cell expansion, and compared these developing zones to one another and the mature leaf blade. Comparison of the proteomes and phosphoproteomes suggests a key role for post-translational regulation in developmental transitions. Analysis...
Data from: Geographic population structure of the African malaria vector Anopheles gambiae suggests a role for the forest-savannah biome transition as a barrier to gene flowJoao Pinto, Alexander Egyir-Yawson, José L. Vicente, Bruno Gomes, Federica Santalomazza, Marta Moreno, Jacques D. Charlwood, Frederic Simard, Nohal Elissa, David Weetman, Martin J. Donnelly, Adalgisa Caccone, Alessandra Della Torre, Caccone A, Simard F, Pinto J, Vicente JL, Gomes B, Elissa N, Weetman D & Donnelly MJ
The primary Afrotropical malaria mosquito vector Anopheles gambiae sensu stricto has a complex population structure. In western Africa, this species is split into two molecular forms and displays local and regional variation in chromosomal arrangements and behaviours. To investigate patterns of macro-geographic population substructure, 25 An. gambiae samples from 12 African countries were genotyped at 13 microsatellite loci. This analysis detected the presence of additional population structuring, with the M-form being subdivided into distinct west,...
Data from: Electrophoretic mobility confirms reassortment bias among geographic isolates of segmented RNA phagesSamuel L. Díaz-Muñoz, Olivier Tenaillon, Daniel Goldhill, Kristen Brao, Paul E. Turner & Lin Chao
Background: Sex presents evolutionary costs and benefits, leading to the expectation that the amount of genetic exchange should vary in conditions with contrasting cost-benefit equations. Like eukaryotes, viruses also engage in sex, but the rate of genetic exchange is often assumed to be a relatively invariant property of a particular virus. However, the rates of genetic exchange can vary within one type of virus according to geography, as highlighted by phylogeographic studies of cystoviruses. Here...
Data from: Species and hybrid identification of sturgeon caviar: a new molecular approach to detect illegal tradeElisa Boscari, Anna Barmintseva, Jose Martin Pujolar, P. Doukakis, Nikolai Mugue & Leonardo Congiu
Overexploitation of wild populations due to the high economic value of caviar has driven sturgeons to near extinction. The high prices commanded by caviar on world markets have made it a magnet for illegal and fraudulent caviar trade, often involving low-value farmed caviar being sold as top-quality caviar. We present a new molecular approach for the identification of pure sturgeon species and hybrids that are among the most commercialized species in Europe and North America....
Data from: The curious case of Hermodice carunculata (Annelida: Amphinomidae): evidence for genetic homogeneity throughout the Atlantic Ocean and adjacent basinsJoseph B. Ahrens, Elizabeth Borda, Rômulo Barroso, Paulo C. Paiva, Alexandra M. Campbell, Alexander Wolf, Maggy M. Nugues, Greg W. Rouse & Anja Schulze
Over the last few decades, advances in molecular techniques have led to the detection of strong geographic population structure and cryptic speciation in many benthic marine taxa, even those with long-lived pelagic larval stages. Polychaete annelids, in particular, generally show a high degree of population divergence, especially in mitochondrial genes. Rarely have molecular studies confirmed the presence of ‘cosmopolitan’ species. The amphinomid polychaete Hermodice carunculata was long considered the sole species within its genus, with...
Data from: Mitogenomic phylogenetics of fin whales (Balaenoptera physalus spp.): genetic evidence for revision of subspeciesFrederick I. Archer, Phillip A. Morin, Brittany L. Hancock-Hanser, Kelly M. Robertson, Matthew S. Leslie, Martine Bérubé, Simone Panigada & Barbara L. Taylor
There are three described subspecies of fin whales (Balaenoptera physalus): B. p. physalus Linnaeus, 1758 in the Northern Hemisphere, B. p. quoyi Fischer, 1829 in the Southern Hemisphere, and a recently described pygmy form, B. p. patachonica Burmeister, 1865. The discrete distribution in the North Pacific and North Atlantic raises the question of whether a single Northern Hemisphere subspecies is valid. We assess phylogenetic patterns using ~16 K base pairs of the complete mitogenome for...
Data from: Ecological novelty by hybridization: experimental evidence for increased thermal tolerance by transgressive segregation in Tigriopus californicusRicardo J. Pereira, Felipe Sousa Barreto & Ronald S. Burton
Early generations of hybrids can express both genetic incompatibilities and phenotypic novelty. Insights into whether these conflicting interactions between intrinsic and extrinsic selection persist after a few generations of recombination require experimental studies. To address this question, we use interpopulation crosses and recombinant inbred lines (RILs) of the copepod Tigriopus californicus, and focus on two traits that are relevant for the diversification of this species: survivorship during development and tolerance to thermal stress. Experimental crosses...
University of California, San Diego8
University of Padua1
Texas A&M University at Galveston1
University of Groningen1
Institut de Recherche pour le Développement1
Leibniz Center for Tropical Marine Ecology1
Texas A&M University1
Southwest Fisheries Science Center1