Search

Your search keyword '"Mathew, Tittu"' showing total 23 results
Start Over Author "Mathew, Tittu"
23 results on '"Mathew, Tittu"'

1. Adaptive Importance Sampling based Neural Network framework for Reliability and Sensitivity Prediction for Variable Stiffness Composite Laminates with hybrid uncertainties

Author

Mathew, Tittu Varghese, Prajith, P, Ruiz, RO, Atroshchenko, E, and Natarajan, S

Subjects
Mathematics - Numerical Analysis
Abstract

In this work, we propose to leverage the advantages of both the Artificial Neural Network (ANN) based Second Order Reliability Method (SORM) and Importance sampling to yield an Adaptive Importance Sampling based ANN, with specific application towards failure probability and sensitivity estimates of Variable Stiffness Composite Laminate (VSCL) plates, in the presence of multiple independent geometric and material uncertainties. The performance function for the case studies is defined based on the fundamental frequency of the VSCL plate. The accuracy in both the reliability estimates and sensitivity studies using the proposed method were found to be in close agreement with that obtained using the ANN based brute-force MCS method, with a significant computational savings of 95\%. Moreover, the importance of taking into account the randomness in ply thickness for failure probability estimates is also highlighted quantitatively under the sensitivity studies section.

Published
2020
Full Text
View/download PDF

2. Size effects in elastic-plastic functionally graded materials

Author

Mathew, Tittu V., Natarajan, Sundararajan, and Martínez-Pañeda, Emilio

Subjects
Condensed Matter - Materials Science
Abstract

We develop a strain gradient plasticity formulation for composite materials with spatially varying volume fractions to characterize size effects in functionally graded materials (FGMs). The model is grounded on the mechanism-based strain gradient plasticity theory and effective properties are determined by means of a linear homogenization scheme. Several paradigmatic boundary value problems are numerically investigated to gain insight into the strengthening effects associated with plastic strain gradients and geometrically necessary dislocations (GNDs). The analysis of bending in micro-size functionally graded foils shows a notably stiffer response with diminishing thickness. Micro-hardness measurements from indentation reveal a significant increase with decreasing indenter size. And large dislocation densities in the vicinity of the crack substantially elevate stresses in cracked FGM components. We comprehensively assess the influence of the length scale parameter and material gradation profile to accurately characterize the micro-scale response and identify regimes of GNDs relevance in FGMs., Comment: Composite Structures (2018)

Published
2018
Full Text
View/download PDF

5. Multifaceted biological insights from a draft genome sequence of the tobacco hornworm moth, Manduca sexta

Author

Kanost, Michael R, Arrese, Estela L, Cao, Xiaolong, Chen, Yun-Ru, Chellapilla, Sanjay, Goldsmith, Marian R, Grosse-Wilde, Ewald, Heckel, David G, Herndon, Nicolae, Jiang, Haobo, Papanicolaou, Alexie, Qu, Jiaxin, Soulages, Jose L, Vogel, Heiko, Walters, James, Waterhouse, Robert M, Ahn, Seung-Joon, Almeida, Francisca C, An, Chunju, Aqrawi, Peshtewani, Bretschneider, Anne, Bryant, William B, Bucks, Sascha, Chao, Hsu, Chevignon, Germain, Christen, Jayne M, Clarke, David F, Dittmer, Neal T, Ferguson, Laura CF, Garavelou, Spyridoula, Gordon, Karl HJ, Gunaratna, Ramesh T, Han, Yi, Hauser, Frank, He, Yan, Heidel-Fischer, Hanna, Hirsh, Ariana, Hu, Yingxia, Jiang, Hongbo, Kalra, Divya, Klinner, Christian, König, Christopher, Kovar, Christie, Kroll, Ashley R, Kuwar, Suyog S, Lee, Sandy L, Lehman, Rüdiger, Li, Kai, Li, Zhaofei, Liang, Hanquan, Lovelace, Shanna, Lu, Zhiqiang, Mansfield, Jennifer H, McCulloch, Kyle J, Mathew, Tittu, Morton, Brian, Muzny, Donna M, Neunemann, David, Ongeri, Fiona, Pauchet, Yannick, Pu, Ling-Ling, Pyrousis, Ioannis, Rao, Xiang-Jun, Redding, Amanda, Roesel, Charles, Sanchez-Gracia, Alejandro, Schaack, Sarah, Shukla, Aditi, Tetreau, Guillaume, Wang, Yang, Xiong, Guang-Hua, Traut, Walther, Walsh, Tom K, Worley, Kim C, Wu, Di, Wu, Wenbi, Wu, Yuan-Qing, Zhang, Xiufeng, Zou, Zhen, Zucker, Hannah, Briscoe, Adriana D, Burmester, Thorsten, Clem, Rollie J, Feyereisen, René, Grimmelikhuijzen, Cornelis JP, Hamodrakas, Stavros J, Hansson, Bill S, Huguet, Elisabeth, Jermiin, Lars S, Lan, Que, Lehman, Herman K, Lorenzen, Marce, Merzendorfer, Hans, Michalopoulos, Ioannis, Morton, David B, Muthukrishnan, Subbaratnam, Oakeshott, John G, Palmer, Will, Park, Yoonseong, and Passarelli, A Lorena

Subjects
Biological Sciences, Bioinformatics and Computational Biology, Genetics, Tobacco, 1.1 Normal biological development and functioning, Underpinning research, Generic health relevance, Animals, Gene Expression, Gene Expression Profiling, Genome, Insect, Larva, Manduca, Pupa, Sequence Analysis, DNA, Synteny, Lepidoptera, Insect, Tobacco hornworm, Moth, Insect biochemistry, Innate immunity, Medicinal and Biomolecular Chemistry, Biochemistry and Cell Biology, Zoology, Entomology, Biochemistry and cell biology
Abstract

Manduca sexta, known as the tobacco hornworm or Carolina sphinx moth, is a lepidopteran insect that is used extensively as a model system for research in insect biochemistry, physiology, neurobiology, development, and immunity. One important benefit of this species as an experimental model is its extremely large size, reaching more than 10 g in the larval stage. M. sexta larvae feed on solanaceous plants and thus must tolerate a substantial challenge from plant allelochemicals, including nicotine. We report the sequence and annotation of the M. sexta genome, and a survey of gene expression in various tissues and developmental stages. The Msex_1.0 genome assembly resulted in a total genome size of 419.4 Mbp. Repetitive sequences accounted for 25.8% of the assembled genome. The official gene set is comprised of 15,451 protein-coding genes, of which 2498 were manually curated. Extensive RNA-seq data from many tissues and developmental stages were used to improve gene models and for insights into gene expression patterns. Genome wide synteny analysis indicated a high level of macrosynteny in the Lepidoptera. Annotation and analyses were carried out for gene families involved in a wide spectrum of biological processes, including apoptosis, vacuole sorting, growth and development, structures of exoskeleton, egg shells, and muscle, vision, chemosensation, ion channels, signal transduction, neuropeptide signaling, neurotransmitter synthesis and transport, nicotine tolerance, lipid metabolism, and immunity. This genome sequence, annotation, and analysis provide an important new resource from a well-studied model insect species and will facilitate further biochemical and mechanistic experimental studies of many biological systems in insects.

Published
2016

6. Comparative validation of the D. melanogaster modENCODE transcriptome annotation

Author

Chen, Zhen-Xia, Sturgill, David, Qu, Jiaxin, Jiang, Huaiyang, Park, Soo, Boley, Nathan, Suzuki, Ana Maria, Fletcher, Anthony R, Plachetzki, David C, FitzGerald, Peter C, Artieri, Carlo G, Atallah, Joel, Barmina, Olga, Brown, James B, Blankenburg, Kerstin P, Clough, Emily, Dasgupta, Abhijit, Gubbala, Sai, Han, Yi, Jayaseelan, Joy C, Kalra, Divya, Kim, Yoo-Ah, Kovar, Christie L, Lee, Sandra L, Li, Mingmei, Malley, James D, Malone, John H, Mathew, Tittu, Mattiuzzo, Nicolas R, Munidasa, Mala, Muzny, Donna M, Ongeri, Fiona, Perales, Lora, Przytycka, Teresa M, Pu, Ling-Ling, Robinson, Garrett, Thornton, Rebecca L, Saada, Nehad, Scherer, Steven E, Smith, Harold E, Vinson, Charles, Warner, Crystal B, Worley, Kim C, Wu, Yuan-Qing, Zou, Xiaoyan, Cherbas, Peter, Kellis, Manolis, Eisen, Michael B, Piano, Fabio, Kionte, Karin, Fitch, David H, Sternberg, Paul W, Cutter, Asher D, Duff, Michael O, Hoskins, Roger A, Graveley, Brenton R, Gibbs, Richard A, Bickel, Peter J, Kopp, Artyom, Carninci, Piero, Celniker, Susan E, Oliver, Brian, and Richards, Stephen

Subjects
Biological Sciences, Bioinformatics and Computational Biology, Genetics, Human Genome, Biotechnology, Generic health relevance, Animals, Cluster Analysis, Computational Biology, Drosophila melanogaster, Evolution, Molecular, Exons, Female, Gene Expression Profiling, Genome, Insect, Humans, Male, Molecular Sequence Annotation, Nucleotide Motifs, Phylogeny, Position-Specific Scoring Matrices, Promoter Regions, Genetic, RNA Editing, RNA Splice Sites, RNA Splicing, Reproducibility of Results, Transcription Initiation Site, Transcriptome, Medical and Health Sciences, Bioinformatics
Abstract

Accurate gene model annotation of reference genomes is critical for making them useful. The modENCODE project has improved the D. melanogaster genome annotation by using deep and diverse high-throughput data. Since transcriptional activity that has been evolutionarily conserved is likely to have an advantageous function, we have performed large-scale interspecific comparisons to increase confidence in predicted annotations. To support comparative genomics, we filled in divergence gaps in the Drosophila phylogeny by generating draft genomes for eight new species. For comparative transcriptome analysis, we generated mRNA expression profiles on 81 samples from multiple tissues and developmental stages of 15 Drosophila species, and we performed cap analysis of gene expression in D. melanogaster and D. pseudoobscura. We also describe conservation of four distinct core promoter structures composed of combinations of elements at three positions. Overall, each type of genomic feature shows a characteristic divergence rate relative to neutral models, highlighting the value of multispecies alignment in annotating a target genome that should prove useful in the annotation of other high priority genomes, especially human and other mammalian genomes that are rich in noncoding sequences. We report that the vast majority of elements in the annotation are evolutionarily conserved, indicating that the annotation will be an important springboard for functional genetic testing by the Drosophila community.

Published
2014

7. The First Myriapod Genome Sequence Reveals Conservative Arthropod Gene Content and Genome Organisation in the Centipede Strigamia maritima

Author

Chipman, Ariel D, Ferrier, David EK, Brena, Carlo, Qu, Jiaxin, Hughes, Daniel ST, Schröder, Reinhard, Torres-Oliva, Montserrat, Znassi, Nadia, Jiang, Huaiyang, Almeida, Francisca C, Alonso, Claudio R, Apostolou, Zivkos, Aqrawi, Peshtewani, Arthur, Wallace, Barna, Jennifer CJ, Blankenburg, Kerstin P, Brites, Daniela, Capella-Gutiérrez, Salvador, Coyle, Marcus, Dearden, Peter K, Du Pasquier, Louis, Duncan, Elizabeth J, Ebert, Dieter, Eibner, Cornelius, Erikson, Galina, Evans, Peter D, Extavour, Cassandra G, Francisco, Liezl, Gabaldón, Toni, Gillis, William J, Goodwin-Horn, Elizabeth A, Green, Jack E, Griffiths-Jones, Sam, Grimmelikhuijzen, Cornelis JP, Gubbala, Sai, Guigó, Roderic, Han, Yi, Hauser, Frank, Havlak, Paul, Hayden, Luke, Helbing, Sophie, Holder, Michael, Hui, Jerome HL, Hunn, Julia P, Hunnekuhl, Vera S, Jackson, LaRonda, Javaid, Mehwish, Jhangiani, Shalini N, Jiggins, Francis M, Jones, Tamsin E, Kaiser, Tobias S, Kalra, Divya, Kenny, Nathan J, Korchina, Viktoriya, Kovar, Christie L, Kraus, F Bernhard, Lapraz, François, Lee, Sandra L, Lv, Jie, Mandapat, Christigale, Manning, Gerard, Mariotti, Marco, Mata, Robert, Mathew, Tittu, Neumann, Tobias, Newsham, Irene, Ngo, Dinh N, Ninova, Maria, Okwuonu, Geoffrey, Ongeri, Fiona, Palmer, William J, Patil, Shobha, Patraquim, Pedro, Pham, Christopher, Pu, Ling-Ling, Putman, Nicholas H, Rabouille, Catherine, Ramos, Olivia Mendivil, Rhodes, Adelaide C, Robertson, Helen E, Robertson, Hugh M, Ronshaugen, Matthew, Rozas, Julio, Saada, Nehad, Sánchez-Gracia, Alejandro, Scherer, Steven E, Schurko, Andrew M, Siggens, Kenneth W, Simmons, DeNard, Stief, Anna, Stolle, Eckart, Telford, Maximilian J, Tessmar-Raible, Kristin, Thornton, Rebecca, van der Zee, Maurijn, von Haeseler, Arndt, Williams, James M, Willis, Judith H, Wu, Yuanqing, and Zou, Xiaoyan

Subjects
Biological Sciences, Bioinformatics and Computational Biology, Genetics, Human Genome, Biotechnology, Prevention, 1.1 Normal biological development and functioning, Underpinning research, Generic health relevance, Animals, Arthropods, Circadian Rhythm Signaling Peptides and Proteins, DNA Methylation, Evolution, Molecular, Female, Genome, Genome, Mitochondrial, Hormones, Male, Multigene Family, Phylogeny, Polymorphism, Genetic, Protein Kinases, RNA, Untranslated, Receptors, Odorant, Selenoproteins, Sex Chromosomes, Synteny, Transcription Factors, Agricultural and Veterinary Sciences, Medical and Health Sciences, Developmental Biology, Agricultural, veterinary and food sciences, Biological sciences, Biomedical and clinical sciences
Abstract

Myriapods (e.g., centipedes and millipedes) display a simple homonomous body plan relative to other arthropods. All members of the class are terrestrial, but they attained terrestriality independently of insects. Myriapoda is the only arthropod class not represented by a sequenced genome. We present an analysis of the genome of the centipede Strigamia maritima. It retains a compact genome that has undergone less gene loss and shuffling than previously sequenced arthropods, and many orthologues of genes conserved from the bilaterian ancestor that have been lost in insects. Our analysis locates many genes in conserved macro-synteny contexts, and many small-scale examples of gene clustering. We describe several examples where S. maritima shows different solutions from insects to similar problems. The insect olfactory receptor gene family is absent from S. maritima, and olfaction in air is likely effected by expansion of other receptor gene families. For some genes S. maritima has evolved paralogues to generate coding sequence diversity, where insects use alternate splicing. This is most striking for the Dscam gene, which in Drosophila generates more than 100,000 alternate splice forms, but in S. maritima is encoded by over 100 paralogues. We see an intriguing linkage between the absence of any known photosensory proteins in a blind organism and the additional absence of canonical circadian clock genes. The phylogenetic position of myriapods allows us to identify where in arthropod phylogeny several particular molecular mechanisms and traits emerged. For example, we conclude that juvenile hormone signalling evolved with the emergence of the exoskeleton in the arthropods and that RR-1 containing cuticle proteins evolved in the lineage leading to Mandibulata. We also identify when various gene expansions and losses occurred. The genome of S. maritima offers us a unique glimpse into the ancestral arthropod genome, while also displaying many adaptations to its specific life history.

Published
2014

8. Butterfly genome reveals promiscuous exchange of mimicry adaptations among species

Author

Dasmahapatra, Kanchon K, Walters, James R, Briscoe, Adriana D, Davey, John W, Whibley, Annabel, Nadeau, Nicola J, Zimin, Aleksey V, Hughes, Daniel ST, Ferguson, Laura C, Martin, Simon H, Salazar, Camilo, Lewis, James J, Adler, Sebastian, Ahn, Seung-Joon, Baker, Dean A, Baxter, Simon W, Chamberlain, Nicola L, Chauhan, Ritika, Counterman, Brian A, Dalmay, Tamas, Gilbert, Lawrence E, Gordon, Karl, Heckel, David G, Hines, Heather M, Hoff, Katharina J, Holland, Peter WH, Jacquin-Joly, Emmanuelle, Jiggins, Francis M, Jones, Robert T, Kapan, Durrell D, Kersey, Paul, Lamas, Gerardo, Lawson, Daniel, Mapleson, Daniel, Maroja, Luana S, Martin, Arnaud, Moxon, Simon, Palmer, William J, Papa, Riccardo, Papanicolaou, Alexie, Pauchet, Yannick, Ray, David A, Rosser, Neil, Salzberg, Steven L, Supple, Megan A, Surridge, Alison, Tenger-Trolander, Ayse, Vogel, Heiko, Wilkinson, Paul A, Wilson, Derek, Yorke, James A, Yuan, Furong, Balmuth, Alexi L, Eland, Cathlene, Gharbi, Karim, Thomson, Marian, Gibbs, Richard A, Han, Yi, Jayaseelan, Joy C, Kovar, Christie, Mathew, Tittu, Muzny, Donna M, Ongeri, Fiona, Pu, Ling-Ling, Qu, Jiaxin, Thornton, Rebecca L, Worley, Kim C, Wu, Yuan-Qing, Linares, Mauricio, Blaxter, Mark L, Ffrench-Constant, Richard H, Joron, Mathieu, Kronforst, Marcus R, Mullen, Sean P, Reed, Robert D, Scherer, Steven E, Richards, Stephen, Mallet, James, McMillan, W Owen, and Jiggins, Chris D

Subjects
Adaptation, Physiological, Animals, Bombyx, Butterflies, Chromosomes, Insect, Evolution, Molecular, Gene Flow, Genes, Homeobox, Genes, Insect, Genome, Insect, Genomics, Hybridization, Genetic, Molecular Mimicry, Molecular Sequence Data, Phylogeny, Pigmentation, Sequence Analysis, DNA, Species Specificity, Synteny, Wings, Animal, Heliconius Genome Consortium, General Science & Technology
Abstract

The evolutionary importance of hybridization and introgression has long been debated. Hybrids are usually rare and unfit, but even infrequent hybridization can aid adaptation by transferring beneficial traits between species. Here we use genomic tools to investigate introgression in Heliconius, a rapidly radiating genus of neotropical butterflies widely used in studies of ecology, behaviour, mimicry and speciation. We sequenced the genome of Heliconius melpomene and compared it with other taxa to investigate chromosomal evolution in Lepidoptera and gene flow among multiple Heliconius species and races. Among 12,669 predicted genes, biologically important expansions of families of chemosensory and Hox genes are particularly noteworthy. Chromosomal organization has remained broadly conserved since the Cretaceous period, when butterflies split from the Bombyx (silkmoth) lineage. Using genomic resequencing, we show hybrid exchange of genes between three co-mimics, Heliconius melpomene, Heliconius timareta and Heliconius elevatus, especially at two genomic regions that control mimicry pattern. We infer that closely related Heliconius species exchange protective colour-pattern genes promiscuously, implying that hybridization has an important role in adaptive radiation.

Published
2012

9. Multifaceted biological insights from a draft genome sequence of the tobacco hornworm moth, Manduca sexta

Author

Kanost, Michael R., Arrese, Estela L., Cao, Xiaolong, Chen, Yun-Ru, Chellapilla, Sanjay, Goldsmith, Marian R., Grosse-Wilde, Ewald, Heckel, David G., Herndon, Nicolae, Jiang, Haobo, Papanicolaou, Alexie, Qu, Jiaxin, Soulages, Jose L., Vogel, Heiko, Walters, James, Waterhouse, Robert M., Ahn, Seung-Joon, Almeida, Francisca C., An, Chunju, Aqrawi, Peshtewani, Bretschneider, Anne, Bryant, William B., Bucks, Sascha, Chao, Hsu, Chevignon, Germain, Christen, Jayne M., Clarke, David F., Dittmer, Neal T., Ferguson, Laura C.F., Garavelou, Spyridoula, Gordon, Karl H.J., Gunaratna, Ramesh T., Han, Yi, Hauser, Frank, He, Yan, Heidel-Fischer, Hanna, Hirsh, Ariana, Hu, Yingxia, Jiang, Hongbo, Kalra, Divya, Klinner, Christian, König, Christopher, Kovar, Christie, Kroll, Ashley R., Kuwar, Suyog S., Lee, Sandy L., Lehman, Rüdiger, Li, Kai, Li, Zhaofei, Liang, Hanquan, Lovelace, Shanna, Lu, Zhiqiang, Mansfield, Jennifer H., McCulloch, Kyle J., Mathew, Tittu, Morton, Brian, Muzny, Donna M., Neunemann, David, Ongeri, Fiona, Pauchet, Yannick, Pu, Ling-Ling, Pyrousis, Ioannis, Rao, Xiang-Jun, Redding, Amanda, Roesel, Charles, Sanchez-Gracia, Alejandro, Schaack, Sarah, Shukla, Aditi, Tetreau, Guillaume, Wang, Yang, Xiong, Guang-Hua, Traut, Walther, Walsh, Tom K., Worley, Kim C., Wu, Di, Wu, Wenbi, Wu, Yuan-Qing, Zhang, Xiufeng, Zou, Zhen, Zucker, Hannah, Briscoe, Adriana D., Burmester, Thorsten, Clem, Rollie J., Feyereisen, René, Grimmelikhuijzen, Cornelis J.P., Hamodrakas, Stavros J., Hansson, Bill S., Huguet, Elisabeth, Jermiin, Lars S., Lan, Que, Lehman, Herman K., Lorenzen, Marce, Merzendorfer, Hans, Michalopoulos, Ioannis, Morton, David B., Muthukrishnan, Subbaratnam, Oakeshott, John G., Palmer, Will, Park, Yoonseong, Passarelli, A. Lorena, Rozas, Julio, Schwartz, Lawrence M., Smith, Wendy, Southgate, Agnes, Vilcinskas, Andreas, Vogt, Richard, Wang, Ping, Werren, John, Yu, Xiao-Qiang, Zhou, Jing-Jiang, Brown, Susan J., Scherer, Steven E., Richards, Stephen, and Blissard, Gary W.

Published
2016
Full Text
View/download PDF

10. The sheep genome illuminates biology of the rumen and lipid metabolism

Author

Jiang, Yu, Xie, Min, Chen, Wenbin, Talbot, Richard, Maddox, Jillian F., Faraut, Thomas, Wu, Chunhua, Muzny, Donna M., Li, Yuxiang, Zhang, Wenguang, Stanton, Jo-Ann, Brauning, Rudiger, Barris, Wesley C., Hourlier, Thibaut, Aken, Bronwen L., Searle, Stephen M. J., Adelson, David L., Bian, Chao, Cam, Graham R., Chen, Yulin, Cheng, Shifeng, DeSilva, Udaya, Dixen, Karen, Dong, Yang, Fan, Guangyi, Franklin, Ian R., Fu, Shaoyin, Fuentes-Utrilla, Pablo, Guan, Rui, Highland, Margaret A., Holder, Michael E., Huang, Guodong, Ingham, Aaron B., Jhangiani, Shalini N., Kalra, Divya, Kovar, Christie L., Lee, Sandra L., Liu, Weiqing, Liu, Xin, Lu, Changxin, Lv, Tian, Mathew, Tittu, McWilliam, Sean, Menzies, Moira, Pan, Shengkai, Robelin, David, Servin, Bertrand, Townley, David, Wang, Wenliang, Wei, Bin, White, Stephen N., Yang, Xinhua, Ye, Chen, Yue, Yaojing, Zeng, Peng, Zhou, Qing, Hansen, Jacob B., Kristiansen, Karsten, Gibbs, Richard A., Flicek, Paul, Warkup, Christopher C., Jones, Huw E., Oddy, V. Hutton, Nicholas, Frank W., McEwan, John C., Kijas, James W., Wang, Jun, Worley, Kim C., Archibald, Alan L., Cockett, Noelle, Xu, Xun, Wang, Wen, and Dalrymple, Brian P.

Published
2014

11. Somatic mutations affect key pathways in lung adenocarcinoma

Author

Ding, Li, Getz, Gad, Wheeler, David A., Mardis, Elaine R., McLellan, Michael D., Cibulskis, Kristian, Sougnez, Carrie, Greulich, Heidi, Muzny, Donna M., Morgan, Margaret B., Fulton, Lucinda, Fulton, Robert S., Zhang, Qunyuan, Wendl, Michael C., Lawrence, Michael S., Larson, David E., Chen, Ken, Dooling, David J., Sabo, Aniko, Hawes, Alicia C., Shen, Hua, Jhangiani, Shalini N., Lewis, Lora R., Hall, Otis, Zhu, Yiming, Mathew, Tittu, Ren, Yanru, Yao, Jiqiang, Scherer, Steven E., Clerc, Kerstin, Metcalf, Ginger A., Ng, Brian, Milosavljevic, Aleksandar, Gonzalez-Garay, Manuel L., Osborne, John R., Meyer, Rick, Shi, Xiaoqi, Tang, Yuzhu, Koboldt, Daniel C., Lin, Ling, Abbott, Rachel, Miner, Tracie L., Pohl, Craig, Fewell, Ginger, Haipek, Carrie, Schmidt, Heather, Dunford-Shore, Brian H., Kraja, Aldi, Crosby, Seth D., Sawyer, Christopher S., Vickery, Tammi, Sander, Sacha, Robinson, Jody, Winckler, Wendy, Baldwin, Jennifer, Chirieac, Lucian R., Dutt, Amit, Fennell, Tim, Hanna, Megan, Johnson, Bruce E., Onofrio, Robert C., Thomas, Roman K., Tonon, Giovanni, Weir, Barbara A., Zhao, Xiaojun, Ziaugra, Liuda, Zody, Michael C., Giordano, Thomas, Orringer, Mark B., Roth, Jack A., Spitz, Margaret R., Wistuba, Ignacio I., Ozenberger, Bradley, Good, Peter J., Chang, Andrew C., Beer, David G., Watson, Mark A., Ladanyi, Marc, Broderick, Stephen, Yoshizawa, Akihiko, Travis, William D., Pao, William, Province, Michael A., Weinstock, George M., Varmus, Harold E., Gabriel, Stacey B., Lander, Eric S., Gibbs, Richard A., Meyerson, Matthew, and Wilson, Richard K.

Subjects
Diagnosis, Care and treatment, Physiological aspects, Genetic aspects, Research, Prognosis, Lung cancer -- Genetic aspects -- Research -- Care and treatment -- Diagnosis -- Prognosis, Adenocarcinoma -- Genetic aspects -- Research -- Care and treatment -- Prognosis -- Diagnosis, Gene mutation -- Research -- Physiological aspects -- Genetic aspects, DNA sequencing -- Research -- Physiological aspects -- Genetic aspects, Gene mutations -- Research -- Physiological aspects -- Genetic aspects, Nucleotide sequencing -- Research -- Physiological aspects -- Genetic aspects
Abstract

Determining the genetic basis of cancer requires comprehensive analyses of large collections of histopathologically well-classified primary tumours. Here we report the results of a collaborative study to discover somatic mutations [...]

Published
2008

14. A stochastic Galerkin cell-based smoothed finite element method (SGCS-FEM)

Author

Mathew, Tittu, Beex, Lars, Bordas, Stéphane, and Natarajan, Sundararajan

Subjects
Stochastic Galerkin Cell-based Smoothed Finite Element Method (SGCS- FEM), Materials science & engineering [C09] [Engineering, computing & technology], Multidisciplinary, general & others [C99] [Engineering, computing & technology], Mechanical engineering [C10] [Engineering, computing & technology], Random Material Properties, Free Vibrations, Multidisciplinaire, généralités & autres [C99] [Ingénierie, informatique & technologie], Science des matériaux & ingénierie [C09] [Ingénierie, informatique & technologie], Ingénierie mécanique [C10] [Ingénierie, informatique & technologie], Karhunen-Loeve expansion (KLE), Aerospace & aeronautics engineering [C01] [Engineering, computing & technology], Ingénierie aérospatiale [C01] [Ingénierie, informatique & technologie], Polynomial Chaos Expansion (PLE), Civil engineering [C04] [Engineering, computing & technology], Ingénierie civile [C04] [Ingénierie, informatique & technologie]
Abstract

In this paper, the cell based smoothed finite element method is extended to solve stochastic partial diff erential equations with uncertain input parameters. The spatial field of Young's moduli and the corresponding stochastic results are represented by Karhunen-Lo eve expansion and polynomial chaos expansion, respectively. The Young's Modulus of structure is considered to be random for stochastic static as well as free vibration problems. Mathematical expressions and the solution procedure are articulated in detail to evaluate the statistical characteristics of responses in terms of static displacements and free vibration frequencies. The feasibility and eff ectiveness of the proposed SGCS-FEM method in terms of accuracy and lower requirement on the mesh size in the solution domain over that of conventional FEM for stochastic problems are demonstrated by carefully chosen numerical examples. From the numerical study, it is inferred that the proposed framework is computationally less demanding without compromising accuracy.

Published
2019

15. Geometrical and material uncertainties for the mechanics of composites

Author

Barbosa, Joaquim, Bordas, Stéphane, Carvalho, Andre, Ding, Chensen, Lian, Haojie, Loja, Maria Amelia, Mathew, Tittu, Natarajan, Sundararajan, Rappel, Hussein, Rodrigues, Jose, and Suarez, Camilo

Subjects
Multidisciplinaire, généralités & autres [C99] [Ingénierie, informatique & technologie], Multidisciplinary, general & others [C99] [Engineering, computing & technology]
Published
2019

18. A Stochastic Galerkin Cell-based Smoothed Finite Element Method (SGCS–FEM).

Author

Mathew, Tittu Varghese, Beex, Lars, Bordas, Stéphane PA, and Natarajan, Sundararajan

Subjects
FINITE element method, POLYNOMIAL chaos, STOCHASTIC partial differential equations, FREQUENCIES of oscillating systems, FREE vibration, YOUNG'S modulus
Abstract

In this paper, the cell-based smoothed finite element method is extended to solve stochastic partial differential equations with uncertain input parameters. The spatial field of Young's Modulus and the corresponding stochastic results are represented by Karhunen-Loéve expansion and polynomial chaos expansion, respectively. Young's Modulus of structure is considered to be random for stochastic static as well as free vibration problems. Mathematical expressions and the solution procedure are articulated in detail to evaluate the statistical characteristics of responses in terms of the static displacements and the free vibration frequencies. The feasibility and the effectiveness of the proposed SGCS–FEM method in terms of accuracy and lower demand on the mesh size in the solution domain over that of conventional FEM for stochastic problems are demonstrated by carefully chosen numerical examples. From the numerical study, it is inferred that the proposed framework yields accurate results. [ABSTRACT FROM AUTHOR]

Published
2020
Full Text
View/download PDF

20. A Massive Expansion of Effector Genes Underlies Gall-Formation in the Wheat Pest Mayetiola destructor

Author

Zhao, Chaoyang, Escalante, Lucio Navarro, Chen, Hang, Benatti, Thiago R., Qu, Jiaxin, Chellapilla, Sanjay, Waterhouse, Robert M., Wheeler, David, Andersson, Martin N., Bao, Riyue, Batterton, Matthew, Behura, Susanta K., Blankenburg, Kerstin P., Caragea, Doina, Carolan, James C., Coyle, Marcus, El-Bouhssini, Mustapha, Francisco, Liezl, Friedrich, Markus, Gill, Navdeep, Grace, Tony, Grimmelikhuijzen, Cornelis J.P., Han, Yi, Hauser, Frank, Herndon, Nicolae, Holder, Michael, Ioannidis, Panagiotis, Jackson, LaRonda, Javaid, Mehwish, Jhangiani, Shalini N., Johnson, Alisha J., Kalra, Divya, Korchina, Viktoriya, Kovar, Christie L., Lara, Fremiet, Lee, Sandra L., Liu, Xuming, Löfstedt, Christer, Mata, Robert, Mathew, Tittu, Muzny, Donna M., Nagar, Swapnil, Nazareth, Lynne V., Okwuonu, Geoffrey, Ongeri, Fiona, Perales, Lora, Peterson, Brittany F., Pu, Ling-Ling, Robertson, Hugh M., Schemerhorn, Brandon J., Scherer, Steven E., Shreve, Jacob T., Simmons, DeNard, Subramanyam, Subhashree, Thornton, Rebecca L., Xue, Kun, Weissenberger, George M., Williams, Christie E., Worley, Kim C., Zhu, Dianhui, Zhu, Yiming, Harris, Marion O., Shukle, Richard H., Werren, John H., Zdobnov, Evgeny M., Chen, Ming-Shun, Brown, Susan J., Stuart, Jeffery J., and Richards, Stephen

Published
2015
Full Text
View/download PDF

21. The genomes of two key bumblebee species with primitive eusocial organization

Author

Sadd, Ben M., Barribeau, Seth M., Bloch, Guy, de Graaf, Dirk C., Dearden, Peter, Elsik, Christine G., Gadau, Jürgen, Grimmelikhuijzen, Cornelis J. P., Hasselmann, Martin, Lozier, Jeffrey D., Robertson, Hugh M., Smagghe, Guy, Stolle, Eckart, Van Vaerenbergh, Matthias, Waterhouse, Robert M., Bornberg-Bauer, Erich, Klasberg, Steffen, Bennett, Anna K., Câmara, Francisco, Guigó, Roderic, Hoff, Katharina, Mariotti, Marco, Munoz-Torres, Monica, Murphy, Terence, Santesmasses, Didac, Amdam, Gro V., Beckers, Matthew, Beye, Martin, Biewer, Matthias, Bitondi, Márcia M. G., Blaxter, Mark L., Bourke, Andrew F. G., Brown, Mark J. F., Buechel, Severine D., Cameron, Rossanah, Cappelle, Kaat, Carolan, James C., Christiaens, Olivier, Ciborowski, Kate L., Clarke, David F., Colgan, Thomas J., Collins, David H., Cridge, Andrew G., Dalmay, Tamas, Dreier, Stephanie, du Plessis, Louis, Duncan, Elizabeth, Erler, Silvio, Evans, Jay, Falcon, Tiago, Flores, Kevin, Freitas, Flávia C. P., Fuchikawa, Taro, Gempe, Tanja, Hartfelder, Klaus, Hauser, Frank, Helbing, Sophie, Humann, Fernanda C., Irvine, Frano, Jermiin, Lars S., Johnson, Claire E., Johnson, Reed M., Jones, Andrew K., Kadowaki, Tatsuhiko, Kidner, Jonathan H., Koch, Vasco, Köhler, Arian, Kraus, F. Bernhard, Lattorff, H. Michael G., Leask, Megan, Lockett, Gabrielle A., Mallon, Eamonn B., Antonio, David S. Marco, Marxer, Monika, Meeus, Ivan, Moritz, Robin F. A., Nair, Ajay, Näpflin, Kathrin, Nissen, Inga, Niu, Jinzhi, Nunes, Francis M. F., Oakeshott, John G., Osborne, Amy, Otte, Marianne, Pinheiro, Daniel G., Rossié, Nina, Rueppell, Olav, Santos, Carolina G., Schmid-Hempel, Regula, Schmitt, Björn D., Schulte, Christina, Simões, Zilá L. P., Soares, Michelle P. M., Swevers, Luc, Winnebeck, Eva C., Wolschin, Florian, Yu, Na, Zdobnov, Evgeny M., Aqrawi, Peshtewani K., Blankenburg, Kerstin P., Coyle, Marcus, Francisco, Liezl, Hernandez, Alvaro G., Holder, Michael, Hudson, Matthew E., Jackson, LaRonda, Jayaseelan, Joy, Joshi, Vandita, Kovar, Christie, Lee, Sandra L., Mata, Robert, Mathew, Tittu, Newsham, Irene F., Ngo, Robin, Okwuonu, Geoffrey, Pham, Christopher, Pu, Ling-Ling, Saada, Nehad, Santibanez, Jireh, Simmons, DeNard, Thornton, Rebecca, Venkat, Aarti, Walden, Kimberly Ko, Wu, Yuan-Qing, Debyser, Griet, Devreese, Bart, Asher, Claire, Blommaert, Julie, Chipman, Ariel D., Chittka, Lars, Fouks, Bertrand, Liu, Jisheng, O'Neill, Meaghan P., Sumner, Seirian, Puiu, Daniela, Qu, Jiaxin, Salzberg, Steven L., Scherer, Steven E., Muzny, Donna M., Richards, Stephen, Robinson, Gene E., Gibbs, Richard A., Schmid-Hempel, Paul, Worley, Kim C., Sadd, Ben M., Barribeau, Seth M., Bloch, Guy, de Graaf, Dirk C., Dearden, Peter, Elsik, Christine G., Gadau, Jürgen, Grimmelikhuijzen, Cornelis J. P., Hasselmann, Martin, Lozier, Jeffrey D., Robertson, Hugh M., Smagghe, Guy, Stolle, Eckart, Van Vaerenbergh, Matthias, Waterhouse, Robert M., Bornberg-Bauer, Erich, Klasberg, Steffen, Bennett, Anna K., Câmara, Francisco, Guigó, Roderic, Hoff, Katharina, Mariotti, Marco, Munoz-Torres, Monica, Murphy, Terence, Santesmasses, Didac, Amdam, Gro V., Beckers, Matthew, Beye, Martin, Biewer, Matthias, Bitondi, Márcia M. G., Blaxter, Mark L., Bourke, Andrew F. G., Brown, Mark J. F., Buechel, Severine D., Cameron, Rossanah, Cappelle, Kaat, Carolan, James C., Christiaens, Olivier, Ciborowski, Kate L., Clarke, David F., Colgan, Thomas J., Collins, David H., Cridge, Andrew G., Dalmay, Tamas, Dreier, Stephanie, du Plessis, Louis, Duncan, Elizabeth, Erler, Silvio, Evans, Jay, Falcon, Tiago, Flores, Kevin, Freitas, Flávia C. P., Fuchikawa, Taro, Gempe, Tanja, Hartfelder, Klaus, Hauser, Frank, Helbing, Sophie, Humann, Fernanda C., Irvine, Frano, Jermiin, Lars S., Johnson, Claire E., Johnson, Reed M., Jones, Andrew K., Kadowaki, Tatsuhiko, Kidner, Jonathan H., Koch, Vasco, Köhler, Arian, Kraus, F. Bernhard, Lattorff, H. Michael G., Leask, Megan, Lockett, Gabrielle A., Mallon, Eamonn B., Antonio, David S. Marco, Marxer, Monika, Meeus, Ivan, Moritz, Robin F. A., Nair, Ajay, Näpflin, Kathrin, Nissen, Inga, Niu, Jinzhi, Nunes, Francis M. F., Oakeshott, John G., Osborne, Amy, Otte, Marianne, Pinheiro, Daniel G., Rossié, Nina, Rueppell, Olav, Santos, Carolina G., Schmid-Hempel, Regula, Schmitt, Björn D., Schulte, Christina, Simões, Zilá L. P., Soares, Michelle P. M., Swevers, Luc, Winnebeck, Eva C., Wolschin, Florian, Yu, Na, Zdobnov, Evgeny M., Aqrawi, Peshtewani K., Blankenburg, Kerstin P., Coyle, Marcus, Francisco, Liezl, Hernandez, Alvaro G., Holder, Michael, Hudson, Matthew E., Jackson, LaRonda, Jayaseelan, Joy, Joshi, Vandita, Kovar, Christie, Lee, Sandra L., Mata, Robert, Mathew, Tittu, Newsham, Irene F., Ngo, Robin, Okwuonu, Geoffrey, Pham, Christopher, Pu, Ling-Ling, Saada, Nehad, Santibanez, Jireh, Simmons, DeNard, Thornton, Rebecca, Venkat, Aarti, Walden, Kimberly Ko, Wu, Yuan-Qing, Debyser, Griet, Devreese, Bart, Asher, Claire, Blommaert, Julie, Chipman, Ariel D., Chittka, Lars, Fouks, Bertrand, Liu, Jisheng, O'Neill, Meaghan P., Sumner, Seirian, Puiu, Daniela, Qu, Jiaxin, Salzberg, Steven L., Scherer, Steven E., Muzny, Donna M., Richards, Stephen, Robinson, Gene E., Gibbs, Richard A., Schmid-Hempel, Paul, and Worley, Kim C.

Abstract

BACKGROUND: The shift from solitary to social behavior is one of the major evolutionary transitions. Primitively eusocial bumblebees are uniquely placed to illuminate the evolution of highly eusocial insect societies. Bumblebees are also invaluable natural and agricultural pollinators, and there is widespread concern over recent population declines in some species. High-quality genomic data will inform key aspects of bumblebee biology, including susceptibility to implicated population viability threats. RESULTS: We report the high quality draft genome sequences of Bombus terrestris and Bombus impatiens, two ecologically dominant bumblebees and widely utilized study species. Comparing these new genomes to those of the highly eusocial honeybee Apis mellifera and other Hymenoptera, we identify deeply conserved similarities, as well as novelties key to the biology of these organisms. Some honeybee genome features thought to underpin advanced eusociality are also present in bumblebees, indicating an earlier evolution in the bee lineage. Xenobiotic detoxification and immune genes are similarly depauperate in bumblebees and honeybees, and multiple categories of genes linked to social organization, including development and behavior, show high conservation. Key differences identified include a bias in bumblebee chemoreception towards gustation from olfaction, and striking differences in microRNAs, potentially responsible for gene regulation underlying social and other traits. CONCLUSIONS: These two bumblebee genomes provide a foundation for post-genomic research on these key pollinators and insect societies. Overall, gene repertoires suggest that the route to advanced eusociality in bees was mediated by many small changes in many genes and processes, and not by notable expansion or depauperation.

Published
2015
Full Text
View/download PDF

22. The genomes of two key bumblebee species with primitive eusocial organization

Author

Sadd, Ben M, primary, Barribeau, Seth M, additional, Bloch, Guy, additional, de Graaf, Dirk C, additional, Dearden, Peter, additional, Elsik, Christine G, additional, Gadau, Jürgen, additional, Grimmelikhuijzen, Cornelis JP, additional, Hasselmann, Martin, additional, Lozier, Jeffrey D, additional, Robertson, Hugh M, additional, Smagghe, Guy, additional, Stolle, Eckart, additional, Van Vaerenbergh, Matthias, additional, Waterhouse, Robert M, additional, Bornberg-Bauer, Erich, additional, Klasberg, Steffen, additional, Bennett, Anna K, additional, Câmara, Francisco, additional, Guigó, Roderic, additional, Hoff, Katharina, additional, Mariotti, Marco, additional, Munoz-Torres, Monica, additional, Murphy, Terence, additional, Santesmasses, Didac, additional, Amdam, Gro V, additional, Beckers, Matthew, additional, Beye, Martin, additional, Biewer, Matthias, additional, Bitondi, Márcia MG, additional, Blaxter, Mark L, additional, Bourke, Andrew FG, additional, Brown, Mark JF, additional, Buechel, Severine D, additional, Cameron, Rossanah, additional, Cappelle, Kaat, additional, Carolan, James C, additional, Christiaens, Olivier, additional, Ciborowski, Kate L, additional, Clarke, David F, additional, Colgan, Thomas J, additional, Collins, David H, additional, Cridge, Andrew G, additional, Dalmay, Tamas, additional, Dreier, Stephanie, additional, du Plessis, Louis, additional, Duncan, Elizabeth, additional, Erler, Silvio, additional, Evans, Jay, additional, Falcon, Tiago, additional, Flores, Kevin, additional, Freitas, Flávia CP, additional, Fuchikawa, Taro, additional, Gempe, Tanja, additional, Hartfelder, Klaus, additional, Hauser, Frank, additional, Helbing, Sophie, additional, Humann, Fernanda C, additional, Irvine, Frano, additional, Jermiin, Lars S, additional, Johnson, Claire E, additional, Johnson, Reed M, additional, Jones, Andrew K, additional, Kadowaki, Tatsuhiko, additional, Kidner, Jonathan H, additional, Koch, Vasco, additional, Köhler, Arian, additional, Kraus, F Bernhard, additional, Lattorff, H Michael G, additional, Leask, Megan, additional, Lockett, Gabrielle A, additional, Mallon, Eamonn B, additional, Antonio, David S Marco, additional, Marxer, Monika, additional, Meeus, Ivan, additional, Moritz, Robin FA, additional, Nair, Ajay, additional, Näpflin, Kathrin, additional, Nissen, Inga, additional, Niu, Jinzhi, additional, Nunes, Francis MF, additional, Oakeshott, John G, additional, Osborne, Amy, additional, Otte, Marianne, additional, Pinheiro, Daniel G, additional, Rossié, Nina, additional, Rueppell, Olav, additional, Santos, Carolina G, additional, Schmid-Hempel, Regula, additional, Schmitt, Björn D, additional, Schulte, Christina, additional, Simões, Zilá LP, additional, Soares, Michelle PM, additional, Swevers, Luc, additional, Winnebeck, Eva C, additional, Wolschin, Florian, additional, Yu, Na, additional, Zdobnov, Evgeny M, additional, Aqrawi, Peshtewani K, additional, Blankenburg, Kerstin P, additional, Coyle, Marcus, additional, Francisco, Liezl, additional, Hernandez, Alvaro G, additional, Holder, Michael, additional, Hudson, Matthew E, additional, Jackson, LaRonda, additional, Jayaseelan, Joy, additional, Joshi, Vandita, additional, Kovar, Christie, additional, Lee, Sandra L, additional, Mata, Robert, additional, Mathew, Tittu, additional, Newsham, Irene F, additional, Ngo, Robin, additional, Okwuonu, Geoffrey, additional, Pham, Christopher, additional, Pu, Ling-Ling, additional, Saada, Nehad, additional, Santibanez, Jireh, additional, Simmons, DeNard, additional, Thornton, Rebecca, additional, Venkat, Aarti, additional, Walden, Kimberly KO, additional, Wu, Yuan-Qing, additional, Debyser, Griet, additional, Devreese, Bart, additional, Asher, Claire, additional, Blommaert, Julie, additional, Chipman, Ariel D, additional, Chittka, Lars, additional, Fouks, Bertrand, additional, Liu, Jisheng, additional, O’Neill, Meaghan P, additional, Sumner, Seirian, additional, Puiu, Daniela, additional, Qu, Jiaxin, additional, Salzberg, Steven L, additional, Scherer, Steven E, additional, Muzny, Donna M, additional, Richards, Stephen, additional, Robinson, Gene E, additional, Gibbs, Richard A, additional, Schmid-Hempel, Paul, additional, and Worley, Kim C, additional

Published
2015
Full Text
View/download PDF

23. The first myriapod genome sequence reveals conservative arthropod gene content and genome organisation in the centipede Strigamia maritima

Author

Chipman, Ariel D., Ferrier, David E.K., Brena, Carlo, Qu, Jiaxin, Hughes, Daniel S.T., Schröder, Reinhard, Torres-Oliva, Montserrat, Znassi, Nadia, Jiang, Huaiyang, Almeida, Francisca C, Alonso, Claudio R, Apostolou, Zivkos, Aqrawi, Peshtewani, Arthur, Wallace, Barna, Jennifer C J, Blankenburg, Kerstin P, Brites, Daniela, Capella-Gutiérrez, Salvador, Coyle, Marcus, Dearden, Peter K, Du Pasquier, Louis, Duncan, Elizabeth J, Ebert, Dieter, Eibner, Cornelius, Erikson, Galina, Evans, Peter D, Extavour, Cassandra G, Francisco, Liezl, Gabaldón, Toni, Gillis, William J, Goodwin-Horn, Elizabeth A, Green, Jack E, Griffiths-Jones, Sam, Grimmelikhuijzen, Cornelis, Gubbala, Sai, Guigó, Roderic, Han, Yi, Hauser, Frank, Havlak, Paul, Hayden, Luke, Helbing, Sophie, Holder, Michael, Hui, Jerome H L, Hunn, Julia P, Hunnekuhl, Vera S, Jackson, LaRonda, Javaid, Mehwish, Jhangiani, Shalini N, Jiggins, Francis M, Jones, Tamsin E, Kaiser, Tobias S, Kalra, Divya, Kenny, Nathan J, Korchina, Viktoriya, Kovar, Christie L, Kraus, F Bernhard, Lapraz, François, Lee, Sandra L, Lv, Jie, Mandapat, Christigale, Manning, Gerard, Mariotti, Marco, Mata, Robert, Mathew, Tittu, Neumann, Tobias, Newsham, Irene, Ngo, Dinh N, Ninova, Maria, Okwuonu, Geoffrey, Ongeri, Fiona, Palmer, William J, Patil, Shobha, Patraquim, Pedro, Pham, Christopher, Pu, Ling-Ling, Putman, Nicholas H, Rabouille, Catherine, Ramos, Olivia Mendivil, Rhodes, Adelaide C, Robertson, Helen E, Robertson, Hugh M, Ronshaugen, Matthew, Rozas, Julio, Saada, Nehad, Sánchez-Gracia, Alejandro, Scherer, Steven E, Schurko, Andrew M, Siggens, Kenneth W, Simmons, DeNard, Stief, Anna, Stolle, Eckart, Telford, Maximilian J, Tessmar-Raible, Kristin, Thornton, Rebecca, van der Zee, Maurijn, von Haeseler, Arndt, Williams, James M, Willis, Judith H, Wu, Yuanqing, Zou, Xiaoyan, Lawson, Daniel, Muzny, Donna M, Worley, Kim C, Gibbs, Richard A, Akam, Michael, Richards, Stephen, Chipman, Ariel D., Ferrier, David E.K., Brena, Carlo, Qu, Jiaxin, Hughes, Daniel S.T., Schröder, Reinhard, Torres-Oliva, Montserrat, Znassi, Nadia, Jiang, Huaiyang, Almeida, Francisca C, Alonso, Claudio R, Apostolou, Zivkos, Aqrawi, Peshtewani, Arthur, Wallace, Barna, Jennifer C J, Blankenburg, Kerstin P, Brites, Daniela, Capella-Gutiérrez, Salvador, Coyle, Marcus, Dearden, Peter K, Du Pasquier, Louis, Duncan, Elizabeth J, Ebert, Dieter, Eibner, Cornelius, Erikson, Galina, Evans, Peter D, Extavour, Cassandra G, Francisco, Liezl, Gabaldón, Toni, Gillis, William J, Goodwin-Horn, Elizabeth A, Green, Jack E, Griffiths-Jones, Sam, Grimmelikhuijzen, Cornelis, Gubbala, Sai, Guigó, Roderic, Han, Yi, Hauser, Frank, Havlak, Paul, Hayden, Luke, Helbing, Sophie, Holder, Michael, Hui, Jerome H L, Hunn, Julia P, Hunnekuhl, Vera S, Jackson, LaRonda, Javaid, Mehwish, Jhangiani, Shalini N, Jiggins, Francis M, Jones, Tamsin E, Kaiser, Tobias S, Kalra, Divya, Kenny, Nathan J, Korchina, Viktoriya, Kovar, Christie L, Kraus, F Bernhard, Lapraz, François, Lee, Sandra L, Lv, Jie, Mandapat, Christigale, Manning, Gerard, Mariotti, Marco, Mata, Robert, Mathew, Tittu, Neumann, Tobias, Newsham, Irene, Ngo, Dinh N, Ninova, Maria, Okwuonu, Geoffrey, Ongeri, Fiona, Palmer, William J, Patil, Shobha, Patraquim, Pedro, Pham, Christopher, Pu, Ling-Ling, Putman, Nicholas H, Rabouille, Catherine, Ramos, Olivia Mendivil, Rhodes, Adelaide C, Robertson, Helen E, Robertson, Hugh M, Ronshaugen, Matthew, Rozas, Julio, Saada, Nehad, Sánchez-Gracia, Alejandro, Scherer, Steven E, Schurko, Andrew M, Siggens, Kenneth W, Simmons, DeNard, Stief, Anna, Stolle, Eckart, Telford, Maximilian J, Tessmar-Raible, Kristin, Thornton, Rebecca, van der Zee, Maurijn, von Haeseler, Arndt, Williams, James M, Willis, Judith H, Wu, Yuanqing, Zou, Xiaoyan, Lawson, Daniel, Muzny, Donna M, Worley, Kim C, Gibbs, Richard A, Akam, Michael, and Richards, Stephen

Abstract

Myriapods (e.g., centipedes and millipedes) display a simple homonomous body plan relative to other arthropods. All members of the class are terrestrial, but they attained terrestriality independently of insects. Myriapoda is the only arthropod class not represented by a sequenced genome. We present an analysis of the genome of the centipede Strigamia maritima. It retains a compact genome that has undergone less gene loss and shuffling than previously sequenced arthropods, and many orthologues of genes conserved from the bilaterian ancestor that have been lost in insects. Our analysis locates many genes in conserved macro-synteny contexts, and many small-scale examples of gene clustering. We describe several examples where S. maritima shows different solutions from insects to similar problems. The insect olfactory receptor gene family is absent from S. maritima, and olfaction in air is likely effected by expansion of other receptor gene families. For some genes S. maritima has evolved paralogues to generate coding sequence diversity, where insects use alternate splicing. This is most striking for the Dscam gene, which in Drosophila generates more than 100,000 alternate splice forms, but in S. maritima is encoded by over 100 paralogues. We see an intriguing linkage between the absence of any known photosensory proteins in a blind organism and the additional absence of canonical circadian clock genes. The phylogenetic position of myriapods allows us to identify where in arthropod phylogeny several particular molecular mechanisms and traits emerged. For example, we conclude that juvenile hormone signalling evolved with the emergence of the exoskeleton in the arthropods and that RR-1 containing cuticle proteins evolved in the lineage leading to Mandibulata. We also identify when various gene expansions and losses occurred. The genome of S. maritima offers us a unique glimpse into the ancestral arthropod genome, while also displaying many adaptations to its specific l

Published
2014

Catalog

Books, media, physical & digital resources
See catalog results