PacBio scientist Khai Luong reviews her AGBT poster which was the first example showing SMRT Sequencing could be used to directly detect epigenetic modification in a eukaryotic organism.
Dick McCombie from Cold Spring Harbor Laboratory describes de novo sequencing of several organisms, including yeast, Arabidopsis, and rice. With SMRT Sequencing, structural differences are preserved and full chromosomes can assemble into single contigs. Longest read observed: 54 kb.
This seminar features great hands-on information and best practices for analyzing SMRT Sequencing data for eukaryotic genome assembly. Michael Schatz provides an overview of the assembly tools, provides recommendations for when to use each one, and discusses the challenges of short-read assemblies. James Gurtowski gives an in-depth overview of hybrid assemblies methods, where short read data are used used to correct errors in longer reads. Finally, Sergey Koren presents on chromosome-scale assembly, including the MinHash Alignment Process (MHAP) he developed to dramatically reduce the computational processing power required for genome assemblies.
Dr. Olga Vinnere Pettersson, Uppsala Genome Center (Uppsala University), presents best practices for qualifying genomic DNA from a variety of sources to be suitable for Single Molecule, Real-Time Sequencing. Factors that affect single molecule sequencing and recommendations for extracting high-quality genomic DNA will be described. (requires file download to view)
Jason Chin, senior director of bioinformatics at PacBio, talks about using long-read sequence data to generate diploid genome assemblies to produce comprehensive haplotype sequence reconstructions. In the presentation, Chin describes the FALCON Unzip process that combines SNP phasing with the assembly process and allows for determination of the haplotype sequences and identification of structural variants. He presents an example of diploid assembly from inbred Arabidopsis strains.
Brett Hannigan, Computational Biology Project Leader at DNAnexus, demonstrates a fast, accurate, and cost-efficient solution for diploid-aware de novo genome assembly utilizing FALCON on the DNAnexus platform.
This tutorial provides an overview of the Hierarchical Genome Assembly Process (HGAP4) de novo assembly analysis application. HGAP4 generates accurate de novo assemblies using only PacBio data. HGAP4 is suitable for assembling a wide range of genome sizes and complexity. HGAP4 now includes some support for diploid-aware assembly. This tutorial covers features of SMRT Link v5.0.0.
The goal of this session is to help users complete their PacBio genome assembly and generate the best resource for their research. Kingan begins with a brief review of the diploid assembly process used by FALCON and FALCON-Unzip, highlighting the enhanced phasing of the Unzip module, and concluding with recommendations for genome polishing. Next, she explores how heterozygosity can influence the assembly process and how read coverage depth along the assembly can reveal important characteristics of assembly structure. Kingan then recommends approaches, including specific tools, that can be used to quality filter and curate the assembly, including annotation-, coverage-, and…
The Ganoderma genus represents clear biotechnological potential, due to the large quantity of molecules with biological activity that could be explored. However, available information regarding the biotechnological importance of species within Ganoderma, other than G. lucidum, is quite limited. Genomic studies of little-known species can contribute to the knowledge thereof, as well as the search for metabolic pathways and the identification of genes which code for proteins that may be of biotechnological relevance. Therefore, the objective of the present study was to obtain the G. australe genome, through the use of new sequencing technologies. Genomic DNA from G. australe was…
Arthrinium phaeospermum (Corda) M.B. Ellis is a globally distributed pathogenic fungus with a wide host range; its hosts include not only plants, but also humans and animals. This study aimed to develop genomic resources for A. phaeospermum to provide solid data and a theoretical basis for further studies of its pathogenesis, transcriptomics, proteomics, metabolomics and RNA genomics. The genome was obtained from the mycelia of the strain AP-Z13 using a combination of analyses with the high-throughput Illumina HiSeq 4000 system and PacBio RSII LongRead sequencing platform. Functional annotation was performed by BLASTing protein sequences against those in different publicly available…
Agaricomycetes are fruiting body-forming fungi that produce some of the most efficient enzyme systems to degrade wood. Despite decades-long interest in their biology, the evolution and functional diversity of both wood-decay and fruiting body formation are incompletely known. We performed comparative genomic and transcriptomic analyses of wood-decay and fruiting body development in Auriculariopsis ampla and Schizophyllum commune (Schizophyllaceae), species with secondarily simplified morphologies, an enigmatic wood-decay strategy and weak pathogenicity to woody plants. The plant cell wall-degrading enzyme repertoires of Schizophyllaceae are transitional between those of white rot species and less efficient wood-degraders such as brown rot or mycorrhizal fungi.…
Candida auris is an emergent yeast pathogen, easily transmissible between patients and with high percent of multidrug resistant strains. Here we present a draft genome sequence of the first known Russian strain of C. auris, isolated from a case of candidemia. The strain clustered within South Asian C. auris clade and seemingly represented an independent event of dissemination from the original species range. Observed fluconazole resistance was probably due to F105L and K143R mutations in ERG11. © The Author(s) 2019. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology.
The NA1 clonal lineage of Phytophthora ramorum is responsible for Sudden Oak Death, an epidemic that has devastated California’s coastal forest ecosystems. An NA1 isolate Pr102 derived from coast live oak in California was previously sequenced and reported with 65 Mb assembly containing 12 Mb gaps in 2576 scaffolds. Here we report an improved 70 Mb genome in 1512 scaffolds with 6752 bp gaps after incorporating PacBio P5-C3 longreads. This assembly contains 19494 gene models (average gene length 2515 bp) compared to 16134 genes (average gene length of 1673 bp) in the previous version. We predicted 29 new RXLRs and…