Teiya Kijimoto

Teiya Kijimoto
West Virginia University | WVU · Division of Plant and Soil Sciences

PhD

About

38
Publications
5,386
Reads
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641
Citations
Additional affiliations
January 2006 - December 2014
Indiana University Bloomington
Position
  • PostDoc Position

Publications

Publications (38)
Article
Full-text available
Organisms alter their phenotypes in response to changing environmental conditions. The developmental basis of this phenomenon, phenotypic plasticity, is a topic of broad interest in many fields of biology. While insects provide a suitable model for studying the genetic basis of phenotypic plasticity, the physiological aspects of plasticity are not...
Article
Full-text available
Symbiosis can facilitate the development of specialized organs in the host body to maintain relationships with beneficial microorganisms. To understand the developmental and genetic mechanisms by which such organs develop, it is critical to first investigate the morphology and developmental timing of these structures during the onset of host develo...
Article
Entomopathogenic fungi routinely kill their hosts before releasing infectious spores, but a few species keep insects alive while sporulating, which enhances dispersal. Transcriptomics- and metabolomics-based studies of entomopathogens with post-mortem dissemination from their parasitized hosts have unraveled infection processes and host responses....
Preprint
Full-text available
Entomopathogenic fungi routinely kill their hosts before releasing infectious conidia, but select species keep their hosts alive while sporulating to enhance spore dispersal. Recent expression and metabolomics studies involving host-killing entomopathogens have helped unravel infection processes and host responses, yet the mechanisms underlying act...
Article
Full-text available
The Baylor College of Medicine recently sequenced and annotated the Onthophagus taurus genome as part of the i5k pilot project. This dataset presents the Onthophagus taurus gene set BCM_v_0.5.3, which was generated computationally. RNA-Seq data was used with additional protein homology data for a MAKER automated annotation of the Onthophagus tauru...
Article
The recruitment of modular developmental genetic components into new developmental contexts has been proposed as a central mechanism enabling the origin of novel traits and trait functions without necessitating the origin of novel pathways. Here, we investigate the function of the hedgehog (Hh) signaling pathway, a highly conserved pathway best und...
Article
Asian Euwallacea ambrosia beetles vector Fusarium mutualists. The ambrosial fusaria are all members of the Ambrosia Fusarium Clade (AFC) within the Fusarium solani species complex (FSSC). Several Euwallacea-Fusarium mutualists have been introduced into non-native regions and have caused varying degrees of damage to orchard, landscape and forest tre...
Article
Full-text available
Developmental responses to nutritional variation represent one of the ecologically most important classes of adaptive plasticity. However, knowledge of genome-wide patterns of nutrition-responsive gene expression is limited. Here, we studied genome-wide transcriptional responses to nutritional variation and their dependency on trait and sex in the...
Article
Polyphenism is defined as a single individual's ability to develop into two or more alternative phenotypes. Polyphenic development is taxonomically widespread among insects, cued by diverse environmental factors, and enables single genotypes to accommodate breathtaking phenotypic diversity. Most research on the developmental regulation and evolutio...
Article
Phenotypic plasticity pervades organismal development and physiology where it facilitates an enormous range of adaptive responses to novel or stressful environments. Plasticity also impacts evolutionary processes, reducing the probability of population extinction in the face of environmental changes and sometimes increasing speciation rates in deve...
Article
Full-text available
Many important questions in developmental biology increasingly interface with related questions in other biological disciplines such as evolutionary biology and ecology. In this article, we review and summarize recent progress in the development of horned beetles and beetle horns as study systems amenable to the integration of a wide range of appro...
Article
Sex-specific trait expression is frequently associated with highly variable, condition-dependent expression within sexes and rapid divergence among closely related species. Horned beetles are an excellent example for studying the molecular basis of these phenomena because horn morphology varies markedly among species, between sexes, and among alter...
Article
Developmental mechanisms play an important role in determining the costs, limits, and evolutionary consequences of phenotypic plasticity. One issue central to these claims is the hypothesis of developmental decoupling, where alternate morphs result from evolutionarily independent developmental pathways. We address this assumption through a microarr...
Article
Full-text available
Horned beetles, in particular in the genus Onthophagus, are important models for studies on sexual selection, biological radiations, the origin of novel traits, developmental plasticity, biocontrol, conservation, and forensic biology. Despite their growing prominence as models for studying both basic and applied questions in biology, little genomic...
Data
Most and least variable genes. A table showing results of Fisher's exact test for GO term enrichment in the most and least variable genes.
Data
Onthophagus taurus repeated sequences. A table containing a summary of repeated sequences by RepeatMasker.
Data
Full-text available
Comparison of read quality between sequences with and without database hits. "Hit" refers to contigs with significant (e value < 10-5) match against the Tribolium genome and protein databases and/or the NCBI NR database (N = 21847 total). "No Hit" refers to sequences with no significant database match (N = 16203). Shown are histograms for contig le...
Data
BCCs. An excel file showing BCCs with NR protein database support.
Data
Blast matches of non-redundant sequences to NCBI NR proteins. An excel file showing contigs and singletons that match to NCBI NR proteins.
Data
Metabolic pathways map. A metabolic pathway map showing the steps represented by Onthophagus sequences (thick lines).
Data
Assembled sequences and singletons. A text file containing 39,088 contig and 10,992 singleton sequences in FASTA format.
Data
HomoloGene clusters. An excel file showing HomoloGene clusters.
Data
Confidence distribution of sequence variants. A figure showing frequency histograms of the confidence scores of sequence variants. "Major allele" refers to the more common sequence variant, while "minor allele" refers to the rarer sequence variant.
Data
Sequence changes of SNPs and Indels. A figure showing a heat map of sequence changes in SNPs and indels.
Article
Holometabolous insects provide an excellent opportunity to study both the properties of development as well as their evolution and diversification across taxa. Here we investigate the developmental basis and evolutionary diversification of secondary trait loss during development in the expression of beetle horns, a novel and highly diverse class of...
Data
Summary of BLASTx results of Onthophagus taurus ESTs against UniProtKB. Summary of BLASTx sequence alignments of non-redundant sequences from Ot libraries (refer Results section) against UniProtKB protein dataset. The top BLASTx hits with E-values < 10-5 are shown.
Data
Summary of BLASTx results of Onthophagus ESTs against all the datasets used in this study. Summary of BLASTx sequence alignments of Onthophagus ESTs against all the datasets used in this study. The bit score, E-value, and percent identity as well as the gene names from Tribolium, Drosophila, C. elegans, invertebrate, human, and nr dataset are shown...
Data
List of genes exhibiting differential expression in horn- or leg primordia compared to abdominal epithelium. Listed are genes exhibiting significant (p < 0.05) and at least 2-fold difference in expression intensity in primordial head horns and/or prothoracic horns and/or legs. Shown are spot- or contig IDs, the tissue(s) in which differential expre...
Data
Summary of BLASTx results of Onthophagus taurus ESTs against FlyBase. Summary of BLASTx sequence alignments of non-redundant sequences from Ot libraries (refer Results section) against FlyBase protein dataset. The top BLASTx hits with the E-values < 10-5 are shown.
Article
Full-text available
The origin of novel traits and their subsequent diversification represent central themes in evo-devo and evolutionary ecology. Here we explore the genetic and genomic basis of a class of traits that is both novel and highly diverse, in a group of organisms that is ecologically complex and experimentally tractable: horned beetles. We developed two h...
Article
Horned beetles and beetle horns are emerging as a model system suited to address fundamental questions in evolutionary developmental biology. Here we briefly review the biology of horned beetles and highlight the unusual opportunities they provide for evo-devo research. We then summarize recent advances in the development of new approaches and tech...
Article
Lake Victoria harbors more than 300 species of cichlid fish, which are adapted to a variety of ecological niches with various morphological species-specific features. However, it is believed that these species arose explosively within the last 14,000 years and transcripts among Lake Victoria cichlid species are almost identical in sequence. These d...
Article
Full-text available
Lake Victoria cichlid fishes are excellent examples of explosive adaptive radiation. Although Lake Victoria cichlids are believed to have arisen during a short period (approximately 14,000 years), they have various species-specific phenotypes. One important phenotype that distinguishes each species is the shape of the jaw, which has diverged to ada...
Article
Archaeosine tRNA-guanine transglycosylase (ArcTGT) catalyzes the exchange of guanine at position 15 in the D-loop of archaeal tRNAs with a free 7-cyano-7-deazaguanine (preQ(0)) base, as the first step in the biosynthesis of an archaea-specific modified base, archaeosine (7-formamidino-7-deazaguanosine). We determined the crystal structures of ArcTG...
Article
The archaeosine tRNA-guanine transglycosylase from the hyperthermophilic archaeon Pyrococcus horikoshii was crystallized and preliminary X-ray characterization was performed. Single crystals were grown by the hanging-drop vapour-diffusion method, using sodium/potassium phosphate and sodium acetate as precipitants. The space group is P4(1)2(1)2 or P...

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Project (1)
Project
The dung beetle genus Onthophagus comprises with over 2,400 extant species, one of the richest genera within the animal kingdom. O. taurus is the most studied dung beetle and a focal taxon for studies in evolutionary ecology, evolutionary genetics, behavioral ecology, evo-devo and developmental genetics. Like many species within the genus it features extreme secondary sexual traits (horns) and extreme sexual dimorphism (cued by sex-specific development). At the same time this species possesses an equally remarkable (and representative) male dimorphism (cued entirely by larval nutrition) in which large males express huge horns which they use as weapons in male combat, whereas small males remain hornless, non-aggressive, and instead invest into enlarged testes and ejaculates. Onthophagus beetles are emerging as a model system in evodevo and ecodevo, in particular with respect to the evolutionary developmental genetics of plasticity, pattern formation, trait integration, and growth regulation. Extensive transcriptomic data already exist for this as well as other species, alongside a growing number of functional studies using larval RNAi-mediated transcript depletion, which works easily and routinely across diverse species within the genus. This projects aims to assemble and annotate a draft genome of the Bull-headed Dung Beetle Genome Project, using a combination of sequencing technologies, automated assembly and gene annotation, and manual curation. Draft versions of the assembly and automatically annotated gene sets are available, and a collaborative effort aims to manually curate and annotate gene sets of particular biological relevance and use the existing expression data across stages and tissues to gain insight into the genomics features of this species.