Jackson, Daniel John

[["dc.bibliographiccitation.firstpage","221"],["dc.bibliographiccitation.issue","7-8"],["dc.bibliographiccitation.journal","Development Genes and Evolution"],["dc.bibliographiccitation.lastpage","234"],["dc.bibliographiccitation.volume","220"],["dc.contributor.author","Jackson, Daniel John"],["dc.contributor.author","Meyer, Neva P."],["dc.contributor.author","Seaver, Elaine"],["dc.contributor.author","Pang, Kevin"],["dc.contributor.author","McDougall, Carmel"],["dc.contributor.author","Moy, Vanessa N."],["dc.contributor.author","Gordon, Kacy"],["dc.contributor.author","Degnan, Bernard M."],["dc.contributor.author","Martindale, Mark Q."],["dc.contributor.author","Burke, Robert D."],["dc.contributor.author","Peterson, Kevin J."],["dc.date.accessioned","2018-11-07T08:36:07Z"],["dc.date.available","2018-11-07T08:36:07Z"],["dc.date.issued","2010"],["dc.description.abstract","The transcription factor COE (collier/olfactory-1/early B cell factor) is an unusual basic helix-loop-helix transcription factor as it lacks a basic domain and is maintained as a single copy gene in the genomes of all currently analysed non-vertebrate Metazoan genomes. Given the unique features of the COE gene, its proposed ancestral role in the specification of chemosensory neurons and the wealth of functional data from vertebrates and Drosophila, the evolutionary history of the COE gene can be readily investigated. We have examined the ways in which COE expression has diversified among the Metazoa by analysing its expression from representatives of four disparate invertebrate phyla: Ctenophora (Mnemiopsis leidyi); Mollusca (Haliotis asinina); Annelida (Capitella teleta and Chaetopterus) and Echinodermata (Strongylocentrotus purpuratus). In addition, we have studied COE function with knockdown experiments in S. purpuratus, which indicate that COE is likely to be involved in repressing serotonergic cell fate in the apical ganglion of dipleurula larvae. These analyses suggest that COE has played an important role in the evolution of ectodermally derived tissues (likely primarily nervous tissues) and mesodermally derived tissues. Our results provide a broad evolutionary foundation from which further studies aimed at the functional characterisation and evolution of COE can be investigated."],["dc.identifier.doi","10.1007/s00427-010-0343-3"],["dc.identifier.isi","000284550300004"],["dc.identifier.pmid","21069538"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5978"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18236"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0949-944X"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Developmental expression of COE across the Metazoa supports a conserved role in neuronal cell-type specification and mesodermal development"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","160"],["dc.bibliographiccitation.journal","BMC evolutionary biology"],["dc.bibliographiccitation.lastpage","17"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Jackson, Daniel J."],["dc.contributor.author","Wörheide, Gert"],["dc.contributor.author","Degnan, Bernard M."],["dc.date.accessioned","2019-07-10T08:13:01Z"],["dc.date.available","2019-07-10T08:13:01Z"],["dc.date.issued","2007"],["dc.description.abstract","Background: The Mollusca constitute one of the most morphologically and ecologically diverse metazoan phyla, occupying a wide range of marine, terrestrial and freshwater habitats. The evolutionary success of the molluscs can in part be attributed to the evolvability of the external shell. Typically, the shell first forms during embryonic and larval development, changing dramatically in shape, colour and mineralogical composition as development and maturation proceeds. Major developmental transitions in shell morphology often correlate with ecological transitions (e.g. from a planktonic to benthic existence at metamorphosis). While the genes involved in molluscan biomineralisation are beginning to be identified, there is little understanding of how these are developmentally regulated, or if the same genes are operational at different stages of the mollusc's life. Results: Here we relate the developmental expression of nine genes in the tissue responsible for shell production the mantle to ecological transitions that occur during the lifetime of the tropical abalone Haliotis asinina (Vetigastropoda). Four of these genes encode evolutionarily ancient proteins, while four others encode secreted proteins with little or no identity to known proteins. Another gene has been previously described from the mantle of another haliotid vetigastropod. All nine genes display dynamic spatial and temporal expression profiles within the larval shell field and juvenile mantle. Conclusion: These expression data reflect the regulatory complexity that underlies molluscan shell construction from larval stages to adulthood, and serves to highlight the different ecological demands placed on each stage. The use of both ancient and novel genes in all stages of shell construction also suggest that a core set of shell-making genes was provided by a shared metazoan ancestor, which has been elaborated upon to produce the range of molluscan shell types we see today."],["dc.format.mimetype","application/pdf"],["dc.identifier.ppn","55980959X"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/4371"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61101"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","576"],["dc.title","Dynamic expression of ancient and novel molluscan shell genes during ecological transitions"],["dc.title.alternative","Research article"],["dc.title.subtitle","Research article"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","54"],["dc.bibliographiccitation.journal","Proteome Science"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Marie, Benjamin"],["dc.contributor.author","Marie, Arul"],["dc.contributor.author","Jackson, Daniel John"],["dc.contributor.author","Dubost, Lionel"],["dc.contributor.author","Degnan, Bernard M."],["dc.contributor.author","Milet, Christian"],["dc.contributor.author","Marin, Frederic"],["dc.date.accessioned","2018-11-07T08:37:05Z"],["dc.date.available","2018-11-07T08:37:05Z"],["dc.date.issued","2010"],["dc.description.abstract","Background: The formation of the molluscan shell is regulated to a large extent by a matrix of extracellular macromolecules that are secreted by the shell forming tissue, the mantle. This so called \"calcifying matrix\" is a complex mixture of proteins and glycoproteins that is assembled and occluded within the mineral phase during the calcification process. While the importance of the calcifying matrix to shell formation has long been appreciated, most of its protein components remain uncharacterised. Results: Recent expressed sequence tag (EST) investigations of the mantle tissue from the tropical abalone (Haliotis asinina) provide an opportunity to further characterise the proteins in the shell by a proteomic approach. In this study, we have identified a total of 14 proteins from distinct calcified layers of the shell. Only two of these proteins have been previously characterised from abalone shells. Among the novel proteins are several glutamine-and methionine-rich motifs and hydrophobic glycine-, alanine-and acidic aspartate-rich domains. In addition, two of the new proteins contained Kunitz-like and WAP (whey acidic protein) protease inhibitor domains. Conclusion: This is one of the first comprehensive proteomic study of a molluscan shell, and should provide a platform for further characterization of matrix protein functions and interactions."],["dc.identifier.doi","10.1186/1477-5956-8-54"],["dc.identifier.isi","000284483200001"],["dc.identifier.pmid","21050442"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5735"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18450"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Biomed Central Ltd"],["dc.relation.issn","1477-5956"],["dc.rights","CC BY 2.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.0"],["dc.title","Proteomic analysis of the organic matrix of the abalone Haliotis asinina calcified shell"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","2"],["dc.bibliographiccitation.journal","Frontiers in Zoology"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Jackson, Daniel John"],["dc.contributor.author","Degnan, Sandie M."],["dc.contributor.author","Degnan, Bernard M."],["dc.date.accessioned","2018-11-07T09:13:24Z"],["dc.date.available","2018-11-07T09:13:24Z"],["dc.date.issued","2012"],["dc.description.abstract","Introduction: Inter-specific comparisons of metazoan developmental mechanisms have provided a wealth of data concerning the evolution of body form and the generation of morphological novelty. Conversely, studies of intra-specific variation in developmental programs are far fewer. Variation in the rate of development may be an advantage to the many marine invertebrates that posses a biphasic life cycle, where fitness commonly requires the recruitment of planktonically dispersing larvae to patchily distributed benthic environments. Results: We have characterised differences in the rate of development between individuals originating from a synchronised fertilisation event in the tropical abalone Haliotis asinina, a broadcast spawning lecithotrophic vetigastropod. We observed significant differences in the time taken to complete early developmental events (time taken to complete third cleavage and to hatch from the vitelline envelope), mid-larval events (variation in larval shell development) and late larval events (the acquisition of competence to respond to a metamorphosis inducing cue). We also provide estimates of the variation in maternally provided energy reserves that suggest maternal provisioning is unlikely to explain the majority of the variation in developmental rate we report here. Conclusions: Significant differences in the rates of development exist both within and between cohorts of synchronously fertilised H. asinina gametes. These differences can be detected shortly after fertilisation and generate larvae of increasingly divergent development states. We discuss the significance of our results within an ecological context, the adaptive significance of mechanisms that might maintain this variation, and potential sources of this variation."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2012"],["dc.identifier.doi","10.1186/1742-9994-9-2"],["dc.identifier.isi","000302057900001"],["dc.identifier.pmid","22339806"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7407"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/27165"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Biomed Central Ltd"],["dc.relation.issn","1742-9994"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","CC BY 2.0"],["dc.rights.uri","http://creativecommons.org/licenses/by/2.0"],["dc.title","Variation in rates of early development in Haliotis asinina generate competent larvae of different ages"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","23"],["dc.bibliographiccitation.journal","Frontiers in Zoology"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","Kocot, Kevin M."],["dc.contributor.author","Aguilera, Felipe"],["dc.contributor.author","McDougall, Carmel"],["dc.contributor.author","Jackson, Daniel John"],["dc.contributor.author","Degnan, Bernard M."],["dc.date.accessioned","2018-11-07T10:12:53Z"],["dc.date.available","2018-11-07T10:12:53Z"],["dc.date.issued","2016"],["dc.description.abstract","An external skeleton is an essential part of the body plan of many animals and is thought to be one of the key factors that enabled the great expansion in animal diversity and disparity during the Cambrian explosion. Molluscs are considered ideal to study the evolution of biomineralization because of their diversity of highly complex, robust and patterned shells. The molluscan shell forms externally at the interface of animal and environment, and involves controlled deposition of calcium carbonate within a framework of macromolecules that are secreted from the dorsal mantle epithelium. Despite its deep conservation within Mollusca, the mantle is capable of producing an incredible diversity of shell patterns, and macro- and micro-architectures. Here we review recent developments within the field of molluscan biomineralization, focusing on the genes expressed in the mantle that encode secreted proteins. The so-called mantle secretome appears to regulate shell deposition and patterning and in some cases becomes part of the shell matrix. Recent transcriptomic and proteomic studies have revealed marked differences in the mantle secretomes of even closely-related molluscs; these typically exceed expected differences based on characteristics of the external shell. All mantle secretomes surveyed to date include novel genes encoding lineage-restricted proteins and unique combinations of co-opted ancient genes. A surprisingly large proportion of both ancient and novel secreted proteins containing simple repetitive motifs or domains that are often modular in construction. These repetitive low complexity domains (RLCDs) appear to further promote the evolvability of the mantle secretome, resulting in domain shuffling, expansion and loss. RLCD families further evolve via slippage and other mechanisms associated with repetitive sequences. As analogous types of secreted proteins are expressed in biomineralizing tissues in other animals, insights into the evolution of the genes underlying molluscan shell formation may be applied more broadly to understanding the evolution of metazoan biomineralization."],["dc.identifier.doi","10.1186/s12983-016-0155-z"],["dc.identifier.isi","000377579000001"],["dc.identifier.pmid","27279892"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13529"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40323"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Biomed Central Ltd"],["dc.relation.issn","1742-9994"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Sea shell diversity and rapidly evolving secretomes: insights into the evolution of biomineralization"],["dc.type","review"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","40"],["dc.bibliographiccitation.journal","BMC Biology"],["dc.bibliographiccitation.volume","4"],["dc.contributor.author","Jackson, Daniel John"],["dc.contributor.author","McDougall, Carmel"],["dc.contributor.author","Green, Kathryn"],["dc.contributor.author","Simpson, Fiona"],["dc.contributor.author","Woerheide, Gert"],["dc.contributor.author","Degnan, Bernard M."],["dc.date.accessioned","2018-11-07T08:57:07Z"],["dc.date.available","2018-11-07T08:57:07Z"],["dc.date.issued","2006"],["dc.description.abstract","Background: Instructions to fabricate mineralized structures with distinct nanoscale architectures, such as seashells and coral and vertebrate skeletons, are encoded in the genomes of a wide variety of animals. In mollusks, the mantle is responsible for the extracellular production of the shell, directing the ordered biomineralization of CaCO3 and the deposition of architectural and color patterns. The evolutionary origins of the ability to synthesize calcified structures across various metazoan taxa remain obscure, with only a small number of protein families identified from molluskan shells. The recent sequencing of a wide range of metazoan genomes coupled with the analysis of gene expression in non-model animals has allowed us to investigate the evolution and process of biomineralization in gastropod mollusks. Results: Here we show that over 25% of the genes expressed in the mantle of the vetigastropod Haliotis asinina encode secreted proteins, indicating that hundreds of proteins are likely to be contributing to shell fabrication and patterning. Almost 85% of the secretome encodes novel proteins; remarkably, only 19% of these have identifiable homologues in the full genome of the patellogastropod Lottia scutum. The spatial expression profiles of mantle genes that belong to the secretome is restricted to discrete mantle zones, with each zone responsible for the fabrication of one of the structural layers of the shell. Patterned expression of a subset of genes along the length of the mantle is indicative of roles in shell ornamentation. For example, Has-sometsuke maps precisely to pigmentation patterns in the shell, providing the first case of a gene product to be involved in molluskan shell pigmentation. We also describe the expression of two novel genes involved in nacre (mother of pearl) deposition. Conclusion: The unexpected complexity and evolvability of this secretome and the modular design of the molluskan mantle enables diversification of shell strength and design, and as such must contribute to the variety of adaptive architectures and colors found in mollusk shells. The composition of this novel mantle-specific secretome suggests that there are significant molecular differences in the ways in which gastropods synthesize their shells."],["dc.identifier.doi","10.1186/1741-7007-4-40"],["dc.identifier.isi","000243654800001"],["dc.identifier.pmid","17121673"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/2204"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23313"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Biomed Central Ltd"],["dc.relation.issn","1741-7007"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","A rapidly evolving secretome builds and patterns a sea shell"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]