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15 results for “Strongylocentrotus purpuratus”
Data for: Tube feet regeneration and plasticity in the purple sea urchin (Strongylocentrotus purpuratus)
<p class="MsoBodyText">Sea urchins are key members of hydrodynamically intense habitats, such as open coast intertidal and shallow reefs. Secure attachment to the substrata, by means of tube feet and spines, is essential for survival. Previous studies suggest that environmental variables (i.e. hydrodynamics, substrate) can influence the morphology and adhesive performance of tube feet. Catastrophic failure of tube feet occurs often due to strong hydrodynamic forces. The time and ability of amputated tube feet to return to pre-amputation adhesive performance, and the interaction with environmental factors are unknown. To assess the dynamics of adhesive performance and re- generation of tube feet, we 1) evaluated phenotypic plasticity of disc surface area of two urchin populations inhabiting sites with different lithologies (field - in-situ conditions) and, 2) assessed regeneration of their functionality (tube foot length, time of disc first appearance, disc surface area, and tenacity) after amputation (laboratory - ex-situ conditions). Results showed that in the field, tube feet are plastic in their phenotype: sea urchins from the two sites differed in their disc surface area. Plasticity was also observed in the laboratory, where urchins regenerate tube feet that are shorter in length and have smaller discs compared to pre-amputation measurements. Thus, sea urchin tube feet recovering from amputation events in the intertidal may differ in their initial morphology and in the recovery period after amputation. Moreover, tube feet that were never amputated also decreased their disc area, suggesting that plasticity occurs on tube feet of urchins maintained in laboratory conditions. In shallow temperate reef systems, urchins are ecosystem engineers that affect the abundance and distribution of many other organisms. The plastic nature of morphological and adhesive abilities of sea urchin tube feet influences their ability to survive and dominate wave-battered habitats.</p>
Data for: Tube feet regeneration and plasticity in the purple sea urchin (Strongylocentrotus purpuratus)
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Variation in purple sea urchin (Strongylocentrotus purpuratus) morphological traits in relation to resource availability
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Bacterial exposure mediates developmental plasticity and resistance to lethal Vibrio lentus Infection in purple sea urchin (Strongylocentrotus purpuratus) larvae
<p>Exposure to and colonization by bacteria during development have wide-ranging beneficial effects on animal biology but can also inhibit growth or cause disease. The immune system is the prime mediator of these microbial interactions and is itself shaped by them. Studies using diverse animal taxa have begun to elucidate the mechanisms underlying the acquisition and transmission of bacterial symbionts and their interactions with developing immune systems. Moreover, the contexts of these associations are often confounded by stark differences between 'wild type' microbiota and the bacterial communities associated with animals raised in conventional or germ-free laboratories. In this study, we investigate the spatio-temporal kinetics of bacterial colonization and associated effects on growth and immune function in larvae of the purple sea urchin (Strongylocentrotus purpuratus) as a model for host-microbe interactions and immune system development. We also compare the host-associated microbiota of developing embryos and larvae raised in natural seawater or exposed to adult-associated bacteria in the laboratory. Bacteria associated with zygotes, embryos, and early larvae are detectable with 16S amplicon sequencing, but 16S-FISH indicates that the vast majority of larval bacterial load is acquired after feeding begins and is localized to the gut lumen. The bacterial communities of laboratory-cultured embryos are significantly less diverse than the natural microbiota but recapitulate its major components (Alphaproteobacteria, Gammaproteobacteria, and Bacteroidetes), suggesting that biologically relevant host-microbe interactions can be studied in the laboratory. We also demonstrate that bacterial exposure in early development induces changes in morphology and in the immune system. In the absence of bacteria, larvae grow larger at the 4-arm stage. Additionally, bacteria-exposed larvae are significantly more resistant to lethal infection with the larva-associated pathogen Vibrio lentus suggesting that early exposure to high levels of microbes, as would be expected in natural conditions, affects the immune state in later larvae. These results expand our knowledge of microbial influences on early sea urchin development and establish a model in which to study the interactions between the developing larval immune system and the acquisition of larval microbiota.</p>
Bacterial exposure mediates developmental plasticity and resistance to lethal Vibrio lentus Infection in purple sea urchin (Strongylocentrotus purpuratus) larvae
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Base-resolution DNA hydroxymethylation maps of purple sea urchin (Strongylocentrotus purpuratus), european lancelet (Branchiostoma lanceolatum) and zebrafish (Danio rerio) using ACE-seq
GEO Series GSE188331. Branchiostoma lanceolatum; Danio rerio; Strongylocentrotus purpuratus. 15 samples. Type: Other.
Synergistic effects of temperature and pCO2 on growth, development and gene expression of Strongylocentrotus purpuratus larvae
GEO Series GSE39125. Strongylocentrotus purpuratus. 12 samples. Type: Expression profiling by array.
Base-resolution DNA methylation maps of purple sea urchin (Strongylocentrotus purpuratus)
GEO Series GSE188333. Strongylocentrotus purpuratus. 8 samples. Type: Methylation profiling by high throughput sequencing.
Strongylocentrotus purpuratus high resolution developmental transcriptomic time-course
GEO Series GSE70372. Strongylocentrotus purpuratus. 165 samples. Type: Expression profiling by high throughput sequencing.
DNA hydroxymethylation profiling of purple sea urchin (Strongylocentrotus purpuratus), european lancelet (Branchiostoma lanceolatum) and zebrafish (Danio rerio) using hMeDIP-seq
GEO Series GSE188332. Danio rerio; Strongylocentrotus purpuratus; Branchiostoma lanceolatum. 8 samples. Type: Methylation profiling by high throughput sequencing.
Single-cell RNA sequencing of the Strongylocentrotus purpuratus larva reveals the blueprint of major cell types and nervous system of a non-chordate deuterostome
GEO Series GSE241045. Strongylocentrotus purpuratus. 6 samples. Type: Expression profiling by high throughput sequencing.
Response to elevated pCO2 in Strongylocentrotus purpuratus larvae
GEO Series GSE37522. Strongylocentrotus purpuratus. 24 samples. Type: Expression profiling by array.
Gene expression in tissues from an immune challenged adult sea urchin (Strongylocentrotus purpuratus)
GEO Series GSE97448. Strongylocentrotus purpuratus. 2 samples. Type: Expression profiling by high throughput sequencing.
Nucleosome positioning and sensitivity suggest novel functional organization of the purple sea urchin (Strongylocentrotus purpuratus) genome
GEO Series GSE283453. Strongylocentrotus purpuratus. 9 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
Widespread priming of transcriptional regulatory elements by incipient accessibility or Pol II pause in early embryos of the sea urchin Strongylocentrotus purpuratus
GEO Series GSE234143. Strongylocentrotus purpuratus. 32 samples. Type: Genome binding/occupancy profiling by high throughput sequencing; Other; Third-party reanalysis.
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