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Origin of the Phaenonotum in the Greater Antilles

ABSTRACT: We provide a detailed systematics account of the Caribbean species, including description of three new ones, and on their example we are demonstrating that combination of morphological and molecular data is necessary to deal with the species-level systematics of the genus.

PROVIDER: PRJEB22385 | ENA |

REPOSITORIES: ENA

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Origin of the Phaenonotum in the Greater Antilles

Project description:We provide a detailed systematics account of the Caribbean species, including description of three new ones, and on their example we are demonstrating that combination of morphological and molecular data is necessary to deal with the species-level systematics of the genus.

| PRJEB22382 | ENA

Origin of the Phaenonotum in the Greater Antilles

| PRJEB22385 | ENA

Qualitative and quantitative analysis of Bothrops jararaca venom gland proteome

Project description:While cellular transcripts encode rich information that provide key features to understand the molecular basis of snake venom variation, their presence/ abundance does not necessary imply/correlate in the translation of a functional (protein) product. In this study we carried out an analysis of the venom gland proteome of Bothrops jararaca taking into account two distinct phases of its ontogenetic development (i.e. newborn and adult specimens) and the marked sexual dimorphism recently reported on its venom proteome. Proteomic data analysis showed wider dynamic range for toxins when comparing to non-toxins and a dynamic proteome rearrangement in cellular proteins upon B. jararaca development. Differentially expressed proteins covered a number of biological pathways related to protein synthesis, including proteins related to transcription and translation, which were found to be significantly higher expressed in the newborn venom gland. Our results showed that the variation in the expression levels of cellular proteins gives rise to an even higher variation in the dynamic range of the expressed toxins. Upon ageing, the molecular constraints related to protein synthesis together with ecological traits would likely have an impact on the toxin repertoire, which, in the case of B. jararaca species, would enable the species to deal with different prey types during its lifespan.

2016-09-28 | PXD004186 | Pride

Sloth collagen phylogenetics - The living tree sloths Choloepus and Bradypus are the only remaining members of Folivora, a major xenarthran radiation that occupied a wide range of habitats in many parts of the western hemisphere during the Cenozoic, including both continents and the West Indies (Antilles)

Project description:The living tree sloths Choloepus and Bradypus are the only remaining members of Folivora, a major xenarthran radiation that occupied a wide range of habitats in many parts of the western hemisphere during the Cenozoic, including both continents and the West Indies (Antilles). To date, molecular evidence has played only a minor role in folivoran systematics, as most recently-extinct species lived in places not conducive to DNA preservation. Here we utilize collagen sequence information to assess the relationships of tree sloths to a large sample (13 species) of extinct Quaternary folivorans.

2019-06-07 | PXD012859 | Pride

MULTIPLE ORIGIN OF THE PHAENONOTUM BEETLES IN THE GREATER ANTILLES

Project description:Multiple origin of the Phaenonotum beetles in the Greater Antilles (Coleoptera: Hydrophilidae): phylogeny, biogeography and systematics

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Arabidopsis thaliana

Project description:Evaluation of the performance of the Arabidopsis Pathoarray 464_001: an example of detailed analysis of mutants

| PRJNA96315 | ENA

Vibrio

Project description:Vibrionaceae systematics

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Aculeata

Project description:Aculeate systematics

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Genome-wide analysis of desiccation tolerance-related genes in Arabidopsis seeds

Project description:The combination of robust physiological models with “omics” studies holds promise for the discovery of genes and pathways linked to how organisms deal with drying. Here we used a transcriptomics approach in combination with an in vivo physiological model of re-establishment of desiccation tolerance (DT) in Arabidopsis thaliana seeds. We show that the incubation of desiccation-sensitive (DS) germinated Arabidopsis seeds in a polyethylene glycol (PEG) solution re-induces the mechanisms necessary for expression of DT. Based on a SNP-tile array gene expression profile, our data indicates that the re-establishment of DT, in this system, is related to a programmed reversion from a metabolic active to a quiescent state similar to prior to germination. Our findings show that transcripts of germinated seeds after the PEG treatment are dominated by those encoding LEA, seed storage and dormancy-related proteins. On the other hand, a massive repression of genes belonging to many other classes such as photosynthesis, cell wall modification and energy metabolism occurs in parallel. Furthermore, comparison with a similar system for Medicago truncatula reveals a significant overlap between the two transcriptomes. Such overlap may highlight core mechanisms and key regulators of the trait DT. Taking into account the availability of the many genetic and molecular resources for Arabidopsis, the described system may prove useful for unraveling DT in higher plants. Desiccation-sensitive seeds vs. desiccation-tolerant seeds in the same developmental stage in triplicate.

2013-06-21 | E-GEOD-30853 | biostudies-arrayexpress

Project description:Giraffe example datasets

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