journal
MENU ▼
Read by QxMD icon Read
search

EvoDevo

journal
https://www.readbyqxmd.com/read/29760875/glycogen-synthase-kinase-3-promotes-multicellular-development-over-unicellular-encystation-in-encysting-dictyostelia
#1
Yoshinori Kawabe, Takahiro Morio, Yoshimasa Tanaka, Pauline Schaap
Background: Glycogen synthase kinase 3 (GSK3) regulates many cell fate decisions in animal development. In multicellular structures of the group 4 dictyostelid Dictyostelium discoideum , GSK3 promotes spore over stalk-like differentiation. We investigated whether, similar to other sporulation-inducing genes such as cAMP-dependent protein kinase (PKA), this role of GSK3 is derived from an ancestral role in encystation of unicellular amoebas. Results: We deleted GSK3 in Polysphondylium pallidum , a group 2 dictyostelid which has retained encystation as an alternative survival strategy...
2018: EvoDevo
https://www.readbyqxmd.com/read/29721256/the-role-of-retinoic-acid-signaling-in-starfish-metamorphosis
#2
Shumpei Yamakawa, Yoshiaki Morino, Masanao Honda, Hiroshi Wada
Background: Although retinoic acid (RA) signaling plays a crucial role in the body patterning of chordates, its function in non-chordate invertebrates, other than its mediation of environmental cues triggering metamorphosis in cnidarians, is largely unknown. We investigated the role of RA signaling in the metamorphosis of starfish (Echinodermata). Results: We found that exogenous RA treatment induced metamorphosis in starfish larvae. In contrast, inhibitors of RA synthesis and RA receptors suppressed metamorphosis triggered by attachment to a substrate...
2018: EvoDevo
https://www.readbyqxmd.com/read/29719716/expression-of-meis-and-hoxa11-in-dipnoan-and-teleost-fins-provides-new-insights-into-the-evolution-of-vertebrate-appendages
#3
Fernanda Langellotto, Maria Fiorentino, Elena De Felice, Luigi Caputi, Valeria Nittoli, Jean M P Joss, Paolo Sordino
Background: The concerted activity of Meis and Hoxa11 transcription factors is essential for the subdivision of tetrapod limbs into proximo-distal (PD) domains; however, little is know about the evolution of this patterning mechanism. Here, we aim to study the expression of meis and hoxa11 orthologues in the median and paired rayed fins of zebrafish and in the lobed fins of the Australian lungfish. Results: First, a late phase of expression of meis1.1 and hoxa11b in zebrafish dorsal and anal fins relates with segmentation of endochondral elements in proximal and distal radials...
2018: EvoDevo
https://www.readbyqxmd.com/read/29644029/molecular-phylogenetic-and-developmental-analyses-of-sall-proteins-in-bilaterians
#4
José Lorente-Sorolla, Marta Truchado-Garcia, Kimberly J Perry, Jonathan Q Henry, Cristina Grande
Background: Sall (Spalt-like) proteins are zinc-finger transcription factors involved in a number of biological processes. They have only been studied in a few model organisms, such as Drosophila melanogaster , Caenorhabditis elegans , Schmidtea mediterranea and some vertebrates. Further taxon sampling is critical to understand the evolution and diversification of this protein and its functional roles in animals. Results: Using genome and transcriptome mining, we confirmed the presence of sall genes in a range of additional animal taxa, for which their presence had not yet been described...
2018: EvoDevo
https://www.readbyqxmd.com/read/29610658/characterization-of-the-bhlh-family-of-transcriptional-regulators-in-the-acoel-s-roscoffensis-and-their-putative-role-in-neurogenesis
#5
E Perea-Atienza, S G Sprecher, P Martínez
Background: The basic helix-loop-helix (bHLH) family of transcription factors is one of the largest superfamilies of regulatory transcription factors and is widely used in eukaryotic organisms. They play an essential role in a range of metabolic, physiological, and developmental processes, including the development of the nervous system (NS). These transcription factors have been studied in many metazoans, especially in vertebrates but also in early branching metazoan clades such as the cnidarians and sponges...
2018: EvoDevo
https://www.readbyqxmd.com/read/29568479/embryonic-lethality-is-not-sufficient-to-explain-hourglass-like-conservation-of-vertebrate-embryos
#6
Yui Uchida, Masahiro Uesaka, Takayoshi Yamamoto, Hiroyuki Takeda, Naoki Irie
Background: Understanding the general trends in developmental changes during animal evolution, which are often associated with morphological diversification, has long been a central issue in evolutionary developmental biology. Recent comparative transcriptomic studies revealed that gene expression profiles of mid-embryonic period tend to be more evolutionarily conserved than those in earlier or later periods. While the hourglass-like divergence of developmental processes has been demonstrated in a variety of animal groups such as vertebrates, arthropods, and nematodes, the exact mechanism leading to this mid-embryonic conservation remains to be clarified...
2018: EvoDevo
https://www.readbyqxmd.com/read/29479412/amphioxus-motion-detection-and-the-evolutionary-origin-of-the-vertebrate-retinotectal-map
#7
Thurston Lacalli
The axonal projection from the retina to the optic tectum maps visual information isomorphically from one to the other and serves as a model for the development of sensory maps more generally in the vertebrate brain. How or why this connection evolved is not known, nor why the midbrain is so important to the processing of visual information. Amphioxus is potentially informative here because its eye homolog, the frontal eye, also has a neural connection to a region of the brain now known to be homologous with the caudal diencephalon and midbrain...
2018: EvoDevo
https://www.readbyqxmd.com/read/29479411/-soxb2-in-sea-urchin-development-implications-in-neurogenesis-ciliogenesis-and-skeletal-patterning
#8
Evgeniya Anishchenko, Maria Ina Arnone, Salvatore D'Aniello
Background: Current studies in evolutionary developmental biology are focused on the reconstruction of gene regulatory networks in target animal species. From decades, the scientific interest on genetic mechanisms orchestrating embryos development has been increasing in consequence to the fact that common features shared by evolutionarily distant phyla are being clarified. In 2011, a study across eumetazoan species showed for the first time the existence of a highly conserved non-coding element controlling the SoxB2 gene, which is involved in the early specification of the nervous system...
2018: EvoDevo
https://www.readbyqxmd.com/read/29423139/divergent-axial-morphogenesis-and-early-shh-expression-in-vertebrate-prospective-floor-plate
#9
Stanislav Kremnyov, Kristine Henningfeld, Christoph Viebahn, Nikoloz Tsikolia
Background: The notochord has organizer properties and is required for floor plate induction and dorsoventral patterning of the neural tube. This activity has been attributed to sonic hedgehog (shh) signaling, which originates in the notochord, forms a gradient, and autoinduces shh expression in the floor plate. However, reported data are inconsistent and the spatiotemporal development of the relevant shh expression domains has not been studied in detail. We therefore studied the expression dynamics of shh in rabbit, chicken and Xenopus laevis embryos (as well as indian hedgehog and desert hedgehog as possible alternative functional candidates in the chicken)...
2018: EvoDevo
https://www.readbyqxmd.com/read/29423138/developmental-constraint-through-negative-pleiotropy-in-the-zygomatic-arch
#10
Christopher J Percival, Rebecca Green, Charles C Roseman, Daniel M Gatti, Judith L Morgan, Stephen A Murray, Leah Rae Donahue, Jessica M Mayeux, K Michael Pollard, Kunjie Hua, Daniel Pomp, Ralph Marcucio, Benedikt Hallgrímsson
Background: Previous analysis suggested that the relative contribution of individual bones to regional skull lengths differ between inbred mouse strains. If the negative correlation of adjacent bone lengths is associated with genetic variation in a heterogeneous population, it would be an example of negative pleiotropy, which occurs when a genetic factor leads to opposite effects in two phenotypes. Confirming negative pleiotropy and determining its basis may reveal important information about the maintenance of overall skull integration and developmental constraint on skull morphology...
2018: EvoDevo
https://www.readbyqxmd.com/read/29423137/mouse-obox-and-crxos-modulate-preimplantation-transcriptional-profiles-revealing-similarity-between-paralogous-mouse-and-human-homeobox-genes
#11
Amy H Royall, Ignacio Maeso, Thomas L Dunwell, Peter W H Holland
Background: ETCHbox genes are eutherian-specific homeobox genes expressed during preimplantation development at a time when the first cell lineage decisions are being made. The mouse has an unusual repertoire of ETCHbox genes with several gene families lost in evolution and the remaining two, Crxos and Obox , greatly divergent in sequence and number. Each has undergone duplication to give a double homeodomain Crxos locus and a large cluster of over 60 Obox loci. The gene content differences between species raise important questions about how evolution can tolerate loss of genes implicated in key developmental events...
2018: EvoDevo
https://www.readbyqxmd.com/read/29387332/a-novel-gene-s-role-in-an-ancient-mechanism-secreted-frizzled-related-protein-1-is-a-critical-component-in-the-anterior-posterior-wnt-signaling-network-that-governs-the-establishment-of-the-anterior-neuroectoderm-in-sea-urchin-embryos
#12
Anita Khadka, Marina Martínez-Bartolomé, Stephanie D Burr, Ryan C Range
The anterior neuroectoderm (ANE) in many deuterostome embryos (echinoderms, hemichordates, urochordates, cephalochordates, and vertebrates) is progressively restricted along the anterior-posterior axis to a domain around the anterior pole. In the sea urchin embryo, three integrated Wnt signaling branches (Wnt/β-catenin, Wnt/JNK, and Wnt/PKC) govern this progressive restriction process, which begins around the 32- to 60-cell stage and terminates by the early gastrula stage. We previously have established that several secreted Wnt modulators of the Dickkopf and secreted Frizzled-related protein families (Dkk1, Dkk3, and sFRP-1/5) are expressed within the ANE and play important roles in modulating the Wnt signaling network during this process...
2018: EvoDevo
https://www.readbyqxmd.com/read/29225770/sex-determination-mode-does-not-affect-body-or-genital-development-of-the-central-bearded-dragon-pogona-vitticeps
#13
Sarah L Whiteley, Clare E Holleley, Wendy A Ruscoe, Meghan Castelli, Darryl L Whitehead, Juan Lei, Arthur Georges, Vera Weisbecker
Background: The development of male- or female-specific phenotypes in squamates is typically controlled by either temperature-dependent sex determination (TSD) or chromosome-based genetic sex determination (GSD). However, while sex determination is a major switch in individual phenotypic development, it is unknownhow evolutionary transitions between GSD and TSD might impact on the evolution of squamate phenotypes, particularly the fast-evolving and diverse genitalia. Here, we take the unique opportunity of studying the impact of both sex determination mechanisms on the embryological development of the central bearded dragon ( Pogona vitticeps )...
2017: EvoDevo
https://www.readbyqxmd.com/read/29214009/the-role-of-hoxa11-and-hoxa13-in-the-evolution-of-novel-fin-morphologies-in-a-representative-batoid-leucoraja-erinacea
#14
Shannon N Barry, Karen D Crow
Background: Batoids exhibit unique body plans with derived fin morphologies, such as the anteriorly expanded pectoral fins that fuse to the head, or distally extended anterior pelvic fin lobes used for a modified swimming technique utilized by skates (Rajidae). The little skate ( Leucoraja erinacea ), exhibits both of these unique fin morphologies. These fin modifications are not present in a typical shark body plan, and little is known regarding the mechanisms underlying their development...
2017: EvoDevo
https://www.readbyqxmd.com/read/29214008/comparing-growth-in-surface-and-cave-morphs-of-the-species-astyanax-mexicanus-insights-from-scales
#15
Victor Simon, Romain Elleboode, Kélig Mahé, Laurent Legendre, Patricia Ornelas-Garcia, Luis Espinasa, Sylvie Rétaux
Background: Life in the darkness of caves is accompanied, throughout phyla, by striking phenotypic changes including the loss or severe reduction in eyes and pigmentation. On the other hand, cave animals have undergone constructive changes, thought to be adaptive, to survive in this extreme environment. The present study addresses the question of the evolution of growth in caves, taking advantage of the comparison between the river-dwelling and the cave-dwelling morphs of the Mexican tetra, Astyanax mexicanus ...
2017: EvoDevo
https://www.readbyqxmd.com/read/29209492/-aquilegia-b-gene-homologs-promote-petaloidy-of-the-sepals-and-maintenance-of-the-c-domain-boundary
#16
Bharti Sharma, Elena M Kramer
The model Aquilegia coerulea x "Origami" possesses several interesting floral features, including petaloid sepals that are morphologically distinct from the true petals and a broad domain containing many whorls of stamens. We undertook the current study in an effort to understand the former trait, but additionally uncovered data that inform on the latter. The Aquilegia B gene homolog AqPI is shown to contribute to the production of anthocyanin in the first whorl sepals, although it has no major role in their morphology...
2017: EvoDevo
https://www.readbyqxmd.com/read/29201343/the-evolutionary-origin-of-digit-patterning
#17
REVIEW
Thomas A Stewart, Ramray Bhat, Stuart A Newman
The evolution of tetrapod limbs from paired fins has long been of interest to both evolutionary and developmental biologists. Several recent investigative tracks have converged to restructure hypotheses in this area. First, there is now general agreement that the limb skeleton is patterned by one or more Turing-type reaction-diffusion, or reaction-diffusion-adhesion, mechanism that involves the dynamical breaking of spatial symmetry. Second, experimental studies in finned vertebrates, such as catshark and zebrafish, have disclosed unexpected correspondence between the development of digits and the development of both the endoskeleton and the dermal skeleton of fins...
2017: EvoDevo
https://www.readbyqxmd.com/read/29158889/non-canonical-dorsoventral-patterning-in-the-moth-midge-clogmia-albipunctata
#18
Karl R Wotton, Anna Alcaine-Colet, Johannes Jaeger, Eva Jiménez-Guri
Background: Bone morphogenetic proteins (BMPs) are of central importance for dorsal-ventral (DV) axis specification. They are core components of a signalling cascade that includes the BMP ligand decapentaplegic (DPP) and its antagonist short gastrulation (SOG) in Drosophila melanogaster . These components are very ancient, with orthologs involved in DV patterning in both protostomes and deuterostomes. Despite such strong conservation, recent comparative work in insects has revealed interesting differences in the way the patterning function of the DV system is achieved in different species...
2017: EvoDevo
https://www.readbyqxmd.com/read/29090082/the-trochoblasts-in-the-pilidium-larva-break-an-ancient-spiralian-constraint-to-enable-continuous-larval-growth-and-maximally-indirect-development
#19
George von Dassow, Svetlana A Maslakova
BACKGROUND: Nemertean embryos undergo equal spiral cleavage, and prior fate-mapping studies showed that some also exhibit key aspects of spiralian lineage-based fate specification, including specification of the primary trochoblasts, which differentiate early as the core of the prototroch of the spiralian trochophore larva. Yet it remains unclear how the nemertean pilidium larva, a long-lived planktotroph that grows substantially as it builds a juvenile body from isolated rudiments, develops within the constraints of spiral cleavage...
2017: EvoDevo
https://www.readbyqxmd.com/read/29075435/formation-and-subdivision-of-the-head-field-in-the-centipede-strigamia-maritima-as-revealed-by-the-expression-of-head-gap-gene-orthologues-and-hedgehog-dynamics
#20
Vera S Hunnekuhl, Michael Akam
BACKGROUND: There have been few studies of head patterning in non-insect arthropods, and even in the insects, much is not yet understood. In the fly Drosophila three head gap genes, orthodenticle ( otd ), buttonhead ( btd ) and empty spiracles ( ems ) are essential for patterning the head. However, they do not act through the same pair-rule genes that pattern the trunk from the mandibular segment backwards. Instead they act through the downstream factors collier ( col ) and cap ' n ' collar ( cnc ), and presumably other unknown factors...
2017: EvoDevo
journal
journal
42912
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"