Results 21 to 30 of about 10,332 (207)

Investigating temporal stereotypy in ascidian embryos development

open access: yes
Developmental biology explores the mechanisms of embryo formation and development. Here, we focus on ascidian embryo development, which is highly stereotyped, allowing the identification of homologous cells across embryos and thereby enabling the ...
Lemaire, Patrick   +4 more
core   +7 more sources

Vasopressin Promoter Transgenic and Vasopressin Gene-Edited Ascidian, Ciona intestinalis Type A (Ciona robusta): Innervation, Gene Expression Profiles, and Phenotypes

open access: yesFrontiers in Endocrinology, 2021
Oxytocin (OT) and vasopressin (VP) superfamily neuropeptides are distributed in not only vertebrates but also diverse invertebrates. However, no VPergic innervation of invertebrates has ever been documented.
Tsuyoshi Kawada   +6 more
doaj   +1 more source

The invariant cleavage pattern displayed by ascidian embryos depends on spindle positioning along the cell's longest axis in the apical plane and relies on asynchronous cell divisions

open access: yeseLife, 2017
The ascidian embryo is an ideal system to investigate how cell position is determined during embryogenesis. Using 3D timelapse imaging and computational methods we analyzed the planar cell divisions in ascidian early embryos and found that spindles in ...
Rémi Dumollard   +7 more
doaj   +1 more source

Seasonal dynamics and starvation impact on the gut microbiome of urochordate ascidian Halocynthia roretzi

open access: yesAnimal Microbiome, 2020
Background Gut microbiota plays important roles in host animal metabolism, homeostasis and environmental adaptation. However, the interplay between the gut microbiome and urochordate ascidian, the most closet relative of vertebrate, remains less explored.
Jiankai Wei   +6 more
doaj   +1 more source

Mitochondrial respiration and Ca2+ waves are linked during fertilization and meiosis completion [PDF]

open access: yes, 2003
Fertilization increases both cytosolic Ca(2+) concentration and oxygen consumption in the egg but the relationship between these two phenomena remains largely obscure.
Smith, Peter J.   +9 more
core   +1 more source

CHARACTERISTIC DISTRIBUTION DENSITY OF ORGANELLES IN THE CYTOPLASM OF RESPECTIVE KINDS OF CELL LINEAGES OF ASCIDIAN EMBRYOS [PDF]

open access: yes, 1986
In the early embryos of the ascidian (Halocynthia roretzi), regional cytoplasmic differences arise just after fertilization. We successively studied the characteristic features of the cytoplasm of those regions in the embryonic cells during the entire ...
Yoshiko, NISHIMURA, Kenjiro, WAKE
core   +1 more source

Sycosterol A, an α-Synuclein Inhibitory Sterol from the Australian Ascidian Sycozoa cerebriformis

open access: yes, 2021
During a recent biodiscovery study to identify new α-synuclein (α-syn) aggregation inhibitors, we screened 29 Australian marine sponge and ascidian extracts in an MS binding assay.
Prebble, Dale W   +3 more
core   +1 more source

Ascidian notochord elongation

open access: yesDevelopmental Biology, 2019
The elongation of embryo and tissue is a key morphogenetic event in embryogenesis and organogenesis. Notochord, a typical chordate organ, undergoes elongation to perform its regulatory roles and to form the structural support in the embryo. Notochord elongation is morphologically similar across all chordates, but ascidian has evolved distinct molecular
Qiongxuan, Lu   +2 more
openaire   +2 more sources

Barcoding of the cytochrome oxidase I (COI) indicates a recent introduction of Ciona savignyi into New Zealand and provides a rapid method for Ciona species discrimination [PDF]

open access: yes, 2012
Mitochondrial cytochrome oxidase I (COI) gene sequencing (DNA barcoding) of Ciona specimens from New Zealand (NZ) led to the first record of the solitary ascidian Ciona savignyi in the Southern Hemisphere. We sought to quantify C.
Thia, Joshua   +6 more
core   +1 more source

Endozoicomonas are specific, facultative symbionts of sea squirts

open access: yesFrontiers in Microbiology, 2016
Ascidians are marine filter feeders and harbor diverse microbiota that can exhibit a high degree of host-specificity. Pharyngeal samples of Scandinavian and Mediterranean ascidians were screened for consistently associated bacteria by culture-dependent ...
Lars Schreiber   +6 more
doaj   +1 more source

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