The dorsoanterior brain of adult amphioxus shares similarities in ...
2021年5月21日 · Our findings suggest that the PAD in the adult amphioxus brain vesicle and the vertebrate telencephalon evolved from the same brain precursor region in ancestral chordates, which would imply homology of these structures.
The dorsoanterior brain of adult amphioxus shares similarities in ...
2021年5月21日 · The amphioxus brain grows progressively and outwards from the ventricular surface. Our comparative expression analysis between embryonic and adult brains (Fig. (Fig.3) 3) indicates that territories of new genetic identity arise throughout the life cycle and after metamorphosis. To understand how the continued development and differentiation of ...
A neurochemical map of the developing amphioxus nervous system
2012年6月7日 · In the present study, we mapped the distribution of amphioxus CNS cells producing distinctive neurochemicals. To this end, we cloned genes encoding biosynthetic enzymes and/or transporters of the most common neurotransmitters and assayed their developmental expression in the embryo and early larva.
A neurochemical map of the developing amphioxus nervous system
2012年6月7日 · In the present study, we mapped the distribution of amphioxus CNS cells producing distinctive neurochemicals. To this end, we cloned genes encoding biosynthetic enzymes and/or transporters of the most common neurotransmitters and assayed their developmental expression in the embryo and early larva.
Neuronal Organization of the Brain in the Adult Amphioxus ...
2015年10月15日 · Amphioxus (Cephalochordata) belongs to the most basal extant chordates, and knowledge of their brain organization appears to be key to deciphering the early stages of evolution of vertebrate brains. Most comprehensive studies of the organization of the central nervous system of adult amphioxus have …
Beyond vertebrates: the amphioxus as a relevant model system to …
The amphioxus, as the earliest divergent representative of the chordate phyla, is currently considered a chordate archetype from a genomic and morphological perspective. Their unique features position this non-vertebrate species as a key intermediate to understand the emergence of the vertebrates.
Evolutionary origin of the chordate nervous system revealed by ...
2024年7月18日 · Here we develop and analyse a single-cell RNA-sequencing dataset from seven amphioxus embryo stages to understand chordate cell type evolution and to study vertebrate neural cell type origins.
Basic features of the ancestral chordate brain: a ... - PubMed
2008年3月18日 · Except for a pineal homolog, the amphioxus brain consists of a much simplified version of the ventral brainstem, including a region probably homologous with the hypothalamus, and a locomotory control center roughly comparable to the vertebrate tegmentum and reticulospinal system.
Tripartite origin of the chordate brain - Nature
2024年8月20日 · A survey of Amphioxus cell types reveals ancient neurosecretory cells and multiple developmental origins of the chordate brain.
Lessons from Amphioxus Bauplan About Origin of Cranial Nerves …
2018年4月16日 · Amphioxus is the living chordate closest to the ancestral form of vertebrates, and in a key position to reveal essential aspects of the evolution of the brain Bauplan of vertebrates. The dorsal neura...