Glutamatergic system in the pelagic tunicates
Moroz, L. L.; Norekian, T. P.
Show abstract
Tunicates are a sister lineage to vertebrates, with compact, relatively simple nervous systems featuring a single central ganglion, reflecting a minimal complement of chordate functional architecture. Although glutamatergic neurons are the most abundant population in vertebrates, their ancestry remains unclear. Here, we used glutamate immunohistochemical labeling (Glutamate IR) to identify glutamatergic elements in the neural system of the pelagic tunicate Doliolum sp. (Thaliacea). Glutamate IR was observed in all major nerves of the central ganglion, including motor-like terminals on the circular bundles of swim muscles, which were themselves labeled. However, the neuronal somata in the central ganglion were not labeled, suggesting glutamate accumulation in axonal processes and terminals. In contrast, we did not identify GABA-containing neural elements. This study suggests that glutamatergic systems were elaborated in the common ancestor of tunicates and vertebrates, although the functional role of glutamate and its role in muscular control need further investigation in these pelagic tunicates.
Matching journals
The top 3 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- The complete mitochondrial genome of Calyptogena marissinica (Heterodonta: Veneroida: Vesicomyidae): insight into the deep-sea adaptive evolution of vesicomyids 94%
- The Neuromuscular system of Chironomus vitellinus (Diptera: Chironomidae) 94%
- Identification and classification of innexin gene transcripts in the central nervous system of the terrestrial slug Limax valentianus 93%
Similar papers in this journal
Similar papers in this journal
- Striking olfactory receptor gene repertoire expansion in Senegalese sole (Solea senegalensis) 94%
- Post-embryonic tail development through molting of the freshwater shrimp Neocaridina denticulata 93%
- Characterization of primary structure of the major silk gene, h-fibroin, across caddisfly suborders (Trichoptera) 92%
Similar papers in this journal
- SARS-CoV-2, a threat to marine mammals? A study from Italian seawaters 92%
- Insights into the mechanism of bovine spermiogenesis based on comparative transcriptomic studies 92%
- Fish MicroRNA Responses to Thermal Stress: Insights and Implications for Aquaculture and Conservation Amid Global Warming 90%
Similar papers in this journal
- Integrated analysis of sex-biased mRNA and miRNA expression profiles in the gonad of the discus fish (Symphysodon aequifasciatus) 93%
- Genome-wide transcriptional responses of marine nematode Litoditis marina to hyposaline and hypersaline stresses 92%
- MicroRNA-1 promotes the development of and prolongs engorgement time in Hyalomma anatolicum anatolicum (Acari: Ixodidae) ticks 91%
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.