@article {4494, title = {Coleoid cephalopod color patterns: Adult skin structures and their emergence during development in sepia officinalis}, journal = {Vie et Milieu}, volume = {66}, year = {2016}, month = {May 2016}, pages = {43-55}, abstract = {

The skin of coleo{\"\i}d cephalopods is a complex tissue that allows the rapid display of numerous changing or static patterns for communication and camouflage. Chromatophores, iridophores, and leucophores are responsible for these properties. Chromatophores are pigmentary neuromuscular organs, directly controlled by the brain. Iridophores are iridescent cells that use platelets of proteins that are arranged into repetitive structures (iridosomes) to produce iridescence; and leucophores are perfect reflectors. The same family of protein (reflectins), initially characterized in iridophores, have been detected (at different levels) in the three structures. Here we review the current knowledge of adult skin and its nervous control and describe the establishment of chromatophores and iridophores during embryonic development in Sepia officinalis.

}, keywords = {Cephalopods, Chromatophores, color pattern, Development, iridophores}, author = {Aude Andouche and Yann Bassaglia} } @article {3391, title = {Cephalopod development: what we can learn from differences}, journal = {OA Biology}, volume = {2}, year = {2014}, pages = {6}, type = {Review}, abstract = {

Introduction
The molluscan neuro-muscular system shows extreme diversity. Cephalopods present an original body plan, a derived neuro-muscular complex and a development with drastic changes in the antero-posterior/dorso-ventral orientation. How it took place during evolution is an unresolved question that can be approached by the study of developmental genes. Studying the expression of conserved transcription factors (Pax and NK families, otx, apt) and morphogen (hedgehog) during development is a good test of the conservation of their functions. We underline here unexpected expression patterns during cephalopod development, and we aim to suggest that these patterns may be, at least partly, in relation to morphological novelties in this clade.
Conclusion
The expression patterns observed point out the diversity of molecular pathways recruited during evolution and the necessary carefulness regarding generalization of results obtained from a very small set of model organisms. Studying different species, with a large diversity of morphology, could help to have a better understanding of the variety of the genes roles and/or of the plasticity of networks.

}, url = {http://www.oapublishinglondon.com/oa-biology}, author = {Laure Bonnaud-Ponticelli and Yann Bassaglia} } @article {3390, title = {Could FaRP-Like Peptides Participate in Regulation of Hyperosmotic Stress Responses in Plants?}, journal = {Front Endocrinol (Lausanne)}, volume = {5}, year = {2014}, month = {2014}, pages = {132}, abstract = {

The ability to respond to hyperosmotic stress is one of the numerous conserved cellular processes that most of the organisms have to face during their life. In metazoans, some peptides belonging to the FMRFamide-like peptide (FLP) family were shown to participate in osmoregulation via regulation of ion channels; this is, a well-known response to hyperosmotic stress in plants. Thus, we explored whether FLPs exist and regulate osmotic stress in plants. First, we demonstrated the response of Arabidopsis thaliana cultured cells to a metazoan FLP (FLRF). We found that A. thaliana express genes that display typical FLP repeated sequences, which end in RF and are surrounded by K or R, which is typical of cleavage sites and suggests bioactivity; however, the terminal G, allowing an amidation process in metazoan, seems to be replaced by W. Using synthetic peptides, we showed that amidation appears unnecessary to bioactivity in A. thaliana, and we provide evidence that these putative FLPs could be involved in physiological processes related to hyperosmotic stress responses in plants, urging further studies on this topic.

}, issn = {1664-2392}, doi = {10.3389/fendo.2014.00132}, author = {Bouteau, Francois and Yann Bassaglia and Monetti, Emanuela and Tran, Daniel and Navet, S and Mancuso, Stefano and El-Maarouf-Bouteau, Hayat and Laure Bonnaud-Ponticelli} }