Results 31 to 40 of about 758 (126)
Naturally Drug-Loaded Chitin: Isolation and Applications
Marine Drugs, 2019 Naturally occurring three-dimensional (3D) biopolymer-based matrices that can be used in different biomedical applications are sustainable alternatives to various artificial 3D materials.
Valentine Kovalchuk +21 more
doaj +1 more source
miRNA Repertoires of Demosponges Stylissa carteri and Xestospongia testudinaria. [PDF]
PLoS ONE, 2016 MicroRNAs (miRNAs) are small regulatory RNAs that are involved in many biological process in eukaryotes. They play a crucial role in modulating genetic expression of their targets, which makes them integral components of transcriptional regulatory ...
Yi Jin Liew +3 more
doaj +1 more source
Molecular and morphological congruence of three new cryptic Neopetrosia spp. in the Caribbean [PDF]
PeerJ, 2019 Neopetrosia proxima (Porifera: Demospongiae: Haplosclerida) is described as a morphologically variable sponge common on shallow reefs of the Caribbean. However, the range of morphological and reproductive variation within putative N.
Jan Vicente +3 more
doaj +2 more sources
Seventeen new complete mtDNA sequences reveal extensive mitochondrial genome evolution within the Demospongiae. [PDF]
PLoS ONE, 2008 Two major transitions in animal evolution--the origins of multicellularity and bilaterality--correlate with major changes in mitochondrial DNA (mtDNA) organization.
Xiujuan Wang, Dennis V Lavrov
doaj +1 more source
Sedimentology, EarlyView.ABSTRACT Classical models of formation of sedimentary siliceous rocks (flint, chert, opoka) commonly assume that the Cretaceous marine silicon (Si) cycle was primarily biologically controlled, broadly analogous to the modern ocean. In this framework, siliceous sponges are regarded as the principal source of dissolved silica (dSi) to sediment porewaters,
Agata Jurkowska +4 more
wiley +1 more source
Sedimentology, Volume 73, Issue 6, Page 2246-2280, October 2026.ABSTRACT Filamentous, anastomosing spar‐filled networks in Phanerozoic carbonates have been interpreted as the mineralised remains of keratose (non‐spiculate) sponges, yet their recognition remains contested because fabrics of broadly similar appearance may arise from microbial, diagenetic or physical processes. This study combines direct fossil–modern
Jeong‐Hyun Lee +2 more
wiley +1 more source
Biopolymers, Volume 117, Issue 5, September 2026.The two phosphorylation sites within the Gab1 fragment 142‐203 exhibit distinct structural characteristics. Tyr162 is in a disordered region, Y183 in a helical segment. ABSTRACT The biological function of intrinsically disordered proteins is frequently coupled to short linear motifs, which serve as protein binding sites.
Anne Dietrich +5 more
wiley +1 more source
New Zealand Journal of Zoology, Volume 53, Issue 3, September 2026.Rhodolith beds are structurally complex biogenic habitats recognized as important reservoirs of marine biodiversity, yet their associated sponge fauna remains poorly documented in the Southwestern Atlantic. Here, two new species of the genus Clathria Schmidt, 1862 (Microcionidae) are described from mesophotic rhodolith beds off the coast of Pernambuco,
Thales Barros, Ulisses Pinheiro
wiley +1 more source
CO I barcoding reveals new clades and radiation patterns of Indo-Pacific sponges of the family Irciniidae (Demospongiae: Dictyoceratida). [PDF]
PLoS ONE, 2010 DNA barcoding is a promising tool to facilitate a rapid and unambiguous identification of sponge species. Demosponges of the order Dictyoceratida are particularly challenging to identify, but are of ecological as well as biochemical importance.Here we ...
Judith Pöppe +4 more
doaj +1 more source
On the dissolution of sponge silica: Assessing variability and biogeochemical implications
Frontiers in Marine Science, 2022 The dissolution of the biogenic silica that constitutes the skeletons of silicifying organisms is an important mechanism for regenerating dissolved silicon in the ocean.
Manuel Maldonado +8 more
doaj +1 more source