Spicule Form in Leucosolenia complicata

Spicule formation in calcareous sponges: Coordinated expression of biomineralization genes and spicule-type specific genes

The ability to form mineral structures under biological control is widespread among animals. In several species, specific proteins have been shown to be involved in biomineralization, but it is uncertain how they influence the shape of the growing biomineral and the resulting skeleton. Calcareous sponges are the only sponges that form calcitic spicules, which, based on the number of rays (actin...

Draft Genome Sequence of the Archiascomycetous Yeast Saitoella complicata

The draft genome sequence of the archiasomycetous yeast Saitoella complicata was determined. The assembly of newly and previously sequenced data sets resulted in 104 contigs (total of 14.1 Mbp; N 50, 239 kbp). On the newly assembled genome, a total of 6,933 protein-coding sequences (7,119 transcripts, including alternative splicing forms) were identified.

Spicule emission profiles observed in He 10830 Å

Aims. Off-the-limb observations with high spatial and spectral resolution will help us understand the physical properties of spicules in the solar chromosphere. Methods. Spectropolarimetric observations of spicules in the He  10830 Å multiplet were obtained with the Tenerife Infrared Polarimeter on the German Vacuum Tower Telescope at the Observatorio del Teide (Tenerife, Spain). The analysis ...

Spicule formation by cultured embryonic cells from the sea urchin.

Giant macro-spicule as observed by CDS on SOHO

We examine spectral time series of coronal line Mg ix 368 Å and transition region line O v 629 Å, observed with the Coronal Diagnostic Spectrometer (CDS) onboard the SOHO spacecraft. Primarily we were looking for intensity and velocity oscillations in polar plumes, however by chance we detected a giant macro-spicule at the limb and were able to follow its dynamical structure. Blue and red-shift...