The Molecular Timeline of a Reviving Bacterial Spore
Effect of Mg/Ca ratio in seawater on shell composition in shallow benthic foraminifera
The ratio of magnesium to calcium (Mg/Ca) in CaCO3 shells of foraminifera is widely used to determine paleotemperatures. However, Mg/Ca is highly variable within and between species, suggesting a…
RNA Dynamics in Aging Bacterial Spores
Dynamic metabolic exchange governs a marine algal-bacterial interaction
It is shown through a laboratory model system that the bacterium Phaeobacter inhibens, a well-studied member of the Roseobacter group, intimately interacts with E. huxleyi, a model coccolithophore micro-alga that generates vast blooms in the ocean.
Molecular Kinetics of Reviving Bacterial Spores
- E. Segev, Alex M. Rosenberg, Gideon Mamou, L. Sinai, S. Ben-Yehuda
- BiologyJournal of Bacteriology
- 15 February 2013
The duration of the ripening period was found to correlate with the initial spore rRNA content and the kinetics of rRNA accumulation upon exiting dormancy, and the synthesis of the ribosomal protein RplA and the degradation of the spore-specific protein SspA also correlated with the duration.
Bacterial influence on alkenones in live microalgae
- E. Segev, I. Castañeda, E. Sikes, H. Vlamakis, R. Kolter
- Environmental Science, BiologyJournal of Phycology
- 1 February 2016
Results suggest that algal‐bacterial interactions may be responsible for some of this variability in proxies for estimating past sea surface temperatures of microalga Emiliania huxleyi.
Microalgal cytometric analysis in the presence of endogenous autofluorescent pigments
Multicellular Features of Phytoplankton
Evidence is provided suggesting that coccolithophores and diatoms, two key groups of phytoplankton, exhibit a multicellular-like state, which would mean that the benefits of apoptotic processes in phy toplankon could be studied in analogy to multice cellular organisms.
Morphological Heterogeneity and Attachment of Phaeobacter inhibens
It is shown that rosettes are formed by the attachment of individual cells at the polysaccharide-containing pole rather than by cell division, and that P. inhibens attachment to abiotic surfaces is hindered by the presence of DNA from itself, but not from other bacteria.
Resolving the Microalgal Gene Landscape at the Strain Level: a Novel Hybrid Transcriptome of Emiliania huxleyi CCMP3266
- Martin Sperfeld, Dayana Yahalomi, E. Segev
- BiologyApplied and Environmental Microbiology
- 10 November 2021
A novel and comprehensive transcriptomic hybrid approach is presented to generate a reference for genetic analyses and resolve the microalgal gene landscape at the strain level and unveiled novel genes in the variable portion of E. huxleyi that play putative roles in microbial interactions.