[Scripps/JCVI] Blood Falls has long been one of Antarctica’s strangest landmarks: a red-stained outflow that spills from the face of Taylor Glacier into the cold, dry landscape of the McMurdo […]
diatom
Posted inBiosignatures & Paleobiology, Fossils & Paleontology, Microbiology & Virology, Nomenclature, Systematics, Natural History, Origin & Evolution of Life, Plant Biology, Press Release, ROVs/Submersibles/Diving, Sample Return, Water/Hycean Worlds & Oceanography
Study Resolves The Diatom Tree Of Life
Trees get most of the love, but diatoms, a group of photosynthetic microalgae, produce 20% of Earth’s oxygen and are the foundation of aquatic food webs. The prevalence and diversity […]
![Location of sediment sampling and pictures of resurrected species S. marinoi. (A) Map of the Baltic Sea (northern Europe) with the location of sediment core sampling (EMB262/6; 240 m water depth) in the eastern Gotland Basin (triangle). Additional sampling points of stratigraphy reference cores (points): M86-1a/36 [35], MSM62–60 [36], and P435-2-1 [34]. (B) Pictures of different Lugol-stained strains of S. marinoi. Strain SM_EGB_382_11 from 6871 ± 140 years of dormancy, SM_EGB_1_5 from 3 ± 2 years of dormancy, SM_EGB_107_1 from 1131 ± 110 years of dormancy, SM_EGB_20_4 from 58 ± 5 years of dormancy, and SM_EGB_232_2 from 3411 ± 120 years of dormancy. Scale bars = 20 μm. -- The ISME Journal](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/04/Resurrection-Of-A-Diatom-After.png?resize=1200%2C717&ssl=1)
Posted inBiophysics, Biosignatures & Paleobiology, Habitable Zones, Microbiology & Virology, Sample Return, Status Report, Water/Hycean Worlds & Oceanography
Resurrection Of A Diatom After 7,000 Years From Anoxic Baltic Sea Sediment
Dormancy is a widespread key life history trait observed across the tree of life. Many plankton species form dormant cell stages that accumulate in aquatic sediments and, under anoxic conditions, […]
Posted inBiochemistry & Organic Chemistry, Microbiology & Virology, Origin & Evolution of Life, Status Report
Silicification of Cyanobacteria
The ability to use dissolved silicon has been found in various oceanic phytoplankton, including eukaryotic diatoms and prokaryotic cyanobacteria.