WebApr 13, 2024 · Diatoms are one of the main species of interest due to their possible impact on the maintenance of ecosystems, as well as their photosynthetic capacity and biotechnological applications. Reliable, easy, rapid identification of diatoms remains a highly desirable goal to avoid the difficulty for experts in the visual analysis of frustules; a … WebSep 5, 2024 · Sequencing of diatom genomes is revealing the evolutionary underpinnings of their ecological success by examination of their gene repertoires and the mechanisms …
Rise of the diatoms — a new timeline The Department of …
WebApr 23, 2004 · The molecular record of C 25 HBI chemical fossils in a large suite of well-dated marine sediments and petroleum revealed that the older cluster, composed of rhizosolenid diatoms, evolved 91.5 ± 1.5 million years ago (Upper Turonian), enabling an accurate dating of the pace of diatom evolution that is unprecedented. WebMay 12, 2024 · The evolution of diatoms through primary and secondary endosymbiosis. Highly debated is the process by which a heterotrophic eukaryote acquired an endosymbiont from the group of Archaeplastida (Chlorophyta, glaucophyte, rhodophyta). Phylogenomics provided evidence of a cryptic endosymbiotic event with an ancient chlorophyte … ford rotterdam occasions
Revisiting the sedimentary record of the rise of …
WebJan 1, 2007 · CHAPTER 11 - The Origin and Evolution of the Diatoms: Their Adaptation to a Planktonic Existence I. THE HALLMARK OF THE DIATOMS: THE SILICA FRUSTULE. The compound silica cell wall of the diatoms is composed of two... II. DIATOM … The global importance of marine plankton. Oceans cover 71% of the surface of the … This chapter reviews the evolution of the diatoms and of various groups within the … Molecular analyses were carried out using the hypervariable domains D1–D3 of the … Hydrobiologia 443: 213–231 Theriot E (1992) Clusters, species concepts, and … Silicon deprivation of young cells of C. fusiformis in light-dark synchronized … The typical dinoflagellate cell displays two flagella, one of which wraps the cell in … Evolution at this stage will have been driven by resource competition and death … WebJun 23, 2016 · The utilization of silicon by diatoms therefore appears to be strongly linked to their evolution and has resulted in a unique ecological and biogeochemical role for diatoms in the ocean. Silicon, in the form of silicic acid, is transported into the diatom cell from seawater by silicon transporter (SIT) proteins (Hildebrand et al. 1997 , Curnow ... WebDec 11, 2024 · We investigated the thermal adaptation strategies of the four diatoms by combining experimental evolution with measurements of fundamental physiology (Fig. S2). The four species showed a fast ... ford rotunda service solutions