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  • silica
  • The silica shell of the diatom is called the 'frustule' and is made of two halves, each in turn composed of several different pieces. (tolweb.org)
  • The silica of the diatom cell wall is resistant to decay, although it will begin to dissolve once its organic coating has been stripped off. (tolweb.org)
  • Because of the construction of the silica frustule and the way in which cells divide, average cell size declines during the life cycles of most diatoms. (tolweb.org)
  • Diatoms help mediate carbon and oxygen cycles, are a foundational component of marine food webs, and they process an incredible amount of silica, which comprises about one-quarter of the earth's crust. (livescience.com)
  • A characteristic feature of diatom cells is that they are encased within a unique cell wall made of silica. (biology-online.org)
  • genome
  • Andrew Alverson, a biologist and diatom expert at the University of Arkansas in Fayetteville, is studying diatom genomes to answer such questions as how diatoms evolved, how much of their genome they share with bacteria, and how these microorganisms became so well integrated into the global ecosystem. (livescience.com)
  • On page 79 of this issue of Science , researchers report a draft sequence of the genome of the diatom Thalassiosira pseudonana , which lives in salt water and is a lab favorite among diatom experts. (sciencemag.org)
  • The genome engineering resources for diatoms lag far behind those for yeast or E. coli . (jcvi.org)
  • We outline challenges in reconstructing paleopolyploid events in diatoms that, together with these results, offer a framework for understanding the impact of genome duplication in a group that likely harbors substantial genomic diversity. (nih.gov)
  • taxonomic
  • Thus, as a character of taxonomic significance, it may be inferred that diatom shell structure is determined, ultimately, by genetic information. (icr.org)
  • model diatom
  • Using biochemical, physiological, bioinformatics, and reverse genetic approaches, we analyzed how the flux of carbon into lipids is influenced by nitrogen stress in a model diatom, Phaeodactylum tricornutum . (pnas.org)
  • Biology
  • Sixteen new chapters have been added since the first edition including introductory chapters on diatom biology and the numerical approaches used by diatomists. (cambridge.org)
  • geologic
  • In fact diatoms are damn useful for many many things, even for determining the age of rock and sediment layers - diatom cell walls are so well preserved in the fossil record and have been so extensively studied by scientists, that we know almost exactly when different species appear and disappear in geologic time. (deepseanews.com)
  • raphe
  • In the picture of the cleaned diatom above the raphe can be seen as the thin central horizontal line. (microscopy-uk.org.uk)
  • In raphid diatoms these can include the form of the raphe endings, details of the pore occlusions, and the structure of the girdle, while chloroplast structure can also vary. (springer.com)
  • Holocene
  • A check-list of the diatoms in the Holocene deposits of the western Belgian plain with a survey of their apparent ecological requirements. (springer.com)
  • Gomphonema
  • The epilithic diatoms were collected and the Gomphonema christensenii and Gomphonema clevei were flourishing. (go.jp)
  • specimens
  • Variation in shape and size during the life cycle causes major problems for people trying to identify diatom species and also for taxonomists, if only a few dead specimens are available for study. (tolweb.org)
  • ecological
  • Particular emphasis is placed on the use of diatoms in analysing ecological problems related to climate change, acidification, eutrophication, and other pollution issues. (cambridge.org)
  • fossil record
  • Because they are so easily preserved, diatoms have an extensive fossil record. (encyclopedia.com)
  • Diatoms have been a marvel to microscopists since Ernst Haeckel's mid-19th century descriptions of the first of what now amount to some 10,000 species living today, and in the fossil record. (icr.org)
  • biotechnology
  • Not surprisingly, their propensity for fast growth and high yields, diatoms are both ecologically important and promising for biotechnology. (jcvi.org)
  • carbon
  • When starved for nutrients, diatoms redirect carbon toward biosynthesis of storage lipids, triacylglycerols (TAGs). (pnas.org)
  • synthesis
  • Its synthesis of techniques, ideas, and viewpoints move diatom science strongly into the 21st century. (cambridge.org)
  • This critical review shows that diatoms can be a source of inspiration for the synthesis of advanced nanostructured biohybrids. (rsc.org)
  • halves
  • Bilaterally symmetric diatoms are like human beings, having a single plane through which halves are mirror images of one another. (encyclopedia.com)