World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Plos One : a Novel Type of Colony Formation in Marine Planktonic Diatoms Revealed by Atomic Force Microscopy, Volume 7

By Kreplak, Laurent

Click here to view

Book Id: WPLBN0003933022
Format Type: PDF eBook :
File Size:
Reproduction Date: 2015

Title: Plos One : a Novel Type of Colony Formation in Marine Planktonic Diatoms Revealed by Atomic Force Microscopy, Volume 7  
Author: Kreplak, Laurent
Volume: Volume 7
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection
Publication Date:
Publisher: Plos


APA MLA Chicago

Kreplak, L. (n.d.). Plos One : a Novel Type of Colony Formation in Marine Planktonic Diatoms Revealed by Atomic Force Microscopy, Volume 7. Retrieved from

Description : Diatoms have evolved a variety of colonial life forms in which cells are connected by organic threads, mucilage pads or silicate structures. In this study, we provide the first description of a novel strategy of colony formation among marine planktonic diatoms. Bacteriastrum jadranum forms loose but regular chains with distinct heterovalvate terminal cells. The colonial cells and their siliceous projections, the setae, are not in direct contact: instead, they are enclosed within the optically transparent organic matrix. This cell jacket structure was detected by staining procedure with Alcian Blue, which showed that the polysaccharides are predominant matrix constituents and revealed that the jacket reaches the span of the setae. The scanning electron microscopy (SEM) observations showed distinguishable fibrillar network firmly associated with cells. Using atomic force microscopy (AFM), we were able to visualise and characterise the cell jacket structure at molecular resolution. At nanoscale resolution, the cell jacket appears as a cross-linked fibrillar network organised into a recognisable structure. The circular patches of self-repeating pattern (hexagonal pores with openings of 8–100 nm) are connected through thicker surrounding fibrils and reinforced by branching fibrils. The pore-forming fibrils within the patches are only 0.6–1.6 nm high, the surrounding fibrils connecting patches are 2.0–2.8 nm high, and the branching fibrils are considerably wider but not higher than 4.0 nm. The discovered polysaccharide fibrillar network is highly organised and delicately structured with a monomolecular fibril height of 0.6 nm. We conclude that the Bacteriastrum polysaccharide jacket represents an essential part of the cell, as the conjunction of the polymer network with the frustule appears to be extremely tight and such specific and unique patterns have never been found in self-assembled polysaccharide gel networks, which are usually encountered in the marine environment.


Click To View

Additional Books

  • Plos One : a Spiroligomer Α-helix Mimic ... (by )
  • Plos One : Recruiting at the Edge ; Kine... (by )
  • Plos One : Induction of Hca587-specific ... (by )
  • Plos One : Insights Into the N-sulfation... (by )
  • Plos One : Delphinidin-3-glucoside Prote... (by )
  • Plos One : Leukemia Prediction Using Spa... (by )
  • Plos One : Med25 is a Mediator Component... (by )
  • Plos One : Cost-effectiveness Analysis o... (by )
  • Plos One : the Sterile Insect Technique ... (by )
  • Plos One : Serum Microrna-122 Predicts S... (by )
  • Plos One : Potassium and Ionic Strength ... (by )
  • Plos One : Genome-wide Methylated Dna Im... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from National Public Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.