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Analysis of expressed sequence tags from calcifying cells of marine coccolithophorid (Emiliania huxleyi)
Wahlund, T.M.; Hadaegh, A.R.; Clark, R.; Nguyen, B.; Fanelli, M.; Read, B.A. (2004). Analysis of expressed sequence tags from calcifying cells of marine coccolithophorid (Emiliania huxleyi). Mar. Biotechnol. 6(3): 278-290. dx.doi.org/10.1007/s10126-003-0035-3
In: Marine Biotechnology. Springer-Verlag: New York. ISSN 1436-2228, more
Peer reviewed article  

Available in Authors 

Keywords
    Algae; Coccoliths; Genomes; Emiliania huxleyi (Lohmann) W.W.Hay & H.P.Mohler, 1967 [WoRMS]; Marine

Authors  Top 
  • Wahlund, T.M.
  • Hadaegh, A.R.
  • Clark, R.
  • Nguyen, B.
  • Fanelli, M.
  • Read, B.A.

Abstract
    An expressed sequence tag (EST) approach was used to investigate gene expression in the unicelluar marine alga Emiliania huxleyi. We randomly selected 3000 EST sequences from a cDNA library of transcripts expressed under conditions promoting coccolithogenesis. Cluster analysis and contig assembly resulted in a unigene set of approximately 1523 ESTs. Only 36% of the unique sequences exhibited significant homology to sequences in GenBank. Of particular interest were the numerous transcripts with homology to sequences associated with sexual reproduction and calcium homeostasis in other unicellular and multicellular organisms. The majority of ESTs (64%) had little or no significant sequence homology to entries in GenBank, suggesting a potential for further novel gene discovery. The catalog of ESTs reported herein represents a significant increase in the limited sequence information currently available for E. huxleyi and should make the coccolithophorid more accessible to powerful genomics and postgenomics technologies.

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