Global analysis of Chlorella variabilis NC64A mRNA profiles during the early phase of Paramecium bursaria chlorella virus-1 infection

Janet M. Rowe, Adrien Jeanniard, James R. Gurnon, Yuannan Xia, David D Dunigan, James L Van Etten, Guillaume Blanc

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The PBCV-1/Chlorella variabilis NC64A system is a model for studies on interactions between viruses and algae. Here we present the first global analyses of algal host transcripts during the early stages of infection, prior to virus replication. During the course of the experiment stretching over 1 hour, about a third of the host genes displayed significant changes in normalized mRNA abundance that either increased or decreased compared to uninfected levels. The population of genes with significant transcriptional changes gradually increased until stabilizing at 40 minutes post infection. Functional categories including cytoplasmic ribosomal proteins, jasmonic acid biosynthesis and anaphase promoting complex/ cyclosomes had a significant excess in upregulated genes, whereas spliceosomal snRNP complexes and the shikimate pathway had significantly more down-regulated genes, suggesting that these pathways were activated or shut-down in response to the virus infection. Lastly, we examined the expression of C. varibilis RNA polymerase subunits, as PBCV-1 transcription depends on host RNA polymerases. Two subunits were up-regulated, RPB10 and RPC34, suggesting that they may function to support virus transcription. These results highlight genes and pathways, as well as overall trends, for further refinement of our understanding of the changes that take place during the early stages of viral infection.

Original languageEnglish (US)
Article numbere90988
JournalPloS one
Volume9
Issue number3
DOIs
StatePublished - Mar 7 2014

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Paramecium bursaria Chlorella virus 1
Paramecium
Chlorella
Virus Diseases
Viruses
Genes
Messenger RNA
infection
Transcription
DNA-directed RNA polymerase
genes
algae
viruses
transcription (genetics)
Anaphase-Promoting Complex-Cyclosome
Small Nuclear Ribonucleoproteins
shikimate pathway
RNA Polymerase III
Ribosomal Proteins
ribosomal proteins

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Global analysis of Chlorella variabilis NC64A mRNA profiles during the early phase of Paramecium bursaria chlorella virus-1 infection. / Rowe, Janet M.; Jeanniard, Adrien; Gurnon, James R.; Xia, Yuannan; Dunigan, David D; Van Etten, James L; Blanc, Guillaume.

In: PloS one, Vol. 9, No. 3, e90988, 07.03.2014.

Research output: Contribution to journalArticle

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