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Extrachromosomal DNA isolated from tomato big bud and Candidatus Phytoplasma australiense phytoplasma strains

Tran-Nguyen, Lucy and Gibb, Karen (2006). Extrachromosomal DNA isolated from tomato big bud and Candidatus Phytoplasma australiense phytoplasma strains. Plasmid,56(3):153-166.

Document type: Journal Article
Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 12 times in Scopus Article | Citations

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ISI LOC 000242306000002
IRMA ID 80802555xPUB14
Title Extrachromosomal DNA isolated from tomato big bud and Candidatus Phytoplasma australiense phytoplasma strains
Author Tran-Nguyen, Lucy
Gibb, Karen
Journal Name Plasmid
Publication Date 2006
Volume Number 56
Issue Number 3
ISSN 1095-9890   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-33750460251
Start Page 153
End Page 166
Total Pages 14
Place of Publication San Diego, CA
Publisher Elsevier
Field of Research 0604 - Genetics
0605 - Microbiology
HERDC Category C1 - Journal Article (DEST)
Abstract The nucleotide sequences of two extrachromosomal elements from tomato big bud (TBB) and one extrachromosomal element from Candidatus Phytoplasma australiense (Ca. P. australiense) phytoplasmas were determined. Both TBB plasmids (3319 and 4092 bp) contained an open reading frame (570 bp) with homology to the rolling circle replication initiator protein (Rep). This gene was shorter than the rep genes identified from other phytoplasma plasmids, geminiviruses and bacterial plasmids. Both TBB extrachromosomal DNAs (eDNAs) encoded a putative DNA primase (dnaG) gene, a chromosomal gene required for DNA replication and which contains the conserved topoisomerase/primase domain. We speculate that the replication mechanism for the TBB phytoplasma eDNA involves the dnaG gene instead of the rep gene. The Ca. P. australiense eDNA (3773 bp) was shown to be circular and contained four open reading frames. The rep gene was encoded on ORF 1 and had homology to both plasmid (pLS1) and geminivirus-like domains.
DOI http://dx.doi.org/10.1016/j.plasmid.2006.05.009   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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