Mitochondrial genome sequences and comparative genomics ofPhytophthora ramorum and P. sojae
The complete sequences of the mitochondrial genomes of theoomycetes of Phytophthora ramorum and P. sojae were determined during thecourse of their complete nuclear genome sequencing (Tyler, et al. 2006).Both are circular, with sizes of 39,314 bp for P. ramorum and 42,975 bpfor P. sojae. Each contains a total of 37 identifiable protein-encodinggenes, 25 or 26 tRNAs (P. sojae and P. ramorum, respectively)specifying19 amino acids, and a variable number of ORFs (7 for P. ramorum and 12for P. sojae) which are potentially additional functional genes.Non-coding regions comprise approximately 11.5 percent and 18.4 percentof the genomes of P. ramorum and P. sojae, respectively. Relative to P.sojae, there is an inverted repeat of 1,150 bp in P. ramorum thatincludes an unassigned unique ORF, a tRNA gene, and adjacent non-codingsequences, but otherwise the gene order in both species is identical.Comparisons of these genomes with published sequences of the P. infestansmitochondrial genome reveals a number of similarities, but the gene orderin P. infestans differs in two adjacent locations due to inversions.Sequence alignments of the three genomes indicated sequence conservationranging from 75 to 85 percent and that specific regions were morevariable than others.
- Research Organization:
- COLLABORATION - USDA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 919837
- Report Number(s):
- LBNL--60027; BnR: KP1103010
- Journal Information:
- Current Genetics, Journal Name: Current Genetics Vol. 51; ISSN 0172-8083; ISSN CUGED5
- Country of Publication:
- United States
- Language:
- English
Phytophthora sojae Races Have Arisen by Clonal Evolution and by Rare Outcrosses
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journal | January 1994 |
Linear mitochondrial molecules and intraspecific mitochondrial genome stability in a species of Pythium
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journal | February 1991 |
Estimating Synonymous and Nonsynonymous Substitution Rates Under Realistic Evolutionary Models
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journal | January 2000 |
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