Evolutionary relationships among Phytophthora species deduced from rDNA sequence analysis

Crawford, A. R., Bassam, B. J., Drenth, A., MacLean, D. J. and Irwin, J. A. G. (1996) Evolutionary relationships among Phytophthora species deduced from rDNA sequence analysis. Mycological Research, 100 4: 437-443. doi:10.1016/S0953-7562(96)80140-7


Author Crawford, A. R.
Bassam, B. J.
Drenth, A.
MacLean, D. J.
Irwin, J. A. G.
Title Evolutionary relationships among Phytophthora species deduced from rDNA sequence analysis
Journal name Mycological Research   Check publisher's open access policy
ISSN 1469-8102
0953-7562
Publication date 1996-04
Sub-type Article (original research)
DOI 10.1016/S0953-7562(96)80140-7
Volume 100
Issue 4
Start page 437
End page 443
Total pages 7
Place of publication Cambridge, UK
Publisher Elsevier
Language eng
Subject 060704 Plant Pathology
Formatted abstract
Sequence analysis of the internal transcribed spacer (ITS) regions I and II of ribosomal DNA were used to deduce evolutionary relationships among 15 Phytophthora species. Analysis of papillate, semi-papillate and non-papillate species showed that sporangium papillation has phylogenetic significance, with the three morphological groups each forming separate clusters. Within the P. megasperma species complex, separate evolutionary lines were identified for P. medicaginis, P. trifolii, and P. sojae formerly regarded as formae spéciales of P. megasperma, confirming their recent reclassification as biological species. rDNA sequence analysis was able to distinguish P. cryptogea and P. drechsleri isolates indicating a valid basis for speciation. P. macrochlamydospora from soybean, which has only been observed in Australia was closely related to P. sojae, indicating possible common ancestory.
Keyword Taxonomic strucutre
Mitochondrial - DNA
Megasperma
Drechsleri
Phylogeny
Cryptogea
Biology
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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Created: Mon, 12 Jul 2010, 14:39:39 EST by Laura McTaggart on behalf of Faculty of Science