Isolate Browser

Isolate ID

 PD_00040 (Phytophthora lacustris )

Source(s) and alternative IDs

P10337 ( WPC )

Host of origin

N/A

Substrate

 

Geographic origin

 United Kingdom ( England )

Pathogenic Race

 

Date of Isolation

 1972

Mating Type

 Unknown

Characteristics

 

Reference

 

Remarks

 Received September 2003,from David Cooke, AF266793 Multiple new phenotypic taxa from trees and riparian ecosystems in Phytophthora gonapodyides–P. megasperma ITS Clade 6, which tend to be high-temperature tolerant and either inbreeding or sterile Clive M. BRASIER, David E. L. COOKE, James M. DUNCAN and Everett M. HANSEN Phytophthora isolates associated with Phytophthora major ITS Clade 6 were grouped into 11 phenotypic taxa. These comprised the described morphospecies P. gonapodyides, P. megasperma s. str. and P. humicola; four previously identified but so far undescribed taxa, informally designated here P. sp. O-group, P. sp. Apple-cherry, P. taxon Pgchlamydo, and P. taxon Walnut; and four previously unknown taxa, designated P. taxon Oaksoil, P. taxon Raspberry, P. taxon Forestsoil, and P. taxon Riversoil. With the exception of P. gonapodyides, each phenotypic taxon represented an unique ITS lineage. Two isolates morphologically identical to P. gonapodyides comprised a separate lineage and probably represent another taxon, designated here P. taxon Salixsoil. P. humicola, P. sp. O-group, P. sp. Apple-cherry and P. taxon Walnut grouped together as subclade I. Within subclade II, P. taxon Oaksoil, P. taxon Raspberry, P. taxon Forestsoil, P. taxon Riversoil and P. taxon Pgchlamydo formed a cluster of closely related but phenotypically distinct lineages basal to P. gonapodyides and P. megasperma, P. taxon Salixsoil being the most basal member. The taxonomy, adaptation and breeding systems of Clade 6 taxa are discussed. They show a strong association with forests and riparian ecosystems, only a limited association with agriculture and an ability to tolerate high temperatures. Also, in contrast to most other Phytophthora clades, Clade 6 taxa are predominantly sterile or inbreeding in culture. Only one taxon, P. sp. O-group, appears classically A1/A2 heterothallic.

Available marker sequences

Chk	Marker	Sequence	Length
	Beta Tubulin	PD_00040_B-tub	1134 bp
	TEF1(v.2.0)	PD_00040_EF-1a	961 bp
	Enolase	PD_00040_Eno	1176 bp
	Internal transcribed spacer region of rDNA	PD_00040_ITS	818 bp
	60S Ribosomal Protein L10	PD_00040_60S-RPL10	496 bp
	Heat Shock Protein 90	PD_00040_HSP90	1743 bp
	Large Subunit rRNA	PD_00040_28s-rRNA	1340 bp
	TigA gene fusion	PD_00040_Tig	1614 bp
	Mitochondrial cox2 locus	PD_00040_cox2	1056 bp
	Mitochondrial Ribosomal Protein S10	PD_00040_rps10	327 bp
	Mitochondrial NADH Dehydrogenase Subunit 9	PD_00040_nad9	567 bp
	Mitochondrial Sec-Independent Transporter Protein	PD_00040_secY	744 bp
	Mitochondrial cox1 locus	PD_00040_cox1	680 bp