Document Detail

Two new species of Pythium, P. senticosum and P. takayamanum,isolated from cool-temperate forest soil in Japan.
MedLine Citation:
PMID:  19623925     Owner:  NLM     Status:  MEDLINE    
Pythium senticosum and P. takayamanum spp. nov. were isolated from cool-temperate forest soil in Japan. P. senticosum can grow at 5 C and is fast growing at 25 C with a radial growth of 22.2 mm 24 h(-1). The species is morphologically characterized by ovoid to ellipsoid sporangia with apical papilla, ornamented oogonia with acute conical spines, and antheridia with broad attachment to oogonia. P. takayamanum is very different and can grow at 35 C. This species is morphologically characterized by its wavy antheridial stalks and ellipsoidal oogonia with constricted areas. Phylogenetic analyses of the ITS rDNA region and the partial COX2 gene showed that the two species are genetically distinct from each other and from their closest relatives. P. senticosum is closely related to P. dimorphum and P. undulatum whereas P. takayamanum is closely related to P. rhizosaccharum and P. parvum.
Masako Senda; Koji Kageyama; Haruhisa Suga; C André Lévesque
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Mycologia     Volume:  101     ISSN:  0027-5514     ISO Abbreviation:  Mycologia     Publication Date:    2009 Jul-Aug
Date Detail:
Created Date:  2009-07-23     Completed Date:  2009-10-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0400764     Medline TA:  Mycologia     Country:  United States    
Other Details:
Languages:  eng     Pagination:  439-48     Citation Subset:  IM    
River Basin Research Center, Gifu University, Gifu 501-1193, Japan.
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MeSH Terms
Cold Temperature
DNA, Algal / genetics
DNA, Ribosomal Spacer / genetics
Electron Transport Complex IV / genetics
Hyphae / cytology
Pythium / cytology,  genetics,  isolation & purification*
Sequence Analysis, DNA
Soil Microbiology*
Trees / microbiology*
Reg. No./Substance:
0/DNA, Algal; 0/DNA, Ribosomal Spacer; EC Transport Complex IV

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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