Abstract
Pythium polare sp. nov. is a new heterothallic oomycete species isolated from fresh water and moss from various locations in both the Arctic and Antarctic. This water mould is able to infect stems and leaves of Sanionia moss (Sanionia uncinata). Pythium polare causes brown discolouration in in vitro inoculation tests at 5 °C after 5 weeks of inoculation. It is characterized by globose sporangia with various lengths of discharge tubes releasing zoospores and aplerotic oospores with usually one to five antheridia. The sexual structures are only produced in a dual culture of antheridial and oogonial isolates. Phylogenetic analysis, based on ITS sequencing, places all isolated strains of P. polare in a unique new clade, hence it is considered a novel species. Pythium canariense and Pythium violae are the most closely related species of P. polare based both on morphology and the phylogenetic analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 756-768 |
| Number of pages | 13 |
| Journal | Fungal Biology |
| Volume | 116 |
| Issue number | 7 |
| Early online date | 27 Apr 2012 |
| DOIs | |
| Publication status | Published - Jul 2012 |
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Keywords
- Bipolar distribution
- Moss
- Oomycete
- Plant pathogen
- Pythium polare
- Sanionia uncinata
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Genetics
- Plant Science
- Infectious Diseases
Cite this
Pythium polare, a new heterothallic oomycete causing brown discolouration of Sanionia uncinata in the Arctic and Antarctic. / Tojo, Motoaki; Van West, Pieter; Hoshino, Tamotsu; Kida, Kenichi; Fujii, Hirokazu; Hakoda, Akiho; Kawaguchi, Yuki; Mühlhauser, Hermann A.; Van Den Berg, Albert H.; Küpper, Frithjof C.; Herrero, María L.; Klemsdal, Sonja S.; Tronsmo, Anne Marte; Kanda, Hiroshi.
In: Fungal Biology, Vol. 116, No. 7, 07.2012, p. 756-768.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Pythium polare, a new heterothallic oomycete causing brown discolouration of Sanionia uncinata in the Arctic and Antarctic
AU - Tojo, Motoaki
AU - Van West, Pieter
AU - Hoshino, Tamotsu
AU - Kida, Kenichi
AU - Fujii, Hirokazu
AU - Hakoda, Akiho
AU - Kawaguchi, Yuki
AU - Mühlhauser, Hermann A.
AU - Van Den Berg, Albert H.
AU - Küpper, Frithjof C.
AU - Herrero, María L.
AU - Klemsdal, Sonja S.
AU - Tronsmo, Anne Marte
AU - Kanda, Hiroshi
N1 - Acknowledgements This study was supported from the Japan Society for the Promotion of Science by the grant-in-aid for scientific research Nos. 19510033, 23510032, and 23247012 (MT) the Natural Environment Research Council (NERC) via the SOFI initiative (award NE/F012705/1) (PvW), the University of Aberdeen (HvdB) and the Total Foundation (PvW, FCK).
PY - 2012/7
Y1 - 2012/7
N2 - Pythium polare sp. nov. is a new heterothallic oomycete species isolated from fresh water and moss from various locations in both the Arctic and Antarctic. This water mould is able to infect stems and leaves of Sanionia moss (Sanionia uncinata). Pythium polare causes brown discolouration in in vitro inoculation tests at 5 °C after 5 weeks of inoculation. It is characterized by globose sporangia with various lengths of discharge tubes releasing zoospores and aplerotic oospores with usually one to five antheridia. The sexual structures are only produced in a dual culture of antheridial and oogonial isolates. Phylogenetic analysis, based on ITS sequencing, places all isolated strains of P. polare in a unique new clade, hence it is considered a novel species. Pythium canariense and Pythium violae are the most closely related species of P. polare based both on morphology and the phylogenetic analysis.
AB - Pythium polare sp. nov. is a new heterothallic oomycete species isolated from fresh water and moss from various locations in both the Arctic and Antarctic. This water mould is able to infect stems and leaves of Sanionia moss (Sanionia uncinata). Pythium polare causes brown discolouration in in vitro inoculation tests at 5 °C after 5 weeks of inoculation. It is characterized by globose sporangia with various lengths of discharge tubes releasing zoospores and aplerotic oospores with usually one to five antheridia. The sexual structures are only produced in a dual culture of antheridial and oogonial isolates. Phylogenetic analysis, based on ITS sequencing, places all isolated strains of P. polare in a unique new clade, hence it is considered a novel species. Pythium canariense and Pythium violae are the most closely related species of P. polare based both on morphology and the phylogenetic analysis.
KW - Bipolar distribution
KW - Moss
KW - Oomycete
KW - Plant pathogen
KW - Pythium polare
KW - Sanionia uncinata
UR - http://www.scopus.com/inward/record.url?scp=84863003053&partnerID=8YFLogxK
U2 - 10.1016/j.funbio.2012.04.005
DO - 10.1016/j.funbio.2012.04.005
M3 - Article
C2 - 22749162
AN - SCOPUS:84863003053
VL - 116
SP - 756
EP - 768
JO - Fungal Biology
JF - Fungal Biology
SN - 1878-6146
IS - 7
ER -