Pythium monoclinum Abrinbana, Abdollahz. & Badali, 2020
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publication ID |
https://doi.org/ 10.5252/cryptogamie-mycologie2020v41a11 |
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persistent identifier |
https://treatment.plazi.org/id/038C879F-FFE3-0054-FEED-FCFC399FFBCB |
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treatment provided by |
Felipe |
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scientific name |
Pythium monoclinum Abrinbana, Abdollahz. & Badali |
| status |
sp. nov. |
Pythium monoclinum Abrinbana, Abdollahz. & Badali , sp. nov.
( Fig. 5 View FIG )
MYCOBANK. — MB 823189.
TYPUS. — Iran. East Azarbaijan Province, Islami Island, from uncultivated soil; 8.V.2013; coll. F. Badali, IRAN 16695 F as dried culture in Iranian Research Institute of Plant Protection, ex-type culture (IRAN 2421 C).
ADDITIONAL SPECIMENS EXAMINED. — Iran. East Azarbaijan Province, Islami Island, from uncultivated soil; 8.V.2013; coll. F. Badali, living culture in Iranian Research Institute of Plant Protection ( IRAN 2405 C) and Westerdijk Fungal Biodiversity Institute (CBS 143584).
Iran. East Azarbaijan Province: Islami Island, from uncultivated soil; 8. V.2013; coll. F. Badali, living culture in Collection of Urmia University ( CUU 77).
ETYMOLOGY. — Name refers to the mostly monoclinous antheridia.
DESCRIPTION
Colonies
On PCA submerged with a radiate pattern and on CMA partially submerged without a special pattern. Main hyphae up to 5 µm diam.
Sporangia and zoospores
Not observed.
Hyphal swellings
Globose, occasionally subglobose, terminal or intercalary, 15-26 µm diam. (av. 21.65 µm).
Oogonia
Smooth-walled, globose, subglobose, rarely elongated, mostly terminal, occasionally subterminal or intercalary, rarely in chains, sometimes oogonial stalks consisting a swollen element below the terminal oogonia, globose oogonia 16-26 µm diam. (av. 20.94 µm), elongated oogonia up to 35 µm long.
Antheridia
1-2 per oogonium, mostly monoclinous, originating at various distances from the oogonia, occasionally arising from inflated part of oogonial stalk located immediately below oogonium, rarely diclinous, occasionally sessile, antheridial stalks mostly bending towards oogonia. Antheridial cells clavate, swollen, elongated, sometimes with constriction, 10-22 × 5-11 µm (av. 14.92 × 6.62 µm).
Oospores
Globose, subglobose, rarely peanut-shaped, plerotic, rarely aplerotic, usually one but rarely two per oogonium, globose oospores 10-24 µm diam. (av. 18.71 µm), elongated oospores up to 32 µm long, the oospore wall up to 2 µm thick.
Daily growth
On PCA 3 mm at 5°C, 6 mm at 10°C, 9 mm at 15°C, 11 mm at 20°C, 14 mm at 25°C, 10 mm at 30°C, 7 mm at 35 and 0 at 40°C. The isolates were not viable at 40°C.
NOTES
Differs from other known Pythium species by presence of globose to elongated smooth-walled oogonia, a swollen element in oogonial stalks below terminal oogonia, mostly monoclinous antheridia that occasionally arising from swollen part of oogonial stalk and their stalk mostly bending towards oogonia, (sub) globose or peanut-shaped oospores, mostly plerotic oospores and 1-2 oospores per oogonium.
| V |
Royal British Columbia Museum - Herbarium |
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