An aquatic species, Pythium toruloides sp. nov., from Algeria

Self Cite

Pythium campanulatum sp. nov. was isolated from some soil samples taken in the rhizosphere of maize (Zea mays) in north-eastern India. This species is characterized by the absence of zoospores and sporangia, antheridial branches wrapping around the oogonia leaving one to two campanulate antheridial cells after fertilization, and aplerotic oospores. The ITS region of its rDNA is comprised of 922 bases. This oomycete is closely related to Pythium orthogonon, Pythium nunn and Pythium toruloides. However, it has its own characteristic features and is completely devoid of zoospores. Taxonomic description of this new species and its comparison with related oomycetes, together with the sequence of the PCR-amplified internal transcribed region (spacers ITS1, ITS2, and the gene 5.8S) of its rDNA are given here. ß

Section: Introductionsupporting

confidence: 59%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pythium campanulatumsp. nov., isolated from the rhizosphere of maize, its taxonomy, ITS region of rDNA, and comparison with related species

Mathew

Singh

Paul

2003

Self Cite

“…The isolate CI-07 is the type culture. Fungi were recovered from the soil samples by the usual baiting techniques with boiled hemp seed halves as described elsewhere [3,10,11]. A bit of the fungal mycelium was inoculated upon solid media like potato carrot agar (PCA) and potato dextrose agar (PDA).…”

Section: Fungal Isolatesmentioning

confidence: 99%

ITS region of Pythium canariense sp. nov., its morphology and its interaction with Botrytis cinerea

Paul

2002

A new species Pythium canariense (CI-07), isolated from soil samples taken in the San Nicolas region of the Canary islands (Gran Canaria, Spain), is being described here. This species is characterised by its spherical to pyriform, intercalary to catenulate sporangia, smooth-walled terminal oogonia supplied with monoclinous and diclinous antheridia which at times are branched and wrap around the female gametangia. The fungus has an antagonistic effect on Botrytis cinerea, the grey mould fungus. Morphological features are being given here together with the sequence of the complete internal transcribed spacer region of the nuclear ribosomal DNA of the fungus, its comparison with related species, and some aspects of its antagonistic behaviour with B. cinerea. ß

“…The isolate F-83.1 is the type culture and was isolated from a soil sample taken in Auxerre in the north of the Burgundy. The isolation was done by the usual baiting techniques with boiled hemp seed halves [3,10,11]. A bit of the fungal mycelium was inoculated upon solid media like potato carrot agar (PCA) and potato dextrose agar (PDA).…”

Section: Fungal Isolatesmentioning

confidence: 99%

A new species of Pythium with filamentous sporangia having pectinolytic activities, isolated in the Burgundy region of France

Paul¹

2001

A new species, Pythium pectinolyticum (F-83.1), isolated from soil samples taken in the Burgundy region is being described here. This species is characterised by its filamentous non-inflated type of sporangia, smooth-walled mostly catenulate oogonia and very rare antheridia. This fungus is a very slow-growing organism on most of the solid media, but it grows well in liquid media and also on those containing pectin as the sole source of carbon. Morphological features are described here together with the sequences of the internal transcribed spacer 1 region of the nuclear ribosomal DNA of the fungus, its comparison with related species, and its pectinolytic behaviour. ß