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Properties Of The Rhodopseudomonas Palustrisstrains Isolated From An Alkaline Lake In Turkey, Gönül Çeti̇nkaya Dönmez, Ayten Öztürk, Lütfü Çakmakçi
Properties Of The Rhodopseudomonas Palustrisstrains Isolated From An Alkaline Lake In Turkey, Gönül Çeti̇nkaya Dönmez, Ayten Öztürk, Lütfü Çakmakçi
Turkish Journal of Biology
31 photoheterotrophic bacteria were isolated from Lake Aksehir sediment. Identification of the strains was based on morphological properties, motility and pigment composition, and also physiological properties such as carbon utilization and ability to respire anaerobically and aerobically in the dark. All strains were identified as Rhodopseudomonas palustris, but some strains were distinct from R. palustris with regard to vitamin requirement, malate utilization and aerobic growth in the dark. Until now, R. palustris had not been reported from an alkaline lake, and the strains growing alkaline pH (9) could be new strains of R. palustris.
Isolation And Abundance Of Unicellularcyanobacteria From Mosquito Development Sites, Gönül Çeti̇nkaya Dönmez, Ayşe Elmaci, Olcay Obali, Ayten Öztürk, Lütfü Çakmakçi
Isolation And Abundance Of Unicellularcyanobacteria From Mosquito Development Sites, Gönül Çeti̇nkaya Dönmez, Ayşe Elmaci, Olcay Obali, Ayten Öztürk, Lütfü Çakmakçi
Turkish Journal of Biology
The genus composition of cyanobacteria (particularly Chroococcus sp.) and their abundance in mosquito breeding sites at Lake Mogan (Ankara, Turkey) increased from August to September. Six unicellular cyanobacteria that had different morphological properties were isolated and succesfully cultivated. According to the mode of division, these six strain were classified as the represantatives of subgroup 1 (order Choroococcales). One of the isolates was identified as Synechococcus sp. and one as Gloeocapsa sp., and four were identified as Synechocystic sp. One of the four Synechocystis spp. was shown to be capable of heterotrophic growth.
Investigation On The Isolation And Identification Of The Listeria Species In The White And Civil Cheeses Purchased From Erzurum Region, A. Aydan Kara, Ömer Faruk Algur, Mükerrem Kaya
Investigation On The Isolation And Identification Of The Listeria Species In The White And Civil Cheeses Purchased From Erzurum Region, A. Aydan Kara, Ömer Faruk Algur, Mükerrem Kaya
Turkish Journal of Biology
In this study, 34 white cheeses and 16 civil (local name) cheeses purchased from markets and shops in Erzurum during the period of January 1995-April 1996 were analysed. The samples were streaked directly onto LSA and Palcam Agar media in Petri Plates and incubated at 37C° for 48 hours. After the incubation, the growing colonies on LSA-agar plates were examined by Henry's Modified IIIumination Method while collonies on Palcam agar were examined by naked eye. Typical colonies were selected and used for several biochemical tests. As a result, it was found that only one sample (2.94%) of the white cheeses …