Rhodovulum mangrovi sp. nov., a phototrophic alphaproteobacterium isolated from a mangrove forest sediment sample.

A novel Gram-staining-negative, purple non-sulfur bacterium, strain AK41(T), was isolated from a sediment sample collected from Coringa mangrove forest, Andhra Pradesh, India. A red-brownish-coloured culture was obtained on modified Pfennig medium after enrichment with 2 % NaCl and 0.3 % pyruvate under 2000 lx illumination. Individual cells were ovoid-rod-shaped and non-motile. Bacteriochlorophyll a and carotenoids of the spheroidene series were present as photosynthetic pigments. Strain AK41(T) was halophilic and grew photoheterotrophically with a number of organic compounds as carbon sources and electron donors. It was unable to grow photoautotrophically. It did not utilize sulfide or thiosulfate as electron donors. The fatty acids were found to be dominated by C16 : 0 and C18 : 1ω7c. Strain AK41(T) contained phosphatidylglycerol, phosphatidylethanolamine, an unknown aminolipid and four unknown lipids as polar lipids. Q-10 was the predominant respiratory quinone. The DNA G+C content of strain AK41(T) was 68.9 mol%. 16S rRNA gene sequence analysis indicated that strain AK41(T) was a member of the genus Rhodovulum and was closely related to Rhodovulum sulfidophilum, with 96.0 % similarity to the type strain; the 16S rRNA gene sequence similarity to the type strains of other species of the genus Rhodovulum was 93.9-95.8 %. Phylogenetic analyses indicated that strain AK41(T) clustered with the type strains of Rhodovulum marinum, Rdv. kholense, Rdv. sulfidophilum and Rdv. visakhapatnamense with sequence similarity of 95.9-96.2 %. Based on data from the current study, strain AK41(T) is proposed to represent a novel species of the genus Rhodovulum, for which the name Rhodovulum mangrovi sp. nov. is proposed. The type strain of Rhodovulum mangrovi is AK41(T) ( = MTCC 11825(T) = JCM 19220(T)).

B.2.16 is a non-lethal modifier of the Dark82 mosaic eye phenotype in Drosophila melanogaster.

Genetic screens have been used to identify genes involved in the regulation of different biological processes. We identified growth mutants in a Flp/FRT screen using the Drosophila melanogaster eye to identify conditional regulators of cell growth and cell division. One mutant identified from this screen, B.2.16, was mapped and characterized by researchers in undergraduate genetics labs as part of the Fly-CURE. We find that B.2.16 is a non-lethal genetic modifier of the Dark82 mosaic eye phenotype.

A Case of Ollier's Disease with P53 Mutation Positive and IDH1 (R132H) Negative Multicentric Gliomas.

Ollier disease is a rare nonhereditary disorder characterized by multiple enchondromas (enchondromatosis). To report a rare case of Ollier disease with gliomas and its mutation analysis. We hereby report a young lady who presented with seizures. She had a past history of multiple bony swellings in the right foot (operated) and swelling over the anterior chest wall for the past 15 years. MRI brain revealed multiple expansile T2/FLAIR hyperintense lesions in right superior and middle frontal gyri, left basifrontal lobe, and left precuneus in the cortical-subcortical location suggestive of glioma. She underwent biopsy which revealed left basifrontal anaplastic astrocytoma, not otherwise specified, WHO grade III, IDH1 (R132H) negative, P53 mutation positive, and ATRX loss of expression. We hereby report a rare case of Ollier disease with multicentric intracranial glioma-IDH1 (R132H) negative, P53 mutation positive, and ATRX loss of expression.