While much work have been done on Catharan­ thus roseus (Apocynaceae) resulting in the isolation of about 100 alkaloids, there is persistent interest in the plant and new alkaloids continue to be reported. In continuation of our isolation and synthetic studies on the alkaloids of Catharanthus roseus [1 — 15], we have isolated a new alkaloid from the leaves of this plant by a combination of sele...

The long-lived greater flamingo (Phoenicopterus roseus) is famous for performing conspicuous group displays during which adults try to acquire a new mate each year with varying success. We examined variation in the sexual display complexity (SDC) of wild flamingos aged between 4 and 37 yrs. SDC was defined as the product of richness (the number of different display movements) and versatility (t...

The manuscript published by Microb Biotechnol, volume 10, highlights the relevance of the fungus Nigrospora sphaerica, an endophyte isolated from Catharanthus roseus, as an alternative source to obtain vinblastine, a compound used in chemotherapy schemes to treat several types of cancer. Authors showed that purification of vinblastine from extracts of the fungus has higher activity and yield in...

Pontibacter roseus is a member of genus Pontibacter family Cytophagaceae, class Cytophagia. While the type species of the genus Pontibacter actiniarum was isolated in 2005 from a marine environment, subsequent species of the same genus have been found in different types of habitats ranging from seawater, sediment, desert soil, rhizosphere, contaminated sites, solar saltern and muddy water. Here...

We discuss properties of infection processes on scale-free networks, relating them to the node-connectivity distribution that characterizes the network. Considering the epidemiologically important case of a disease that confers permanent immunity upon recovery, we derive analytic expressions for the final size of an epidemic in an infinite closed population and for the dependence of infection p...

In the present study, an attempt was made to investigate the anti-bacterial activity of Nyctanthes arbortristis, Nerium oleander and Catharathus roseus. The crude drug powder extracts of the leaves of the above plants were taken for the study. The antibacterial activity was performed by using both gram positive and gram gative organism viz., B.subtilis and E.coli respectively. The Phytochemical...

The carotenoid 4'-hydroxyechinenone (4'-hydroxy-beta, beta-carotene-4-one) was isolated from Micrococcus roseus. It is proposed as an intermediate between echinenone and canthaxanthin.

ABSTRACT- A pot experiment was conducted to elucidate the effects of single and co-inoculation of maize plant with Bacillus mycoides and Micrococcus roseus, indigenous to HMs contaminated soils, on the plant growth and uptake of essential nutrients and Ni by maize in the soil polluted by 250 and 500 mg Ni kg-1. At each level of Ni contamination, shoot dry weight and nutrients uptake significant...

Phytochemical screening and gas chromatography-mass spectrometry (GC-MS) methods were used to determine the phytochemical components of various extracts stems roots Catharanthus roseus. Preliminary n-hexane, chloroform, ethyl acetate methanol roseus carried out identify class compounds present in each extract. The results exhibited that steroids, terpenoids, flavonoids phenolic found every extr...

Hydroxylation of tabersonine at the C-16 position, catalyzed by tabersonine 16-hydroxylase (T16H), initiates the synthesis of vindoline that constitutes the main alkaloid accumulated in leaves of Catharanthus roseus. Over the last decade, this reaction has been associated with CYP71D12 cloned from undifferentiated C. roseus cells. In this study, we isolated a second cytochrome P450 (CYP71D351) ...