Annona Reticulata Research Articles

Natural Products as a Source of Potential Cancer Chemotherapeutic and Chemopreventive Agents

Recent advances in the chemistry of novel bioactive natural products are reported. This research is directed to the exploration of plants with confirmed activity in bioassays designed to detect potential cancer chemotherapeutic and chemopreventive agents. Structural work and chemical studies are reported for several cytotoxic agents from the plants Annona densicoma, Annona reticulata, Claopodium crispifolium, Polytrichum obioense, and Psorospermum febrifugum. Studies are also reported based on development of a mammalian cell culture benzo[a]pyrene metabolism assay for the detection of potential anticarcinogenic agents from natural products. In this study a number of isoflavonoids and flavonoids with antimutagenic activity have been discovered.

Revision of the early steps of reticuline biosynthesis

Precursor feeding experiments to Annona reticulata leaves demonstrated that coclaurine and reticuline are both derived from the common intermediate norcoclaurine; furthermore (S)-coclaurine was found to be the specific precursor to the major classes of isoquinoline alkaloids: protoberberines, benzophenanthridines and morphinandienones.

Assessment of Arbuscular Mycorrhizal Association in Some Fruit Plants in Bangladesh

 Rhizosphere soils of 19 fruit plants from horticultural farm of Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur were assessed for arbuscular mycorrhiza (AM) spore population and determining colonization in their roots. The spore numbers recorded ranged from 48.0 (Citrus limon) to 1,050 (Annona reticulata) per 100 g soil in 2004, 41.0 (Citrus grandis) to 916.7 (Phyllanthus emblica) in 2005 and 44.3 (Citrus grandis) to 575.0 (Syzygium samarangense, white) in 2006. A considerable variation was observed in average spore numbers recorded in three consecutive years. Different fruit plants showed different percentages of root colonization by AM fungi. Among all the fruit plants, the highest colonization (86.7%) was found in Syzygium jambos and Elaeocarpus floribundus and the lowest colonization (20.0%) was recorded in Syzygium samarangense (red). Keywords: Arbuscular mycorrhiza (AM), Colonization, Spore population, Fruit plantsDOI: http://dx.doi.org/10.3329/bjm.v24i1.1234 Bangladesh J Microbiol, Volume 24, Number 1, June 2007, pp 34-37