Genome analysis and gene nblA identification of Microcystis aeruginosa myovirus (MaMV-DC) reveal the evidence for horizontal gene transfer events between cyanomyovirus and host.

The genome sequence, genetic characterization and nblA gene function of Microcystis aeruginosa myovirus isolated from Lake Dianchi in China (MaMV-DC) have been analysed. The genome DNA is 169 223 bp long, with 170 predicted protein-coding genes (001L–170L) and a tRNA gene. About one-sixth of these genes have homologues in the host cyanobacteria M.

[Partial biological characteristics and algicidal activity of an algicidal bacterium].

An algicidal bacterium was isolated from freshwater (Lake Donghu in Wuhan) and coded as A01. The morphology of the algicidal bacterium was observed using optical microscope and electron microscopes, the results showed that A01 was rod-shaped, approximately 1.5 microm in length and 0.

[Influence of temperature on spermatogenesis-related genes in spermatogonia cultured in vitro].

Objective: To investigate the influence of temperature on the expressions of c-kit and PI3K in spermatogonia cultured in vitro at 32 degrees C and 37 degrees C, and provide basic scientific data for the mechanism of spermatogenic impairment due to body temperature (37 degrees C).

Methods: Isolated spermatogenic cells were cultured in vitro at 32 degrees C and 37 degrees C, and their adherence, proliferation and morphologic changes were observed and recorded under the inverted phase contrast microscope. At 8 days, the spermatogonia were separated by Percoll density gradient centrifugation and the differential adhesion method.

[Synthesis and characterization of chitosan-imine-palladacycle].

Chitosan was grafted with salicylaldehyde to obtain Schiff base. The Schiff base reacted with Li2 PdCl4 in methanol to synthesize chitosan-imine-palladacycle. The structure of chitosan, schiffbase and chitosan-imine-palladacycle was characterized by IR, XRD, DTA-TG, fluorescence and XPS.