Distribution of autotrophic picoplankton and its effect factors in the waters around Leizhou Peninsula in summer and winter An overview of the phylogeny and diversity of eukaryotes Distribution Pattern of Photosynthetic Picoplankton and Heterotrophic Bacteria in the Northern South China Sea Cloning and Expression Analysis of a Human Putative Tumor Suppressor Gene Homologue from Rice SUMMER DISTRIBUTION OF PICOPHYTOPLANKTON IN THE NORTH YELLOW SEA