Comparisons of effects of four methods for ancient DNA extraction;

Ancient DNA Study and its Progress in Systematic and Evolutionary Biology;

The ancient DNA (aDNA), the most important genetic information of ancient human, has been widely used in the studies of human origin, evolution, racial character, migration and diseases, and herefrom the molecular archaeology has developed rapidly.

Emerging Field of Ancient DNA Study;

Ancient DNA is referred to the DNA from archaeology remains,and the ancient DNA techniques is a new academic subject based on the methods and techniques of molecular biology that is resulted from molecular biology,archaeology,anthropology and paleontology.

In this note, we present our suggestion and prospects on collecting and analyzing ancient DNA.

In light of this recent progress,we review several currently active research frontiers:deep continental subsurface microbiology,microbial ecology in saline lakes,microbial formation of dolomite,geomicrobiology in dry deserts,fossil DNA and its use in recovery of paleoenvironmental conditions,and geomicrobiology of oceans.