An investigation on the soil microbe populations from an agricultural inning\narea at the Pearl River estuary in Guangdong province, China was conducted\nvia high through-put sequencing. The results revealed abundant diversity in\nthe soil bacterial and fungal populations. In total, 197103 sequence tags were\nobtained from soil samples, most of which represented bacterial genera Actinomycetes\n, Bacillus and Marinobacter , while a majority of 118378 tags obtained\nwere derived from fungal genera Clostridium , Devosia , Bradyrhizobium,\nBdellovibrio , Phenylobacterium , Penicillium , and Emericella . Furthermore,\nnine physiological indexes (pH, available phosphorous, basic-group nitrogen,\navailable potassium, catalase, sucrose, urease, phosphatase, and organic\nmatters) were measured in three soil samples, and the association between\nthese physiological indexes and microbe population composition was\nexamined. The results revealed obvious inter-sample differences associated\nwith ten dominating microbial groups: genera Clostridium , Devosia , Bradyrhizobium,\nBdellovibrio , Phenylobacterium , and Penicillium were mainly impacted\nby pH (with a positive correlation), genera Sphingomonas and Acinetobacter\nmainly by available phosphorous (positive correlation), and genera\nGemmatimonas and Pseudomonas by both pH and available phosphorous\n(negative correlation). Our study suggested that regulation of microbial species/\npopulations might help improve soil environment to facilitate the growth\nof crops� above-ground parts, and this provides practical information for inning\nagriculture.
Loading....