Studies on the Microbial Community in the Rhizosphere Soil of Dongxiang Wild Rice  

东乡普通野生稻根际微生物群落特征的研究(英文)

作　　者：戴菲[1] 黄运红[1] 彭伟梦[1] 李鹿鸣[1] 龙中儿[1] 

机构地区：[1]江西师范大学生命科学学院,江西南昌330022

出　　处：《Agricultural Science & Technology》2011年第4期527-529,共3页农业科学与技术（英文版）

基　　金：Supported by Jiangxi Natural Science Fund Program(2009GQN0068)~~

摘　　要：[Objective] The aim was to study the characteristics of microbial community in the rhizosphere soil of Dongxiang wild rice（Oryza rufipogon Griff.）.[Method] The microbial biomass carbon and nitrogen was estimated by the chloroform fumigation extraction method;the microbial community composition and Nitrogen cycling microbial functional groups were investigated by the Dilution plate culture method and the most probable number methods respectively.[Result] The microbial biomass carbon and nitrogen,in rhizosphere soil of Dongxiang Wild Rice was 83.02±18.23 mg/kg soil and 16.98±2.54 mg/kg soil,which was lower than that of ordinary cultivated rice;The relationship between the number of culturable microbial groups was bacteriaactinomycetesfungi,and the Nitrogen cycling microbial physiological groups was as the following：ammonifying bacteriaaerobic azotobacteriadenitrobacteriaanaerobic azotobacterianitrobacterianitrosobacteria.[Conclusion] The microbial community in the rhizosphere soil of Dongxiang Wild Rice was different from that of the ordinary cultivated rice.[目的]研究东乡普通野生稻(Oryza rufipogon Griff.)根际微生物群落特征。[方法]采用氯仿熏蒸浸提法测定根系微生物生物量碳、氮;采用平板稀释培养法测定群落组成;采用最大或然计数法测定微生物生理群。[结果]东乡野生稻根际微生物生物量碳、氮平均值分别为83.02和16.98mg/kg(土),较普通栽培稻低;根际可培养微生物中细菌>放线菌>真菌;氮素生理群中氨化细菌>好氧固氮菌>反硝化细菌>嫌气性固氮菌>硝化细菌>亚硝化细菌。[结论]东乡野生稻根际微生物群落组成与普通栽培稻相比有差异。

关 键 词：Dongxiang Wild Rice Rhizosphere microorganisms Community composition 

分 类 号：S511.9[农业科学—作物学]