ECOLOGICAL CHARACTERISTICS OF THE RHIZOSPHERE MICROFLORA OF MYRIOPHYLLUM-HETEROPHYLLUM

被引：13

作者：

BLOTNICK, JR ^{[1
]}

RHO, J ^{[1
]}

GUNNER, HB ^{[1
]}

机构：

[1] UNIV BRIDGEPORT,DEPT BOT,BRIDGEPORT,CT 06602

来源：

JOURNAL OF ENVIRONMENTAL QUALITY | 1980年 / 9卷 / 02期

关键词：

BACTERIOLOGY - Ecology - SEDIMENTATION - WATER ANALYSIS;

D O I：

10.2134/jeq1980.00472425000900020008x

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Bacterial populations associated with the rhizosphere and rhizoplane of Myriophyllum heterophyllum were studied in the littoral zone of a soft water, mesotrophic lake during the period of active growth of the plants. The composition of the rhizoplane community was found to differ distinctly from that of the adjacent sediments, while the population density of heterotrophic bacteria in each environment did not differ significantly. Higher populations of bacteria capable of nitrate reduction and ammonification did occur in the rhizoplane. Nitrogen-fixing (acetylene-reducing) activity was significantly higher on the root surface than in the sediment. The intensity of the rhizosphere effect was apparently related to the bimodal productivity cycle of Myriophyllum communities.

引用

页码：207 / 210

页数：4

共 26 条

[1] SEASONAL PRODUCTION OF MYRIOPHYLLUM COMPONENT OF LITTORAL OF LAKE WINGRA, WISCONSIN [J].