BACTERIA-GRAZING AMEBAS INSITU IN THE RHIZOSPHERE

被引：33

作者：

FOSTER, RC ^{[1
]}

DORMAAR, JF ^{[1
]}

机构：

[1] AGR CANADA,RES STN,LETHBRIDGE T1J 4B1,ALBERTA,CANADA

来源：

BIOLOGY AND FERTILITY OF SOILS | 1991年 / 11卷 / 02期

关键词：

AMEBAS; PROTOZOA; RHIZOSPHERE; NUTRIENT CYCLING; BIOCONTROL; MICROAGGREGATES;

D O I：

10.1007/BF00336368

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

An ultrastructural investigation of amoebae in situ in the rhizosphere showed that the protozoa are closely associated with soil aggregates and produce long pseudopodia that penetrate micropores. This could partly explain why bacteria are generally confined to the interiors of microaggregates. The presence of cytologically intact and partly digested bacteria in the food vacuoles indicates that rhizosphere bacteria are both ingested and digested by the amoebae. This digestion could lead to the recycling of P and N immobilized in rhizosphere microorganisms.

引用

页码：83 / 87

页数：5

共 21 条

[1] AMEBAS FROM A TAKE-ALL SUPPRESSIVE SOIL WHICH FEED ON GAEUMANNOMYCES-GRAMINIS-TRITICI AND OTHER SOIL FUNGI [J].