Interactions of Azospirillum spp. in soils:: a review

被引:80
作者
Bashan, Y [1 ]
机构
[1] Ctr Biol Res NW CIB, La Paz 23000, Baja Calif Sur, Mexico
关键词
Azospirillum; motility; plant-growth promoting bacteria; root exudates; soil bacteria;
D O I
10.1007/s003740050549
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
This review summarizes;;es and discusses the current knowledge and the,as yet, unanswered questions on the interactions of Azospirillum spp. in bulk soil (but not in the rhizosphere). It contains sections on the isolation of these bacteria from tropical to temperate soils, and on their short- and long-term persistence in bulk soil. The interactions of these bacteria with soil particles and minerals such as clay, sand and Ca, and the effect: of soil pH, soil redox potential, and the cation exchange capacity of the soil on them is demonstrated. Data is presented on the distribution of Azospirillum spp. in soils, on their production of Eibrillar material essential for anchoring the cells to soil particles, on the effects of soil irrigation, and of external soil treatments, and on the effect of soil C and C used in bacterial inoculants on the cells. It shows that root exudates possibly govern bacterial motility in the soil. Finally, the effect of pesticide applications, the relationships with other soil microorganisms such as Bdelovibrio spp., Bradyrhizobium spp., and phages, and the potential use of a community-control model of Azospirillum spp. in soil and in the rhizosphere is suggested.
引用
收藏
页码:246 / 256
页数:11
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