ATTACHMENT, COLONIZATION AND PROLIFERATION OF AZOSPIRILLUM-BRASILENSE AND ENTEROBACTER SPP ON ROOT SURFACE OF GRASSES

被引：23

作者：

BILAL, R ^{[1
]}

RASUL, G ^{[1
]}

ARSHAD, M ^{[1
]}

MALIK, KA ^{[1
]}

机构：

[1] NUCL INST AGR BIOL,FAISALABAD,PAKISTAN

来源：

WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY | 1993年 / 9卷 / 01期

关键词：

ATRIPLEX-AMNICOLA; AZOSPIRILLUM-BRASILENSE; COLONIZATION; DIAZOTROPHS; ENTEROBACTER-AGGLOMERANS; ENTEROBACTER SP; PHALARICS-MINOR; SUAEDA-FRUTICOSA;

D O I：

10.1007/BF00656519

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Root colonization studies, employing immunofluorescence and using locally isolated strains, showed that Enterbacter sp. QH7 and Enterobacter agglomerans AX12 attached more readily to the roots of most plants compared with Azospirillum brasilense JM82. Heat treatment of either root or inoculum significantly decreased the adsorption of bacteria to the root surface. Kallar grass and rice root exudates sustained the growth of A. brasilense JM82, Enterobacter sp. QH7 and E. agglomerans AX12 in Hoagland and Fahraeus medium. All the strains colonized kallar grass and rice roots in an axenic culture system. However, in studies involving mixed cultures, A. brasilense JM82 was inhibited by Enterobacter sp. QH7 in kallar grass rhizosphere and the simultaneous presence of Enterobacter sp. QH7 and E. agglomerans AX12 suppressed the growth of A. brasilense JM82 in rice rhizosphere. The bacterial colonization pattern changed from dispersed to aggregated within 3 days of inoculation. The colonization sites corresponded mainly to the areas where root mucigel was present. The area around the point of emergence of lateral roots usually showed maximum colonization.

引用

页码：63 / 69

页数：7

共 27 条

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