Plant growth stimulation by inoculation with symbiotic and associative rhizosphere microorganisms

Höflich, G.; Wiehe, Wolfgang; Kühn, Günter

doi:10.1007/bf01923476

Cited by 153 publications

(60 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, the soil type, growth stage, cropping practices (such as tillage and crop rotation), and other environmental factors (8,14,20,22,27,52) seem to influence the composition of the microbial community in the rhizosphere. Rhizosphere microorganisms exert strong effects on plant growth and health by nutrient solubilization, N 2 fixation, or the production of plant hormones (19,36). Increased plant productivity also results from the suppression of deleterious microorganisms by antagonistic bacteria, while soil-borne pathogens can greatly reduce plant growth.…”

mentioning

confidence: 99%

Bulk and Rhizosphere Soil Bacterial Communities Studied by Denaturing Gradient Gel Electrophoresis: Plant-Dependent Enrichment and Seasonal Shifts Revealed

Smalla

Wieland

Buchner

et al. 2001

Appl Environ Microbiol

1,035

608

View full text Add to dashboard Cite

The bacterial rhizosphere communities of three host plants of the pathogenic fungus Verticillium dahliae, field-grown strawberry (Fragaria ananassa Duch.), oilseed rape (Brassica napus L.), and potato (Solanum tuberosum L.), were analyzed. We aimed to determine the degree to which the rhizosphere effect is plant dependent and whether this effect would be increased by growing the same crops in two consecutive years. Rhizosphere or soil samples were taken five times over the vegetation periods. To allow a cultivationindependent analysis, total community DNA was extracted from the microbial pellet recovered from root or soil samples. 16S rDNA fragments amplified by PCR from soil or rhizosphere bacterium DNA were analyzed by denaturing gradient gel electrophoresis (DGGE). The DGGE fingerprints showed plant-dependent shifts in the relative abundance of bacterial populations in the rhizosphere which became more pronounced in the second year. DGGE patterns of oilseed rape and potato rhizosphere communities were more similar to each other than to the strawberry patterns. In both years seasonal shifts in the abundance and composition of the bacterial rhizosphere populations were observed. Independent of the plant species, the patterns of the first sampling times for both years were characterized by the absence of some of the bands which became dominant at the following sampling times. Bacillus megaterium and Arthrobacter sp. were found as predominant populations in bulk soils. Sequencing of dominant bands excised from the rhizosphere patterns revealed that 6 out of 10 bands resembled gram-positive bacteria. Nocardia populations were identified as strawberry-specific bands.

show abstract

mentioning

confidence: 99%

Bulk and Rhizosphere Soil Bacterial Communities Studied by Denaturing Gradient Gel Electrophoresis: Plant-Dependent Enrichment and Seasonal Shifts Revealed

Smalla

Wieland

Buchner

et al. 2001

Appl Environ Microbiol

1,035

608

View full text Add to dashboard Cite

show abstract

“…Mangroves also harbor microorganisms that are important in nutrient cycling (31,40). Many species of terrestrial plants influence microbial communities inhabiting their roots; this phenomenon is known as the rhizosphere effect (33,39). Microorganisms in turn are essential for plant growth and organic matter turnover, and they use plant root exudates as a nutrient source (39,70).…”

mentioning

confidence: 99%

“…Many species of terrestrial plants influence microbial communities inhabiting their roots; this phenomenon is known as the rhizosphere effect (33,39). Microorganisms in turn are essential for plant growth and organic matter turnover, and they use plant root exudates as a nutrient source (39,70). Little is known, however, about the impact of mangrove plants on microbial rhizosphere communities (31,32,72).…”

mentioning

confidence: 99%

Denaturing Gradient Gel Electrophoresis and Barcoded Pyrosequencing Reveal Unprecedented Archaeal Diversity in Mangrove Sediment and Rhizosphere Samples

Pires

Cleary

Almeida

et al. 2012

Appl Environ Microbiol

220

109

View full text Add to dashboard Cite

cMangroves are complex ecosystems that regulate nutrient and sediment fluxes to the open sea. The importance of bacteria and fungi in regulating nutrient cycles has led to an interest in their diversity and composition in mangroves. However, very few studies have assessed Archaea in mangroves, and virtually nothing is known about whether mangrove rhizospheres affect archaeal diversity and composition. Here, we studied the diversity and composition of Archaea in mangrove bulk sediment and the rhizospheres of two mangrove trees, Rhizophora mangle and Laguncularia racemosa, using denaturing gradient gel electrophoresis (DGGE) and pyrosequencing of archaeal 16S rRNA genes with a nested-amplification approach. DGGE profiles revealed significant structural differences between bulk sediment and rhizosphere samples, suggesting that roots of both mangrove species influence the sediment archaeal community. Nearly all of the detected sequences obtained with pyrosequencing were identified as Archaea, but most were unclassified at the level of phylum or below. Archaeal richness was, furthermore, the highest in the L. racemosa rhizosphere, intermediate in bulk sediment, and the lowest in the R. mangle rhizosphere. This study shows that rhizosphere microhabitats of R. mangle and L. racemosa, common plants in subtropical mangroves located in Rio de Janeiro, Brazil, hosted distinct archaeal assemblages.

show abstract

“…Van Berkum and Bohlool (1980) reported that diazotrophic bacteria in the rhizosphere utilise the products of nitrogen fixation for their own growth but do not release it while they are alive, the other reason could be the production of phytohormone in the rhizosphere by the microorganisms . Also P. agglomerans and A. chroococcum were able to produce phytohormones in pure culture (Scholz-Seidel and Ruppel 1992, Höflich et al 1994, Pathak et al 1995, Kumar and Narula 1999.…”

Section: Plant Weight and Nutrient Uptake Under Hydroponic Conditionsmentioning

confidence: 99%

Comparison of the effectiveness of wheat roots colonization by Azotobacter chroococcum and Pantoea agglomerans using serological techniques

Narula¹,

Remus²,

Deubel³

et al. 2007

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

Colonization of Azotobacter chroococcum Mac 27 strain on wheat roots was monitored using double antibody sandwich enzyme linked immunosorbent assay (DAS ELISA) and immuno-fluorescence in terms of colonization sites, migration and survival of the bacteria. Furthermore, the effectivity of inoculation of A. chroococcum and Pantoea agglomerans D5/23 strain on wheat plant parameters under greenhouse conditions was investigated. Studies with DAS ELISA revealed that root tip had significant titre of inoculants as compared to the basal root parts. A. chroococcum colonized roots as well as soil and also migrated along with roots. An overall increase in plant growth was observed with inoculation of these bacteria. Both A. chroococcum and P. agglomerans were found to increase plant dry matter, nitrogen and phosphate uptake.

show abstract

Plant growth stimulation by inoculation with symbiotic and associative rhizosphere microorganisms

Cited by 153 publications

References 46 publications

Bulk and Rhizosphere Soil Bacterial Communities Studied by Denaturing Gradient Gel Electrophoresis: Plant-Dependent Enrichment and Seasonal Shifts Revealed

Bulk and Rhizosphere Soil Bacterial Communities Studied by Denaturing Gradient Gel Electrophoresis: Plant-Dependent Enrichment and Seasonal Shifts Revealed

Denaturing Gradient Gel Electrophoresis and Barcoded Pyrosequencing Reveal Unprecedented Archaeal Diversity in Mangrove Sediment and Rhizosphere Samples

Comparison of the effectiveness of wheat roots colonization by Azotobacter chroococcum and Pantoea agglomerans using serological techniques

Contact Info

Product

Resources

About