Beneficial and deleterious effects of HCN-producing pseudomonads on rhizosphere interactions

Schippers, B.; Bakker, Albert W.; Bakker, Peter A. H. M.; Peer, R. van

doi:10.1007/978-94-011-3336-4_47

Cited by 55 publications

(46 citation statements)

References 43 publications

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“…Glycine is the prerequisite for CN production in fungi and bacteria (Casteric 1977). Production of HCN by Pseudomonas bacteria can enhance plant growth through inhibiting pathogens activities (Schippers et al 1990). This is the first time that such PGPR species are isolated from the Iranian soils.…”

Section: Introductionmentioning

confidence: 99%

Plant growth-promoting activities of fluorescent pseudomonads, isolated from the Iranian soils

et al. 2009

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Fluorescent pseudomonads are among the most influencing plant growth-promoting rhizobacteria in plants rhizosphere. In this research work the plant growthpromoting activities of 40 different strains of Pseudomonas fluorescens and Pseudomonas putida, previously isolated from the rhizosphere of wheat (Triticum aestivum L.) and canola (Brassica napus L.) and maintained in the microbial collection of Soil and Water Research Institute, Tehran, Iran, were evaluated. The ability of bacteria to produce auxin and siderophores and utilizing P sources with little solubility was determined. Four strains of Wp1 (P. putida), Cfp10 (Pseudomonas sp.), Wp150 (P. putida), and Wp159 (P. putida) were able to grow in the DF medium with ACC. Thirty percent of bacterial isolates from canola rhizosphere and 33% of bacterial isolates from wheat rhizosphere were able to produce HCN. The results indicate that most of the bacteria, tested in the experiment, have plant growth-promoting activities. This is the first time that such PGPR species are isolated from the Iranian soils. With respect to their great biological capacities they can be used for wheat and canola inoculation in different parts of the world, which is of very important agricultural implications.

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Section: Introductionmentioning

confidence: 99%

Plant growth-promoting activities of fluorescent pseudomonads, isolated from the Iranian soils

et al. 2009

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“…Control plate was also maintained with 0.05% NaCl (w/v). For growth promoting attributes, phosphate solubilization (Mehta and Nautiyal 2001), siderophore production (You et al 2004), nitrate reduction (Glass et al 1997), cyanogenesis (Schippers et al 1990) and antimicrobial activity ([15 mm) against Gram-positive bacteria Bacillus subtilis and fungus namely Macrophomina phaseolina, Fusarium ciceri and Rhizoctonia solani were evaluated. Inhibition zone of antimicrobial activity was measured in millimeters (Madigan et al 2009).…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Diversity of culturable Streptomycetes from wheat cropping system of fertile regions of Indo-Gangetic Plains, India

Malviya

Yadav

Yandigeri

et al. 2010

World J Microbiol Biotechnol

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Streptomycetes is one of the most important genera, representing up to 70% population among all soil actinomycetes. We investigated the genotypic diversity of culturable Streptomycetes, freshly isolated from thirtyeight different soil samples (wheat cropping system) from Indo-Gangetic Plains of India. A total of 238 morphologically distinct actinomycetes colonies were isolated and clustered together by restriction fragment length polymorphism analysis of 16S rRNA gene. Identification of representative isolates from each cluster was carried out by micro/macroscopic analysis as well as biochemical characterization, and further confirmed by 16S rRNA sequencing (sequences were submitted in public database, NCBI).

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“…Soil bacteria produce a wealth of metabolites, a few of which have been identiWed and characterized. An example of a plant growth inhibitory compound produced by some pseudomonads is hydrogen cyanide (Schippers et al 1990), but pseudomonads have also been found to produce other unidentiWed phytotoxins reducing root growth (Frederickson and Elliott 1985;Åström et al 1993), and production of thaxtomin A that also reduces seedling root growth (KrasnoV et al 2005) is well-known among streptomycetes. Our results suggest that the ratio between bacteria producing such inhibitory substances and bacteria producing plant root growth stimulating compounds increased with plant age.…”

Section: Discussionmentioning

confidence: 97%

“…antibiotics antagonistic against plant pathogenic fungi (Schippers et al 1990). However, plants roots are also faced with plant pathogenic bacteria as well as bacteria producing plant deleterious compounds such as cyanide (Schippers et al 1990). Hence, the composition of the microbial community in the rhizosphere may be of importance for plant growth.…”

Section: Introductionmentioning

confidence: 99%

“…plant hormones like auxin or cytokinin (Frankenberger and Arshad 1995), or indirect through microbial production of e.g. antibiotics antagonistic against plant pathogenic fungi (Schippers et al 1990). However, plants roots are also faced with plant pathogenic bacteria as well as bacteria producing plant deleterious compounds such as cyanide (Schippers et al 1990).…”

Section: Introductionmentioning

confidence: 99%

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Decreasing prevalence of rhizosphere IAA producing and seedling root growth promoting bacteria with barley development irrespective of protozoan grazing regime

Vestergård¹,

Bjørnlund²,

Henry³

et al. 2007

Plant Soil

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Barley was grown in soil with either bacteria and a mixed protozoan community (Mixed protozoa) or bacteria and a single vahlkampWid amoebal species (Single amoeba). We assessed the inXuence of plant age (day 29, 43 and 57 after sowing) on two aspects of rhizosphere bacterial functioning: (1) the proportion of indole-3-acetic acid (IAA) producing bacteria and (2) the eVect of mixed rhizosphere bacterial assemblages on barley seedling root growth in an agar based assay. The proportion of IAA producers was signiWcantly lower at day 57 than at day 29 and 43, and mixed bacterial assemblages extracted from rhizospheres of 29 days old plants were signiWcantly less harmful to seedling growth than bacterial assemblages from older plants. Hence both assays indicated that bacterial communities from rhizospheres of older plants were less beneWcial for root growth than bacterial communities from younger plants. Genetic Wngerprinting of rhizosphere bacterial communities was compared by use of length heterogeneity polymerase chain reaction (LH-PCR). This analysis showed a clear succession from the inoculum bacterial community with a rather low diversity to a community with much higher diversity at day 29. However, diversity did not change after day 29, and no relationship between protozoan treatment nor plant age and genetic Wngerprinting was found.

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Beneficial and deleterious effects of HCN-producing pseudomonads on rhizosphere interactions

Cited by 55 publications

References 43 publications

Plant growth-promoting activities of fluorescent pseudomonads, isolated from the Iranian soils

Plant growth-promoting activities of fluorescent pseudomonads, isolated from the Iranian soils

Diversity of culturable Streptomycetes from wheat cropping system of fertile regions of Indo-Gangetic Plains, India

Decreasing prevalence of rhizosphere IAA producing and seedling root growth promoting bacteria with barley development irrespective of protozoan grazing regime

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