N2-fixation by ammonium-excreting Azospirillum brasilense in auxine-induced root tumours of wheat (Triticum aestivum L.)

Christiansen-Weniger, C.

doi:10.1007/bf00336274

Cited by 24 publications

(1 citation statement)

References 18 publications

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“…Rhizobacteria and endophytic bacteria can affect plant growth either directly or indirectly. Factors that directly promote plant growth include biological nitrogen fixation (Christiansen-Weneger 1992), solubilization of soil phosphorus and iron (De Freitas et al 1997), synthesis of several different phytohormones (Bastian et al 1998) and a number of enzymes, such as 1-aminocyclopropane-1-carboxylate (ACC) deaminase (Safronova et al 2006). Indirect promotion of plant growth has shown that some bacteria can produce antibiotics to suppress diseases caused by plant pathogens (Mavrodi et al 2001), degrade pollutants, such as phenol (Wang et al 2007), compete for nutrients and suitable niches on the root surface (Glick 1995) and induce plant systemic resistance (Bakker et al 2007;De Vleesschauwer et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Promotion of plant growth, biological control and induced systemic resistance in maize by Pseudomonas aurantiaca JD37

et al. 2012

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Some Pseudomonas aurantiaca strains have been found to facilitate plant growth. A P. aurantiaca JD37 strain isolated from a suburb of Shanghai, China, was found to effectively colonize the rhizosphere soil and internal roots of maize (Zea mays L.) and promote maize growth. Agar diffusion assays and biocontrol effect experiments showed that strain JD37 had significant antagonistic activity against Bipolaris maydis, as well as a high biocontrol effect on southern maize leaf blight caused by B. maydis. PCR detection, associated with reverse-phase high-performance liquid chromatography assays, showed that strain JD37 might produce a number of important antibacterial substances, such as phenazine-1-carboxylic acid, pyrrolnitrin and 2,4-diacetylphloroglucinol. The crude bacterial extracts and the cell-free supernatant of strain JD37 were found to induce resistance in maize against B. maydis and reduce plant disease. Our results indicate the potential of some bacteria for producing bacterial compounds that serve as inducers of disease resistance, which is an attractive alternative to the application of chemical fertilizers, pesticides and supplement in agricultural practices.

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Section: Introductionmentioning

confidence: 99%

Promotion of plant growth, biological control and induced systemic resistance in maize by Pseudomonas aurantiaca JD37

et al. 2012

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Plant Probiotics for Nutrient Acquisition by Agriculturally Important Grasses: A Comprehensive Review of the Science and the Application

Swift

Denton

Melino

2019

Annual Plant Reviews Online

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Intensification of agricultural land and the overuse of inorganic fertilisers has led to soil acidification, depletion of organic matter, and environmental pollution. Approaches to protect soil health, including the enhancement of microbial diversity, are integral to improving crop productivity and food security. Metagenomics has rapidly improved our understanding of soil microbial diversity and function, while genetic techniques have helped to dissect the complex signal exchange between microorganisms and plants. This article presents and evaluates reported beneficial effects of plant growth‐promoting bacteria (PGPB), focussing on those capable of mobilising or solubilising nutrients and/or stimulating plant growth when applied to agriculturally important grasses. The agricultural industry has capitalised on these scientific advancements, generating microbial formulations for specific crop responses. However, scientific methodologies must be applied in order to overcome inherent limitations of many PGPBs including their inability to be cultured, their poorly defined or multiple modes of action, a low level of integration with the crop partner, and an unpredictability in translating beneficial plant responses to the field. Novel approaches such as engineered rhizospheres, enhancing endophytic systems, cereal nodule development, and the use of inoculant consortiums will be necessary to sustain growth in the biofertiliser industry.

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The Genus Azospirillum

Hartmann¹,

Baldani²

2006

The Prokaryotes

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N2-fixation by ammonium-excreting Azospirillum brasilense in auxine-induced root tumours of wheat (Triticum aestivum L.)

Cited by 24 publications

References 18 publications

Promotion of plant growth, biological control and induced systemic resistance in maize by Pseudomonas aurantiaca JD37

Promotion of plant growth, biological control and induced systemic resistance in maize by Pseudomonas aurantiaca JD37

Plant Probiotics for Nutrient Acquisition by Agriculturally Important Grasses: A Comprehensive Review of the Science and the Application

The Genus Azospirillum

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