Beneficial microbial allelopathies in the root zone: the management of soil quality and plant disease with rhizobacteria

Sturz, A. V.; Christie, B. R.

doi:10.1016/s0167-1987(03)00082-5

Cited by 168 publications

(86 citation statements)

References 173 publications

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“…The rhizosphere and its inhabiting microorganisms fulfil important ecological functions and are responsible for plant growth and health [4]. These bacteria have several mechanisms for plant growth promotion and biocontrol of phytopathogens [5][6][7]. Siderophore production is considered as one of the indirect mechanisms for promotion of plant growth.…”

Section: Introductionmentioning

confidence: 99%

Characterization and Fungal Inhibition Activity of Siderophore from Wheat Rhizosphere Associated Acinetobacter calcoaceticus Strain HIRFA32

et al. 2014

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Acinetobacter calcoaceticus HIRFA32 from wheat rhizosphere produced catecholate type of siderophore with optimum siderophore (ca. 92 % siderophore units) in succinic acid medium without FeSO 4 at 28°C and 24 h of incubation. HPLC purified siderophore appeared as pale yellow crystals with molecular weight [M C NMR, HMQC, HMBC, NOESY and decoupling studies, revealed that siderophore composed of 2,3-dihydroxybenzoic acid with hydroxyhistamine and threonine as amino acid subunits. In vitro study demonstrated siderophore mediated mycelium growth inhibition (ca. 46.87 ± 0.5 %) of Fusarium oxysporum. This study accounts to first report on biosynthesis of acinetobactin-like siderophore by the rhizospheric strain of A. calcoaceticus and its significance in inhibition of F. oxysporum.

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Section: Introductionmentioning

confidence: 99%

Characterization and Fungal Inhibition Activity of Siderophore from Wheat Rhizosphere Associated Acinetobacter calcoaceticus Strain HIRFA32

et al. 2014

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“…The lowest seed yield (740 kg/ha) was that of the treatment in which phosphorous was not applied and neither was inoculation performed. This yield was not significantly different from the 740 kg/ha obtained when no inoculation was performed but phosphorous was applied at 100 kg/ha ( (Sturz & Christie, 2003). Researchers found that adding Pseudomonas fluorescens increased yield of various crop plants.…”

Section: Seed Yieldmentioning

confidence: 74%

Comparison of Response of Canola (Brassica napus L. cv Hyola 401) to Biofertilizer Inoculation in Optimal and Delayed Cropping Dates

Yasari¹

2017

JAS

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In order to compare the effects of phosphate solubilizing bacteria as biofertilizer and mineral phosphorous application in optimal date of sowing with delayed cropping date on canola (Brassica napus L.) growth and productivity, a split-plot experiment using randomized complete block design with three replications was conducted at Dasht-e-Naz Agronomy Research Station in 2014. Four levels of bacterial inoculation (Pseudomonas putida, Pseudomonas fluorescens, singly or in combination) were applied as main plots and five levels of mineral phosphorous application (0, 25, 50, 75, and 100 kg/ha of mineral phosphorous) were applied as sub plots. Canola plant were sown at two dates of sowing, one at optimal date of sowing (Sept. 30, 2014) and the other one month later as delayed cropping (Oct. 30, 2014). The results obtained showed that effects of bacterial inoculation on number of seeds per pod, number of pods on plant, and seed yield were significant at one percent probability level at both sowing dates. Moreover, rates of phosphate application had significant effects on all traits at one percent level. Comparing the means showed that application of mineral P resulted in substantial increase in seed yield. At optimal date of sowing, it was shown that while minimum seed yield obtained at control treatment (1600 kg/ha), the maximum (2980 kg/ha) obtained with interaction effects of application of both bacterial strains along with 75 kg/ha mineral P, having no statistically difference with that of P. fluorescence along with 75 kg/ha mineral P (2940 kg/ha). It was shown that delayed cropping resulted in decreasing canola growth which is reflected in seed yield and yield components. Minimum seed yield at control plot at first date of sowing (1600 kg/ha) decreased to 740 kg/ha in second date of sowing, showing 54% decrease. The maximum seed yield also decreased in delayed cropping, from 2980 kg/ha at Sept. 30, 2014 as compared to 1074 kg/ha at Oct. 30, 2014, showing a 64% decrease. The results obtained showed that an increase in P level, eventually enhanced the seed yield. This increasing trend continued until a threshold level (75 kg/ha of P), after which seed yield showed a declining fashion.

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“…Las bacterias de la zona de raíces son capaces de generar una amplia gama de metabolitos secundarios (enzimas, hormonas, sideróforos y antibióticos, entre otros) que pueden tener una influencia positiva sobre el establecimiento, crecimiento y desarrollo vegetal; mejorar la disponibilidad de minerales y nutrientes (especialmente la solubilización de fosfatos); mejorar la capacidad de fijación de nitrógeno, disminuir la susceptibilidad de las plantas a factores abióticos como las heladas y mejorar la sanidad vegetal mediante la regulación biológica de fitopatóge-nos e inducción de resistencia sistémica en las plantas (Sturz y Nowak, 2000;Sturz y Christie, 2003;Hernández-Rodríguez et al, 2006).…”

Section: Bacterias Y Rizobacterias Promotoras Del Crecimiento Vegetalunclassified

Estrategias biológicas para el manejo de enfermedades en el cultivo de fresa (Fragaria spp.)

Cano

2014

Rev. Colomb. Cienc. Hortic.

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RESUMENLa fresa es un cultivo de alto valor económico, nutricional y medicinal. Sin embargo, es altamente susceptible al ataque de patógenos, por lo cual, uno de los principales retos en el desarrollo del cultivo e incluso en la poscosecha de la fruta, es el manejo de las enfermedades que en su gran mayoría, son de carácter fungoso; seguidas por algunos problemas bacterianos, de nematodos y muy pocos ocasionados por virus. El manejo de estas patologías está fundamentado en el uso de un amplio arsenal de productos para la protección de cultivos comúnmente llamados pesticidas, los cuales generan alto riesgo para la salud humana y ambiental, además de afectar la inocuidad de la fruta e incrementar los costos de producción. En este sentido, surge la necesidad de buscar alternativas para el manejo integrado de enfermedades. Una de las estrategias más estudiadas en los úl-timos años ha sido el uso de antagonistas microbianos con el fin de regular las poblaciones de fitopatógenos en los cultivos. El amplio espectro de estos microorganismos contra diferentes blancos patológicos; la posibilidad de incluirlos antes y durante el establecimiento del cultivo e incluso en la poscosecha; y la multifuncionalidad que presentan no solo como agentes de control biológico, sino como promotores del crecimiento vegetal y biofertilizantes, hacen que la inclusión de esta estrategia biológica en el manejo integrado de enfermedades sea atrayente para los productores, los cuales deben adaptarse a las exigencias de los consumidores que cada día demandan más productos limpios e inocuos. ABSTRACTThe strawberry is a crop of high economic, nutritional and medicinal value. However, it is highly susceptible to attack by pathogens; thus, one of the principal challenges in the development of crops and post-harvest fruits is the management of diseases, mostly fungi followed by bacterial problems, nematodes, and some viruses. The management of these disorders is based on the use of a broad array of products for crop protection that are commonly called pesticides, which generate high risks to humans and environmental health, affect the safety of the fruits and increase production costs. In this sense, there is a need to find alternatives for integrated disease management. One of the most-studied strategies in recent years has been the use of microbial antagonists with the aim of regulating plant pathogen populations in crops. The broad range of organisms used against various pathological targets, the possibility of including them before and during crop establishment and even during post-harvest, and their multi-functionality as not only biological control agents but also as promoters of plant growth and bio-fertilizers make the inclusion of this biological strategy in integrated disease management attractive to producers who must adapt to the demands of consumers for cleaner and safer products that increase every day.

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Beneficial microbial allelopathies in the root zone: the management of soil quality and plant disease with rhizobacteria

Cited by 168 publications

References 173 publications

Characterization and Fungal Inhibition Activity of Siderophore from Wheat Rhizosphere Associated Acinetobacter calcoaceticus Strain HIRFA32

Characterization and Fungal Inhibition Activity of Siderophore from Wheat Rhizosphere Associated Acinetobacter calcoaceticus Strain HIRFA32

Comparison of Response of Canola (Brassica napus L. cv Hyola 401) to Biofertilizer Inoculation in Optimal and Delayed Cropping Dates

Estrategias biológicas para el manejo de enfermedades en el cultivo de fresa (Fragaria spp.)

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