Stimulation of wheat growth and N fixation through Azospirillum and Rhizobium inoculation: A field trial with 15N techniques

Galal, Y. G. M.; El-Ghandour, I. A.; El-Akel, E. A.

doi:10.1007/0-306-47624-x_323

Cited by 13 publications

(13 citation statements)

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“…Combined inoculation with N 2 -fixing and phosphate solubilizing bacteria were more effective than a single microorganism for providing a more balanced nutrition for plants [19,174]. There are numerous examples in wheat whereby synergistic effects of multiple PGPRs are observed [97,175,176]. Among those, notable is the combined inoculation of mixtures and biofilmed bio-inoculants (Anabaena torulosa + Pseudomonas striata and/or Anabaena torulosa + Azotobacter chroococcum) were superior over single inoculation and chemical fertilizer control in term of plant growth and nutrient uptake [177].…”

Section: Co-inoculation Of Multiple Pgprsmentioning

confidence: 99%

The Role of Soil Beneficial Bacteria in Wheat Production: A Review

Çakmakçı¹,

Turan²,

Kıtır³

et al. 2017

Wheat Improvement, Management and Utilization

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Free-living plant growth-promoting rhizobacteria (PGPR) have favourable effect on plant growth, tolerance against stresses and are considered as a promising alternative to inorganic fertilizer for promoting plant growth, yield and quality. PGPR colonize at the plant root, increase germination rates, promote root growth, yield, leaf area, chlorophyll content, nitrogen content, protein content, tolerance to drought, shoot and root weight, and delayed leaf senescence. Several important bacterial characteristics, such as biological nitrogen fixation, solubilization of inorganic phosphate and mineralization of organic phosphate, nutrient uptake, 1-aminocydopropane-1-carboxylic acid (ACC) deaminase activity and production of siderophores and phytohormones, can be assessed as plant growth promotion traits. By efficient use, PGPR is expected to contribute to agronomic efficiency, chiefly by decreasing costs and environmental pollution, by eliminating harmful chemicals. This review discusses various bacteria acting as PGPR, their genetic diversity, screening strategies, working principles, applications for wheat and future aspects in terms of efficiency, mechanisms and the desirable properties. The elucidation of the diverse mechanisms will enable microorganisms developing agriculture further.

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Section: Co-inoculation Of Multiple Pgprsmentioning

confidence: 99%

The Role of Soil Beneficial Bacteria in Wheat Production: A Review

Çakmakçı¹,

Turan²,

Kıtır³

et al. 2017

Wheat Improvement, Management and Utilization

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“…Whitelaw (2000) stated that the bacterial genera Pseudomonas, Bacillus, Rhizobium and Enterobacter, along with Penicillium and Aspergillus fungi, are the most powerful P solubilizers. The use of these PSB as bio-inoculants will increase the available P in soil to minimize P fertilizer applications, production costs and at the same time reduce environmental pollution and promotes sustainable agriculture (Galal et al, 2001). The rhizospheric microorganisms can positively play a role in plant growth promotion and enhance N and P in green gram (Phaseolus aureus) (Zaidi and Khan, 2006).…”

Section: Introductionmentioning

confidence: 99%

Contribution of phosphate-solubilizing bacteria in phosphorus bioavailability and growth enhancement of aerobic rice

Panhwar

Othman

Rahman

et al. 1970

Span. j. agric. res.

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The phosphate-solubilizing bacteria (PSB) can solubilize insoluble forms of phosphorous (P) into simple soluble forms that can be taken up by plants. The main focus of this study was to determine the effect of PSB on P availability in presence of different P rates for improved and sustainable rice (Oryza sativa L.) production under aerobic conditions. Triple superphosphate (TSP) at three levels (0, 30 and 60 kg ha -1 ) and two isolated PSB (Bacillus sp.) strains (PSB9 and PSB16) were tested in glasshouse conditions. Surface sterilized seeds of aerobic rice (M9 variety) were planted in plastic pots containing 3 kg of soil for 60 days. PSB strains exhibited capability of producing organic acids from soil and plant roots and increased yield of aerobic rice. Significantly, high P solubilization (28.7 mg kg -1 ) and plant uptake (7.94 mg kg -1 ) was found in PSB16 inoculated treatments at 30 kg ha -1 of P 2 O 5 . In this treatment were also observed high leaf chlorophyll content (34.57), photosynthesis rate (7.59 µmol CO 2 m -2 s -1 ) and root development. Isolated strains showed potential to make higher availability of P and increase content of organic acids from soil and roots at lower doses of TSP in aerobic rice. With the production of organic acids (oxalic, malic, succinic and propionic) higher amounts of P in the soil solution increased plant P uptake and resulted in higher plant biomass. The application of these potential inoculants in an appropriate combination with chemical fertilizers could be considered in organic and sustainable aerobic rice cultivation system. Additional key words: organic acids; solubilization; strains; triple superphosphate; uptake. ResumenContribución de las bacterias solubilizadoras de fosfato a la biodisponibilidad del fósforo y a la mejora del crecimiento del arroz aeróbico Las bacterias solubilizadoras de fosfato (PSB) son capaces de solubilizar formas insolubles de fósforo (P), para que puedan ser absorbidas por las plantas. Se estudió el potencial de dos cepas de PSB (Bacillus sp.), PSB9 y PSB16, para la solubilización del P y el aumento del crecimiento del arroz aeróbico (Oryza sativa L.) en condiciones de invernadero, utilizando superfosfato triple (TSP) a tres niveles (0, 30 y 60 kg ha -1 ). Se sembraron semillas de arroz aeró-bico (variedad M9) en macetas de plástico con 3 kg de suelo. Las cepas PSB fueron capaces de producir ácidos orgánicos a partir del suelo y de las raíces de las plantas y aumentaron el rendimiento del arroz aeróbico. Se encontró una alta y significativa solubilización de P (28,7 mg kg -1 ) y de absorción por la planta (7,94 mg kg -1 ) en los tratamientos inoculados con PSB16 utilizando 30 kg ha -1 de P 2 O 5 . En este tratamiento también se observó un alto contenido de clorofila (34,57), tasa de fotosíntesis (7,59 mmol CO 2 m -2 s -1 ) y desarrollo de raíces. Las cepas mostraron potencial para una mayor disponibilidad de P y aumento de ácidos orgánicos del suelo y las raíces a bajas dosis de TSP en el arroz aeróbico. Con la producción de ácidos ...

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“…A significant increase of total and upper nodule numbers was observed at different concentrations of Rhizobium inoculum (Dardanelli et al, 2008). Several greenhouse and field experiments demonstrated the potential of co-inoculation to increase grain yield of various legumes (Bashan and Holguin, 1997;Galal et al, 2002;Itzigsohn et al, 1993;Sarig et al, 1986;Yahalom et al, 1989).…”

Section: Co-inoculation Of Plant Growth-promoting Bacteriamentioning

confidence: 97%