Production of plant growth promoting substances by Rhizosphere Microorganisms

Mahmoud, S.A.Z.; Ramadan, Elshahat M.; Thabet, F.; Khater, T.

doi:10.1016/s0232-4393(84)80044-x

Cited by 25 publications

(10 citation statements)

References 10 publications

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“…Kampert et al (1975) reported that 55% of bacteria and 86% of fungi isolated from the rhizosphere of Pinus silvestris could produce gibberellins and the derivatives. Actinomycetes and Streptomycetes produce auxins and similar substances (Purushothaman et al, 1974;Mahmoud et al, 1984), gibberellins (Arshad and Frankenberger Jr., 1992), and cytokinins (Bermudez de Castro et al, 1977;Henson and Wheeler, 1977). Some fungi like Aspergillus niger produce gibberellins (El-Bahrawy, 1983).…”

Section: Discussionmentioning

confidence: 99%

Effects of a Microbial Inoculant and Organic Fertilizers on the Growth, Photosynthesis and Yield of Sweet Corn

2001

Journal of Crop Production

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A microbial inoculant known as Effective Microorganisms or EM is a mixed culture of naturally-occurring, beneficial microorganisms (predominantly lactic acid bacteria, yeast, actinomycetes, photosynthetic bacteria and certain fungi) that has been used with considerable success to improve soil quality and the growth and yield of crops, particularly in nature farming and organic farming systems. Despite this success, the exact mechanisms of how this EM elicits such beneficial effects is largely unknown. Consequently, a study was conducted to determine the effects of EM and organic fertilizer on the growth, photosynthesis, and yield of sweet corn (Zea mays L.) under glasshouse conditions, compared with chemical fertilizer. An organic fertilizer consisting of a mixture of oilseed mill sludge, rice husk and bran, and fish processing waste, was inoculated and fermented with EM as the microbial inoculant. The organic fertilizer and chemical fertilizer were then applied to respective pots to compare the growth, yield and physiological response of sweet corn plants. EM applied with the organic fertilizer was shown to promote root growth and activity, and to enhance photosynthetic efficiency and capacity, which resulted in in-Hui-lian Xu is Senior Crop Scientist,

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Section: Discussionmentioning

confidence: 99%

Effects of a Microbial Inoculant and Organic Fertilizers on the Growth, Photosynthesis and Yield of Sweet Corn

2001

Journal of Crop Production

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“…in soils increase the vigour of seedlings (Inbal and Feldman 1982; Jagnow 1987). Microbially produced gibberellins influence plant growth and development (Mahmoud et al 1984; Arshad and Frankenberger 1993) and auxins produced by Azospirillum brasilense affects the growth of plants belonging to paoceae (Barbieri et al 1988). Extensive investigations on the biological activities of humic substances showed that they also posses plant growth stimulating property (Chen and Aviad 1990).…”

Section: Introductionmentioning

confidence: 99%

Microbial diversity of vermicompost bacteria that exhibit useful agricultural traits and waste management potential

2012

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Vermicomposting is a non-thermophilic, boioxidative process that involves earthworms and associated microbes. This biological organic waste decomposition process yields the biofertilizer namely the vermicompost. Vermicompost is a finely divided, peat like material with high porosity, good aeration, drainage, water holding capacity, microbial activity, excellent nutrient status and buffering capacity thereby resulting the required physiochemical characters congenial for soil fertility and plant growth. Vermicompost enhances soil biodiversity by promoting the beneficial microbes which inturn enhances plant growth directly by production of plant growth-regulating hormones and enzymes and indirectly by controlling plant pathogens, nematodes and other pests, thereby enhancing plant health and minimizing the yield loss. Due to its innate biological, biochemical and physiochemical properties, vermicompost may be used to promote sustainable agriculture and also for the safe management of agricultural, industrial, domestic and hospital wastes which may otherwise pose serious threat to life and environment.

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“…Microorganisms as the main components of the soils have beneficial effects both on soil structures and plant growth (Wu et al 2009;Xiao et al 2011). One of the roles of microorganisms is to help cement soil particles together into aggregates, promote infiltration of water and soil aeration, which arises from increased organic matter decomposition (Martens Garcia de Salamon et al 2001;Glick 1995;Khan et al 2002;Mahmoud et al 1984;Wani et al 2007). The beneficial role of microorganisms in salt-affected soils is undertaken by halotolerant and halophilic microorganisms.…”

Section: Discussionmentioning

confidence: 99%

Isolation and Characterization of Salt-Tolerant Bacterial Strains in Salt-Affected Soils of Erzurum, Turkey

Orhan

Güllüce

2015

Geomicrobiology Journal

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In the current study, 18 salt-tolerant bacteria were isolated from salt-affected soil of Erzurum, Turkey. Forty-five bacterial isolates were identified and characterized by conventional and molecular techniques. These 45 sequenced isolates were identified as 16 different genus including Bacillus (19 isolates), Staphylococcus (3 isolates), Halobacillus (4 isolates), Zhihengliuella (2 isolates), Oceanobacillus (2 isolates), Halomonas (1 isolate), Nesterenkonia (2 isolates), Promicromonospora (2 isolates), Jeotgalibacillus (2 isolates), Planococcus (2 isolates), Virgibacillus (1 isolate), Terribacillus (1 isolate), Thalassobacillus (1 isolate), Marinibacillus (1 isolate), Gracilibacillus (1 isolate) and Microbacterium (1 isolate). According to the results obtained, investigated bacterial strains have high salt tolerance and significant enzyme activities that can improve soil nutrient cycling and soil fertility. The current article provides the evaluation and diversity of the potential halotolerant and halophilic bacterial strains in salt-affected soils of Erzurum, Turkey.

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Production of plant growth promoting substances by Rhizosphere Microorganisms

Cited by 25 publications

References 10 publications

Effects of a Microbial Inoculant and Organic Fertilizers on the Growth, Photosynthesis and Yield of Sweet Corn

Effects of a Microbial Inoculant and Organic Fertilizers on the Growth, Photosynthesis and Yield of Sweet Corn

Microbial diversity of vermicompost bacteria that exhibit useful agricultural traits and waste management potential

Isolation and Characterization of Salt-Tolerant Bacterial Strains in Salt-Affected Soils of Erzurum, Turkey

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