Plant Growth Promoting Rhizobacteria: Applications and Perspectives In Agriculture

Zahir, Zahir A.; Arshad, Muhammad; Frankenberger, W. T.

doi:10.1016/s0065-2113(03)81003-9

Cited by 431 publications

(225 citation statements)

References 238 publications

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“…The fertilizers, according to growth and development of plants, are commonly called yield-promoting bacteria (Zahir et al 2004;Nadeem et al 2014). Some of these bacteria species are widely used in agriculture so as to increase seeds' production as well as yield, and in disease control.…”

Section: Introductionmentioning

confidence: 99%

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Influence of plant-growth-promoting bacteria on germination, growth and nutrients’ uptake ofOnobrychis sativaL. under drought stress

Delshadi

Ebrahimi

Shirmohammadi

2017

Journal of Plant Interactions

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The study was conducted to investigate the effect of growth-promoting bacteria (Azotobacter vinelandii = A, Pantoea agglomerans + P. putida = P, combined A + P, control) on the germination, growth and nutrient uptake of Onobrychis sativa L. under drought stress (field capacity (FC), 0.7 FC, 0.4 FC). The results showed that the highest and lowest germination rate (GR) was related to the P and control treatments in FC level, respectively. The maximum root and shoot length at the FC level was related to the treatment A. In the A + P treatment, the maximum shoot dry weight was measured in 0.7 FC level. The lowest root dry weight was also related to the A + P treatment in the FC level. Bio-fertilizers had the maximum impact in increasing the nutrients uptake in 0.7 FC and FC levels. The fertilizers in 0.7 FC and FC levels increased the plant traits and played no significant role in mitigating the effects of drought stress. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

“…and Pseudomonas spp. are the most important bacteria that, in addition to increasing soil mineral elements, with the production of matters regulating growth, affect the development and yield of plants (Zahir et al 2004;Hayat et al 2010). …”

Section: Introductionmentioning

confidence: 99%

Influence of plant-growth-promoting bacteria on germination, growth and nutrients’ uptake ofOnobrychis sativaL. under drought stress

Delshadi

Ebrahimi

Shirmohammadi

2017

Journal of Plant Interactions

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“…The four main metabolic pathways dependent of tryptophan are; tryptophol, ryptamine, indole-3-pyruvic acid and indole-3-acetamide pathway (Bartel, 1997). Emerging evidence illustrate that organisms which produces low quantity of auxins as a result of absence of LTryptophan have the propensity of turning up high amount of auxins when augmented with L-tryptophan, especially in the presence of viable strain of Rhizobium (Zahir et al 2010;Zahir et al, 2004). Importantly, it interesting to note that the indigenous auxin (IAA) produced by plant though will contribute to plant growth, it might still not be necessarily enough for the optimal performance of the plant (Pilet and Saugy,l987).…”

Section: Auxinmentioning

confidence: 99%

Plant Growth Promoting Rhizobacteria (PGPR): A Bioprotectant bioinoculant for Sustainable Agrobiology. A Review

Odoh¹

2017

Int. J. Adv. Res. Biol. Sci

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Plant growth promoting rhizobacteria (PGPR) involves the utilization of large array of soil bacteria to improve yield and plant growth. As free living and symbiotic rhizobacteria, PGPR colonizes extracellular and/or intracellular rhizoenvironment in search for carbon source while indirectly aiding plant growth. In the past few decades, focus has been on developing a biosafety agro base approach void of continuous burden on soil micro flora as a result of agrochemical application. However, with clear understanding of PGPR mechanisms of action; (i) biofertilization (ii) biostimulation (iii) and biocontrol, it create more hope on the possibility of curbing food insecurity, clean environmental sustenance and lower public health risk. Seeds or soil application of PGPRs inoculant enhances directly phosphates solubilization, atmospheric nitrogen fixation and secretion of plant hormones (indole acetic acid, gibberellins, cytokinins and ethylene) needed for growth and adaptation in stressed environment. As soil pathogen consistently rival the roles of these organisms, they (PGPRs)have developed over time wide spectrum of strategies in the form of systemic resistance, iron, space and nutrient competition, antibiotics synthesis, lytic acid production and hydrogen cyanide for efficient food productivity. In view of this, the review widen our scope on the use of PGPR as bioinoculant in sustainable agro practice and to serve as a wakeup call for it reception and implementation in the tropics where paucity of data on it use has long prevailed.

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“…Ha- (1988) reported that the inconsistency of the effects of Azospirillum on root elongation could be the result of the antagonistic actions of IAA and other growth regulators produced by bacteria at any particular condition. Several studies have shown the beneficial effects of PGPRs are dependent on matching specific strains of PGPR with crop species and even further to specific cultivars, soils, inoculation methods and growing conditions (Chanway et al 1988;Nowak 1998;Zahir et al 2003). Apart from IAA, Azospirillum spp.…”

Section: Effects Of Inoculation On Root and Shoot Growthmentioning

confidence: 99%

Early seedling growth response of lettuce, tomato and cucumber to Azospirillum brasilense inoculated by soaking and drenching

Mangmang

Deaker

Rogers

2015

Hort. Sci. (Prague)

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Mangmang J.S., Deaker R., Rogers G. (2015): Early seedling growth response of lettuce, tomato and cucumber to Azospirillum brasilense inoculated by soaking and drenching. Hort. Sci. (Prague), 42: 37-46.This study evaluated the effects of three A. brasilense strains (i.e. Sp7, Sp7-S and Sp245) on the early seedling growth of lettuce, tomato and cucumber. Seeds were inoculated by soaking and drenching before and after sowing, respectively. Results show that inoculation effect varied greatly with plant species, inoculation methods and PGPR strains which could be dependent on inoculum concentration and IAA (indole-3-acetic acid) production. Generally, the magnitude of inoculation impact on the early growth of vegetables was more pronounced with Sp7-S, followed by Sp245 and Sp7. In particular, Sp7-S and Sp245 strongly enhanced root and shoot growth, germination value and vigour of tomato when inoculated by soaking. Sp245 increased the level of endogenous plant IAA of cucumber and lettuce. Despite the diverse crop responses to inoculation methods, soaking appeared to be a better technique, and majority of the strains demonstrated more consistent beneficial effects on tomato.

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Plant Growth Promoting Rhizobacteria: Applications and Perspectives In Agriculture

Cited by 431 publications

References 238 publications

Influence of plant-growth-promoting bacteria on germination, growth and nutrients’ uptake ofOnobrychis sativaL. under drought stress

Influence of plant-growth-promoting bacteria on germination, growth and nutrients’ uptake ofOnobrychis sativaL. under drought stress

Plant Growth Promoting Rhizobacteria (PGPR): A Bioprotectant bioinoculant for Sustainable Agrobiology. A Review

Early seedling growth response of lettuce, tomato and cucumber to Azospirillum brasilense inoculated by soaking and drenching

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