Chromium–Plant-Growth-Promoting Rhizobacteria Interactions: Toxicity and Management

Khan, Mohammad Saghir; Zaidi, Almas; Wani, Parvaze Ahmad

doi:10.1007/978-3-7091-0730-0_4

Cited by 7 publications

(2 citation statements)

References 103 publications

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“…The possible toxic impact of heavy metals on plant includes (1) disintegration of cell organelles and (2) disruption of membranes and physiological processes like (a) photosynthesis, (b) inactivation of protein synthesis, (c) inactivation of respiration and carbohydrate metabolism, and (d) nutrient uptake (Jing et al 2007;Wani et al 2007;Wani et al 2008;Khan et al 2012). Metal accumulation also results in 262 M. Panwar et al reduced microbial population (Wani and Khan 2013) thereby affecting the soil fertility and making it unsuitable for sustainable agriculture (Cheng 2003).…”

Section: Metal Stressmentioning

confidence: 99%

Phosphate Solubilizing Microorganisms

Khan¹,

Zaidi²,

Musarrat³

2014

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Section: Metal Stressmentioning

confidence: 99%

Phosphate Solubilizing Microorganisms

Khan¹,

Zaidi²,

Musarrat³

2014

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“…This metal is widely used in leather tanning and textile industries. Chemically chromium exists in +2 to +6 valence states [1]. Hexavalent chromium is mutagenic, carcinogenic and 10-100 times more potent than trivalent form [2].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Cr (VI) remediation potential of <i>Eichornia</i> sp in conjunction with chromium-resistant bacterial strains

Batool¹,

Tabassum²,

Ali³

2017

Trop. J. Pharm Res

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Purpose: Evaluation of Cr (VI) removal by indigenous chromium resistant bacterial strains alone and in combination with Eichornia sp. Methods: Three chromium resistant bacterial strains S-4 Ochrobactrum grignonense, SF-5 Bacillus sp. and S-6 Ochrobactrum pseudogrignonenses were isolated from industrial effluent. The isolated chromium-resistant bacterial strains were subjected to heavy-metal resistance profiling. Cr (VI) reduction was evaluated in mobilized as well as immobilized forms. The phytoremediation potential of Eichornia sp. in conjunction with chromium resistant bacterial isolates was also determined. Fourier transform infra-red (FTIR) spectroscopy was performed to rule out the involvement of various functional groups in the binding activity of Cr (VI). Results: Three bacterial strains resisted up to 1000 µg/mL of potassium dichromate (K2CrO4). Bacterial strains S-4, SF-5 and S-6 showed significant Cr (VI) removal in mobilized state (84.93, 85.85 and 83.97 % respectively) compared with immobilized state (41.27, 37.99, 37.96 %)

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Microbial Consortium of Plant Growth-Promoting Rhizobacteria Improves the Performance of Plants Growing in Stressed Soils: An Overview

Panwar

Tewari²,

Nayyar³

2014

Phosphate Solubilizing Microorganisms

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Soil and associated stress conditions not only influence dwelling microbial populations and soil ecosystems but also affect growth and yield of plants. Major soil stress includes salinity, drought, and metal contamination. Due to burgeoning populations and expanding food demands, it has become imperative to alleviate the stressful soil conditions so that the crop production is increased and, consequently, the food demands are fulfilled. Different strategies are followed to resolve this problem, and one such approach involves exploiting microbial potential for plant's benefit. The multifunctional microscopic life-forms are already known for their applications in industries, medicine, and agricultural field. One of the major attributes of microbes from agronomic point of view is their ability to solubilize difficultly available forms of soil phosphorus. Phosphate-solubilizing microbes are also known to produce enzymes, siderophores, and growth hormones; embellish plant growth and biocontrol activity; and improve soil properties. Such microorganisms possessing attributes, beneficial for plants are termed as plant growth-promoting rhizobacteria (PGPR). There are plentiful reports on bacterialmediated plant growth promotion under nonstressed conditions although fewer reports are available on their effects under stressed condition. The bacterial ability to enhance tolerance of plants in stressed soils and the impact of PGPR consortium (mixture) on different crops are highlighted. The major idea here is to consolidate the fact that PGPR consortium can be used directly in stress-affected soil with an aim to refurbish soil conditions to foster crop productivity in stressed soils.

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Chromium–Plant-Growth-Promoting Rhizobacteria Interactions: Toxicity and Management

Cited by 7 publications

References 103 publications

Phosphate Solubilizing Microorganisms

Phosphate Solubilizing Microorganisms

Evaluation of Cr (VI) remediation potential of <i>Eichornia</i> sp in conjunction with chromium-resistant bacterial strains

Microbial Consortium of Plant Growth-Promoting Rhizobacteria Improves the Performance of Plants Growing in Stressed Soils: An Overview

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