Consortium of plant growth‐promoting bacteria improves spinach ( Spinacea oleracea L.) growth under heavy metal stress conditions

2019 ◽  
Author(s):  
Stefan Shilev ◽  
Ivelina Babrikova ◽  
Todor Babrikov
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Heavy Metal Stress ◽  
Stress Conditions ◽  
Metal Stress ◽  
Plant Growth Promoting Bacteria ◽  
Spinacea Oleracea ◽  
Plant Growth Promoting ◽  
Growth Promoting

Beneficial role of plant growth promoting bacteria and arbuscular mycorrhizal fungi on plant responses to heavy metal stress

2009 ◽  
Vol 55 (5) ◽  
pp. 501-514 ◽  
Author(s):  
Elisa Gamalero ◽  
Guido Lingua ◽  
Graziella Berta ◽  
Bernard R. Glick
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Heavy metal pollution is a major worldwide environmental concern that has recently motivated researchers to develop a variety of novel approaches towards its cleanup. As an alternative to traditional physical and chemical methods of environmental cleanup, scientists have developed phytoremediation approaches that include the use of plants to remove or render harmless a range of compounds. Both plant growth promoting bacteria (PGPB) and arbuscular mycorrhizal fungi (AMF) can be used to facilitate the process of phytoremediation and the growth of plants in metal-contaminated soils. This review focuses on the recent literature dealing with the effects of plant growth-promoting bacteria and AM fungi on the response of plants to heavy metal stress and points the way to strategies that may facilitate the practical realization of this technology.

scholarly journals Differential effects of plant growth promoting rhizobacteria on chilli (Capsicum annuum L.) seedling under cadmium and lead stress

2018 ◽  
Vol 5 (4) ◽  
pp. 182-190 ◽  
Author(s):  
Amit Kumar Pal ◽  
Arpita Chakraborty ◽  
Chandan Sengupta
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Growth Parameters ◽  
Plant Growth Promoting Rhizobacteria ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Growth Enhancement ◽  
Chilli Plant ◽  
Plant Growth Promoting ◽  
Growth Promoting

Rapidly increasing worldwide industrialization has led to many environmental problems by the liberation of pollutants such as heavy metals. Day by day increasing metal contamination in soil and water can be best coped by the interaction of potential plant growth promoting rhizobacteria for plant growth. The effect of plant growth promoting rhizobacteria (PGPR) treatment on growth of chilli plant subjected to heavy metal stress was evaluated. Growth of chilli plant was examined with inoculation of two isolated PGPR (Lysinibacillus varians and Pseudomonas putida) under cadmium (30 ppm), lead (150 ppm) and the combination of heavy metal (Cd+Pb) stress condition. Among these two bacteria L. varians produced slightly better plant growth enhancement. Different growth parameters of chilli plants were reduced under heavy metal stress. Whereas, Cd and Pb tolerant PGPR inoculation, in root associated soil, enhanced plant growth development under test heavy metal contaminated soil. So, these PGPRs may easily be used as bio-fertilizers which will nullify the adverse effect of heavy metal on plant growth.

scholarly journals Complete Genome Sequence of Pseudomonas psychrotolerans CS51, a Plant Growth-Promoting Bacterium, Under Heavy Metal Stress Conditions

2020 ◽  
Vol 8 (3) ◽  
pp. 382 ◽  
Author(s):  
Sang-Mo Kang ◽  
Sajjad Asaf ◽  
Abdul Latif Khan ◽  
Lubna ◽  
Adil Khan ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Transport System ◽  
Genome Sequence ◽  
Heavy Metal Stress ◽  
Function Prediction ◽  
Metal Stress ◽  
Protein Coding ◽  
Plant Growth Promoting ◽  
Growth Promoting

In the current study, we aimed to elucidate the plant growth-promoting characteristics of Pseudomonas psychrotolerans CS51 under heavy metal stress conditions (Zn, Cu, and Cd) and determine the genetic makeup of the CS51 genome using the single-molecule real-time (SMRT) sequencing technology of Pacific Biosciences. The results revealed that inoculation with CS51 induced endogenous indole-3-acetic acid (IAA) and gibberellins (GAs), which significantly enhanced cucumber growth (root shoot length) and increased the heavy metal tolerance of cucumber plants. Moreover, genomic analysis revealed that the CS51 genome consisted of a circular chromosome of 5,364,174 base pairs with an average G+C content of 64.71%. There were around 4774 predicted protein-coding sequences (CDSs) in 4859 genes, 15 rRNA genes, and 67 tRNA genes. Around 3950 protein-coding genes with function prediction and 733 genes without function prediction were identified. Furthermore, functional analyses predicted that the CS51 genome could encode genes required for auxin biosynthesis, nitrate and nitrite ammonification, the phosphate-specific transport system, and the sulfate transport system, which are beneficial for plant growth promotion. The heavy metal resistance of CS51 was confirmed by the presence of genes responsible for cobalt-zinc-cadmium resistance, nickel transport, and copper homeostasis in the CS51 genome. The extrapolation of the curve showed that the core genome contained a minimum of 2122 genes (95% confidence interval = 2034.24 to 2080.215). Our findings indicated that the genome sequence of CS51 may be used as an eco-friendly bioresource to promote plant growth in heavy metal-contaminated areas.

Phytormediation Efficiency Increased by Using Plant Growth Promoting Bacteria (PGPB) and Chelates

2020 ◽  
pp. 85-103
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Metal Contamination ◽  
Chelating Agents ◽  
Heavy Metal Contamination ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

In this chapter, the authors give information about the plant-growth-promoting bacteria and chelating agents removing high number of contaminants with the help of phytoremdiation technology. To the best of the authors' knowledge, this is the first chapter about heavy metal contamination in groundwater and soil removing by microbes and chelates.

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