Klebsiella pneumoniae (HR1) assisted alleviation of Cd(II) toxicity in Vigna mungo: a case study of biosorption of heavy metal by an endophytic bacterium coupled with plant growth promotion

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Prajesh Dutta ◽  
Anamika Karmakar ◽  
Sukanta Majumdar ◽  
Swarnendu Roy
Keyword(s):  
Heavy Metal ◽  
Klebsiella Pneumoniae ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Endophytic Bacterium ◽  
Vigna Mungo

Plant Growth Promotion Potential of Heavy Metal Resistant Bacteria From The Sewage Contaminated Coovum River, Chennai, India

2014 ◽  
Vol 11 (SE) ◽  
pp. 149-158
Author(s):  
M. Jayaprakashvel ◽  
N. Imran Sheriff ◽  
M. Venkatramani ◽  
S. Vinothini ◽  
A. Jaffar Hussain
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Resistant Bacteria ◽  
Heavy Metal Resistant

scholarly journals Plant growth promotion by Bradyrhizobium japonicum under heavy metal stress

2016 ◽  
Vol 105 ◽  
pp. 19-24 ◽  
Author(s):  
M. Seneviratne ◽  
S. Gunaratne ◽  
T. Bandara ◽  
L. Weerasundara ◽  
N. Rajakaruna ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Bradyrhizobium Japonicum ◽  
Growth Promotion ◽  
Heavy Metal Stress ◽  
Metal Stress

scholarly journals Draft Genome Sequence of Phosphate-Solubilizing Chryseobacterium sp. Strain ISE14, a Biocontrol and Plant Growth-Promoting Rhizobacterium Isolated from Cucumber

2018 ◽  
Vol 6 (26) ◽  
Author(s):  
Jin-Ju Jeong ◽  
Mee Kyung Sang ◽  
Duleepa Pathiraja ◽  
Byeonghyeok Park ◽  
In-Geol Choi ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Draft Genome ◽  
Endophytic Bacterium ◽  
Phytophthora Blight ◽  
Content Type ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Phosphate Solubilizing

Chryseobacterium sp. strain ISE14 is a phosphate-solubilizing endophytic bacterium that exhibits plant growth promotion and biocontrol activities against Phytophthora blight and anthracnose on pepper.

scholarly journals Rhizosphere metagenomics of mine tailings colonizing plants: assembling and selecting synthetic bacterial communities to enhance in situ bioremediation

2019 ◽  
Author(s):  
Miguel Romero ◽  
Diana Gallego ◽  
Jazmin Blaz ◽  
Arely Lechuga ◽  
José F. Martínez ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Mine Tailings ◽  
Experimental Evolution ◽  
Growth Promotion ◽  
Abandoned Mine ◽  
Culturable Bacteria ◽  
Metabolic Potential ◽  
Rhizospheric Bacteria

AbstractMine tailings phytostabilization has been proposed as a bioremediation strategy to constrain the contaminants dispersion using plants to limit the effects of erosion. Rhizospheric bacteria impact plant health and facilitate plant establishment through their metabolic functions, which could be relevant in bioremediation strategies. We studied both culturable and metagenomic diversity or rhizospheric bacteria of mine tailings colonizing plants of an abandoned mine operation in Nacozari de García, Sonora, Mexico. Diversity was described through amplification of the 16S rRNA gene and whole metagenome shotgun sequencing of both environmental and cultured rhizosphere associated microbes. The culturable bacteria were assembled in a synthetic community (SC; 235 bacteria genera). Subsequently, we performed an experimental evolution setup with the SC, selecting for heavy metal resistance, microbial competition, and the ability for growing in plant-derived nutrient sources. The selection experiment show that bacteria diversity decreases from the environmental culture-free microbiomes to the mine tailings rhizospheres and the experimental evolution outcome: the synthetic community (FSC; 43 bacteria genera). The rhizosphere communities shifted from the dominance of Actinobacteria in their environment to Proteobacteria in the cultivated consortia and the synthetic communities. Both environmental and cultured metagenomes contained plant-growth promotion, heavy-metal homeostasis, and antibiotic resistance predicted genes. The FSC included predicted proteins related to plant-growth promotion such as siderophore production and plant hormone regulation proteins. We reconstructed a metagenome assembled genomic sequence named Enterobacter sp., Nacozari. The recovered Enterobacter sp. Nacozari, have predicted coding genes for direct and indirect plant growth promotion along with adhesion and oxidative stress-related proteins. The metabolic potential of the FSC presents promising features that might make it useful for plant-growth promotion in tailored phytostabilization strategies for the abandoned mine-tailings of Nacozari.

scholarly journals Genome Mining and Evaluation of the Biocontrol Potential of Pseudomonas fluorescens BRZ63, a New Endophyte of Oilseed Rape (Brassica napus L.) against Fungal Pathogens

2020 ◽  
Vol 21 (22) ◽  
pp. 8740
Author(s):  
Daria Chlebek ◽  
Artur Pinski ◽  
Joanna Żur ◽  
Justyna Michalska ◽  
Katarzyna Hupert-Kocurek
Keyword(s):  
Brassica Napus ◽  
Plant Growth ◽  
Pseudomonas Fluorescens ◽  
Oilseed Rape ◽  
Plant Growth Promotion ◽  
Fungal Pathogens ◽  
Growth Promotion ◽  
Genome Mining ◽  
Plant Colonization ◽  
Brassica Napus L

Endophytic bacteria hold tremendous potential for use as biocontrol agents. Our study aimed to investigate the biocontrol activity of Pseudomonas fluorescens BRZ63, a new endophyte of oilseed rape (Brassica napus L.) against Rhizoctonia solani W70, Colletotrichum dematium K, Sclerotinia sclerotiorum K2291, and Fusarium avenaceum. In addition, features crucial for biocontrol, plant growth promotion, and colonization were assessed and linked with the genome sequences. The in vitro tests showed that BRZ63 significantly inhibited the mycelium growth of all tested pathogens and stimulated germination and growth of oilseed rape seedlings treated with fungal pathogens. The BRZ63 strain can benefit plants by producing biosurfactants, siderophores, indole-3-acetic acid (IAA), 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and ammonia as well as phosphate solubilization. The abilities of exopolysaccharide production, autoaggregation, and biofilm formation additionally underline its potential to plant colonization and hence biocontrol. The effective colonization properties of the BRZ63 strain were confirmed by microscopy observations of EGFP-expressing cells colonizing the root surface and epidermal cells of Arabidopsis thaliana Col-0. Genome mining identified many genes related to the biocontrol process, such as transporters, siderophores, and other secondary metabolites. All analyses revealed that the BRZ63 strain is an excellent endophytic candidate for biocontrol of various plant pathogens and plant growth promotion.

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