Journal ArticleDOI
Plant growth promoting rhizobacteria as biofertilizers
TLDR
This review focuses on the known, the putative, and the speculative modes-of-action of PGPR, which include fixing N2, increasing the availability of nutrients in the rhizosphere, positively influencing root growth and morphology, and promoting other beneficial plant–microbe symbioses.Abstract:
Numerous species of soil bacteria which flourish in the rhizosphere of plants, but which may grow in, on, or around plant tissues, stimulate plant growth by a plethora of mechanisms. These bacteria are collectively known as PGPR (plant growth promoting rhizobacteria). The search for PGPR and investigation of their modes of action are increasing at a rapid pace as efforts are made to exploit them commercially as biofertilizers. After an initial clarification of the term biofertilizers and the nature of associations between PGPR and plants (i.e., endophytic versus rhizospheric), this review focuses on the known, the putative, and the speculative modes-of-action of PGPR. These modes of action include fixing N2, increasing the availability of nutrients in the rhizosphere, positively influencing root growth and morphology, and promoting other beneficial plant–microbe symbioses. The combination of these modes of actions in PGPR is also addressed, as well as the challenges facing the more widespread utilization of PGPR as biofertilizers.read more
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Book ChapterDOI
Soil Quality and Plant-Microbe Interactions in the Rhizosphere
Debarati Bhaduri,Sharmistha Pal,Tapan Jyoti Purakayastha,Koushik Chakraborty,R. S. Yadav,Mohd Sayeed Akhtar +5 more
TL;DR: In this paper, induced changes in the rhizosphere ecology by plant microbe interactions and also to integrate these changes to soil quality indicator of unified soil in the sustainable agriculture soil management practices.
Journal ArticleDOI
Plant growth promoting Rhizobacteria-an efficient tool for agriculture promotion
TL;DR: Plant growth-promoting rhizobacteria (PGPR) are naturally occurring soil bacteria that aggressively colonize plant roots and benefit plants by providing growth promotion, and are reported to influence the growth, yield, and nutrient uptake by an array of mechanisms.
Journal ArticleDOI
Exploring the Role of Bacterial Extracellular Polymeric Substances for Sustainable Development in Agriculture.
TL;DR: Along with other commercial applications, EPS show promising avenues for improving agricultural productivity thus helping to address land scarcity as well as minimizing environmental pollution.
Effects of Azotobacter and Nitrogen Chemical Fertilizer on Yield and Yield Components of Wheat (Triticum aestivum L.)
TL;DR: In this article, the effect of seed inoculation by Aazotobacter and different levels of nitrogen fertilizer on growth and yield of sunflower (Azargol cultivar) was studied in experiment farm of Islamic Azad University, Par Abad Mogha Branch during 2010-2011 growing seasons.
Journal ArticleDOI
Innovative bio-products for agriculture
TL;DR: In this article, state-of-the-art research in the field of novel bio-based products for agriculture is reported, including supercritical algal extracts as a biostimulant of plant growth and health supporting feed additive for laying hens.
References
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Journal ArticleDOI
Phosphate solubilizing bacteria and their role in plant growth promotion
Hilda Rodríguez,Reynaldo Fraga +1 more
TL;DR: Genetic manipulation of phosphate-solubilizing bacteria to improve their ability to improve plant growth may include cloning genes involved in both mineral and organic phosphate solubilization, followed by their expression in selected rhizobacterial strains.
Journal ArticleDOI
The enhancement of plant growth by free-living bacteria
TL;DR: The ways in which plant growth promoting rhizobacteria facilitate the growth of plants are considered and discussed and the possibility of improving plant growth promotion by specific genetic manipulation is critically examined.
Journal ArticleDOI
Microbial interactions and biocontrol in the rhizosphere
TL;DR: Multiple microbial interactions involving bacteria and fungi in the rhizosphere are shown to provide enhanced biocontrol in many cases in comparison with biocOntrol agents used singly.
Journal ArticleDOI
Soil Fertility and Fertilizers
TL;DR: Soil fertility and fertilizers, Soil fertility, fertilizers and soil fertility and fertility, this paper, soil fertility, soil fertility, fertility, and fertilization, etc.
Journal ArticleDOI
A Model For the Lowering of Plant Ethylene Concentrations by Plant Growth-promoting Bacteria
TL;DR: It is argued that the simplest explanation for the observed biological activity of plant growth promoting rhizobacteria relates to the relative amounts of 1-aminocyclopropane-1-carboxylate deaminase and 1-amino-2-car boxylate oxidase in the system under consideration.
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