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
Citations
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Journal ArticleDOI
A nodule endophytic Bacillus megaterium strain isolated from Medicago polymorpha enhances growth, promotes nodulation by Ensifer medicae and alleviates salt stress in alfalfa plants
A. Chinnaswamy,T. Coba de la Peña,A. Stoll,D. de la Peña Rojo,J. Bravo,Ana Rincón,M. Mercedes Lucas,José Javier Pueyo +7 more
TL;DR: The present address: Sugarcane Breeding Institute, Division of Crop Improvement, Coimbatore, Tamil Nadu, India.
Book ChapterDOI
Plant Growth Promoting Rhizobacteria: Application in Biofertilizers and Biocontrol of Phytopathogens
TL;DR: Various aspects of growth promotion and disease management to act as biofertilizers and biocontrol functioning in plants using PGPB are discussed.
Book ChapterDOI
Bioformulations for Plant Growth Promotion and Combating Phytopathogens: A Sustainable Approach
TL;DR: The role of microbes in sustainable agriculture has provided new insights to agroeconomy, and one of the direct benefits is the lesser reliance on chemical fertilizers and pesticides as the continuous application of these chemicals not only showed detrimental effects on agro-ecosystems but also resulted in health risks to humans and animals as discussed by the authors.
Journal ArticleDOI
Selection of plant growth-promoting Pseudomonas spp. that enhanced productivity of soybean-wheat cropping system in Central India.
TL;DR: The results suggest that the GRP3 and HHRE81 strains may be used to increase the productivity efficiency of soybean-wheat cropping systems in Vertisols of Central India and the PCA coupled cluster analysis tool may help in the selection of other such strains.
Journal ArticleDOI
Characterization and complete genome analysis of the surfactin-producing, plant-protecting bacterium Bacillus velezensis 9D-6
Elliot Grady,Elliot Grady,Jacqueline MacDonald,Margaret T. Ho,Brian Weselowski,Tim McDowell,Ori Solomon,Justin B. Renaud,Ze-Chun Yuan,Ze-Chun Yuan +9 more
TL;DR: The data presented here suggest B. velezensis 9D-6 as a candidate plant growth promoting bacterium (PGPB) and biopesticide, which uses a unique complement of antimicrobials, as well as other mechanisms, to protect plants against phytopathogens.
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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Phosphate solubilizing bacteria and their role in plant growth promotion
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