scholarly journals PLANT GROWTH PROMOTING RHIZOBACTERIA (PGPR) DARI AKAR BAMBU APUS (Gigantochola apus) MENINGKATKAN PERTUMBUHAN TANAMAN

BIOLOVA ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 1-6
Author(s):  
Elza Yulistiana ◽  
Hening Widowati ◽  
Agus Sutanto
Keyword(s):  
Plant Growth ◽  
Fungal Pathogens ◽  
Plant Pathogens ◽  
Crop Yields ◽  
Plant Growth Promoting Rhizobacteria ◽  
Biological Control Agents ◽  
Living Things ◽  
Bacillus Spp ◽  
Plant Growth Promoting ◽  
Growth Promoting

Abstract: Living things need nutrients to grow and their endurance. The presence of nutrients around plant roots is very important for microorganisms as biological control agents and also for plant pathogens. PGPR Plant Growth Promoting Rhizobacteria (PGPR) has a role in increasing plant growth, crop yields and plant growth. Bacteria in PGPR can actively colonize the rhizosphere. Bamboo roots are colonized by many bacteria (Pseudomonas fluorescens), these bacteria can play a role in increasing the solubility of P in the soil, certain strains of Pseudomonas sp. can prevent plants from fungal pathogens that come from the soil. Rhizobacteria from the Bacillus spp. and Pseudomonas spp., able to dissolve phosphate, while the Serratia spp. group, in addition to being able to increase the availability of P (phosphate) can also fix nitrogen and be able to synthesize IAA. Microbes with the ability to produce phytohormone are an effort to help in increasing plant growth.

scholarly journals Importance of plant growth promoting rhizobacteria (PGPR) in agriculture: A Review

2020 ◽  
Vol 35 (1-2) ◽  
Author(s):  
Tabish Akhtar ◽  
Shubham Kumar ◽  
Sukhdeo Kumar ◽  
M. R. Meena
Keyword(s):  
Plant Growth ◽  
Crop Production ◽  
Plant Pathogens ◽  
Crop Yields ◽  
Plant Growth Promoting Rhizobacteria ◽  
Agricultural Industry ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Increasing Demand ◽  
Environmentally Sound

The growth of plants promoting rhizobacteria (PGPR) has gained widespread importance in agriculture. These are beneficial bacteria found in nature that live actively in plant roots and improve plant growth and increase agricultural productivity.. (PGPR) promoting plant growth shows an important role in the sustainable agricultural industry. The increasing demand for crop production is a major challenge nowadays, with a significant lack of use of synthetic chemical fertilizers and pesticides. The use of PGPR has proven to be an environmentally sound way of increasing crop yields by facilitating plant growth through direct or indirect mechanisms. The mechanisms of PGPR include regulating hormonal and nutritional balance, inducing resistance against plant pathogens, and dissolving nutrients for easy uptake by plants. Furthermore, PGPRs show synergistic and antagonistic interactions with microorganisms within the rhizosphere and in bulk soils, which indirectly increases plant growth rates. There are several bacteria species that act as PGPR. This review summarizes the methodology of PGPR as a bio-fertilizer in agriculture.

scholarly journals THE INFLUENCE OF RHIZOBACTERIA ON THE INFECTION OF СUCUMIS SATIVUS CAUSED BY CUCUMBER GREEN MOTTLE MOSAIC VIRUS

2007 ◽  
Vol 5 ◽  
pp. 179-186
Author(s):  
А.V. Charina ◽  
V.G. Skripov ◽  
I.G. Budzanivska ◽  
М. V Kovalchuk ◽  
V.P. Polischuk
Keyword(s):  
Plant Growth ◽  
Mosaic Virus ◽  
Plant Virus ◽  
Crop Yields ◽  
Plant Growth Promoting Rhizobacteria ◽  
Mottle Virus ◽  
Virus Infections ◽  
Plant Growth Promoting ◽  
Growth Promoting

Some strains of rhizobacteria were investigated for biocontrol efficiency against cucumber green mottle virus (CGMV) in cucumber. Treatment of seeds with three strains of rhizobacteria caused delay in symptom appearance, reduced development of CGMV significantly and enhanced plant growth. Hence, plant growth promoting rhizobacteria could play a major role in reducing of plant virus infections and increasing crop yields.

scholarly journals Anti-fungal secondary metabolites and hydrolytic enzymes from rhizospheric bacteria in crop protection: a review

2021 ◽  
Vol 44 (2) ◽  
pp. 69-84
Author(s):  
Farhana Tasnim Chowdhury ◽  
Nazia Rifat Zaman ◽  
Mohammad Riazul Islam ◽  
Haseena Khan
Keyword(s):  
Secondary Metabolites ◽  
Plant Growth ◽  
Fungal Pathogens ◽  
Hydrolytic Enzymes ◽  
Plant Growth Promoting Rhizobacteria ◽  
Field Conditions ◽  
Plant Host ◽  
Wide Range ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant growth promoting rhizobacteria (PGPR) residing in soil rhizosphere provide enormous beneficial effects to a plant host producing diverse secondary metabolites and enzymes useful for plant growth and protection. Siderophores, antibiotics, volatile compounds and hydrolytic enzymes are the major molecules secreted by the PGPRs, which have substantial antifungal properties and can provide plant protection. These compounds are responsible for the lysis and hyperparasitism of antagonists against deleterious fungal pathogens. Siderophore-producing PGPRs function by depriving the pathogen of iron nutrition. Antibiotics have been reported to be involved in the suppression of different fungal pathogens by inducing fungistasis, inhibition of spore germination, lysis of fungal mycelia. The PGPRs also secrete a wide range of low molecular weight volatile organic compounds (VOCs) that inhibit mycelial growth, sporulation, germination of phytophathogenic fungi, etc. Hydrolytic enzymes, mostly chitinase, protease and cellulose, lyse the cell wall of fungi. Therefore, plant growth-promoting rhizobacteria can be considered as an effective, eco-friendly, and sustainable replacement to the chemical fungicides. There are many PGPRs that perform very well in controlled conditions but not in field conditions, and hence the commercializing of hese products is not easy.  Development of formulations with increased shelf life, a broad spectrum of action and consistent performance under field conditions can pave the way for commercializing the PGPRs at a faster rate. Journal of Bangladesh Academy of Sciences, Vol. 44, No. 2, 69-84, 2020

scholarly journals Impact of Plant Growth Promoting Rhizobacteria in Sustainable Agriculture: An Important Natural Resource for Crop Improvement

2019 ◽  
Vol 5 (03) ◽  
pp. 210-214
Author(s):  
Debnirmalya Gangopadhyay ◽  
Ashmita Ghosh
Keyword(s):  
Plant Growth ◽  
Sustainable Agriculture ◽  
Crop Yields ◽  
Growth Promotion ◽  
Crop Improvement ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Increasing Demand ◽  
Environmentally Sound

It is usually admitted that the chemical fertilizers and pesticides used in modern agriculture create a real environmental and public health problems. The increasing demand for production with a significant reduction of synthetic fertilizers and pesticides use is a big challenge nowadays. The use of plant growth promoting rhizobacteria or PGPR has been proven to be an environmentally sound way of increasing crop yields by facilitating plant growth through either a direct or indirect mechanism. They play an important role to increase in soil fertility, plant growth promotion and suppression of phytopathogens for development of ecofriendly sustainable agriculture. In view of the latest advances in PGPR biotechnology, this paper proposes to do the review on PGPR in rhizosphere and describes the different mechanisms used by PGPR to promote the plants growth and health. In prospect to a healthy and sustainable agriculture, the PGPR approach revealed as one of the best ecofriendly alternatives.

Plant growth promoting rhizobacteria (PGPR): Biofertiliser and Biocontrol agent-Review article

2019 ◽  
Vol 8 ◽  
pp. 42-45
Author(s):  
Anup Muni Bajracharya
Keyword(s):  
Plant Growth ◽  
Plant Pathogens ◽  
Agricultural Soils ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Productivity ◽  
Good Health ◽  
Systemic Resistance ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Good Food

Good health starts with good food. Humans expect agriculture to supply good food with sufficient nutrients, economically and culturally valued foods, fibers and other products. But the excessive application of synthetic pesticides has exerted an adverse effect on bio-flora, fauna and natural enemies. Even a largest part of yield has been lost due to various stresses, like biotic and abiotic stresses to the plant. On this account, plant growth promoting rhizobacteria (PGPR), an eco-friendly biopesticides is boon for the biocontrol of different plant pathogens. Moreover, PGPR strains can enhance the plant growth through the production of various plant growth promoting substances. These are generally a group of microorganism that is found either in the plane of the rhizosphere or above roots impacting some positive benefits to plants. PGPR are associated with plant roots and augment plant productivity and immunity; however, recent work by several groups shows that PGPR also elicit so-called 'induced systemic tolerance' to salt and drought. PGPR might also increase nutrient uptake from soils, thus reducing the need for fertilizers and preventing the accumulation of nitrates and phosphates in agricultural soils. Scientific researches involve multidisciplinary approaches to understand adaptation of PGPR, effects on plant physiology and growth, induced systemic resistance, biocontrol of plant pathogens, bio fertilization, and potential green alternative for plant productivity, viability of co inoculating, plant microorganism interactions, and mechanisms of root colonization.

scholarly journals Bacterial Diversity and Community Structure in Typical Plant Rhizosphere

Diversity ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 179 ◽  
Author(s):  
Alawiye ◽  
Babalola
Keyword(s):  
Plant Growth ◽  
Soil Health ◽  
Plant Growth Promoting Rhizobacteria ◽  
Vital Role ◽  
Success Story ◽  
Bacillus Spp ◽  
Plant Growth Promoting ◽  
Microbe Interactions ◽  
Growth Promoting

Bacteria play a vital role in the quality of soil, health, and the production of plants. This has led to several studies in understanding the diversity and structure in the plant rhizosphere. Over the years, there have been overwhelming advances in molecular biology which have led to the development of omics techniques which utilize RNA, DNA, or proteins as biomolecules; these have been gainfully used in plant–microbe interactions. The bacterial community found in the rhizosphere is known for its colonization around the roots due to availability of nutrients, and composition, and it affects the plant growth directly or indirectly. Metabolic fingerprinting enables a snapshot of the metabolic composition at a given time. We review metabolites with ample information on their benefit to plants and which are found in rhizobacteria such as Pseudomonas spp. and Bacillus spp. Exploring plant-growth-promoting rhizobacteria using omics techniques can be a true success story for agricultural sustainability.

Importance of plant growth-promoting rhizobacteria in enhancing the seed germination and growth of watermelon attacked by fungal pathogens

2007 ◽  
Vol 55 (2) ◽  
pp. 243-249 ◽  
Author(s):  
S. Lokesh ◽  
B. Bharath ◽  
V. Raghavendra ◽  
M. Govindappa
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Fungal Pathogens ◽  
Plant Growth Promoting Rhizobacteria ◽  
Fungal Species ◽  
Didymella Bryoniae ◽  
Seedling Vigour ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Germination And Growth

In the present study, seven isolates of plant growth-promoting rhizobacteria were used for seed treatment to suppress seedling diseases caused by fungi. Their effect on the seed germination and seedling vigour of watermelon was also studied. Among them INR-7 was able to inhibit a broad range of fungal species, GBO3 and IPC-11 were found to be effective against Fusarium spp. and Didymella bryoniae , while isolates SE-34 and T-4 were effective against Myrothecium species and also reduced the development of symptoms on the seedlings. Isolates GBO3, IPC-11 and INR-7 increased seed germination and seedling vigour to the greatest extent.

scholarly journals Roles of Plant Growth-Promoting Rhizobacteria (PGPR) in Stimulating Salinity Stress Defense in Plants: A Review

2021 ◽  
Vol 22 (6) ◽  
pp. 3154
Author(s):  
Dung Minh Ha-Tran ◽  
Trinh Thi My Nguyen ◽  
Shih-Hsun Hung ◽  
Eugene Huang ◽  
Chieh-Chen Huang
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Crop Yields ◽  
Agricultural Practices ◽  
Plant Growth Promoting Rhizobacteria ◽  
Significant Loss ◽  
Seed Vigor ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Seed Biopriming

To date, soil salinity becomes a huge obstacle for food production worldwide since salt stress is one of the major factors limiting agricultural productivity. It is estimated that a significant loss of crops (20–50%) would be due to drought and salinity. To embark upon this harsh situation, numerous strategies such as plant breeding, plant genetic engineering, and a large variety of agricultural practices including the applications of plant growth-promoting rhizobacteria (PGPR) and seed biopriming technique have been developed to improve plant defense system against salt stress, resulting in higher crop yields to meet human’s increasing food demand in the future. In the present review, we update and discuss the advantageous roles of beneficial PGPR as green bioinoculants in mitigating the burden of high saline conditions on morphological parameters and on physio-biochemical attributes of plant crops via diverse mechanisms. In addition, the applications of PGPR as a useful tool in seed biopriming technique are also updated and discussed since this approach exhibits promising potentials in improving seed vigor, rapid seed germination, and seedling growth uniformity. Furthermore, the controversial findings regarding the fluctuation of antioxidants and osmolytes in PGPR-treated plants are also pointed out and discussed.

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