scholarly journals Biocoating of Seeds with Plant Growth-Promoting Rhizobacteria to Improve Plant Establishment

1995 ◽  
Vol 24 (3) ◽  
pp. 179-185 ◽  
Author(s):  
B. Schippers ◽  
R. J. Scheffer ◽  
B. J. J. Lugtenberg ◽  
P. J. Weisbeek
Keyword(s):  
Plant Growth ◽  
Molecular Level ◽  
Plant Growth Promoting Rhizobacteria ◽  
Soil Types ◽  
Agricultural Systems ◽  
Plant Establishment ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Microbial Products ◽  
Sustainable Agricultural Systems

Plant growth-promoting rhizobacteria (PGPRs) have the potential to contribute significantly to the development of sustainable agricultural systems. Our understanding at the molecular level of the interactions between these microorganisms, the plant and the environment is growing rapidly, facilitating the development of microbial products. However, their development is hampered by the legislative restrictions on their use and consequently high costs. This is especially true because biocontrol agents are often specific to crops, pathogens and soil types. Nevertheless, promising new products for the improvement of plant establishment and plant growth, such as ‘BioCoat ’ for radish seeds, have entered the market.

Unlocking the potential of plant growth-promoting rhizobacteria on soil health and the sustainability of agricultural systems

2020 ◽  
Vol 273 ◽  
pp. 111118 ◽  
Author(s):  
Zobia Khatoon ◽  
Suiliang Huang ◽  
Mazhar Rafique ◽  
Ali Fakhar ◽  
Muhammad Aqeel Kamran ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Health ◽  
Plant Growth Promoting Rhizobacteria ◽  
Agricultural Systems ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Characterization of Potential Plant Growth Promoting Rhizobacteria Isolated from Maize (Zea maysL.) in Central and Northern Benin (West Africa)

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Nadège A. Agbodjato ◽  
Pacôme A. Noumavo ◽  
Farid Baba-Moussa ◽  
Hafiz A. Salami ◽  
Haziz Sina ◽  
...  
Keyword(s):  
Plant Growth ◽  
Hydrogen Cyanide ◽  
Plant Growth Promoting Rhizobacteria ◽  
Soil Types ◽  
Maize Production ◽  
Microbial Density ◽  
Maize Roots ◽  
Agroecological Zones ◽  
Plant Growth Promoting ◽  
Growth Promoting

Our study aims to characterize Plant Growth Promoting Rhizobacteria (PGPR) isolated from maize roots in five agroecological zones of central and northern Benin. Sixty samples were collected at the rate of four samples per village and three villages per agroecological zone. Rhizobacteria strains were isolated from these samples and biochemically characterized. These strains were analyzed for some of their PGPR traits like ammonia production and hydrogen cyanide following conventional methods. Microbiological investigation of these samples has shown that maize rhizospheres in central and northern Benin contain a high diversity of microorganisms. A total of nine species of maize Plant Growth Promoting Rhizobacteria were identified. Those PGPR include fiveBacillusspecies (B. polymyxa, B. pantothenticus, B. anthracis, B. thuringiensis, andB. circulans), threePseudomonasspecies (P. cichorii, P. putida, andP. syringae), andSerratia marcescens. The microbial diversity does not depend on the soil types. The microbial density, generally high, varies according to both soil types and agroecological zones. AllSerratiastrains (100%) have produced ammonia, whereas 80% ofBacillusand 77.77% ofPseudomonasproduced this metabolite. The hydrogen cyanide was produced by all isolates (100%) independent of their genus. These results suggest the possibility to use these rhizobacteria as biological fertilizers to increase maize production.

scholarly journals A review on plant growth promoting rhizobacteria acting as bioinoculants and their biological approach towards the production of sustainable agriculture

2015 ◽  
Vol 7 (1) ◽  
pp. 540-556 ◽  
Author(s):  
Vibha Nehra ◽  
Madhu Choudhary
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Root Surface ◽  
Current Status ◽  
Plant Growth Promoting ◽  
Colonization Ability ◽  
Growth Promoting ◽  
Sustainable Agricultural Systems ◽  
Commercial Inoculants ◽  
Action Formulation

Plant growth promoting rhizobacteria are the soil bacteria inhabiting around/on the root surface and are directly or indirectly involved in promoting plant growth and development via production and secretion of various regulatory chemicals in the vicinity of rhizosphere. There has been much research interest in PGPB and there is now an increasing number of PGPB being commercialized for various crops. Today a lot of efforts have been made for searching and investigating the PGPB and their mode of action, so that they can be exploited commercially as biofertilizers. Because of the various challenges faced in screening, formulation, and application, PGPB have yet to fulfill their promise and potential as commercial inoculants. Recent progress in our understanding of their diversity, colonization ability, mechanisms of action, formulation, and application should facilitate their development as reliablecomponents in the management of sustainable agricultural systems. Several reviews have discussed specific aspects of PGPB as bioinoculants. We have tried to critically evaluate the current status of bacterial inoculants for contemporary agriculture in developed and developing countries. This review focuses on some important information regarding the biofertilizing potential of some important group of microbes, their formulations, their application for the development of sustainable technology, scope of improvement by genetic engineering, steps to be undertaken for their commercialization and their future prospects.

scholarly journals Antagonism of plant growth promoting rhizobacteria against the causal agent of the vascular wilting of tomato

2020 ◽  
Vol 22 (2) ◽  
pp. 35-43
Author(s):  
Narmer Fernando Galeano Vanegas ◽  
Sandra Maria Marulanda Moreno ◽  
Beatriz Elena Padilla Hurtado ◽  
Javier Guillermo Mantilla Afanador ◽  
Nelson Ceballos Aguirre ◽  
...  
Keyword(s):  
Plant Growth ◽  
Burkholderia Cepacia ◽  
Growth Promotion ◽  
Selection Index ◽  
Plant Growth Promoting Rhizobacteria ◽  
Antagonistic Effect ◽  
Agricultural Systems ◽  
Plant Growth Promoting ◽  
Antagonistic Potential ◽  
Growth Promoting

Use of biotechnological potential of native microorganisms as bio-inputs is having a great impact on agricultural systems. Plant Growth Promoting Rhizobacteria (PGPR), in addition to their beneficial effect on plant growth and on the availability of soil elements, also have an antagonistic effect against different pathogens. In this study, growth promotion mechanisms with emphasis on the antagonism of PGPR isolated from sugarcane and tomato crops were evaluated. Antagonism against Fusarium oxysporum f.sp lycopersici (Fol) was determined by dual tests, inhibition of germination and production of chitinases and endoglucanases. 52 isolates were evaluated and according to their results in dual tests 10 were selected for further analysis. Isolate GIBI127 showed the best percentage of Inhibition Germination (IG) of Fol (59.29%). Then, a selection index was calculated using results from gi, dual tests and growth promotion mechanisms to select five best isolates. Finally, these bacteria were evaluated for chitinases and endoglucanases production using Miller´s method. As a result, strain GIBI419 (Burkholderia cepacia) showed a higher production of these enzymes. Selected isolates have antagonistic potential along with plant growth promotion characteristics, which can be used for the development of microbial inoculants which allow the establishment of agricultural systems for tomato cultivation that are sustainable, efficient, and environmentally friendly.

Aplikasi Bacillus subtilis pada beberapa Bahan Organik terhadap Pertumbuhan dan Produksi Tanaman Cabai Rawit (Capsicum frutescens L.)

2020 ◽  
Vol 21 (1) ◽  
pp. 14-19
Author(s):  
Praptiningsih Gamawati Adinurani ◽  
Sri Rahayu ◽  
Nurul Fima Zahroh
Keyword(s):  
Bacillus Subtilis ◽  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Capsicum Frutescens ◽  
Plant Growth Promoting ◽  
Growth Promoting

Mikroba Bacillus subtilis merupakan agen pengendali hayati mempunyai kelebihan sebagai Plant Growth Promoting Rhizobacteria (PGPR) yaitu dapat berfungsi sebagai biofertilizer, biostimulan, biodekomposer dan bioprotektan. Tujuan penelitian mengetahui potensi B. subtilis dalam merombak bahan organik sebagai usaha meningkatkan ketersediaan bahan organik tanah yang semakin menurun. Penelitian menggunakan Rancangan Petak Terbagi dengan berbagai  bahan organik sebagai petak utama (B0 = tanpa bahan organik, B1 = kotoran ayam,  B2 = kotoran kambing, B3 = kotoran sapi) dan aplikasi B.subtilis sebagai anak petak (A0 = 0 cc/L, A1 = 5cc/L, A2 = 10 cc/L, Pengamatan meliputi variabel tinggi tanaman, indeks luas daun, jumlah buah per tanaman, berat buah per tanaman, dan bahan organik tanah. Data pengamatan  dianalisis ragam  menggunakan  Statistical Product and Service Solutions (SPSS) versi 25 dan dilanjutkan dengan uji Duncan untuk mengetahui signifikansi perbedaan antar perlakuan. Hasil penelitian menunjukkan tidak terdapat interaksi antara bahan organik kotoran ternak dan konsentrasi B. subtilis terhadap semua variabel pengamatan. Potensi B. subtilis sangat baik dalam mendekomposisi bahan organik yang ditunjukkan dengan peningkatan bahan organik, dan hasil terbaik pada kotoran  sapi (B3) dan konsentrasi B. subtilis 15 mL/L masing-masing sebesar 46.47 % dan 34.76 %. Variabel pertumbuhan tidak berbeda nyata kecuali tinggi tanaman dengan pertambahan tinggi paling banyak pada pemberian kotoran kambing sebesar 170.69 %.

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