Diversity, Plant Growth Promoting Attributes, and Agricultural Applications of Rhizospheric Microbes

2020 ◽  
pp. 1-52 ◽  
Author(s):  
Gangavarapu Subrahmanyam ◽  
Amit Kumar ◽  
Sosanka Protim Sandilya ◽  
Mahananda Chutia ◽  
Ajar Nath Yadav
Keyword(s):  
Plant Growth ◽  
Agricultural Applications ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Rhizospheric Microbes

scholarly journals MARINE MACROALGAE: PLANT GROWTH STIMULATORS

2021 ◽  
pp. 110-118
Author(s):  
Haresh S. Kalasariya ◽  
Nikunj B. Patel ◽  
Ankita Jain ◽  
Nayan D. Prajapati ◽  
Richa N. Patel
Keyword(s):  
Plant Growth ◽  
Agricultural Sector ◽  
Marine Macroalgae ◽  
Soil Environment ◽  
Growth Stimulator ◽  
Agricultural Applications ◽  
Plant Growth Promoting ◽  
Review Study ◽  
Growth Promoting

The modern agricultural sector is mainly dependent on synthetic fertilizer for enhancing the growth of crop improvements but a burden of inorganic and chemical-based fertilizer currently created a serious threat to human health as well as the soil environment. Fertilizer research is therefore focusing on an alternative to chemical fertilizer by exploiting natural sources such as marine macroalgae or seaweed. The use of seaweed will be an eco-friendlier approach to sustainable agriculture. Marine macroalgae or seaweed widely applicable in plant growth enhancements due to the presence of biological active phycocompounds such as proteins, phenolic compounds, amino acids, polysaccharides, plant-growth-promoting hormones, and some growth factors, etc. Several research studies have been carried out on the applicability of seaweed or the effect of marine algae or its components on plants and its quality. These types of constituents play their role in improving the morphological as well as biochemical characteristics of plants. The present review study focuses on the applicability of marine macroalgae as a biofertilizer or plant growth stimulator in agricultural applications. This study further helps to improve the nutritional quality of crops which prove to be useful in further investigations and applications. KEYWORDS: Seaweed, Marine Macroalgae, Biofertilizer, Growth stimulator, Agriculture

scholarly journals A HARNESSING THE POTENTIAL OF NOVEL BIOACTIVE COMPOUNDS PRODUCED BY ENDOPHYTIC Phoma spp.: BIOMEDICAL AND AGRICULTURAL APPLICATIONS

2020 ◽  
Vol 19 (6) ◽  
pp. 31-45
Author(s):  
Mahendra Rai ◽  
Aniket Gade ◽  
Beata Zimowska ◽  
Avinash P. Ingle ◽  
Pramod Ingle
Keyword(s):  
Secondary Metabolites ◽  
Plant Growth ◽  
Bioactive Compounds ◽  
Apparent Loss ◽  
Wide Range ◽  
Agricultural Applications ◽  
Plant Growth Promoting ◽  
Phoma Herbarum ◽  
Growth Promoting ◽  
Vast Range

Endophytes are those inhabiting in plants without causing any apparent loss to the host plant. Phoma is a ubiquitously found genus of fungi in soil, water and air. Endophytic Phoma spp. are distributed with high specific diversity, those occur in plants and are mainly responsible for the production of a vast range of secondary metabolites. These secondary metabolites or the bioactive compounds have demonstrated a wide range of activity ranging from antibacterial, antifungal, antiviral, algicidal, cytotoxic, antitubercular and plant growth promoting, etc. Bioactive compounds are produced by Phoma herbarum, P. sorghina, P. exigua, P. macrostoma, P. medicaginis, P. betae, P. tropica and others. The present review emphasizes on different species of endophytic Phoma as novel source of bioactive compounds, and their applications in medicine and agriculture are documented.

scholarly journals Cell-Free Supernatants of Plant Growth-Promoting Bacteria: A Review of Their Use as Biostimulant and Microbial Biocontrol Agents in Sustainable Agriculture

2020 ◽  
Vol 12 (23) ◽  
pp. 9917
Author(s):  
Marika Pellegrini ◽  
Giancarlo Pagnani ◽  
Matteo Bernardi ◽  
Alessandro Mattedi ◽  
Daniela M. Spera ◽  
...  
Keyword(s):  
Plant Growth ◽  
Sustainable Agriculture ◽  
Biocontrol Agents ◽  
Future Research ◽  
Plant Growth Promoting Bacteria ◽  
Bacterial Survival ◽  
Agricultural Applications ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Microbial Biocontrol Agents

Plant growth-promoting bacteria (PGPB) afford plants several advantages (i.e., improvement of nutrient acquisition, growth, and development; induction of abiotic and biotic stress tolerance). Numerous PGPB strains have been isolated and studied over the years. However, only a few of them are available on the market, mainly due to the failed bacterial survival within the formulations and after application inside agroecosystems. PGPB strains with these challenging limitations can be used for the formulation of cell-free supernatants (CFSs), broth cultures processed through several mechanical and physical processes for cell removal. In the scientific literature there are diverse reviews and updates on PGPB in agriculture. However, no review deals with CFSs and the CFS metabolites obtainable by PGPB. The main objective of this review is to provide useful information for future research on CFSs as biostimulant and biocontrol agents in sustainable agriculture. Studies on CFS agricultural applications, both for biostimulant and biocontrol applications, have been reviewed, presenting limitations and advantages. Among the 109 articles selected and examined, the Bacillus genus seems to be the most promising due to the numerous articles that support its biostimulant and biocontrol potentialities. The present review underlines that research about this topic needs to be encouraged; evidence so far obtained has demonstrated that PGPB could be a valid source of secondary metabolites useful in sustainable agriculture.

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 %.

Isolation and identification of plant growth-promoting bacteria associated with tall fescue

2009 ◽  
pp. 211-216 ◽  
Author(s):  
J. Monk ◽  
E. Gerard ◽  
S. Young ◽  
K. Widdup ◽  
M. O'Callaghan
Keyword(s):  
New Zealand ◽  
Plant Growth ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Plant Growth Promoting Bacteria ◽  
Beneficial Bacteria ◽  
Isolation And Identification ◽  
Naturally Occurring ◽  
Plant Growth Promoting ◽  
Growth Promoting

Tall fescue (Festuca arundinacea) is a useful alternative to ryegrass in New Zealand pasture but it is slow to establish. Naturally occurring beneficial bacteria in the rhizosphere can improve plant growth and health through a variety of direct and indirect mechanisms. Keywords: rhizosphere, endorhiza, auxin, siderophore, P-solubilisation

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