scholarly journals Effect of inoculation of Bacillus strains on flowering of carnation (Dianthus caryophyllus)

2020 ◽  
pp. 21-25
Author(s):  
Margarita Guadalupe García-Barajas ◽  
Alejandro Hernández-Morales ◽  
María del Socorro Chávaro-Ortíz ◽  
Juan-Ramiro Pacheco-Aguilar
Keyword(s):  
Bacillus Subtilis ◽  
Promoter Activity ◽  
Dianthus Caryophyllus ◽  
Plant Growth Promoting Bacteria ◽  
Flower Number ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Flower Quality ◽  
And Control ◽  
Carnation Flower

The carnation flower (Dianthus caryophyllus) is one of the most accepted and distributed worldwide, for its production, fertilization and the application of phytohormones have been optmized, thereby seeking to improve flower quality. However, little has been tested on the effect of the application of plant growth promoting bacteria. In the present work, carnation plants cv. Lilliput, were inoculated with 5X107 cells of Bacillus megaterium M6 and Bacillus subtilis P12, both individually and in interaction (M6 x P12), registering agronomic parameters related to flowering. The results showed that none of the inoculations had an effect on the percentage of flowering plants, neither on the height nor the diameter of the flower, only P12 increased flower number per plant by 38 %, compared to the control without inoculation. Being the period between 96 and 127 days after transplantation (dat), where tha highest number of total flowers was recorded (70) with respect to the other treatments (M6:36, M6 x P12: 24 and control: 32). In conclusion, Bacillus subtilis P12 has a promoter activity to improve the flowering of carnation plants.

scholarly journals Glyphosate Degradation by Two Plant Growth Promoting Bacteria (PGPB) Isolated from Rhizosphere of Maize

2019 ◽  
pp. 1-11 ◽  
Author(s):  
E. Ezaka ◽  
A. K. Akintokun ◽  
P. O. Akintokun ◽  
L. B. Taiwo ◽  
A. C. O. Uthman ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Plant Growth ◽  
Bacillus Cereus ◽  
Mixed Culture ◽  
Degradation Products ◽  
Polluted Soil ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
And Control

This study was aimed at evaluating the possible utilization of glyphosate tolerant plant growth promoting bacteria (Pseudomonas aeruginosa and Bacillus cereus) for bioremediation of glyphosate polluted soil. The soil samples were spiked with 3.1 mg/ml, 7.2 mg/ml and 14.4 mg/ml of glyphosate and then inoculated with Pseudomonas aeruginosa and Bacillus cereus, level of glyphosate pollution before and after inoculation with the bacteria were determined using Gas Chromatography-Mass Spectroscopy (GC-MS) after extraction with acetonitrile. The bacteria showed significant ability to degrade glyphosate. Pseudomonas aeruginosa, Bacillus cereus, their mixed culture and control recorded percentage degradation of 76.11, 85.8, 75.8 and 49%, respectively at 3.1 mg/ml of glyphosate while At the concentration of 7.2 mg/ml, the percentage degradation by P. aeruginosa, Bacillus cereus, mixed culture of the isolates and control was 84.9, 72.7, 66.4% and 39.2%, respectively. The isolates also showed significant rate of degradation at the concentration of 14.4 mg/ml. The GC-MS results showed a significant variation in the degradation products obtained when compared with control. This study revealed that substantial amount of glyphosate was degraded by P. aeruginosa and Bacillus cereus. Hence, they may have great potential in bioremediation of glyphosate polluted soil.

scholarly journals Modulation of Triticum aestivum L. tolerance to combined abiotic/biotic stresses by endophytic plant growth promoting bacteria Bacillus subtilis

2020 ◽  
Author(s):  
A.E. Ibragimov ◽  
◽  
D.Yu. Garshina ◽  
An. Kh. Baymiev ◽  
O.V. Lastochkina ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Bacillus Subtilis ◽  
Plant Growth ◽  
Host Plant ◽  
Triticum Aestivum L ◽  
Plant Growth Promoting Bacteria ◽  
Stress Effect ◽  
Biotic Stresses ◽  
Plant Growth Promoting ◽  
Growth Promoting

Wheat (Triticum aestivum L.) is one of the most important cereal food crops worldwide. Various abiotic and biotic stresses or their combinations lead to crop losses (up to 50-82%) and pose a serious threat to the agricultural industry and food security. Plant growth-promoting endophytic bacteria Bacillus subtilis are considered as a bioactive and eco-friendly strategy for plant protection. Earlier, we have shown B. subtilis 10-4 has a growth-promoting and anti-stress effect on wheat under water deficiency. Here, we investigated the effect of B. subtilis 10-4 and B. subtilis 10-4+salicylic acid (SA) on growth and tolerance of wheat (cv. ‘Omskaya-35’) to combined drought (12%PEG) and Fusarium culmorum. 12%PEG and F. culmorum led to yellowing of leaves (in addition to traces of the root damages). Inoculation with 10-4 and especially 10-4+SA reduced the fusarium development in wheat under drought. Similar effects were revealed for growth parameters. Also, 10-4 (especially 10-4+SA) reduces stress-induced lipid peroxidation (MDA). Such physiological effect may be connected with the ability of strain 10-4 to colonize the internal tissues of host-plant and regulate metabolism from the inside. The obtained construct based on the plasmid pHT01 and the green fluorescent protein (gfp) gene, by which was modified the strain 10-4, will allow revealing the nature of the symbiotic relationships between the strain 10-4 and host-plant. The findings indicate that application B. subtilis 10-4 and its composition with SA may be an effective strategy to increase wheat tolerance to the combined abiotic/biotic stresses.

scholarly journals Draft Genome Sequences of Three Rhizospheric Plant Growth-Promoting Bacteria

2019 ◽  
Vol 8 (26) ◽  
Author(s):  
Olubukola Oluranti Babalola ◽  
Ayansina Segun Ayangbenro ◽  
Oluwaseyi Samuel Olanrewaju
Keyword(s):  
Bacillus Subtilis ◽  
Draft Genome ◽  
Plant Growth Promoting Bacteria ◽  
Whole Genome ◽  
Bacillus Velezensis ◽  
Genome Sequences ◽  
Content Type ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Quality Control Check

Here, we report the draft genome sequences of Bacillus subtilis A1, Sphingobacterium sp. strain A3, and Pseudomonas sp. strain A29; Sphingobacterium sp. A3 and Pseudomonas sp. A29 were identified as Bacillus velezensis strain A3 and Bacillus subtilis strain A29, respectively, after a quality control check of the whole-genome sequences deposited in the NCBI database. These bacteria exhibit tremendous production of siderophores and significant antimicrobial potential. When inoculated on maize, these isolates increase its yield.

scholarly journals Effect of crustacean chitin on the efficacy of plant growth promoting bacteria in the control of root infecting fungi of sunflower and chickpea

2013 ◽  
Vol 53 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Viqar Sutana ◽  
Syed Ehteshamul-Haque ◽  
Jehan Ara ◽  
Rashid Qasim ◽  
Abdul Ghaffar
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Bacillus Subtilis ◽  
Plant Growth ◽  
Fusarium Solani ◽  
Soil Amendment ◽  
Macrophomina Phaseolina ◽  
Plant Growth Promoting Bacteria ◽  
Fresh Weight ◽  
Plant Growth Promoting ◽  
Growth Promoting

Soil amendment with crustacean chitin used alone or with <em>Pseudomonas aeruginosa Bacillus subtilis</em> significantly (p<0,05) reduced infection of <em>Rhizoctonia solani Fusarium solani</em> on sunflower and <em>R.solani</em> on chickpea. Crab chitin used alone or with <em>P.aeruginosa</em> or <em>B.subtilis</em> completely controlled the infection of <em>Macrophomina phaseolina</em> on chickpea. Prawn or shrimp powder used 1% w/w of soil was found phytotoxic on chickpea but not on sunflower. Maximum fresh weight of shoot was produced by <em>P.aeruginosa</em> used with shrimp powder in sunflower and with crab chitin in chickpea. <em>P.aeruginosa</em> produced greater plant height in chickpea used with shrimp chitin.

scholarly journals Bacillus subtilis HG-15, a Halotolerant Rhizoplane Bacterium, Promotes Growth and Salinity Tolerance in Wheat (Triticum aestivum)

2020 ◽  
Author(s):  
Chao Ji ◽  
Huimei Tian ◽  
Xiaohui Wang ◽  
Liping Hao ◽  
Changdong Wang ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Salt Stress ◽  
Plant Growth ◽  
Rhizosphere Soil ◽  
Yellow River ◽  
Plant Growth Promoting Bacteria ◽  
Total N ◽  
Available N ◽  
Plant Growth Promoting ◽  
Growth Promoting

Abstract Background : Certain plant growth-promoting bacteria (PGPB) reduce salt stress damage in plants. Bacillus subtilis HG-15 is a halotolerant bacterium (able to withstand NaCl concentrations as high as 30%) isolated from the wheat rhizoplane in the Yellow River delta. A qualitative and quantitative investigation of the plant growth-promoting characteristics of this strain confirmed nitrogen fixation, potassium dissolution, and ammonia, plant hormone, 1-aminocyclopropane-1-carboxylic acid deaminase, and proline production abilities. B. subtilis HG-15 colonization of wheat roots, stems, and leaves was examined via scanning electron microscopy , rep-PCR, and double antibiotic screening.Results : Compared with a no B. subtilis HG-15 treatment control, in rhizosphere soil inoculated with the HG-15 strain, the pH (1.08–2.69%), electrical conductivity (3.17–11.48%), and Na + (12.98–15.55%) concentrations significantly decreased ( p < 0.05). Inoculation with the HG-15 strain increased the total N, available N, organic matter, K + , Ca 2+ , and Mg 2+ concentrations in the rhizosphere soil of wheat. Under non-salt stress (0.15% NaCl), low-salt stress (0.25% NaCl), and high-salt stress (0.35% NaCl) conditions, respectively, this strain also significantly increased ( p < 0.05) the dry weight (17.76%, 24.46%, 9.31%), fresh weight (12.80%, 20.48%, 7.43%), plant height (7.79%, 5.86%, 13.13%), root length (10.28%, 17.87%, 48.95%), and other wheat parameters. Through redundancy analysis and Pearson correlation analyses, photosynthesis, biomass accumulation, and osmotic regulation by the wheat plants showed a significant negative correlation with pH, EC, and Na + concentrations in rhizosphere soil.Conclusions : Our results indicated that B . subtilis HG-15 can effectively improve the growth of wheat and elicit induced systemic tolerance in these plant, thus, showing its potential as a microbial inoculant that can protect wheat in salt stress conditions. Furthermore, we determined that the rhizoplane of saline-alkali land plants is an important reservoir for salt-tolerant PGPB.

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

Effect of plant growth promoting bacteria and drought on spring maize (Zea mays L.)

2020 ◽  
Vol 53 (2) ◽  
Author(s):  
Muhammad Mubeen ◽  
Asghari Bano ◽  
Barkat Ali ◽  
Zia Ul Islam ◽  
Ashfaq Ahmad ◽  
...  
Keyword(s):  
Zea Mays ◽  
Plant Growth ◽  
Zea Mays L ◽  
Plant Growth Promoting Bacteria ◽  
Spring Maize ◽  
Plant Growth Promoting ◽  
Growth Promoting
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