scholarly journals Assessing the Impact of Biologically Synthesized ZnO Nanoparticles as Source of Nutrient on the Growth of Zea mays L.

2020 ◽  
Author(s):  
Sumera Sabir ◽  
Muhammad Asif Zahoor ◽  
Muhammad waseem ◽  
Muhammad Hussnain Siddique ◽  
Muhammad Shafique ◽  
...  
Keyword(s):  
Zea Mays ◽  
Electron Microscope ◽  
Plant Growth ◽  
Zea Mays L ◽  
Growth Promotion ◽  
Growth Parameters ◽  
Growth Enhancement ◽  
Zno Nps ◽  
Alternate Source ◽  
The Impact

Abstract Nano-fertilizer(s), an emerging field of agriculture, is alternate option for enhancement of plant growth replacing the synthetic fertilizers. For example, zinc oxide nanoparticles (ZnO NPs) can be used as the zinc source for plants. The present investigation was carried out to assess the role of ZnO NPs in growth promotion of maize plants. ZnO NPs were synthesized using Bacillus sp ., which were characterized using Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM) and X-ray diffraction (XRD). The different concentrations of ZnO NPs ( i . e . 0, 2, 4, 6, 8, 16 mg/L) for growth enhancement of maize ( Zea mays L.) were explored in pot culture experiment. It was observed that size of ZnO NPs ranged between 16 and 20 nm. A significant increase in growth parameters like shoot length (61.7 %), root length (56.9 %) and significantly higher level of protein was observed in the treated plants as compared to control The overall pattern for growth biomarkers including the protein contents was maximum at 8mg/L of ZnO NPs. It was observed that application of biologically synthesized ZnO NPs has improved majority of growth biomarkers including plant growth parameters, protein contents and leaf area. All these parameters were positively influenced by ZnO NPs. Therefore, biosynthesized ZnO NPs could be considered as an alternate source of nutrient in Zn deficient soils for promoting the modern agriculture.

scholarly journals Biosynthesis of ZnO Nanoparticles Using Bacillus Subtilis: Characterization and Nutritive Significance for Promoting Plant Growth in Zea mays L

Dose-Response ◽  
2020 ◽  
Vol 18 (3) ◽  
pp. 155932582095891
Author(s):  
Sumera Sabir ◽  
Muhammad Asif Zahoor ◽  
Muhammad Waseem ◽  
Muhammad Hussnain Siddique ◽  
Muhammad Shafique ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Plant Growth ◽  
Growth Promotion ◽  
Growth Parameters ◽  
X Ray Diffraction ◽  
Zno Nps ◽  
Modern Agriculture ◽  
Transmission Electron ◽  
Alternate Source ◽  
20 Nm

Nano-fertilizer(s), an emerging field of agriculture, is alternate option for enhancement of plant growth replacing the synthetic fertilizers. Zinc oxide nanoparticles (ZnO NPs) can be used as the zinc source for plants. The present investigation was carried out to assess the role of ZnO NPs in growth promotion of maize plants. Biosynthesized ZnO NPs (using Bacillus sp) were characterized using Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), X-ray diffraction (XRD) and Zeta potential. Different concentrations of ZnO NPs (2, 4, 8, 16 mg/L) were explored in pot culture experiment. Size of ZnO NPs ranged between 16 and 20 nm. A significant increase in growth parameters like shoot length (61.7%), root length (56.9%) and significantly higher level of protein was observed in the treated plants. The overall pattern for growth biomarkers including the protein contents was maximum at 8 mg/L of ZnO NPs. It was observed that application of biosynthesized ZnO NPs has improved majority of growth biomarkers including plant growth parameters, protein contents and leaf area. Therefore, biosynthesized ZnO NPs could be considered as an alternate source of nutrient in Zn deficient soils for promoting the modern agriculture.

scholarly journals Gluconacetobacter diazotrophicus Pal5 Enhances Plant Robustness Status under the Combination of Moderate Drought and Low Nitrogen Stress in Zea mays L.

2021 ◽  
Vol 9 (4) ◽  
pp. 870
Author(s):  
Muhammad Aammar Tufail ◽  
María Touceda-González ◽  
Ilaria Pertot ◽  
Ralf-Udo Ehlers
Keyword(s):  
Zea Mays ◽  
Plant Growth ◽  
Zea Mays L ◽  
Growth Promotion ◽  
Nitrogen Stress ◽  
Rrna Gene ◽  
N Fixation ◽  
Gluconacetobacter Diazotrophicus ◽  
Maize Plants ◽  
Low Nitrogen

Plant growth promoting endophytic bacteria, which can fix nitrogen, plays a vital role in plant growth promotion. Previous authors have evaluated the effect of Gluconacetobacter diazotrophicus Pal5 inoculation on plants subjected to different sources of abiotic stress on an individual basis. The present study aimed to appraise the effect of G. diazotrophicus inoculation on the amelioration of the individual and combined effects of drought and nitrogen stress in maize plants (Zea mays L.). A pot experiment was conducted whereby treatments consisted of maize plants cultivated under drought stress, in soil with a low nitrogen concentration and these two stress sources combined, with and without G. diazotrophicus seed inoculation. The inoculated plants showed increased plant biomass, chlorophyll content, plant nitrogen uptake, and water use efficiency. A general increase in copy numbers of G. diazotrophicus, based on 16S rRNA gene quantification, was detected under combined moderate stress, in addition to an increase in the abundance of genes involved in N fixation (nifH). Endophytic colonization of bacteria was negatively affected by severe stress treatments. Overall, G. diazotrophicus Pal5 can be considered as an effective tool to increase maize crop production under drought conditions with low application of nitrogen fertilizer.

Plant growth promotion and enhanced uptake of Cd by combinatorial application of Bacillus pumilus and EDTA on Zea mays L.

2020 ◽  
Vol 22 (13) ◽  
pp. 1372-1384
Author(s):  
Kashif Hayat ◽  
Saiqa Menhas ◽  
Jochen Bundschuh ◽  
Pei Zhou ◽  
Nabeel Khan Niazi ◽  
...  
Keyword(s):  
Zea Mays ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Bacillus Pumilus ◽  
Zea Mays L ◽  
Growth Promotion

scholarly journals Bio Prospecting Plant Growth-Promoting Bacteria Isolated from Maize (zea mays l.) Roots

2018 ◽  
Vol 1 (1) ◽  
pp. 1-9
Author(s):  
Lygia Vitória Galli Terasawa ◽  
Keyword(s):  
Zea Mays ◽  
Plant Growth ◽  
Zea Mays L ◽  
Growth Promotion ◽  
Early Stage ◽  
Plant Growth Promoting Bacteria ◽  
Bacillus Sp ◽  
Enzymatic Production ◽  
Plant Growth Promoting ◽  
Growth Promoting

Maize (Zea mays L.) culture has a great importance in several countries, especially in Brazil the third-largest world producer. The increase in maize production has been achieved with a high use of fungicide; however, in view of a more sustainable agriculture plant growth promoting bacteria have been explored aiming for the replacement of chemical fertilizers and biological control. In this study, we investigated the bacterial community isolated from maize roots in order to evaluate their capacity of growth promotion as well as of inhibition of fungal species associated with maize leaf diseases. All isolates evaluated were positive for at least one of the parameters evaluated-growth promotion, enzymatic production or bio control. The best results were observed for Enterobacter sp. LGMB221 and Bacillus sp. LGMB242 that showed the high potential for growth promotion, acting in the early stage of maize seedlings development. Bacillus sp. LGMB152 showed the best enzymatic results, indicating that it might play a role against pathogens, a premise supported by the antagonist activity observed. The next steps involve evaluations under field conditions to confirm if these isolates have biotechnological potential as inoculants for the maize crop. In addition, we suggest that Enterobacter strains LGMB221 and LGMB235 and Escherichia strain LGMB159 might represent new species, indicating the high diversity of bacteria in maize rhizosphere that remains to be determined.

scholarly journals Isolation and Characterization of Plant Growth Promoting Rhizobacteria for Growth Promotion of Rice (Oryza sativa L.) and Wheat (Triticum aestivum)

2021 ◽  
Vol 2 (2) ◽  
pp. 177-194
Author(s):  
Muhammad Ayyaz ◽  
Zulqurnain Khan ◽  
Nabila Tabassam ◽  
Tariq Sultan ◽  
Amjad Saeed ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Plant Growth ◽  
Growth Promotion ◽  
Growth Parameters ◽  
Oryza Sativa L ◽  
Growth Enhancement ◽  
Root Weight ◽  
Bacterial Strains ◽  
Phosphorus Solubilization ◽  
Isolation And Characterization

The use of rhizobacteria for plant growth enhancement is decades old. Still, in this era of the 21st century, biofertilizers have become the need of the day due to the health and environmental concerns associated with chemical fertilizers and pesticides. Rhizobacteria strains were isolated from the rhizosphere of rice and wheat. The selected bacterial strains' nitrogen fixation, indole acetic acid (IAA) production, phosphorus solubilization, and antifungal activity were determined on morphological, biochemical, and molecular levels. Production of IAA ranged from 6 µg/ml to 29.33 µg/ml. Ethylene production (C2H4/hr) varied from 2 µmoles to 9.8 µmoles. Maximum Phosphorus Solubilization index (7), decrease in pH (4) and Solubilization % age (0.49) was observed in WM-2 (wheat microbe). Promising results were obtained concerning antifungal activity against Rhizoctonia solani and Fusarium sp. The effect of the potential PGPR strains on the germination of rice and wheat was significantly positive in Petri plates. In the case of rice, the highest shoot length (29.27 cm) was observed by inoculation with RPR-33 (Rice isolate), and the most increased root length (9.33 cm) was observed in the treatment inoculated with RPR-42. The highest shoot fresh weight (476.67 mg/plant) was recorded in the treatment inoculated with RPR-42. The maximum root weight was 170 mg/plant in the same treatment. For wheat, all recorded growth parameters were improved significantly by wheat microbe WM-5. All the PGPR isolates showed positive results for growth parameters of wheat and rice on inoculation. So, it is suggested that these PGPR isolates may be used in potential biofertilizers.

scholarly journals Pengaruh Rizobakteria Pemacu Tumbuh dan Toleran Kekeringan serta Kelimpahan dan Akitvitas Mikroba Tanah terhadap Tanaman Jagung (Zea mays L.)

Biospecies ◽  
2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Hari KAPLI ◽  
Aris Tri WAHYUDI ◽  
Edi HUSEN
Keyword(s):  
Zea Mays ◽  
Plant Growth ◽  
Agricultural Land ◽  
Zea Mays L ◽  
Growth Parameters ◽  
Growth Promoter ◽  
In Planta ◽  
Dry Land ◽  
Drought Tolerant ◽  
Potential Land

Agricultural land in Indonesia was largely dominated by untapped potential land, almost of that potential land is dry land. Maize (Zea mays L.) is one of the staple crops that are known could be cultivated on dry land. Rizosphere has been known to containmicroorganisms that can improve the plant growth. In the previously study, we have screenedin vitro of rhizobacteria (6 isolates of Pseudomonas sp CRB and 7 isolates of Bacillus sp CR) as growth promoter of maize and drought tolerant. A total of 6 rhizobacterial formula were further applied in vivo in greenhouse to promote the growth of maize. In planta test on maize showed that formula CRB 19 and F3 (CR 83 + CRB 10) were the best formula that could enhance plant growth parameters under drought stress conditions. After that abundance and activities of microbe were analyzed by enumeration of total fungus, bacteria and actinomycetes, dehidrogease test, soil respiration test dan C-microbe test and those tests showed that formula CRB 19 and F3 (CR 83 + CRB 10) were the best formula.These formula could be recommended as inoculants of maize planted in dry land agriculture.   Keywords : drought tolerant,formulation, growth promoter, maize, rhizobacteria

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