scholarly journals The effect of flax seed inoculation by Azospirillum brasilense on flax yield and its quality

2011 ◽  
Vol 52 (No. 9) ◽  
pp. 402-406 ◽  
Author(s):  
N. Mikhailouskaya
Keyword(s):  
Azospirillum Brasilense ◽  
Soil Management ◽  
Flax Seed ◽  
Negative Effects ◽  
Seed Inoculation ◽  
Growth Promoting ◽  
Biological Management ◽  
High Concentrations ◽  
N Requirement ◽  
Ecology And Economy

Field experiment demonstrated the benefit resulting from biological soil management including the use of N<sub>2</sub>-fixing and growth promoting bacteria A. brasilense B-4485 for long-fibred flax. Seed inoculation by A. brasilense B-4485 was equivalent to the introduction of 15 kg/ha of N that provided the possibility of partial flax N requirement supply. Treatment A. brasilense + N<sub>15</sub>P<sub>60</sub>K<sub>90</sub> is considered to be the most profitable management in regard to flax yield and its quality, and is comparable to N<sub>30</sub>P<sub>60</sub>K<sub>90</sub> treatment. Biological management allows preventing high concentrations of N in soil, excludes lodging and negative effects on flax yield and its quality. Implementation of biological management for flax nutrition may be profitable for both ecology and economy of long-fibered flax growing.

Interactive effect of biochar and plant growth-promoting bacterial endophytes on ameliorating salinity stress in maize

2015 ◽  
Vol 42 (8) ◽  
pp. 770 ◽  
Author(s):  
Saqib Saleem Akhtar ◽  
Mathias Neumann Andersen ◽  
Muhammad Naveed ◽  
Zahir Ahmad Zahir ◽  
Fulai Liu
Keyword(s):  
Plant Growth ◽  
Salinity Stress ◽  
Crop Production ◽  
Interactive Effect ◽  
Nutrient Balance ◽  
Bacterial Strains ◽  
Negative Effects ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Salt Affected Soils

The objective of this work was to study the interactive effect of biochar and plant growth-promoting endophytic bacteria containing 1-aminocyclopropane-1-carboxylate deaminase and exopolysaccharide activity on mitigating salinity stress in maize (Zea mays L.). The plants were grown in a greenhouse under controlled conditions, and were subjected to separate or combined treatments of biochar (0% and 5%, w/w) and two endophytic bacterial strains (Burkholderia phytofirmans (PsJN) and Enterobacter sp. (FD17)) and salinity stress. The results indicated that salinity significantly decreased the growth of maize, whereas both biochar and inoculation mitigated the negative effects of salinity on maize performance either by decreasing the xylem Na+ concentration ([Na+]xylem) uptake or by maintaining nutrient balance within the plant, especially when the two treatments were applied in combination. Moreover, in biochar-amended saline soil, strain FD17 performed significantly better than did PsJN in reducing [Na+]xylem. Our results suggested that inoculation of plants with endophytic baterial strains along with biochar amendment could be an effective approach for sustaining crop production in salt-affected soils.

scholarly journals Compatibility of Azospirillum brasilense with fungicide and insecticide and its effects on the physiological quality of wheat seeds

2018 ◽  
Vol 39 (2) ◽  
pp. 855 ◽  
Author(s):  
Janete Denardi Munareto ◽  
Thomas Newton Martin ◽  
Tania Maria Müller ◽  
Ubirajara Russi Nunes ◽  
Guilherme Bergeijer da Rosa ◽  
...  
Keyword(s):  
Azospirillum Brasilense ◽  
Seed Treatment ◽  
Accelerated Aging ◽  
Triticum Aestivum L ◽  
Wheat Cultivars ◽  
Pests And Diseases ◽  
Physiological Quality ◽  
Growth Promoting ◽  
Germination Vigor

Seed treatment is a practice that helps the initial establishment of the crop without the effects caused by pests and diseases. The association of diazotrophic bacteria with grasses has been used in the supply of nitrogen to plants; however, these microorganisms produce growth-promoting substances, which promote benefits in the growth and development of the crops. Thus, the objective of this study was to evaluate the compatibility of Azospirillum brasilense associated with the fungicide difenoconazole and the insecticide thiamethoxam by observing the effects on the quality of seed emergence of three wheat cultivars (Triticum aestivum L.). Three wheat cultivars, arranged in a 4 x 2 factorial system with four replicates, were tested. The treatments were the control; difenoconazole (Spectro® at a dose of 150 mL per 100 kg of seed); thiamethoxam (Cruiser® FS 350 at a dose of 200 mL per 100 kg seed) and difenoconazole + thiamethoxam, applied on wheat cultivars TBIO Mestre, TBIO Itaipu and TBIO Sinuelo. Bacteria from the Azospirillum genus were used in the inoculation. The wheat seed retains its quality when it checks the germination, vigor and independent accelerated aging, whether or not fungicide, insecticide and A. brasilense were used. The insecticide thiamethoxam increased the length of shoots and roots and provided compatibility with A. brasilense, and fungicide inhibited the length of shoots and roots and was antagonistic to the bacterium A. brasilense.

Elevated non-esterified fatty acids impair survival and promote lipid accumulation and pro-inflammatory cytokine production in bovine endometrial epithelial cells

2018 ◽  
Vol 30 (12) ◽  
pp. 1770 ◽  
Author(s):  
W. Chankeaw ◽  
Y. Z. Guo ◽  
R. Båge ◽  
A. Svensson ◽  
G. Andersson ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Epithelial Cells ◽  
Cell Viability ◽  
Lipid Accumulation ◽  
Negative Effects ◽  
Inflammatory Cytokine Production ◽  
Esterified Fatty Acids ◽  
Proliferation And Apoptosis ◽  
High Concentrations ◽  
Endometrial Epithelial Cells

Elevated non-esterified fatty acids (NEFAs) are associated with negative effects on bovine theca, granulosa and oviductal cells but the effects of NEFAs on bovine endometrial epithelial cells (bEECs) are not as well documented. The objective of this study was to define the effects of NEFAs on bEECs. Postprimary bEECs were treated with 150, 300 or 500 µM of either palmitic acid (PA), stearic acid (SA) or oleic acid (OA) or a mixture of NEFAs (150 µM of each FA) or 0.5% final concentration of vehicle ethanol (control). Viability and proliferation of bEECs exposed to 150 µM of each NEFA or a mixture of NEFAs were unaffected. Increased lipid accumulation was found in all treated groups (P < 0.01). In cells exposed to 500 µM of each NEFA and 300 µM PA decreased cell viability (P < 0.001), proliferation (P < 0.05) and increased apoptosis (P < 0.05) were observed. Treatment with 500 µM OA, PA and SA had the strongest effects on cell viability, proliferation and apoptosis (P < 0.05). Treatment with PA and OA increased interleukin-6 (IL-6) concentrations (P < 0.05), whereas only the highest concentration of PA, OA and SA stimulated IL-8 production (P < 0.05). These results suggest that high concentrations of NEFAs may impair endometrial function with more or less pronounced effects depending on the type of NEFA and time of exposure.

scholarly journals Draft Genome Sequence of Plant Growth-Promoting Drought-Tolerant Bacillus sp. Strain CMAA 1363 Isolated from the Brazilian Caatinga Biome

2017 ◽  
Vol 5 (5) ◽  
Author(s):  
Vanessa Nessner Kavamura ◽  
Suikinai Nobre Santos ◽  
Rodrigo Gouvêa Taketani ◽  
Rafael Leandro Figueiredo Vasconcellos ◽  
Itamar Soares Melo
Keyword(s):  
Plant Growth ◽  
Growth Promotion ◽  
Draft Genome ◽  
Negative Effects ◽  
Genomic Features ◽  
Drought Tolerant ◽  
Caatinga Biome ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Plant Growth Promoting Traits

ABSTRACT The strain of Bacillus sp. CMAA 1363 was isolated from the Brazilian Caatinga biome and showed plant growth-promoting traits and ability to promote maize growth under drought stress. Sequencing revealed genes involved in stress response and plant growth promotion. These genomic features might aid in the protection of plants against the negative effects imposed by drought.

Soil Management for Conservation and Sustainable Rice Production in an Irrigated Area of Eastern Nigeria

1996 ◽  
Vol 25 (3) ◽  
pp. 151-156 ◽  
Author(s):  
Charles L.A. Asadu
Keyword(s):  
Organic Matter ◽  
Bulk Density ◽  
Relative Proportion ◽  
Soil Management ◽  
Infiltration Rate ◽  
Water Infiltration ◽  
Negative Effects ◽  
Irrigation Project ◽  
Irrigated Area ◽  
Cropping Season

An comparison of soilmanagement techniques In the different irrigation zones of Lower Anambra Irrigation Project (LAIP) In eastern Nigeria showed that heavy use of machinery led to Increases In bulk density and decreases In field water Infiltration rate. The relative proportion of clay In the irrigated fields Increased as a result of Irrigation, suggesting that mobilized clay from uncemented main and distribution canals Is carried and deposited In the rice fields. Both Irrigation and the use of machinery have had substantial negative effects on soli nutrient levels, and there is a danger of this process continuing. Soli management for sustainable production in the area should centre on applying organic matter in combination with inorganic fertilizers, monitoring the soli properties on yearly basis before the cropping season for fertilizer and lime recommendations, and varying the depth of tillage to Increase or maintain the effective soli depth.

scholarly journals Health Properties and Composition of Honeysuckle Berry Lonicera caerulea L. An Update on Recent Studies

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 749 ◽  
Author(s):  
Gołba ◽  
Sokół-Łętowska ◽  
Kucharska
Keyword(s):  
Diabetes Mellitus ◽  
European Union ◽  
Antioxidant Activity ◽  
Eastern Europe ◽  
Traditional Food ◽  
Negative Effects ◽  
Lonicera Caerulea ◽  
Potential Benefits ◽  
Hydroxybenzoic Acids ◽  
High Concentrations

Lonicera caerulea L., also known as haskap or honeysuckle berry, is a fruit commonly planted in eastern Europe, Canada and Asia. The fruit was registered as a traditional food from a third country under European Union regulations only on December 2018. It is resistant to cold, pests, various soil acidities and diseases. However, its attractiveness is associated mostly with its health properties. The fruit shows anticancer, anti-inflammatory, and antioxidant activity—important factors in improving health. These features result from the diverse content of phytochemicals in honeysuckle berries with high concentrations of phytocompounds, mainly hydroxycinnamic acids, hydroxybenzoic acids, flavanols, flavones, isoflavones, flavonols, flavanones and anthocyanins but also iridoids, present in the fruit in exceptional amounts. The content and health properties of the fruit were identified to be dependent on cultivar, genotype and the place of harvesting. Great potential benefits of this nutritious food are its ability to minimize the negative effects of UV radiation, diabetes mellitus and neurodegenerative diseases, and to exert hepato- and cardioprotective activity.

scholarly journals Synergistic effects of seed inoculation with Azospirillum brasilense and nitrogen sources on double cropped maize production in tropical savanna of Brazil

2016 ◽  
Vol 10 (07) ◽  
pp. 1061-1068 ◽  
Author(s):  
Flávio Hiroshi Kaneko ◽  
◽  
Michelle Traete Sabundjian ◽  
João Paulo Ferreira ◽  
Douglas de Castilho Gitti ◽  
...  
Keyword(s):  
Azospirillum Brasilense ◽  
Synergistic Effects ◽  
Nitrogen Sources ◽  
Tropical Savanna ◽  
Maize Production ◽  
Seed Inoculation

Ultrastructure of interaction in alginate beads between the microalgaChlorella vulgariswith its natural associative bacteriumPhyllobacterium myrsinacearumand with the plant growth-promoting bacteriumAzospirillum brasilense

2001 ◽  
Vol 47 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Vladimir K Lebsky ◽  
Luz E Gonzalez-Bashan ◽  
Yoav Bashan
Keyword(s):  
Wastewater Treatment ◽  
Plant Growth ◽  
Azospirillum Brasilense ◽  
Bacterial Species ◽  
Alginate Beads ◽  
Transmission Electron ◽  
Associative Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Treatment Water

Chlorella vulgaris, a microalga often used in wastewater treatment, was coimmobilized and coincubated either with the plant growth-promoting bacterium Azospirillum brasilense, or with its natural associative bacterium Phyllobacterium myrsinacearum, in alginate beads designed for advanced wastewater treatment. Interactions between the microalga and each of the bacterial species were followed using transmission electron microscopy for 10 days. Initially, most of the small cavities within the beads were colonized by microcolonies of only one microorganism, regardless of the bacterial species cocultured with the microalga. Subsequently, the bacterial and microalgal microcolonies merged to form large, mixed colonies within the cavities. At this stage, the effect of bacterial association with the microalga differed depending on the bacterium present. Though the microalga entered a senescence phase in the presence of P. myrsinacearum, it remained in a growth phase in the presence of A. brasilense. This study suggests that there are commensal interactions between the microalga and the two plant associative bacteria, and that with time the bacterial species determined whether the outcome for the microalga is senescence or continuous multiplication.Key words: Azospirillum, Chlorella, Phyllobacterium, wastewater treatment, water bioremediation.

scholarly journals Protection of Tomato Seedlings against Infection by Pseudomonas syringae pv. Tomato by Using the Plant Growth-Promoting Bacterium Azospirillum brasilense

2002 ◽  
Vol 68 (6) ◽  
pp. 2637-2643 ◽  
Author(s):  
Yoav Bashan ◽  
Luz E. de-Bashan
Keyword(s):  
Plant Growth ◽  
Pseudomonas Syringae ◽  
Azospirillum Brasilense ◽  
Dry Weight ◽  
Tomato Plants ◽  
Bacterial Speck ◽  
Plant Growth Promoting ◽  
Bacterial Speck Disease ◽  
Growth Promoting ◽  
Mist Chamber

ABSTRACT Pseudomonas syringae pv. tomato, the causal agent of bacterial speck of tomato, and the plant growth-promoting bacterium Azospirillum brasilense were inoculated onto tomato plants, either alone, as a mixed culture, or consecutively. The population dynamics in the rhizosphere and foliage, the development of bacterial speck disease, and their effects on plant growth were monitored. When inoculated onto separate plants, the A. brasilense population in the rhizosphere of tomato plants was 2 orders of magnitude greater than the population of P. syringae pv. tomato (107 versus 105 CFU/g [dry weight] of root). Under mist chamber conditions, the leaf population of P. syringae pv. tomato was 1 order of magnitude greater than that of A. brasilense (107 versus 106 CFU/g [dry weight] of leaf). Inoculation of seeds with a mixed culture of the two bacterial strains resulted in a reduction of the pathogen population in the rhizosphere, an increase in the A. brasilense population, the prevention of bacterial speck disease development, and improved plant growth. Inoculation of leaves with the mixed bacterial culture under mist conditions significantly reduced the P. syringae pv. tomato population and significantly decreased disease severity. Challenge with P. syringae pv. tomato after A. brasilense was established in the leaves further reduced both the population of P. syringae pv. tomato and disease severity and significantly enhanced plant development. Both bacteria maintained a large population in the rhizosphere for 45 days when each was inoculated separately onto tomato seeds (105 to 106 CFU/g [dry weight] of root). However, P. syringae pv. tomato did not survive in the rhizosphere in the presence of A. brasilense. Foliar inoculation of A. brasilense after P. syringae pv. tomato was established on the leaves did not alleviate bacterial speck disease, and A. brasilense did not survive well in the phyllosphere under these conditions, even in a mist chamber. Several applications of a low concentration of buffered malic acid significantly enhanced the leaf population of A. brasilense (>108 CFU/g [dry weight] of leaf), decreased the population of P. syringae pv. tomato to almost undetectable levels, almost eliminated disease development, and improved plant growth to the level of uninoculated healthy control plants. Based on our results, we propose that A. brasilense be used in prevention programs to combat the foliar bacterial speck disease caused by P. syringae pv. tomato.

scholarly journals Promotion of rice growth and productivity as a result of seed inoculation with Azospirillum brasilense

2020 ◽  
Vol 16 (6) ◽  
pp. 765-776
Author(s):  
Francisco Guimarães Vandeir ◽  
Klein Jeferson ◽  
Barbosa Ferreira Marcos ◽  
Kestring Klein Débora
Keyword(s):  
Azospirillum Brasilense ◽  
Rice Growth ◽  
Seed Inoculation
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