scholarly journals Antifungal and plant growth promoting activity with Bacillus amyloliquefaciens in Aeonium subs.

2021 ◽  
Vol 1 (2) ◽  
pp. 042-050
Author(s):  
Domenico Prisa
Keyword(s):  
Fusarium Oxysporum ◽  
Plant Resistance ◽  
Bacillus Amyloliquefaciens ◽  
Growth Cycle ◽  
Root Weight ◽  
Plant Growth Promoting ◽  
Number Of Leaves ◽  
Plant Growth Promoting Activity ◽  
Growth Promoting ◽  
Succulent Plants

In this work, the biostimulant and biocontrol capacity of Bacillus amyloliquefaciens in succulent plants such as Aeonium was evaluated. The specific objectives were in particular: (i) Evaluate whether the use of this bacterium can increase the growth rate of Aeonium plants that typically have a slow growth cycle; (ii) evaluate if the use of B. amyloliquefaciens can lead to increased plant resistance to Fusarium oxysporum; (iii) considered if utilization of B. amyloliquefaciens allows for increased plant resistance to water and nutrient stress. The experimentation showed a significant improvement of the agronomic parameters analyzed on all Aeonium plants treated with Bacillus amyloliquefaciens. In general there was a significant increase in plant height, number of leaves, vegetative and root weight, number of new shoots. In addition, Aeonium goochiae and sunburst show a better protection against the fungus Fusarium oxysporum. The trial also highlighted the ability of B. amyloliquefaciens to guarantee a productive and qualitative production of the plants even under conditions of reduced water and nutritional resources. Plants, thanks to the interaction with soil microorganisms, can reach higher nutrient and water resources, resulting in greater resistance to abiotic stresses and better quality in the cultivation cycle.

scholarly journals Simultaneous and sequential based co-fermentations of Trichoderma asperellum GDFS1009 and Bacillus amyloliquefaciens 1841: a strategy to enhance the gene expression and metabolites to improve the bio-control and plant growth promoting activity

2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Valliappan Karuppiah ◽  
Murugappan Vallikkannu ◽  
Tingting Li ◽  
Jie Chen
Keyword(s):  
Plant Growth ◽  
Biotic Stress ◽  
Bacillus Amyloliquefaciens ◽  
Stress Conditions ◽  
Maize Plant ◽  
Inoculation Method ◽  
Sequential Inoculation ◽  
Plant Growth Promoting ◽  
Plant Growth Promoting Activity ◽  
Growth Promoting

Abstract Background The consequence of simultaneous and sequential inoculation of T. asperellum and B. amyloliquefaciens cultures with respect to growth rate, differential expression of vital genes and metabolites were examined. Results The competition was observed between T. asperellum and B. amyloliquefaciens under co-cultivation. The proliferation of Trichoderma was reduced in the simultaneous inoculation (TB1) method, possibly due to the fastest growth of Bacillus. Both T. asperellum and B. amyloliquefaciens were proliferated in sequential inoculation method (TB2). The sequential inoculation method (TB2) upregulated the expression of metabolites and vital genes (sporulation, secondary metabolites, mycoparasitism enzymes and antioxidants) in Trichoderma and downregulated in Bacillus and vice versa in co-inoculation method (TB1). The metabolic changes in the co-culture promoted the maize plant growth and defense potential under normal and biotic stress conditions. Conclusion The metabolites produced by the co-culture of T. asperellum and B. amyloliquefaciens improved the maize plant growth and defense potential under normal and biotic stress conditions.

scholarly journals Analysis of plant growth-promoting properties of Bacillus amyloliquefaciens UCMB5113 using Arabidopsis thaliana as host plant

Planta ◽  
2016 ◽  
Vol 245 (1) ◽  
pp. 15-30 ◽  
Author(s):  
Shashidar Asari ◽  
Danuše Tarkowská ◽  
Jakub Rolčík ◽  
Ondřej Novák ◽  
David Velázquez Palmero ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Growth ◽  
Host Plant ◽  
Bacillus Amyloliquefaciens ◽  
Plant Growth Promoting ◽  
Growth Promoting

Isolation, identification and characterization of native plant growth promoting bacteria and their plant growth promotion in Zea mays

2021 ◽  
Vol 16 (8) ◽  
pp. 75-80
Author(s):  
Pitchaiah Pelapudi ◽  
Sasikala Ch ◽  
Swarnabala Ganti
Keyword(s):  
Plant Growth ◽  
Plant Growth Promotion ◽  
Root Length ◽  
Growth Promotion ◽  
Shoot Length ◽  
Root Weight ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Shoot Weight

In the present rapid growing world, need for a sustainable agricultural practice which helps in meeting the adequate food demand is much needed. In this context, plant growth promoting bacteria were brought into the spot light by the researchers. Though the plant growth promoting bacteria have several beneficial applications, due to some of the disadvantages in the field conditions, they lagged behind. In the current research work, native PGPR were isolated from the rhizosphere soil samples of maize with an aim to isolate the nitrogen fixing, phosphate solubilising and potash solubilising bacteria. Out of the several isolates, potent PGPR isolates viz., Paenibacillus durus PCPB067, Bacillus megaterium PCBMG041 and Paenibacillus glucanolyticus PCPG051 were isolated and identified by using the 16 S rRNA gene sequencing studies. Genomic DNA sequences obtained were deposited in the NCBI Genbank and accession numbers were assigned as MW793452, MW793456 and MW843633. In order to check the efficacy of the PGPR isolates, pot trials were conducted by taking maize as the host plant. Several parameters viz. shoot length, shoot weight, root length, root weight and weight of the seeds were tested in which PGP treatment showed good results (shoot length - 187±3.5 cm, shoot weight - 31±4 g, root length - 32±3.6 cm, root weight - 17±2 g, yield- 103.3±6.1 g) when compared to the chemical fertilizer treatment (shoot length - 177±3.5 cm, shoot weight - 25±3.6 g, root length - 24±3.5 cm, root weight - 14.6±1.52 g, yield- 85.6±7.6 g). Based on the results, it can be stated that these native PGPR isolates can be effectively used in the plant growth promotion of maize.

scholarly journals Novel Effects of Leonardite-Based Applications on Sugar Beet

2021 ◽  
Vol 12 ◽  
Author(s):  
Maria C. Della Lucia ◽  
Giovanni Bertoldo ◽  
Chiara Broccanello ◽  
Laura Maretto ◽  
Samathmika Ravi ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Auxin Transport ◽  
Foliar Application ◽  
Transport Proteins ◽  
Expression Level ◽  
Compositional Structure ◽  
Gene Coding ◽  
Plant Growth Promoting ◽  
Plant Growth Promoting Activity ◽  
Growth Promoting

The present study aimed to explore the effects of foliar application of a leonardite-based product on sugar beet (Beta vulgaris L.) plants grown in the field. The approach concerned the evaluation of the community compositional structure of plant endophytic bacteria through a metabarcoding approach, the expression level of a gene panel related to hormonal metabolism and signaling, and the main sugar beet productivity traits. Results indicated that plants treated with leonardite (dosage of 2,000 ml ha–1, dilution 1:125, 4 mg C l–1) compared with untreated ones had a significant increase (p < 0.05) in (i) the abundance of Oxalicibacterium spp., recognized to be an endophyte bacterial genus with plant growth-promoting activity; (ii) the expression level of LAX2 gene, coding for auxin transport proteins; and (iii) sugar yield. This study represents a step forward to advance our understanding of the changes induced by leonardite-based biostimulant in sugar beet.

scholarly journals Agronomic Biofortification of Cayenne Pepper Cultivars with Plant Growth-Promoting Rhizobacteria and Chili Residue in a Chinese Solar Greenhouse

2021 ◽  
Vol 9 (11) ◽  
pp. 2398
Author(s):  
Ibraheem Olamide Olasupo ◽  
Qiuju Liang ◽  
Chunyi Zhang ◽  
Md Shariful Islam ◽  
Yansu Li ◽  
...  
Keyword(s):  
Plant Growth ◽  
Water Use Efficiency ◽  
Water Use ◽  
Bacillus Amyloliquefaciens ◽  
Net Photosynthesis ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Use Efficiency ◽  
Growth Promoting ◽  
Agronomic Biofortification

Agronomic biofortification of horticultural crops using plant growth-promoting rhizobacteria (PGPR) under crop residue incorporation systems remains largely underexploited. Bacillus subtilis (B1), Bacillus laterosporus (B2), or Bacillus amyloliquefaciens (B3) was inoculated on soil containing chili residue, while chili residue without PGPR (NP) served as the control. Two hybrid long cayenne peppers, succeeding a leaf mustard crop were used in the intensive cultivation study. Net photosynthesis, leaf stomatal conductance, transpiration rate, photosynthetic water use efficiency, shoot and root biomass, and fruit yield were evaluated. Derivatives of folate, minerals, and nitrate contents in the pepper fruits were also assessed. B1 elicited higher net photosynthesis and photosynthetic water use efficiency, while B2 and B3 had higher transpiration rates than B1 and NP. B1 and B3 resulted in 27–36% increase in pepper fruit yield compared to other treatments, whereas B3 produced 24–27.5% and 21.9–27.2% higher 5-methyltetrahydrofolate and total folate contents, respectively, compared to B1 and NP. However, chili residue without PGPR inoculation improved fruit calcium, magnesium, and potassium contents than the inoculated treatments. ‘Xin Xian La 8 F1’ cultivar had higher yield and plant biomass, fruit potassium, total soluble solids, and total folate contents compared to ‘La Gao F1.’ Agronomic biofortification through the synergy of Bacillus amyloliquefaciens and chili residue produced better yield and folate contents with a trade-off in the mineral contents of the greenhouse-grown long cayenne pepper.

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