scholarly journals Effect of Plant Growth Promoting Rhizobacteria (PGPR) on Increasing the Activity of Defense Enzymes in Tomato Plants

2020 ◽  
Vol 5 (6) ◽  
pp. 1474-1479
Author(s):  
Fadhila Rahmi Joni ◽  
Hasmiandy Hamid ◽  
Yulmira Yanti
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Defense Enzymes ◽  
Tomato Plants ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Induction of Bacterial Canker Resistance in Tomato Plants Using Plant Growth Promoting Rhizobacteria

2019 ◽  
Vol 13 (1) ◽  
pp. 215-222 ◽  
Author(s):  
Yuliya Kolomiiets ◽  
Ivan Grygoryuk ◽  
Artur Likhanov ◽  
Lyudmila Butsenko ◽  
Yaroslav Blume
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Cell Suspensions ◽  
Systemic Resistance ◽  
Plant Growth Promoting Bacteria ◽  
Bacterial Canker ◽  
Tomato Plants ◽  
High Productivity ◽  
Plant Growth Promoting ◽  
Growth Promoting

Background: By inducing the production of inhibitory allelochemicals and mechanisms of systemic resistance plant growth promoting bacteria (PGPB) help plants to cope with stresses. Materials and Methods: In this study cell suspensions of Bacillus subtilis, Pseudomonas fluorescens or Azotobacter chroococcum were used to test the efficacy of these PGPB in inducing resistance in tomato (Lycopersicon esculentum Mill) against Clavibacter michiganensis subsp michiganensis, a bacteria known to cause canker disease. To test this hypothesis, seedlings of Chaika variety, characterized by short growing, early-ripening, high productivity and resistance against fusarium and the C. michiganensis strain ІZ-38 isolated in Kyiv were employed. Results and Conclusion: The use of cell suspensions of the PGPB B. subtilis, A. chroococcum or P. fluorescens induced an increment in the resistance of tomato plants against the causative agent of bacterial canker (C. michiganensis subsp. michiganensis) by 42–50%. PGPB in fact promoted in C. michiganensis infected tomato plants: i) the accumulation of chlorophyll a and b and carotenoids; ii) the thickening of the upper and lower epidermis of leaves; iii) the deposition of biopolymers with protective properties in epidermal cells; iv) the activity of the peroxidase enzyme and v) the net productivity of photosynthesis.

scholarly journals Transgenic tomato plants alter quorum sensing in plant growth-promoting rhizobacteria

2008 ◽  
Vol 6 (5) ◽  
pp. 442-452 ◽  
Author(s):  
Jorge Barriuso ◽  
Beatriz Ramos Solano ◽  
Rupert G. Fray ◽  
Miguel Cámara ◽  
Anton Hartmann ◽  
...  
Keyword(s):  
Quorum Sensing ◽  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Transgenic Tomato ◽  
Tomato Plants ◽  
Transgenic Tomato Plants ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals PGPR Modulation of Secondary Metabolites in Tomato Infested with Spodoptera litura

Agronomy ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 778 ◽  
Author(s):  
Bani Kousar ◽  
Asghari Bano ◽  
Naeem Khan
Keyword(s):  
Secondary Metabolites ◽  
Plant Growth ◽  
Spodoptera Litura ◽  
High Performance ◽  
Plant Growth Promoting Rhizobacteria ◽  
Growth And Yield ◽  
Infected Leaf ◽  
Tomato Plants ◽  
Plant Growth Promoting ◽  
Growth Promoting

The preceding climate change demonstrates overwintering of pathogens that lead to increased incidence of insects and pest attack. Integration of ecological and physiological/molecular approaches are imperative to encounter pathogen attack in order to enhance crop yield. The present study aimed to evaluate the effects of two plant growth promoting rhizobacteria (Bacillus endophyticus and Pseudomonas aeruginosa) on the plant physiology and production of the secondary metabolites in tomato plants infested with Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae). The surface sterilized seeds of tomato were inoculated with plant growth promoting rhizobacteria (PGPR) for 3–4 h prior to sowing. Tomato leaves at 6 to 7 branching stage were infested with S. litura at the larval stage of 2nd instar. Identification of secondary metabolites and phytohormones were made from tomato leaves using thin-layer chromatography (TLC) and high performance liquid chromatography (HPLC) and fourier-transform infrared spectroscopy (FTIR). Infestation with S. litura significantly decreased plant growth and yield. The PGPR inoculations alleviated the adverse effects of insect infestation on plant growth and fruit yield. An increased level of protein, proline and sugar contents and enhanced activity of superoxide dismutase (SOD) was noticed in infected tomato plants associated with PGPR. Moreover, p-kaempferol, rutin, caffeic acid, p-coumaric acid and flavonoid glycoside were also detected in PGPR inoculated infested plants. The FTIR spectra of the infected leaf samples pre-treated with PGPR revealed the presence of aldehyde. Additionally, significant amounts of indole-3-acetic acid (IAA), salicylic acid (SA) and abscisic acid (ABA) were detected in the leaf samples. From the present results, we conclude that PGPR can promote growth and yield of tomatoes under attack and help the host plant to combat infestation via modulation in IAA, SA, ABA and other secondary metabolites.

scholarly journals Use of plant growth promoting rhizobacteria (PGPRs) in the mitigation of water deficiency of tomato plants (Solanum lycopersicum L.)

2021 ◽  
Vol 22 (1) ◽  
pp. 167-177
Author(s):  
Andras Nemenyi ◽  
Bulgan ANDRYEI ◽  
Kitti Zsuzsanna HORVÁTH ◽  
Stella AGYEMANG DUAH ◽  
Sándor TAKÁCS ◽  
...  
Keyword(s):  
Plant Growth ◽  
Solanum Lycopersicum ◽  
Plant Growth Promoting Rhizobacteria ◽  
Water Deficiency ◽  
Tomato Plants ◽  
Solanum Lycopersicum L ◽  
Plant Growth Promoting ◽  
Growth Promoting
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