scholarly journals Compost Amendments Based on Vinegar Residue Promote Tomato Growth and Suppress Bacterial Wilt Caused by Ralstonia Solanacearum

Pathogens ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 227 ◽  
Author(s):  
Mingming He ◽  
Mohammad Shah Jahan ◽  
Yu Wang ◽  
Jin Sun ◽  
Sheng Shu ◽  
...  
Keyword(s):  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Microbial Populations ◽  
H2o2 Production ◽  
Microbial Activities ◽  
Growth Environment ◽  
Soil Microbial ◽  
Tomato Seedlings ◽  
Vinegar Residue ◽  
Tomato Bacterial Wilt

Tomato bacterial wilt caused by Ralstonia solanacearum (RS) is one of the most devastating soil-borne diseases, and compost is to be considered as a resource-saving and environment-friendly measure to control the disease. Herein, a pot experiment was implemented to explore the effects of vinegar residue matrix amendments on the growth performances of tomato seedlings and to examine the suppression ability against bacterial wilt under vinegar residue substrate (VRS), and peat substrate (Peat) with RS inoculation. The results revealed that VRS effectively suppressed the disease incidence of bacterial wilt, increased the number of bacteria and actinomycetes, decreased fungi populations, promoted soil microbial populations and microbial activities, enhanced the growths of tomato seedlings, and modulated defense mechanism. In addition, VRS efficiently inhibited the oxidative damage in RS inoculated leaves via the regulation of excess reactive oxide species (O2•− and H2O2) production, lessening of malondialdehyde (MDA) content, and causing less membrane injury; resulting in enhancements of antioxidants enzymes activities accompanying with modulating their encoding gene expression. The transcription levels of NPR1, PIN2, PR1b, ACO1, EDS1, PR1B, MAPK3, PIN2, and RRS1 were also modulated with the pathogens inoculated in tomato leaves both in VRS and Peat treatments, which indicated that systemic-acquired resistance possesses cross-talk between salicylic acid, jasmonic acid, and the ethylene-dependent signaling pathway. Besides, the RS inoculation significantly inhibited the growth of tomato seedlings, and all growth indices of plants grown in VRS were considerably higher than those produced in Peat. Taken together, VRS represents a new strategy to control tomato bacterial wilt through boosting the soil microbial populations and microbial activities. Furthermore, VRS promotes the plant immune response to provide a better growth environment for plants surviving in disease conditions.

scholarly journals Effects of Biochar Amendment on Tomato Bacterial Wilt Resistance and Soil Microbial Amount and Activity

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Yang Lu ◽  
Shuang Rao ◽  
Fei Huang ◽  
Yixia Cai ◽  
Guoping Wang ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Soil Bacteria ◽  
Soil Fungi ◽  
Peanut Shell ◽  
Soilborne Disease ◽  
Soil Microbial ◽  
Soil Microbial Population ◽  
Tomato Bacterial Wilt

Bacterial wilt is a serious soilborne disease of Solanaceae crops which is caused byRalstonia solanacearum. The important role of biochar in enhancing disease resistance in plants has been verified; however, the underlying mechanism remains not fully understood. In this study, two different biochars, made from peanut shell (BC1) and wheat straw (BC2), were added toRalstonia solanacearum-infected soil to explore the interrelation among biochar, tomato bacterial wilt, and soil microbial properties. The results showed that both BC1 and BC2 treatments significantly reduced the disease index of bacterial wilt by 28.6% and 65.7%, respectively. The populations ofR. solanacearumin soil were also significantly decreased by biochar application.Ralstonia solanacearuminfection significantly reduced the densities of soil bacteria and actinomycetes and increased the ratio of soil fungi/bacteria in the soil. By contrast, BC1 and BC2 addition to pathogen-infected soil significantly increased the densities of soil bacteria and actinomycetes but decreased the density of fungi and the ratios of soil fungi/bacteria and fungi/actinomycetes. Biochar treatments also increased soil neutral phosphatase and urease activity. Furthermore, higher metabolic capabilities of microorganisms by biochar application were found at 96 and 144 h in Biolog EcoPlates. These results suggest that both peanut and wheat biochar amendments were effective in inhibiting tomato bacterial wilt caused byR. solanacearum. The results suggest a relationship between the disease resistance of the plants and the changes in soil microbial population densities and activity.

Effectiveness of Egyptian propolis on control of tomato bacterial wilt caused by Ralstonia solanacearum

2017 ◽  
Vol 124 (5) ◽  
pp. 467-472 ◽  
Author(s):  
Kamal A. M. Abo-Elyousr ◽  
Mohamed E. A. Seleim ◽  
Rafeek M. El-Sharkawy ◽  
Hadel M. M. Khalil Bagy
Keyword(s):  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Tomato Bacterial Wilt

scholarly journals Evaluation of biological efficacy of Trichoderma asperellum against tomato bacterial wilt caused by Ralstonia solanacearum

2018 ◽  
Vol 28 (1) ◽  
Author(s):  
Narasimhamurthy Konappa ◽  
Soumya Krishnamurthy ◽  
Chandra Nayaka Siddaiah ◽  
Niranjana Siddapura Ramachandrappa ◽  
Srinivas Chowdappa
Keyword(s):  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Trichoderma Asperellum ◽  
Biological Efficacy ◽  
Tomato Bacterial Wilt

Distribution and incidence of tomato bacterial wilt caused by Ralstonia solanacearum in the central region of Togo

2021 ◽  
Author(s):  
Bitang Bamazi ◽  
Agnassim Banito ◽  
K. D. Ayisah ◽  
Rachidatou Sikirou ◽  
Mathews Paret ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Laboratory Investigation ◽  
Central Region ◽  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Yield Losses ◽  
Tomato Production ◽  
Solanum Lycopersicum L ◽  
Survey Results ◽  
Tomato Bacterial Wilt

Tomato (Solanum lycopersicum L.) is one of the most important vegetables in Togo. Unfortunately, tomatoes are susceptible to many diseases, among which bacterial wilt caused by Ralstonia solanacearum causes major yield losses. In this study, incidence of bacterial wilt and its distribution was evaluated in the central region of Togo, the major tomato producing area in the country. Overall, 16 localities were surveyed in four prefectures. In each locality, three fields were visited, and the incidence of the disease was recorded, and diseased samples were collected for laboratory investigation. The results showed that bacterial wilt occurred in all the fields visited, indicating a field incidence of 100%, whereas the plant incidence ranged from 10.00±00% to 43.33±3.33%, with an average of 20.94±1.77%. The antibody based Immunostrip test was positive for R. solanacearum in 100% of the visited fields. From 144 samples collected from fields, 45 R. solanacearum isolates were isolated on Modified SMSA media. This survey results show that tomato bacterial wilt is a real threat to tomato production in the central region of Togo.

scholarly journals Effect of Allium fistulosum Extract on Ralstonia solanacearum Populations and Tomato Bacterial Wilt

Plant Disease ◽  
2012 ◽  
Vol 96 (5) ◽  
pp. 687-692 ◽  
Author(s):  
Péninna Deberdt ◽  
Benjamin Perrin ◽  
Régine Coranson-Beaudu ◽  
Pierre-François Duyck ◽  
Emmanuel Wicker
Keyword(s):  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Management Strategies ◽  
Antimicrobial Effect ◽  
Allium Fistulosum ◽  
Inhibition Assay ◽  
In Vivo Experiments ◽  
Tomato Bacterial Wilt

To control bacterial wilt (Ralstonia solanacearum, phylotype IIB/4NPB), the antimicrobial effect of Allium fistulosum aqueous extract was assessed as a preplant soil treatment. Three concentrations of extract (100, 50, and 25%, 1:1 [wt/vol]) were evaluated by in vitro inhibition assay and in vivo experiments in a growth chamber. In vitro, A. fistulosum (100 and 50%) suppressed growth of R. solanacearum. Preplant treatment of the soil with A. fistulosum extract significantly reduced the R. solanacearum populations. No pathogen was detected in the soil after treatment with 100% concentrated extract from the third day after application until the end of the experiment. A. fistulosum also significantly reduced the incidence of tomato bacterial wilt. In the untreated control, the disease affected 61% of the plants whereas, with 100 and 50% extracts, only 6 and 14% of the plants, respectively, were affected. These results suggest that A. fistulosum extracts could be used in biocontrol-based management strategies for bacterial wilt of tomato.

scholarly journals Combined use of a microbial restoration substrate and avirulent Ralstonia solanacearum for the control of tomato bacterial wilt

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Xuefang Zheng ◽  
Yujing Zhu ◽  
Jieping Wang ◽  
Ziran Wang ◽  
Bo Liu
Keyword(s):  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Combined Treatment ◽  
Control Measures ◽  
Effective Control ◽  
Control Effect ◽  
Tomato Production ◽  
Combined Use ◽  
Promote Plant Growth ◽  
Tomato Bacterial Wilt

AbstractTomato bacterial wilt (BW) caused by Ralstonia solanacearum seriously restricts tomato production and no effective control measures are available. A microbial restoration substrate (MRS) had been proved to be effective control of tomato BW in a greenhouse cultivation. In this study, MRS was combined with an avirulent Ralstonia solanacearum (aRS) strain to control the disease under an open field condition. In the two consecutive year (2017 and 2018) trials, the combined use of aRS and MRS resulted in better disease control compared with either aRS or MRS alone. Moreover, the combined treatment was more effective than expected and suggesting a synergistic control effect. Compared with control (CK, non-aRS or MRS), the application of aRS and MRS treatments alone or in combination could all promote plant growth, increase root activity and yield (e.g. the yield for the treatment of aRS + MRS increased by 463.64% in 2017). Soil nutrients, including soil organic carbon, total nitrogen, total phosphorus and total potassium contents were also significantly increased by the application of aRS and MRS treatments alone or in combination (P < 0.05). The application of MRS or in combination with aRS changed the soil from acidic to neutral, which is one of the key factors for controlling BW. The soil enzymatic activities were notably influenced by the combined use of aRS and MRS, which increased urease (87.37% in 2017 and 60.89% in 2018), catalase (93.67% in 2017 and 279.37% in 2018) and alkaline phosphatase activities (193.77% in 2017 and 455.73% in 2018). These results suggest that the combination of MRS and aRS could effectively control tomato BW and thus represents a promising new tool to control this disease.

scholarly journals Unravelling physiological signatures of tomato bacterial wilt and xylem metabolites exploited by Ralstonia solanacearum

2021 ◽  
Author(s):  
Léo Gerlin ◽  
Antoine Escourrou ◽  
Cédric Cassan ◽  
Felicià Maviane Macia ◽  
Nemo Peeters ◽  
...  
Keyword(s):  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Tomato Bacterial Wilt
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