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 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 RESISTANCE ASSESSMENT OF TOMATO (SOLANUM LYCOPERSICUM L.) AND GBOMA (SOLANUM MACROCARPON L.) CULTIVARS AGAINST BACTERIAL WILT CAUSED BY RALSTONIA SOLANACEARUM IN BENIN

2020 ◽  
Vol 32 (2) ◽  
Author(s):  
Ghislain F.G.N. Oussou ◽  
Rachidatou Sikirou ◽  
Sètondji A. P. E. Afoha ◽  
Marie E. E. A. Dossoumou ◽  
Sharif A. Boukari ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Solanum Lycopersicum L ◽  
Resistance Assessment

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

Genetics of tolerance to bacterial wilt disease in tomato (Solanum lycopersicum L.)

2018 ◽  
Vol 47 (6) ◽  
pp. 591-600
Author(s):  
Brati Acharya ◽  
Ankit Kumar Ghorai ◽  
Subhramalya Dutta ◽  
Praveen Kumar Maurya ◽  
Subrata Dutta ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Bacterial Wilt ◽  
Wilt Disease ◽  
Bacterial Wilt Disease ◽  
Solanum Lycopersicum L

scholarly journals Metabolomic Evaluation of Ralstonia solanacearum Cold Shock Protein Peptide (csp22)-Induced Responses in Solanum lycopersicum

2022 ◽  
Vol 12 ◽  
Author(s):  
Dylan R. Zeiss ◽  
Paul A. Steenkamp ◽  
Lizelle A. Piater ◽  
Ian A. Dubery
Keyword(s):  
Solanum Lycopersicum ◽  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Plant Pathogens ◽  
Cold Shock ◽  
Phenylpropanoid Pathway ◽  
Infection Process ◽  
Cold Shock Protein ◽  
Pre Treatment ◽  
Molecular Patterns

Ralstonia solanacearum, the causal agent of bacterial wilt, is one of the most destructive bacterial plant pathogens. This is linked to its evolutionary adaptation to evade host surveillance during the infection process since many of the pathogen’s associated molecular patterns escape recognition. However, a 22-amino acid sequence of R. solanacearum-derived cold shock protein (csp22) was discovered to elicit an immune response in the Solanaceae. Using untargeted metabolomics, the effects of csp22-elicitation on the metabolome of Solanum lycopersicum leaves were investigated. Additionally, the study set out to discover trends that may suggest that csp22 inoculation bestows enhanced resistance on tomato against bacterial wilt. Results revealed the redirection of metabolism toward the phenylpropanoid pathway and sub-branches thereof. Compared to the host response with live bacteria, csp22 induced a subset of the discriminant metabolites, but also metabolites not induced in response to R. solanacearum. Here, a spectrum of hydroxycinnamic acids (especially ferulic acid), their conjugates and derivatives predominated as signatory biomarkers. From a metabolomics perspective, the results support claims that csp22 pre-treatment of tomato plants elicits increased resistance to R. solanacearum infection and contribute to knowledge on plant immune systems operation at an integrative level. The functional significance of these specialized compounds may thus support a heightened state of defense that can be applied to ward off attacking pathogens or toward priming of defense against future infections.

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