scholarly journals Evaluating the efficacy of a soil disinfection treatment for deep soil depth using dazomet combined with flooding against tomato bacterial wilt

2020 ◽  
Vol 62 (0) ◽  
pp. 79-84
Author(s):  
Yasunori Muramoto ◽  
Kazutomo Sakaguchi ◽  
Wataru Toriumi ◽  
Mitsuya Mino ◽  
Shigenobu Yoshida
Keyword(s):  
Bacterial Wilt ◽  
Soil Depth ◽  
Deep Soil ◽  
Soil Disinfection ◽  
Tomato Bacterial Wilt

scholarly journals Control of tomato bacterial wilt using resistant rootstocks with soil disinfection treatments

2021 ◽  
Vol 63 (0) ◽  
pp. 103-107
Author(s):  
Taku Kawakami ◽  
Kaori Nakajima ◽  
Shigenobu Yoshida
Keyword(s):  
Bacterial Wilt ◽  
Soil Disinfection ◽  
Tomato Bacterial Wilt

scholarly journals Comparison of Drivers of Soil Microbial Communities Developed in Karst Ecosystems with Shallow and Deep Soil Depths

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 173
Author(s):  
Huiling Guan ◽  
Jiangwen Fan ◽  
Haiyan Zhang ◽  
Warwick Harris
Keyword(s):  
Microbial Community ◽  
Microbial Communities ◽  
Soil Depth ◽  
Phospholipid Fatty Acid ◽  
Soil Microbial Communities ◽  
Deep Soil ◽  
Soil System ◽  
Soil Microbial ◽  
Total Soil ◽  
Karst Ecosystems

Soil erosion is prevalent in karst areas, but few studies have compared the differences in the drivers for soil microbial communities among karst ecosystems with different soil depths, and most studies have focused on the local scale. To fill this research gap, we investigated the upper 20 cm soil layers of 10 shallow–soil depth (shallow–SDC, total soil depth less than 100 cm) and 11 deep–soil depth communities (deep–SDC, total soil depth more than 100 cm), covering a broad range of vegetation types, soils, and climates. The microbial community characteristics of both the shallow–SDC and deep–SDC soils were tested by phospholipid fatty acid (PLFAs) analysis, and the key drivers of the microbial communities were illustrated by forward selection and variance partitioning analysis. Our findings demonstrated that more abundant soil nutrients supported higher fungal PLFA in shallow–SDC than in deep–SDC (p < 0.05). Furthermore, stronger correlation between the microbial community and the plant–soil system was found in shallow–SDC: the pure plant effect explained the 43.2% of variance in microbial biomass and 57.8% of the variance in the ratio of Gram–positive bacteria to Gram–negative bacteria (G+/G−), and the ratio of fungi to total bacteria (F/B); the pure soil effect accounted for 68.6% variance in the microbial diversity. The ratio of microbial PLFA cyclopropyl to precursors (Cy/Pr) and the ratio of saturated PLFA to monounsaturated PLFA (S/M) as indicators of microbial stress were controlled by pH, but high pH was not conducive to microorganisms in this area. Meanwhile, Cy/Pr in all communities was >0.1, indicating that microorganisms were under environmental stress. Therefore, the further ecological restoration of degraded karst communities is needed to improve their microbial communities.

Mixtures of Suppressive Bacteria Enhance Biological Control of Tomato Bacterial Wilt

2021 ◽  
Author(s):  
Xiaoyan Yu ◽  
Xue Zhang ◽  
Jing Zhang ◽  
Lida Zhang ◽  
Yanjie Jiao ◽  
...  
Keyword(s):  
Biological Control ◽  
Bacterial Wilt ◽  
Tomato Bacterial Wilt

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

scholarly journals Streptomyces sp. JCK-6131 Protects Plants Against Bacterial and Fungal Diseases via Two Mechanisms

2021 ◽  
Vol 12 ◽  
Author(s):  
Khanh Duy Le ◽  
Jeun Kim ◽  
Hoa Thi Nguyen ◽  
Nan Hee Yu ◽  
Ae Ran Park ◽  
...  
Keyword(s):  
Bacterial Wilt ◽  
Foliar Application ◽  
Antagonistic Activity ◽  
Fungal Diseases ◽  
Dependent Manner ◽  
Minimum Concentration ◽  
Bacteria And Fungi ◽  
Tomato Bacterial Wilt

Plant bacterial and fungal diseases cause significant agricultural losses and need to be controlled. Beneficial bacteria are promising candidates for controlling these diseases. In this study, Streptomyces sp. JCK-6131 exhibited broad-spectrum antagonistic activity against various phytopathogenic bacteria and fungi. In vitro assays showed that the fermentation filtrate of JCK-6131 inhibited the growth of bacteria and fungi with minimum concentration inhibitory (MIC) values of 0.31–10% and 0.31–1.25%, respectively. In the in vivo experiments, treatment with JCK-6131 effectively suppressed the development of apple fire blight, tomato bacterial wilt, and cucumber Fusarium wilt in a dose-dependent manner. RP-HPLC and ESI-MS/MS analyses indicated that JCK-6131 can produce several antimicrobial compounds, three of which were identified as streptothricin E acid, streptothricin D, and 12-carbamoyl streptothricin D. In addition, the disease control efficacy of the foliar application of JCK-6131 against tomato bacterial wilt was similar to that of the soil drench application, indicating that JCK-6131 could enhance defense resistance in plants. Molecular studies on tomato plants showed that JCK-6131 treatment induced the expression of the pathogenesis-related (PR) genes PR1, PR3, PR5, and PR12, suggesting the simultaneous activation of the salicylate (SA) and jasmonate (JA) signaling pathways. The transcription levels of PR genes increased earlier and were higher in treated plants than in untreated plants following Ralstonia solanacearum infection. These results indicate that Streptomyces sp. JCK-6131 can effectively control various plant bacterial and fungal diseases via two distinct mechanisms of antibiosis and induced resistance.

scholarly journals Mechanism of Tomato Bacterial Wilt Suppression in Soil Amended with Lysine

2010 ◽  
Vol 25 (2) ◽  
pp. 83-94 ◽  
Author(s):  
Marylene Bagarinao Posas ◽  
Koki Toyota
Keyword(s):  
Bacterial Wilt ◽  
Tomato Bacterial Wilt

THE EFFECTIVENESS OF PROTECTIVE MEASURES AGAINST TOMATO BACTERIAL WILT IN PROTECTED SOIL CONDITIONS

2021 ◽  
Author(s):  
E. S. Ivanova ◽  
◽  
I. S. Barashkova
Keyword(s):  
Growth Rate ◽  
Crop Yield ◽  
Bacterial Wilt ◽  
Biological Agents ◽  
Soil Conditions ◽  
Disease Manifestation ◽  
Protective Measures ◽  
Production Experience ◽  
Tomato Bacterial Wilt

The article presents the results of production experience on evaluating the effectiveness of chemical and biological protective measures against tomato bacterial wilt in protected soil. During the research, the influence of biological agents and pesticides on the diseased plants growth rate in greenhouses, the disease manifestation intensity, and crop yield was revealed.

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.

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