Biological control of Fusarium tomato-wilt disease by cyanobacteria Nostoc spp.

2022 ◽  
Vol 204 (1) ◽  
Author(s):  
Mostafa M. El-Sheekh ◽  
Mohamed A. Deyab ◽  
Reham S. A. Hasan ◽  
Seham E. Abu Ahmed ◽  
Abdelgawad Y. Elsadany
Keyword(s):  
Biological Control ◽  
Wilt Disease ◽  
Tomato Wilt

Pengembangan Teknologi Pengendalian Penyakit Layu Tomat (Fusarium oxysporum f. sp. lycopersici) yang Ramah Lingkungan dengan Menggunakan Mikroorganisme Saprofit

Agrotek ◽  
2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Derek Kornelis Erari ◽  
Eko Agus Martanto
Keyword(s):  
Biological Control ◽  
Fusarium Oxysporum ◽  
Growth And Development ◽  
Wilt Disease ◽  
Common Disease ◽  
Microbial Antagonism ◽  
The Earth ◽  
Tomato Wilt

Fusarium wilt disease is a common disease for tomatoes plant which damages plant although it is intensively cultivated. Biological control by microbial antagonism is environmentally friendly compare to the use of fungicide. This research was aimed to study the capability of Bacillus subtilis, Pseudomonas fluorescens, Gliocladium fimbriatum and Trichoderma viridae that are locally specific in controll Fusarium oxysporum f.sp. lycopersici� cause tomato wilt disease. Evaluation of F.o. f.sp. lycopersici� antagonism capability was done by in vitro and in vivo.� In vitro antagonism treatment used the ouble plating treatment on Potato Dextose Agar.� In vivo antagonism treatment was done by gave antagonism agent and F.o. f.sp. lycopersici� together to the earth medium. The result of the study revealed that (1) B. subtilis, G. fimbriatum and T. viridae can pressure the growth and development �F.o. f.sp. lycopersici which cause tomato wilt disease both in vitro and in vivo, (2) In vitro the average of the prevented pathogen growth was as follow: B. subtilis (55.52%), G. fimbriatum (36.77%) and� T. viridae (35.87%), (3) In vivo treatment by the earth medium was not significantly different, and (4) In vivo the ability of prevent disease intensity was as follow : B. subtilis (62.35%), G. fimbriatum (49.95%) and� T. viridae (49.95%).

scholarly journals An integrated analysis of mRNA and sRNA transcriptional profiles in tomato root: Insights on tomato wilt disease

PLoS ONE ◽  
2018 ◽  
Vol 13 (11) ◽  
pp. e0206765 ◽  
Author(s):  
Min Zhao ◽  
Hui-Min Ji ◽  
Ying Gao ◽  
Xin-Xin Cao ◽  
Hui-Ying Mao ◽  
...  
Keyword(s):  
Wilt Disease ◽  
Integrated Analysis ◽  
Tomato Root ◽  
Transcriptional Profiles ◽  
Tomato Wilt

scholarly journals Isolation and Identification of Tomato Wilt Pathogen Under Green House Conditions in Tripoli Area

2019 ◽  
pp. 327-337
Author(s):  
Khayriyah Misbah Dayab ◽  
Najat Khalifa ElGariani
Keyword(s):  
Wilt Disease ◽  
Agricultural Products ◽  
Vegetable Crops ◽  
Surrounding Area ◽  
Isolation And Identification ◽  
Tomato Crop ◽  
The Third ◽  
Tomato Roots ◽  
Solanaceae Family ◽  
Tomato Wilt

The tomato crop is Lycopersico esculentum L. of the Solanaceae family. The considered world's first among the vegetable crops in terms of cultivated area annually. It is the third most important agricultural products after wheat and barley and the second most important vegetable crops after potatoes in Libya. The study aimed to isolate and identify the cause of tomato wilt disease its under greenhouse conditions. Four Fusarium oxysporum isolates were obtained from tomato roots and surrounding area growing under protected agricultural conditions at Janzour and Ein Zara in Tripoli- libay. The fungus were more frequent at Ein Zara area (37%), compared with Janzour (22%).

scholarly journals Streptomyces sp.: Characterization, Identification and Its Potential as a Ralstonia solanacearum Biological Control Agent in vitro

2019 ◽  
Vol 2 (3) ◽  
pp. 89-96 ◽  
Author(s):  
Rachmad Saputra ◽  
Triwidodo Arwiyanto ◽  
Arif Wibowo
Keyword(s):  
Biological Control ◽  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Biological Control Agent ◽  
Wilt Disease ◽  
Molecular Characteristics ◽  
Streptomyces Sp ◽  
Bacterial Wilt Disease ◽  
Wide Range

Streptomyces sp. bacteria have the potential to produce antibiotic compounds, which are one of the mechanisms that are widely used in biological control. However, in general, biological control mechanisms also occur through competition, cell wall degradation and induced resistance. This study was aimed to determine the physiological, biochemical and molecular characteristics of two isolates of Streptomyces sp. (S-4 and S16 isolates) isolated from the tomatoes roots, and to find out their ability to control Ralstonia solanacearum, which causes bacterial wilt disease on a wide range of hosts. The results showed both Streptomyces sp. isolates had several different physiological and biochemical characteristics and had a different ability to inhibit R. solanacearum in vitro. Streptomyces sp. S-16 isolate had a high similarity with Streptomyces diastaticus subsp. ardesiacus strain NRRL B-1773T based on the molecular identification results. Further research needs to be done to see the potential inhibition of the two Streptomyces isolates in inhibiting the development of bacterial wilt disease in tomato plants caused by R. solanacearum.

Biological Control of Bacterial Wilt Disease

1992 ◽  
pp. 756-758
Author(s):  
Aoki Michiko ◽  
Uehara Kyoko ◽  
Tsuji Kazumasa ◽  
Iijima Masaharu ◽  
Ishizu Yoshiaki ◽  
...  
Keyword(s):  
Biological Control ◽  
Bacterial Wilt ◽  
Wilt Disease ◽  
Bacterial Wilt Disease

scholarly journals Biological control of Ralstonia solanacearum (Smith), the causal pathogen of bacterial wilt disease by using Pantoea spp

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Kamal A. M. Abo-Elyousr ◽  
Sabry A. Hassan
Keyword(s):  
Biological Control ◽  
Cell Suspension ◽  
Disease Severity ◽  
Culture Filtrate ◽  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Wilt Disease ◽  
Nucleotide Sequence Analysis ◽  
Tomato Root

Abstract Background Bacterial wilt of tomato (BWP) caused by Ralstonia solanacearum (Smith) is a very important disease. Biological control of this disease is a very important tool to protect the plant and environment from pollution of chemical control. Results Twenty isolates of genus, Pantoea were isolated from healthy tomato root. Out of 20 isolates, 2 strains, PHYTPO1 and PHYTPO2, showed highly antagonistic property to control the growth of R. solanacearum in vitro conditions. They were identified as P. agglomerans by using 16S rRNA nucleotide sequence analysis. The 2 isolates were selected to study their effect (as cell suspension or culture filtrate) on the bacterial wilt under greenhouse conditions. PHYTPO1 inhibited maximum growth reduction of R. solanacearum and formed 2.5 cm2 of inhibition zone, followed by 1.2 cm2 in PHYTOPO2 under in vitro conditions. Treating with both isolates of P. agglomerans was significantly reduced disease severity of tomato wilt disease. The disease severity was reduced to 74.1 when treated as cell suspension, while when treated as culture filtrate, it reduced the disease severity up to 69.4 than infected control. Conclusion The strains of Pantoea can be used as an ecofriendly method to control of the most economic pathogen of tomato under greenhouse conditions. Further study is needed to find an appropriate formulation and approving application of these bacteria under field conditions.

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