phlF− mutant of Pseudomonas fluorescens J2 improved 2,4-DAPG biosynthesis and biocontrol efficacy against tomato bacterial wilt

2014 ◽  
Vol 78 ◽  
pp. 1-8 ◽  
Author(s):  
Tian-Tian Zhou ◽  
Chun-Yu Li ◽  
Da Chen ◽  
Kai Wu ◽  
Qi-Rong Shen ◽  
...  
Keyword(s):  
Pseudomonas Fluorescens ◽  
Bacterial Wilt ◽  
Biocontrol Efficacy ◽  
Tomato Bacterial Wilt

scholarly journals The impact of Paenibacillus polymyxa HY96-2 luxS on biofilm formation and control of tomato bacterial wilt

2019 ◽  
Vol 103 (23-24) ◽  
pp. 9643-9657 ◽  
Author(s):  
Jincui Yi ◽  
Daojing Zhang ◽  
Yuejuan Cheng ◽  
Jingjing Tan ◽  
Yuanchan Luo
Keyword(s):  
Bacterial Wilt ◽  
Late Stage ◽  
Biofilm Formation ◽  
Early Stage ◽  
Regulatory Gene ◽  
Paenibacillus Polymyxa ◽  
Deletion Strain ◽  
Biocontrol Efficacy ◽  
The Impact ◽  
Tomato Bacterial Wilt

Abstract The focus of this study was to investigate the effects of luxS, a key regulatory gene of the autoinducer-2 (AI-2) quorum sensing (QS) system, on the biofilm formation and biocontrol efficacy against Ralstonia solanacearum by Paenibacillus polymyxa HY96-2. luxS mutants were constructed and assayed for biofilm formation of the wild-type (WT) strain and luxS mutants of P. polymyxa HY96-2 in vitro and in vivo. The results showed that luxS positively regulated the biofilm formation of HY96-2. Greenhouse experiments of tomato bacterial wilt found that from the early stage to late stage postinoculation, the biocontrol efficacy of the luxS deletion strain was the lowest with 50.70 ± 1.39% in the late stage. However, the luxS overexpression strain had the highest biocontrol efficacy with 75.66 ± 1.94% in the late stage. The complementation of luxS could restore the biocontrol efficacy of the luxS deletion strain with 69.84 ± 1.09% in the late stage, which was higher than that of the WT strain with 65.94 ± 2.73%. Therefore, we deduced that luxS could promote the biofilm formation of P. polymyxa HY96-2 and further promoted its biocontrol efficacy against R. solanacearum.

scholarly journals Synergistic effect of acetyl salicylic acid and DL-Beta-aminobutyric acid on biocontrol efficacy of Bacillus strains against tomato bacterial wilt

2013 ◽  
Vol 38 (2) ◽  
pp. 102-113 ◽  
Author(s):  
Abdulwareth Abdlkader Almoneafy ◽  
Mohammad Reza Ojaghian ◽  
Xu Seng-fu ◽  
Muhammad Ibrahim ◽  
Xie Guan-Lin ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Synergistic Effect ◽  
Bacterial Wilt ◽  
Aminobutyric Acid ◽  
Acetyl Salicylic Acid ◽  
Biocontrol Efficacy ◽  
Tomato Bacterial Wilt ◽  
Bacillus Strains

Nitric oxide-overproducing transformants of Pseudomonas fluorescens with enhanced biocontrol of tomato bacterial wilt

2005 ◽  
Vol 71 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Yanqing Wang ◽  
Qian Yang ◽  
Yukio Tosa ◽  
Hitoshi Nakayashiki ◽  
Shigeyuki Mayama
Keyword(s):  
Nitric Oxide ◽  
Pseudomonas Fluorescens ◽  
Bacterial Wilt ◽  
Tomato Bacterial Wilt

Involvement of gacA Gene in the Suppression of Tomato Bacterial Wilt by Pseudomonas fluorescens FPT9601

2001 ◽  
Vol 67 (2) ◽  
pp. 134-143 ◽  
Author(s):  
Liqun ZHANG ◽  
Qian YANG ◽  
Yukio TOSA ◽  
Hitoshi NAKAYASHIKI ◽  
Shigeyuki MAYAMA
Keyword(s):  
Pseudomonas Fluorescens ◽  
Bacterial Wilt ◽  
Tomato Bacterial Wilt

scholarly journals Kemampuan Campuran Bacillus sp., Pseudomonas fluorescens, dan Trichoderma sp. untuk Mengendalikan Penyakit Layu Bakteri pada Tanaman Tomat

2018 ◽  
Vol 14 (2) ◽  
pp. 63
Author(s):  
Abdul Manan ◽  
Endang Mugiastuti ◽  
Loekas Soesanto
Keyword(s):  
Plant Growth ◽  
Pseudomonas Fluorescens ◽  
Bacterial Wilt ◽  
Disease Incidence ◽  
Growth And Yield ◽  
Bacillus Sp ◽  
Tomato Production ◽  
Potential Control ◽  
Trichoderma Sp ◽  
Tomato Bacterial Wilt

Ability of Bacillus sp., Pseudomonas fluorescens, and Trichoderma sp. to Control Tomato Bacterial Wilt DiseaseRalstonia solanacearum is known as the causal agent of bacterial wilt on tomato.  The bacteria may infect all stadia of plant growth and decrease tomato production. Biological control using antagonistic microbes is considered as a potential control alternative for the disease. This research was aimed to assay the ability of combination treatment of Bacillus sp., Pseudomonas fluorescens, and Trichoderma sp. in controlling R. solanacearum and its effect on growth and yield of tomato in the field. The treatments consisted of control (without antagonistic microbes), mixed combination of Bacillus sp. B8 + Bacillus sp. B11 + Trichoderma sp.; Bacillus sp. B8 + Pseudomonas flourescens P8 + Trichoderma sp.; and Streptomisin sulfat 20%. Antagonistic microbes was applied at planting time, as much as 100 mL per plant. The result showed that mixed combination of Bacillus sp. B8 + Bacillus sp. B11 + Trichoderma sp. was the best treatment in controlling the disease as indicated by delaying incubation period up to 6.2 days, decreasing disease incidence up to 12.3%, increasing plant growth up to 42.80%, and increasing yield up to 14.99%.

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