scholarly journals A Novel Rhizospheric Bacterium: Bacillus velezensis NKMV-3 as a Biocontrol Agent Against Alternaria Leaf Blight in Tomato

2021 ◽  
Author(s):  
Murthy Vignesh ◽  
Shankar Ramakrishanan Madhan Shankar ◽  
Davoodbasha MubarakAli ◽  
Bodethala Narayanan Vedha Hari
Keyword(s):  
Biocontrol Agent ◽  
Leaf Blight ◽  
Bacillus Velezensis ◽  
Alternaria Leaf Blight ◽  
Bacterium Bacillus

scholarly journals Draft Genome Sequence of an Endophytic Biocontrol Bacterium, Bacillus velezensis PG12, Isolated from Apple Fruit

2019 ◽  
Vol 8 (41) ◽  
Author(s):  
Qingchao Zeng ◽  
Jianbo Xie ◽  
Yan Li ◽  
Xinyi Chen ◽  
Qi Wang
Keyword(s):  
Genome Sequence ◽  
Biocontrol Agent ◽  
Draft Genome ◽  
Pathogenic Fungi ◽  
Endophytic Bacterium ◽  
Apple Fruit ◽  
Draft Genome Sequence ◽  
Bacillus Velezensis ◽  
Content Type ◽  
Bacterium Bacillus

Bacillus velezensis PG12 is a biocontrol endophytic bacterium that is capable of inhibition of a broad range of plant-pathogenic fungi. The strain has the potential to be developed into a biocontrol agent for use in agriculture. Here, we report the draft genome sequence of B. velezensis PG12, which contains 22 scaffolds (3,990,845 bp), 3,884 coding sequences (CDSs), and an average G+C content of 46.45%.

scholarly journals Redroot pigweed as a host for Alternaria alternata – the causal agent of Alternaria leaf blight in potato

2015 ◽  
Vol 102 (1) ◽  
pp. 115-118 ◽  
Author(s):  
Stanisław Mazur ◽  
Halina Kurzawińska ◽  
Małgorzata Nadziakiewicz ◽  
Jacek Nawrocki
Keyword(s):  
Alternaria Alternata ◽  
Leaf Blight ◽  
Causal Agent ◽  
Redroot Pigweed ◽  
Alternaria Leaf Blight

scholarly journals Efficacy of the bacterium Bacillus licheniformis B307 as a biocontrol agent against tomato gray mold caused by Botrytis cinereal

2019 ◽  
Vol 37 (4) ◽  
pp. 327-334
Author(s):  
Yassir Akeed ◽  
◽  
Faiza Atrash ◽  
Walid Naffaa ◽  
◽  
...  
Keyword(s):  
Bacillus Licheniformis ◽  
Biocontrol Agent ◽  
Gray Mold ◽  
Bacterium Bacillus

scholarly journals Influence of weather parameters on alternaria leaf blight severity of makhana under the agro-climate of Koshi region of Bihar

2021 ◽  
Vol 23 (1) ◽  
pp. 54-59
Author(s):  
SANTOSH KUMAR ◽  
MD. NADEEM AKHTAR ◽  
SANTOSH KUMAR ◽  
MAHESH KUMAR ◽  
TRIBHUWAN KUMAR
Keyword(s):  
High Temperature ◽  
Relative Humidity ◽  
Disease Severity ◽  
Infection Process ◽  
Leaf Blight ◽  
Alternaria Leaf Blight ◽  
Weather Parameters ◽  
Maximum Temperatures ◽  
Blight Disease ◽  
Cent Disease

Weather parameters play a pivotal role in the infection process and spread of pathogen. It also influences the expression of susceptibility/resistance of the host plant during post-infection phases. Therefore, an experiment was conducted for two consecutive cropping seasons (2018 &2019) to study the influence of weather parameters such as temperature, humidity, rainfall and wind direction on the emergence of alternaria leaf blight of makhana in Koshi region of Bihar. Maximum per cent disease severity of alternarialeaf blightwas observed during the peak monsoon months (June to August). Highest disease severity of leaf blight (14.80% & 15.7%) was observed in the mid June during crop season, 2018 and 2019. High temperature (36.9oC & 38.1oC), and relative humidity (94% & 96.4%) of both the year 2018 and 2019 were found correlated with higher severity to alternaria leaf blight. Similarly average HTR values (3.1) were also found correlated with the average high temperature and relative humidity of both years (2018 and 2019) in terms of severity of leaf blight disease. Maximum temperatures, relative humidity and rainfall exhibited strong positive linear relationship and influenced the occurrence of alternaria leaf blight disease significantly. We also developed a geo-phytopathological model for the prediction of alternaria leaf blight disease of makhana on the basis of congenial mean temperature and relative humidity.

scholarly journals Complete genome sequence of Bacillus velezensis QST713: A biocontrol agent that protects Agaricus bisporus crops against the green mould disease

2018 ◽  
Vol 278 ◽  
pp. 10-19 ◽  
Author(s):  
Caroline Pandin ◽  
Dominique Le Coq ◽  
Julien Deschamps ◽  
Régis Védie ◽  
Thierry Rousseau ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Complete Genome ◽  
Agaricus Bisporus ◽  
Biocontrol Agent ◽  
Bacillus Velezensis ◽  
Green Mould

scholarly journals Pepper Bacterial Spot Control by Bacillus velezensis: Bioprocess Solution

2020 ◽  
Vol 8 (10) ◽  
pp. 1463
Author(s):  
Ivana Pajčin ◽  
Vanja Vlajkov ◽  
Marcus Frohme ◽  
Sergii Grebinyk ◽  
Mila Grahovac ◽  
...  
Keyword(s):  
Biocontrol Agent ◽  
Plant Protection ◽  
Medium Composition ◽  
Plant Diseases ◽  
Mass Spectrometry Analysis ◽  
Economic Losses ◽  
In Planta ◽  
Bacterial Spot ◽  
Bacillus Velezensis ◽  
Food Isolate

Pepper bacterial spot is one of the most severe plant diseases in terms of infection persistence and economic losses when it comes to fresh pepper fruits used in nutrition and industrial processing. In this study, Bacillus velezensis IP22 isolated from fresh cheese was used as a biocontrol agent of pepper bacterial spot, whose main causal agent is the cosmopolitan pathogen Xanthomonas euvesicatoria. After optimization of the cultivation medium composition aimed at maximizing of the antimicrobial activity against X. euvesicatoria and validation of the optimized medium at the scale of a laboratory bioreactor, in planta tests were performed. The results have showed significant suppression of bacterial spot symptoms in pepper plants by the produced biocontrol agent, as well as reduction of disease spreading on the healthy (uninoculated) pepper leaves. Furthermore, HPLC-MS (high pressure liquid chromatography–mass spectrometry) analysis was employed to examine antimicrobial metabolites produced by B. velezensis IP22, where lipopeptides were found with similar m/z values compared to lipopeptides from fengycin and locillomycin families. The bioprocess solution developed at the laboratory scale investigated in this study represents a promising strategy for production of pepper bacterial spot biocontrol agent based on B. velezensis IP22, a food isolate with a great perspective for application in plant protection.

scholarly journals Genome Sequence of Lipopeptide- and Antioxidant-Producing Strain Bacillus velezensis NWUMFkBS10.5

2019 ◽  
Vol 8 (28) ◽  
Author(s):  
Adetomiwa A. Adeniji ◽  
Olubukola O. Babalola
Keyword(s):  
Genome Sequence ◽  
In Silico ◽  
Metabolic Pathways ◽  
Biocontrol Agent ◽  
Bacillus Velezensis ◽  
Content Type ◽  
Genome Profiling ◽  
Antimicrobial Lipopeptides

Candidate biocontrol agent Bacillus velezensis NWUMFkBS10.5 possesses unique genomic characteristics revealed by antiSMASH analysis and in vitro metabolomic elucidation. Besides its capability to produce antimicrobial lipopeptides, further in silico genome profiling predicted the presence of metabolic pathways for synthesizing antioxidants like lampranthin-2, miraxanthin V, and 2-decarboxybetanidin.

scholarly journals Management of Alternaria leaf blight in tomato plants by mentha essential oil

2020 ◽  
Vol 56 (No. 3) ◽  
pp. 191-196
Author(s):  
Kahkashan Perveen ◽  
Najat A. Bokhari
Keyword(s):  
Antifungal Activity ◽  
Essential Oil ◽  
Mycelial Growth ◽  
Leaf Blight ◽  
In Vitro Test ◽  
Tomato Plants ◽  
Conidia Germination ◽  
Alternaria Leaf Blight

The essential oil obtained by the hydro-distillation of the leaves of Mentha arvensis Linnaeus was evaluated for its antifungal activity against the causal agent of the Alternaria blight of tomatoes, i.e., Alternaria alternata (Fries) Keissler. The antifungal activity of the mentha essential oil was assessed both in vitro and in vivo. The chemical composition of the mentha oil was also identified by GCMS analysis. The in vitro test revealed that the maximum inhibition in the mycelial growth (93.6%) and conidia germination (90.6%) was at the highest concentration (40 µL/mL), furthermore, it was found that the inhibition of the mycelial growth and conidia germination was dose dependent. The in vivo test proved that the application of the mentha essential oil (40 µL/mL) significantly increased the plant height (84.6%), fresh weight (81.5%) and dry weight (80.0%) when compared to the untreated tomato plants. The disease incidence was 3.5 in the untreated plants, while it was 0.93 for the mentha essential oil treated plants and was 0.08 in the carbendazim treated plants. The GC-MS analysis of the mentha essential oil identified 18 compounds in total, among which the percentage of menthol was the highest (69.2%). The mentha essential oil was successful in managing the Alternaria leaf blight in the tomato plants. Therefore, it can be explored further for the development of a natural fungicide.

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