scholarly journals PROSPECTS FOR MICROBIAL ANTAGONISTS USE IN PROTECTION OF AGROECOSYSTEMS FROM PHYTOPATHOGENES

2011 ◽  
Vol 13 ◽  
pp. 23-41
Author(s):  
I.K. Kurdish
Keyword(s):  
Plant Diseases ◽  
Phytopathogenic Bacteria ◽  
Bacteria And Fungi

Thepapercoverstheanalysisoftherelationshipofmicroorganisms – antagonists and pathogens in agroecosystems which is an important factor of plant diseases prevalence control. Among the studied microorganisms the most important antagonist of phytopathogenic bacteria and fungi in agricoenosis were the representatives of the genera Pseudomonas, Bacillus, Trichoderma, Chaetomium and some other microorganisms. Several studied strains-antagonists were selected as the basis or as the perspective ones for the production of microbial preparations for pathogens control in agroecosystems and improvement of plants productivity.

scholarly journals Essential oils and plant extracts in the control of phytopathogenic bacteria and fungi

Biljni lekar ◽  
2021 ◽  
Vol 49 (2) ◽  
pp. 178-187
Author(s):  
Nikola Laćarac
Keyword(s):  
Essential Oils ◽  
Plant Extracts ◽  
Phytopathogenic Fungi ◽  
Organic Production ◽  
Plant Diseases ◽  
Botanical Pesticides ◽  
Phytopathogenic Bacteria ◽  
The Past ◽  
Production Concept ◽  
Bacteria And Fungi

Some plants contain various substances that have pesticidal properties. Since these substances are extracted from plants they are called botanical pesticides. Botanical pesticides can be used as fungicides, bactericides, viricides, herbicides, insecticides, nematicides and rodenticides. Essential oils and plant extracts are most commonly used as botanical pesticides. In the past few years, we have witnessed a tendency to reduce the use of conventional pesticides and for that reason more and more attention is paid to the testing and application of essential oils and plant extracts for this purpose. These compounds have a number of advantages over conventional pesticides, especially when it comes to preventing the occurrence of diseases caused by phytopathogenic bacteria and phytopathogenic fungi as the most common and most important causes of plant diseases. Plant extracts and essential oils can be used at a time when the application of conventional pesticides is impossible due to the observance of the waiting period, and they are also a significant weapon in integrated and organic production concept.

Antagonism against phytopathogenic bacteria and fungi and phytoregulating activity of streptomycetes of chernozems Moldova

2019 ◽  
Vol 326 (1) ◽  
pp. 131-136
Author(s):  
S.A. Burtseva ◽  
◽  
M.N. Byrsa ◽  
S.N. Maslobrod ◽  
◽  
...  
Keyword(s):  
Phytopathogenic Bacteria ◽  
Bacteria And Fungi

scholarly journals Size and Shape-Dependent Antimicrobial Activities of Silver and Gold Nanoparticles: A Model Study as Potential Fungicides

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2682 ◽  
Author(s):  
Francis J. Osonga ◽  
Ali Akgul ◽  
Idris Yazgan ◽  
Ayfer Akgul ◽  
Gaddi B. Eshun ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Pathogenic Fungi ◽  
Antimicrobial Activities ◽  
Plant Diseases ◽  
Production Plant ◽  
Silver And Gold Nanoparticles ◽  
Size And Shape ◽  
Model Study ◽  
Pathogenic Microbes ◽  
Bacteria And Fungi

Plant-based pathogenic microbes hinder the yield and quality of food production. Plant diseases have caused an increase in food costs due to crop destruction. There is a need to develop novel methods that can target and mitigate pathogenic microbes. This study focuses on investigating the effects of luteolin tetraphosphate derived silver nanoparticles (LTP-AgNPs) and gold nanoparticles (LTP-AuNPs) as a therapeutic agent on the growth and expression of plant-based bacteria and fungi. In this study, the silver and gold nanoparticles were synthesized at room temperature using luteolin tetraphosphate (LTP) as the reducing and capping agents. The synthesis of LTP-AgNPs and LTP-AuNP was characterized by Transmission Electron Microscopy (TEM) and size distribution. The TEM images of both LTP-AgNPs and LTP-AuNPs showed different sizes and shapes (spherical, quasi-spherical, and cuboidal). The antimicrobial test was conducted using fungi: Aspergillus nidulans, Trichaptum biforme, Penicillium italicum, Fusarium oxysporum, and Colletotrichum gloeosporioides, while the class of bacteria employed include Pseudomonas aeruginosa, Aeromonas hydrophila, Escherichia coli, and Citrobacter freundii as Gram (−) bacteria, and Listeria monocytogenes and Staphylococcus epidermidis as Gram (+) bacterium. The antifungal study demonstrated the selective size and shape-dependent capabilities in which smaller sized spherical (9 nm) and quasi-spherical (21 nm) AgNPs exhibited 100% inhibition of the tested fungi and bacteria. The LTP-AgNPs exhibited a higher antimicrobial activity than LTP-AuNPs. We have demonstrated that smaller sized AgNPs showed excellent inhibition of A. nidulans growth compared to the larger size nanoparticles. These results suggest that LTP-AuNP and LTP-AgNPs could be used to address the detection and remediation of pathogenic fungi, respectively.

scholarly journals Antimicrobial activity of Paenibacillus peoriae strain NRRL BD-62 against a broad spectrum of phytopathogenic bacteria and fungi

2003 ◽  
Vol 95 (5) ◽  
pp. 1143-1151 ◽  
Author(s):  
I. Weid ◽  
D.S. Alviano ◽  
A.L.S. Santos ◽  
R.M.A. Soares ◽  
C.S. Alviano ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Broad Spectrum ◽  
Phytopathogenic Bacteria ◽  
Bacteria And Fungi

scholarly journals Chemical composition and antibacterial activity of essential oils of two species of Lamiaceae against phytopathogenic bacteria

2015 ◽  
Vol 64 (2) ◽  
pp. 121-127 ◽  
Author(s):  
ARZU GORMEZ ◽  
SEDAT BOZARI ◽  
DERYA YANMIS ◽  
MEDİNE GULLUCE ◽  
FİKRETTİN SAHIN ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Control Plant ◽  
Antibacterial Properties ◽  
Antibacterial Activities ◽  
Plant Diseases ◽  
Phytopathogenic Bacteria ◽  
Dilution Assay ◽  
Diffusion Assay

In this study, we aimed to determine chemical composition and antibacterial activities of Satureja hortensis and Calamintha nepeta against to 20 phytopathogenic bacteria causing serious crop loss. The essential oils of S. hortensis and C. nepeta were isolated by the hydrodistillation method and the chemical composition of the essential oils were analyzed by GC-MS. The antibacterial properties of the essential oils were evaluated against 20 phytopathogenic bacteria through Disc diffusion assay and micro dilution assay. The results revealed that the essential oils of S. hortensis and C. nepeta have significant antibacterial activity. Furthermore, the findings of the study are valuable for future investigations focusing on the alternative natural compounds to control plant diseases.

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