Studies on biological control of an invasive alien weed using plant pathogenic fungi

2016 ◽  
Vol 82 (6) ◽  
pp. 338-339
Author(s):  
Daisuke Kurose
Keyword(s):  
Biological Control ◽  
Pathogenic Fungi ◽  
Plant Pathogenic Fungi ◽  
Alien Weed ◽  
Invasive Alien Weed

scholarly journals Draft Genome Sequence of the Mycoparasitic Oomycete Pythium periplocum Strain CBS 532.74

2017 ◽  
Vol 5 (12) ◽  
Author(s):  
Sandeep K. Kushwaha ◽  
Ramesh R. Vetukuri ◽  
Laura J. Grenville-Briggs
Keyword(s):  
Biological Control ◽  
Genome Sequence ◽  
Biological Control Agent ◽  
Draft Genome ◽  
Pathogenic Fungi ◽  
Control Agent ◽  
Draft Genome Sequence ◽  
Plant Pathogenic Fungi ◽  
Protein Coding ◽  
Protein Coding Genes

ABSTRACT The oomycete Pythium periplocum is an aggressive mycoparasite of a number of plant pathogenic fungi and oomycetes and therefore has potential as a biological control agent. Here, we report the first draft genome sequence of P. periplocum, which comprises 35.89 Mb. It contains 1,043 scaffolds and 14,399 predicted protein-coding genes.

Prioritisation of potential agents for the biological control of the invasive alien weed,Pereskia aculeata(Cactaceae), in South Africa

2014 ◽  
Vol 24 (4) ◽  
pp. 407-425 ◽  
Author(s):  
I.D. Paterson ◽  
M.D. Vitorino ◽  
S.C. de Cristo ◽  
G.D. Martin ◽  
M.P. Hill
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Alien Weed ◽  
Invasive Alien Weed

Clonostachys rosea associated with ponderosa and Coulter pine needles in Slovakia

Biologia ◽  
2017 ◽  
Vol 72 (11) ◽  
Author(s):  
Helena Ivanová ◽  
Ľudmila Hamarová ◽  
Peter Pristaš
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Pathogenic Fungi ◽  
Control Agent ◽  
Pine Needles ◽  
Plant Pathogenic Fungi ◽  
Clonostachys Rosea

Abstractis an important biological control agent against various plant pathogenic fungi. We collected – necrotic ponderosa and Coulter pine needles and obtained

scholarly journals Antifungal potential of crude extracts of Trichoderma spp.

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Eder Marques ◽  
Irene Martins ◽  
Sueli Correa Marques de Mello
Keyword(s):  
Biological Control ◽  
Broad Spectrum ◽  
Plant Pathogens ◽  
Pathogenic Fungi ◽  
Plant Diseases ◽  
Bioactive Molecules ◽  
Plant Pathogenic Fungi ◽  
Trichoderma Spp ◽  
Volatile Metabolites ◽  
Antibiotic Effect

Abstract Antibiosis is the mechanism by which certain microorganisms respond to the presence of others, secreting compounds or metabolites capable of inhibiting or impeding their development. The crude extract of Trichoderma contains a mixture of secondary compounds, which may show antibiotic effect, and has been used for the prospect of this fungus for biological control and other industrial purposes. Faced with the increasing demand of agriculture for ecologically compatible alternatives for the management of diseases, this work aimed to investigate the spectrum of action of Non-Volatile Metabolites (NVMs) of Trichoderma isolates against different plant pathogenic fungi. The antagonistic potential of NVMs was evaluated through the incorporation method of the filtered liquid extract in PDA medium. The assays showed that all the NVMs produced inhibited the fungus Sclerotinia sclerotiorum similarly. On the other hand, strains CEN1245 and CEN1274, both belonging to the species Trichoderma brevicompactum, showed broad spectrum against Sclerotium rolfsii, Colletotrichum gloesporioides, Verticillium dahliae, Fusarium oxysporum and Cylindrocladium sp. The present study describes isolates producing non-volatile metabolites with broad spectrum of antifungal action, as well as pathogen-specific. The Trichoderma spp. NVMs obtained from different soil samples cultivated with vegetables, cassava and maize were efficient in inhibiting plant pathogenic fungi belonging to other patossystems, such as forest or fruit, which could increase their potential application in biological control of plant diseases. In addition, these antagonistic fungi should be studied in greater depth for the identification of bioactive molecules of industrial interest or in commercial formulations of products for biological control of plant pathogens.

scholarly journals Interactions Between Myxobacteria, Plant Pathogenic Fungi, and Biocontrol Agents

Plant Disease ◽  
2002 ◽  
Vol 86 (8) ◽  
pp. 889-896 ◽  
Author(s):  
C. T. Bull ◽  
K. G. Shetty ◽  
K. V. Subbarao
Keyword(s):  
Biological Control ◽  
Phytophthora Capsici ◽  
Trichoderma Viride ◽  
Pathogenic Fungi ◽  
Pythium Ultimum ◽  
Soil Fumigation ◽  
Plant Pathogenic Fungi ◽  
Biological Control Agents ◽  
Lytic Enzymes ◽  
Wide Range

Myxobacteria are soil dwelling gram-negative gliding bacteria that form fruiting bodies containing myxospores. Although myxobacteria produce a wide range of antibiotics and lytic enzymes that assist in their ability to prey on other microorganisms, their role in agriculture has received little attention. Myxococcus spp. were isolated from soils in organic and conventionally managed strawberry production and transplant fields in the absence of soil fumigation. Fumigation with methyl bromide and chloropicrin virtually eliminated these organisms from soil. However, soil fumigation had no effect on the frequency of isolation of Myxococcus spp. from strawberry roots. Six Myxococcus spp. were tested in vitro against eight soilborne plant pathogenic fungi (Cylindrocarpon spp., Fusarium oxysporum f. sp. apii, Phytophthora capsici, Pythium ultimum, Rhizoctonia spp., Sclerotinia minor, Verticillium albo-atrum, and V. dahliae) and against two fungal biological control agents (Gliocladium virens and Trichoderma viride). Phytophthora capsici, Pythium ultimum, Rhizoctonia spp., S. minor, and T. viride were completely inhibited by all of the Myxococcus spp. tested. F. oxysporum f. sp. apii was the least sensitive to the myxobacteria, and no inhibition occurred with some Myxococcus spp. Inhibition of the other fungi tested was variable. Myxococcus coralloides inhibited nearly all the fungi tested. The ability of bacterial biological control agents to produce antibiotics and other secondary metabolites determined whether or not they were lysed by myxobacteria. Secondary metabolite production regulated by gacS protected Pseudomonas fluorescens strain CHA0 from lysis by myxobacteria. More specifically, phenazine antibiotics produced by Pseudomonas aureofaciens strain 30–84 protected it from lysis.

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