Bacteria in the genus Streptomyces are effective biological control agents for management of fungal plant pathogens: a meta-analysis

BioControl ◽  
2021 ◽  
Author(s):  
Nicholas LeBlanc
Keyword(s):  
Biological Control ◽  
Plant Pathogens ◽  
Meta Analysis ◽  
Biological Control Agents ◽  
Genus Streptomyces ◽  
Fungal Plant Pathogens

scholarly journals Biological Control Potential of Streptomyces sp. AR10 Producing Albocycline Isolated from Soil around Ant Nest

2018 ◽  
Vol 10 (3) ◽  
pp. 54
Author(s):  
Tatsuya Ohike ◽  
Tetsuya Matsukawa ◽  
Masahiro Okanami ◽  
Shin’ichiro Kajiyama ◽  
Takashi Ano
Keyword(s):  
Biological Control ◽  
Plant Pathogens ◽  
Sequence Similarity ◽  
Antifungal Compound ◽  
Dual Culture ◽  
High Sequence Similarity ◽  
Genus Streptomyces ◽  
Fungal Plant Pathogens ◽  
Biological Control Potential ◽  
Dual Culture Assay

Fifty actinomycetes were isolated from fifteen soil samples and were screened for their antagonism against fungal plant pathogens by dual culture assay, and one of the strain named AR10 was shown to be most effective in suppression of growth of plant pathogen. An antifungal compound of AR10 was extracted, and purified by TLC and HPLC. As a result of NMR and LC-MS analysis, the antifungal compound was identified as albocycline. AR10 suppressed Rhizoctonia damping-off of cucumber in infection control assay. The 16S rDNA sequence of AR10 shows high sequence similarity to those of genus Streptomyces, and the closest similarity was found in the sequence of S. lanatus NBRC 12787T with 98.7% similarity. However, the production of albocycline in Streptomyces closely related to AR10 in the phylogenetic tree has not been reported. Our finding suggests that AR10 can be a candidate for biological control agents.

Endophytic Microorganisms as Biological Control Agents for Plant Pathogens: A Panacea for Sustainable Agriculture

2019 ◽  
pp. 1-20
Author(s):  
Charles Oluwaseun Adetunji ◽  
Deepak Kumar ◽  
Meenakshi Raina ◽  
Olawale Arogundade ◽  
Neera Bhalla Sarin
Keyword(s):  
Biological Control ◽  
Sustainable Agriculture ◽  
Plant Pathogens ◽  
Biological Control Agents ◽  
Endophytic Microorganisms

Development of a strain-specific SCAR marker for the detection of Trichoderma atroviride 11, a biological control agent against soilborne fungal plant pathogens

2001 ◽  
Vol 38 (6) ◽  
pp. 343-350 ◽  
Author(s):  
M. Rosa Hermosa ◽  
Isabel Grondona ◽  
José María Díaz-Mínguez ◽  
Enrique A. Iturriaga ◽  
Enrique Monte
Keyword(s):  
Biological Control ◽  
Plant Pathogens ◽  
Scar Marker ◽  
Biological Control Agent ◽  
Control Agent ◽  
Trichoderma Atroviride ◽  
Fungal Plant Pathogens

scholarly journals Impact of the omic technologies for understanding the modes of action of biological control agents against plant pathogens

BioControl ◽  
2015 ◽  
Vol 60 (6) ◽  
pp. 725-746 ◽  
Author(s):  
Sebastien Massart ◽  
Michele Perazzolli ◽  
Monica Höfte ◽  
Ilaria Pertot ◽  
M. Haïssam Jijakli
Keyword(s):  
Biological Control ◽  
Plant Pathogens ◽  
Biological Control Agents ◽  
Modes Of Action

scholarly journals Cultural and morphological characterization of rhizospheric isolates of fungal antagonist Trichoderma

2014 ◽  
Vol 6 (2) ◽  
pp. 451-456 ◽  
Author(s):  
K. K. Sharma ◽  
U. S. Singh
Keyword(s):  
Plant Pathogens ◽  
Linear Growth ◽  
Morphological Characteristics ◽  
Morphological Characterization ◽  
Biological Control Agents ◽  
Great Economic Importance ◽  
Ability To Act ◽  
Fungal Plant Pathogens ◽  
Trichoderma Sp

The genus Trichoderma contains species that are of a great economic importance due to their ability to act as biological control agents against a large variety of fungal plant pathogens. In the present investigation thirty isolates of the Trichoderma sp. were obtained from the rhizosphere soils of different plants at different locations at Nainital, Almora, Udham Singh Nagar, Derhadun, Haridwar and Tehri Garhwal districts of Uttarakhand (India). The isolates were characterized on the basis of their cultural and morphological characteristics. The cultural characteristics included linear growth, colony colour, pigmentation and growth pattern. Morphological characteristics studied were structure, shape and arrangement of conidiophores, phialides and conidia. Out of thirty isolates, 6 isolates namely PB10, PB13, PB23, PB26, PB27 and PB28 were identified as T. virens and remaining 24 isolates as T. harzianum.

scholarly journals Exploration and Identification Trichoderma spp. as a Biological Control Agents to Plant Pathogens and Starter Making Biological Fertilizers

2020 ◽  
Vol 13 (1) ◽  
pp. 222-226
Author(s):  
Henny V.G. Makal ◽  
Max M. Ratulangi ◽  
Denny S. Sualang
Keyword(s):  
Biological Control ◽  
Population Density ◽  
Plant Pathogens ◽  
Soil Samples ◽  
Dilution Method ◽  
Biological Control Agents ◽  
Trichoderma Spp ◽  
Trichoderma Species ◽  
Trichoderma Sp ◽  
Biological Fertilizer

The objectives of this study are: (1) to inventory Trichoderma spp. in North Minahasa District, South Minahasa District, and Tomohon City-Minahasa District, (2) inventory of Trichoderma spp. in the rhizosphere of cultivated and fallow gardens, and (3) calculate the population density of Trichoderma spp. all soil samples. The scope of this study is the biological control of plant pathogens, induce plant resistance, and biological fertilizer production. Trichoderma isolation spp. has been carried out by dilution method and cultured on PDA + antibiotics. Population density of Trichoderma spp. calculated using the plate calculation method. Identification of this species function based on the color and patterns of sporulation in the colony; hyphae and clamydospores; conidiophores; and phialides and phialospores. Trichoderma species found in North Minahasa District were T. harzianum, T. koningii, and T. viride; in South Minahasa District, T. koningii and T. viride; and in Tomohon City-Minahasa District, T. koningii and T. viride. In fallow gardens were T. harzianum, T. koningii, and T. viride, and in cultivated gardens were T. koningii and T. viride. Population densities of Trichoderma sp. in South Minahasa District, North Minahasa District, and Tomohon City-Minahasa District, respectively 1,363.64, 466.67, and 26.67 CFU / g soil.

scholarly journals Meta-Analysis Suggests Differing Indirect Effects of Viral, Bacterial, and Fungal Plant Pathogens on the Natural Enemies of Insect Herbivores

Insects ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 765
Author(s):  
Ussawit Srisakrapikoop ◽  
Tara J. Pirie ◽  
Mark D. E. Fellowes
Keyword(s):  
Natural Enemies ◽  
Indirect Effects ◽  
Plant Pathogens ◽  
Meta Analysis ◽  
Trophic Levels ◽  
Plant Diseases ◽  
Plant Quality ◽  
Insect Herbivore ◽  
Insect Herbivores ◽  
Fungal Plant Pathogens

Indirect effects are ubiquitous in nature, and have received much attention in terrestrial plant–insect herbivore–enemy systems. In such tritrophic systems, changes in plant quality can have consequential effects on the behavior and abundance of insect predators and parasitoids. Plant quality as perceived by insect herbivores may vary for a range of reasons, including because of infection by plant pathogens. However, plant diseases vary in their origin (viral, bacterial or fungal) and as a result may have differing effects on plant physiology. To investigate if the main groups of plant pathogens differ in their indirect effects on higher trophic levels, we performed a meta-analysis using 216 measured responses from 29 primary studies. There was no overall effect of plant pathogens on natural enemy traits as differences between pathogen types masked their effects. Infection by fungal plant pathogens showed indirect negative effects on the performance and preference of natural enemies via both chewing and piercing-sucking insect herbivore feeding guilds. Infection by bacterial plant pathogens had a positive effect on the natural enemies (parasitoids) of chewing herbivores. Infection by viral plant pathogens showed no clear effect, although parasitoid preference may be positively affected by their presence. It is important to note that given the limited volume of studies to date on such systems, this work should be considered exploratory. Plant pathogens are very common in nature, and tritrophic systems provide an elegant means to examine the consequences of indirect interactions in ecology. We suggest that further studies examining how plant pathogens affect higher trophic levels would be of considerable value.

Sign in / Sign up

Export Citation Format

Share Document