Biological control of malaria vectors by locally produced primary powder of bacillus thuringiensis serotype H-14 in Iran.

1998 ◽  
Vol 47 ◽  
pp. 277
Author(s):  
F. Fayaz ◽  
N Moazami ◽  
M. Zaiem
Keyword(s):  
Biological Control ◽  
Bacillus Thuringiensis ◽  
Malaria Vectors

scholarly journals Behavior of the Biological Control Agent Bacillus thuringiensis subsp. aizawai ABTS-1857 and Salmonella enterica on Spinach Plants and Cut Leaves

2021 ◽  
Vol 12 ◽  
Author(s):  
Xingchen Zhao ◽  
Marcelo Belchior Rosendo da Silva ◽  
Inge Van der Linden ◽  
Bernadette D. G. M. Franco ◽  
Mieke Uyttendaele
Keyword(s):  
Biological Control ◽  
Bacillus Thuringiensis ◽  
Salmonella Enterica ◽  
Biological Control Agent ◽  
Fresh Produce ◽  
Agricultural Field ◽  
Vegetative Cells ◽  
Post Harvest ◽  
Cut Leaves ◽  
Spinach Leaves

Fresh produce has been identified as an important vehicle for the transmission of foodborne pathogens. This study evaluated the behavior of vegetative cells and spores of Bacillus thuringiensis, one of the main biological control agents (BCAs) used in the world, and Salmonella enterica on spinach plants (pre-harvest) and spinach cut leaves (post-harvest) at 12°C, experimentally inoculated as single or co-cultures. The results evidenced that spray-inoculated commercial BCA containing Bacillus thuringiensis subsp. aizawai ABTS-1857 (BTa ABTS-1857) spores persisted well on spinach leaves in both pre- and post-harvest simulations. However, when BTa ABTS-1857 vegetative cells were spray-inoculated, more than 2 log reductions in the counts of B. thuringiensis were observed during 20 days pre- and 5 days post-harvest simulations, respectively. The counts of S. Montevideo on the spinach cut leaves during post-harvest storage at 12°C for 5 days remained unchanged, whereas 1 log reduction was noted during pre-harvest. Moreover, during pre-harvest simulation, when co-inoculated with BTa ABTS-1857 vegetative cells or spores, additional 0.5 or 1.0 log reductions were detected on the counts of S. Montevideo in the spinach leaves on the 10th day. These results were obtained under laboratory conditions, and further findings in longitudinal studies from farm (in the agricultural field) to retail (end of shelf life) will contribute to understanding of the role of B. thuringiensis as a BCA on growth/survival of Salmonella spp. in fresh produce.

Friendly Foes: The Bio-control Agents

2018 ◽  
Vol 2 (01) ◽  
Author(s):  
Kalpana Singh
Keyword(s):  
United States ◽  
Biological Control ◽  
Bacillus Thuringiensis ◽  
United States Of America ◽  
Control Agent ◽  
Mosquito Larvae ◽  
Bt Cotton ◽  
Economic Threshold ◽  
Pest Population ◽  
Natural Way

The bio-control agents are those organisms that manage the pest population in natural way and keep them below the economic threshold and are thus applied by the agency of man. This process is known as bio-control or biological control. They are foes to the pests and are thus beneficial and a friend for us. There are many pathogens (Bacillus thuringiensis, Bt cotton), parasites (parasitoids, ex. Parasitic wasps, tachinid flies) and predators (ex. Gambusia fish against mosquito larvae) that can be applied as bio-control agents. Many are being used as effective pest control agent in Europe and United States of America. There is lots of potential in this field and more explorations and researches need to be done in an agricultural country like India.

scholarly journals Potential for Bacillus thuringiensis and Other Bacterial Toxins as Biological Control Agents to Combat Dipteran Pests of Medical and Agronomic Importance

Toxins ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 773
Author(s):  
Daniel Valtierra-de-Luis ◽  
Maite Villanueva ◽  
Colin Berry ◽  
Primitivo Caballero
Keyword(s):  
Biological Control ◽  
Bacillus Thuringiensis ◽  
Dengue Fever ◽  
Yellow Fever ◽  
Insecticidal Activity ◽  
Bacterial Toxins ◽  
Biological Control Agents ◽  
Bacterial Proteins ◽  
Entomopathogenic Bacteria ◽  
Biological Control Of Insects

The control of dipteran pests is highly relevant to humans due to their involvement in the transmission of serious diseases including malaria, dengue fever, Chikungunya, yellow fever, zika, and filariasis; as well as their agronomic impact on numerous crops. Many bacteria are able to produce proteins that are active against insect species. These bacteria include Bacillus thuringiensis, the most widely-studied pesticidal bacterium, which synthesizes proteins that accumulate in crystals with insecticidal properties and which has been widely used in the biological control of insects from different orders, including Lepidoptera, Coleoptera, and Diptera. In this review, we summarize all the bacterial proteins, from B. thuringiensis and other entomopathogenic bacteria, which have described insecticidal activity against dipteran pests, including species of medical and agronomic importance.

Biology and taxonomy ofBacillus cereus,Bacillus anthracis, andBacillus thuringiensis

2007 ◽  
Vol 53 (6) ◽  
pp. 673-687 ◽  
Author(s):  
G.T. Vilas-Bôas ◽  
A.P.S. Peruca ◽  
O.M.N. Arantes
Keyword(s):  
Biological Control ◽  
Population Genetics ◽  
Bacillus Thuringiensis ◽  
Bacillus Cereus ◽  
Bacillus Anthracis ◽  
Bacillus Cereus Group ◽  
Genetic Characteristics ◽  
Biological Control Of Insects ◽  
Genomic Studies ◽  
Ofbacillus Cereus

Three species of the Bacillus cereus group (Bacillus cereus, Bacillus anthracis , and Bacillus thuringiensis ) have a marked impact on human activity. Bacillus cereus and B. anthracis are important pathogens of mammals, including humans, and B. thuringiensis is extensively used in the biological control of insects. The microbiological, biochemical, and genetic characteristics of these three species are reviewed, together with a discussion of several genomic studies conducted on strains of B. cereus group. Using bacterial systematic concepts, we speculate that to understand the taxonomic relationship within this group of bacteria, special attention should be devoted also to the ecology and the population genetics of these species.

scholarly journals Routine implementation costs of larviciding with Bacillus thuringiensis israelensis against malaria vectors in a district in rural Burkina Faso

2016 ◽  
Vol 15 (1) ◽  
Author(s):  
Peter Dambach ◽  
Michael Schleicher ◽  
Hans-Christian Stahl ◽  
Issouf Traoré ◽  
Norbert Becker ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Burkina Faso ◽  
Malaria Vectors ◽  
Bacillus Thuringiensis Israelensis ◽  
Implementation Costs
Sign in / Sign up

Export Citation Format

Share Document