نتایج جستجو برای: biopesticides

تعداد نتایج: 646  

Journal: :Agricultura Tropica et Subtropica 2023

Abstract Synthetic chemicals continue to play an important role in reducing storage losses attributable insect pest activities. However, the adverse effects associated with some patented make synthetic pesticides less attractive and have given drive search for alternative methods of control. This study evaluated a traditional gin, akpeteshie crude extracts made four timber species, neem ( Azadi...

2014
Xing-Feng Huang Jacqueline M. Chaparro Kenneth F. Reardon Ruifu Zhang Qirong Shen Jorge M. Vivanco

The study of the interactions between plants and their microbial communities in the rhizosphere is important for developing sustainable management practices and agricultural products such as biofertilizers and biopesticides. Plant roots release a broad variety of chemical compounds to attract and select microorganisms in the rhizosphere. In turn, these plantassociated microorganisms, via differ...

2009
Andrew F Read Penelope A Lynch Matthew B Thomas

Insecticides are one of the cheapest, most effective, and best proven methods of controlling malaria, but mosquitoes can rapidly evolve resistance. Such evolution, first seen in the 1950s in areas of widespread DDT use, is a major challenge because attempts to comprehensively control and even eliminate malaria rely heavily on indoor house spraying and insecticide-treated bed nets. Current strat...

Journal: :FEMS microbiology letters 2007
Emilio Montesinos

Several diseases caused by viruses, bacteria and fungi affect plant crops, resulting in losses and decreasing the quality and safety of agricultural products. Plant disease control relies mainly on chemical pesticides that are currently subject to strong restrictions and regulatory requirements. Antimicrobial peptides are interesting compounds in plant health because there is a need for new pro...

2016
Michael L. McManus

Scientists have known since the 1890s that insects are vulnerable to diseases. However, it was not until the early 1950s that field demonstrations by Steinhouse in California led to the commercial production of biopesticides. The federal government registered the first microbial product in 1948, the bacterium Bacillus popillae, to control the Japanese beetle in turf. Although many entomopathoge...

Journal: :Journal of invertebrate pathology 2017
Juan Luis Jurat-Fuentes Neil Crickmore

Insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) are used as active components of biopesticides and as plant incorporated protectants in transgenic crops. One of the most relevant attributes of these Bt protein-based insecticidal technologies is their high specificity, which assures lack of detrimental effects on non-target insects, vertebrates and the environment. The ident...

2014
Rogério Schünemann Neiva Knaak Lidia Mariana Fiuza

The bacterium Bacillus thuringiensis (Bt) produces delta-endotoxins that possess toxic properties and can be used as biopesticides, as well as a source of genes for the construction of transgenic plants resistant to insects. In Brazil, the introduction of Bt soybean with insecticidal properties to the velvetbean caterpillar, the main insect pest of soybean, has been seen a promising tool in the...

2016
Tianpei Huang Xiaojuan Zhang Jieru Pan Xiaoyu Su Xin Jin Xiong Guan

Bacillus thuringiensis (Bt), one of the most successful biopesticides, may expand its potential by producing bacteriocins (thuricins). The aim of this study was to investigate the antimicrobial potential of a novel Bt bacteriocin, thuricin BtCspB, produced by Bt BRC-ZYR2. The results showed that this bacteriocin has a high similarity with cold-shock protein B (CspB). BtCspB lost its activity af...

2017
Suman Chaudhary Rupinder K. Kanwar Alka Sehgal David M. Cahill Colin J. Barrow Rakesh Sehgal Jagat R. Kanwar

Over the years, extensive use of commercially available synthetic pesticides against phytophagous insects has led to their bioaccumulation in the environment causing increased resistance and reduction in soil biodiversity. Further, 90% of the applied pesticides enter the various environmental resources as a result of run-off, exposing the farmers as well as consumers of the agricultural produce...

2017
Pankaj Trivedi Peer M. Schenk Matthew D. Wallenstein Brajesh K. Singh

Plant-associated microbiomes have tremendous potential to improve plant resilience and yields in farming systems. There is increasing evidence that biological technologies that use microbes or their metabolites can enhance nutrient uptake and yield, control pests and mitigate plant stress responses. However, to fully realize the potential of microbial technology, their efficacy and consistency ...

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