Microbial Biopesticides by Opender Koul and G.S.Dhaliwal



Bibliographic Information:
Title: Microbial-biopesticides
Editor: G.S.Dhaliwal
Opender Koul
Edition: 1st
Publisher: Taylor & Francis Now Published by (CRC Press)
Length: 332 pages
Size: 4.35 MB
Language: English



In order to understand whether biotechnology is making a positive contribution to
integrated pest management, it is useful to review the pest control biotechnologies presently
available or in development. One focus of biotechnological research has been on
improving natural enemies of pests as pest control agents. This has focused principally on
pathogens of insect pests and their use as formulated biological pesticides. Emphasis has
been placed on bacteria and viruses, largely because they are better understood and more
easily manipulated, as opposed to fungi, protozoa, nematodes, etc. A key advantage of
biological agents relative to chemical pesticides is their capacity both to kill pests and
reproduce at the expense of pest thereby giving some control in the future pest
generations.
The most common biological control has focused on insect pathogen Bacillus
thuringiensis (Bt), which has been the principal target of product development, because it
is less harmful to predators and parasitoids than broad-spectrum insecticides. Other insect
pathogens are better adapted to having a continuous impact on pests in crops, such as
viruses, fungi, nematodes and protozoa, which can cause continuing outbreaks and
suppress pests under natural conditions. However, these organisms are as yet little
developed as biopesticides. Insect viruses have a market in their natural form as
biopesticides, mostly against caterpillar pests of forestry and field crops. Biotechnological
research has focused on engineering of certain viruses to express genes whose toxins kill
faster than the wild-type viruses.
This volume is designed to provide comprehensive treatment of microbials as
biopesticides and various advances made in this direction in recent years. We have
attempted to address the use of bacterial, fungal, viral and nematode based biopesticides
in a balanced and complementary manner. We have also tried to focus on advantages and
disadvantages of such materials along with their role in genetic engineering, because one has
to ensure that environmental persistence of engineered organisms is not encouraged.
We are pleased to have contributors from various parts of the world, and who are very
well known in their respective fields of biopesticides. We hope that this volume will
provide a lot of material for further research exploration and discussion.
The volume has 9 chapters which deal with antiinsectan compounds from
microorganisms, microbial biopesticides developed as inducible plant defensive systems,
baculoviruses, their pathogenesis and role in IPM and also the impact of genetic
engineering and tissue culture for their efficient utilization in insect control. Chapters on
nematodes, fungi and bioherbicides have been included to consider specific problems in
their utilization as biopesticides.




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