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Occurrence of molecularly diverse Bt Cry toxin-resistant mutations in insect pests of Bt+ corn and cotton crops and remedial approaches

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Title Occurrence of molecularly diverse Bt Cry toxin-resistant mutations in insect pests of Bt+ corn and cotton crops and remedial approaches
 
Creator Kumar, Sushil
Kumari, Renu
 
Subject cotton crops
Bt+ corn
Cry toxin-resistant
 
Description Accepted date: 23 January 2015
Cultivation of Bt + genotypes has dispensed with insecticidal sprays and thereby corn and cotton farmers
have hugely benefited worldwide. Recent recordings
of genetically diverse Cry-resistance in insect pests of
Bt + corn and cotton fields have raised grave concern.
Curiously, bulk of Cry-resistant pink bollworms
found in certain Bt + cotton fields in India proved homozygous for multiple linked mutations. Besides,
dominantly inheritable Cry-resistance and cross resistance between different Cry-proteins have also been
noted. To stem evolution of resistance against anti-
insect protein-toxins, new nematology research on
IPM procedures, complementary to refuge and Cry
stacking technologies is imminently needed.
S.K. thanks the Indian National Science
Academy for honorary scientistship. We thank J. A. Fabrick for useful
discussions and G. T. Gujar and K. R. Kranthi for sharing the photographs of pink bollworm. There is no conflict of interest involved.
 
Date 2016-01-07T08:42:30Z
2016-01-07T08:42:30Z
2015
 
Type Article
 
Identifier Current Science, 108: 1483- 1490
0011-3891
http://172.16.0.77:8080/jspui/handle/123456789/535
http://www.currentscience.ac.in/php/toc.php?vol=108&issue=08
 
Language en_US
 
Publisher Indian Academy of Sciences