Record Details

Prospects for using transgenic resistance to insects in crop improvement

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/1863/
http://ejb.ucv.cl/content/vol3/issue2/full/3/bip/index.html
 
Title Prospects for using transgenic resistance to insects in crop improvement
 
Creator Sharma, H C
Sharma, K K
Seetharama, N
Ortiz, R
 
Subject Agriculture-Farming, Production, Technology, Economics
Entomology
 
Description Integrated pest management has historically placed great hopes on host plant resistance. However, conventional host-plant resistance to insects involves quantitative traits at several loci. As a result, the progress has been slow and difficult to achieve. With the advent of genetic transformation techniques, it has become possible to clone and insert genes into the crop plants to confer resistance to insect pests. Resistance to insects has been demonstrated in transgenic plants expressing genes for δ-endotoxins from Bacillus thuringiensis (Bt), protease inhibitors, enzymes and plant lectins. Most of the plant derived genes produce chronic rather than toxic effects and some insect pests are not sensitive to some of these factors. The potential of plant derived genes can be realized by deploying them in combination with host plant resistance and exotic genes. Genes conferring resistance to insects have been inserted into crop plants such as maize, cotton, potato, tobacco, potatoes, rice, broccoli, lettuce, walnuts, apples, alfalfa and soyabean. Genetically transformed crops with Bt genes have been deployed for cultivation in USA, China and Australia. However, very little has been done to use this technology for improving crop production in the harsh environments of the tropics, where the need for increasing food production is most urgent. International agricultural research centres, advanced research institutes and the seed sector should make an effort to use these new tools for increasing food production in poorer regions of the world. There is an urgent need to develop a scientifically sound strategy to deploy exotic and plant derived genes for minimizing the extent of losses caused by insect pests. Equally important is the need for following the biosafety regulations, more responsible public debate, social attitude and better presentation of the benefits for a rational deployment of the genetically transformed plants.
 
Publisher Universidad Católica de Valparaíso
 
Date 2000
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/1863/1/ElecJBiot3_2_1-26_2000.pdf
Sharma, H C and Sharma, K K and Seetharama, N and Ortiz, R (2000) Prospects for using transgenic resistance to insects in crop improvement. Electronic Journal of Biotechnology, 3 (2). pp. 1-26. ISSN 0717-3458