Toxins for Transgenic Resistance to Hemipteran Pests

Toxins

Nanasaheb P. Chougule¹ 

[1] id="af1-toxins-04-00405">Department of Entomology, Iowa State University, 418 Science II, Ames, IA 50011, U

关键词: Hemiptera;    aphids;    plant bug;    Cry toxin;    plant lectins;    plant protease inhibitors;    transgenic plants;    insect resistance;   

DOI  :  10.3390/toxins4060405

来源: mdpi

【 摘 要 】

The sap sucking insects (Hemiptera), which include aphids, whiteflies, plant bugs and stink bugs, have emerged as major agricultural pests. The Hemiptera cause direct damage by feeding on crops, and in some cases indirect damage by transmission of plant viruses. Current management relies almost exclusively on application of classical chemical insecticides. While the development of transgenic crops expressing toxins derived from the bacterium Bacillus thuringiensis (Bt) has provided effective plant protection against some insect pests, Bt toxins exhibit little toxicity against sap sucking insects. Indeed, the pest status of some Hemiptera on Bt-transgenic plants has increased in the absence of pesticide application. The increased pest status of numerous hemipteran species, combined with increased prevalence of resistance to chemical insecticides, provides impetus for the development of biologically based, alternative management strategies. Here, we provide an overview of approaches toward transgenic resistance to hemipteran pests.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.