Silencing of an ABC transporter, but not a cadherin, decreases the susceptibility of Colorado potato beetle larvae to Bacillus thuringiensis ssp. tenebrionis Cry3Aa toxin

2021 ◽  
Author(s):  
Gözde Güney ◽  
Doğa Cedden ◽  
Sabine Hänniger ◽  
David G. Heckel ◽  
Cathy Coutu ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Abc Transporter ◽  
Colorado Potato Beetle ◽  
Potato Beetle

Colorado potato beetle chymotrypsin genes are differentially regulated in larval midgut in response to the plant defense inducer hexanoic acid or the Bacillus thuringiensis Cry3Aa toxin

2019 ◽  
Vol 166 ◽  
pp. 107224 ◽  
Author(s):  
María José López-Galiano ◽  
Inmaculada García-Robles ◽  
Víctor Manuel Ruiz-Arroyo ◽  
Sara Sanchís Oltra ◽  
Marko Petek ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Plant Defense ◽  
Colorado Potato Beetle ◽  
Hexanoic Acid ◽  
Larval Midgut ◽  
Potato Beetle

scholarly journals Comparison of three management schemes for Colorado potato beetle on early-season potatoes in Prince Edward Island

2005 ◽  
Vol 71 (3) ◽  
pp. 121-127 ◽  
Author(s):  
J.G. Stewart ◽  
A.P. Dornan
Keyword(s):  
Bacillus Thuringiensis ◽  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Prince Edward Island ◽  
Tuber Yield ◽  
Fourth Instar ◽  
Early Season ◽  
Potato Beetle ◽  
Untreated Check ◽  
Management Schemes

The economics of managing the Colorado potato beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae) on potatoes (Solarium tuberosum) with different strategies was tested at four sites on Prince-Edward-Island in 1989. Three treatments were tested at each site: 1) an untreated check, 2) an application of Bacillus thuringiensis var. tenebrionis or rotenone after a threshold of 0.5 Colorado Potato Beetle Equivalents (CPBE) per stalk was reached ( 1 CPBE = 1 spring adult, 8 first- or second- instar larvae, 3 third- or fourth- instar larvae, or 1.6 summer adults), and 3) applications of insecticide according to the grower's normal spray schedule. At one site, tuber yield of plots managed with the 0.5 CPBE-per-stalk threshold was similar to that of plots where the grower maintained his normal spray schedule, but three fewer applications of insecticides were needed in the former. At the remaining sites, where the density of Colorado potato beetles did not exceed the threshold, tuber yield was similar to that of the grower's plots. This suggests that there were needless applications of insecticides by the growers.

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