Results 11 to 20 of about 366 (115)

Nutrient conditions determine the localization of Bacillus thuringiensis Vip3Aa protein in the mother cell compartment [PDF]

open access: yesMicrobial Biotechnology, 2021
Summary Vip3Aa was first identified as a protein secreted during the vegetative growth phase of Bacillus thuringiensis (Bt) bacteria and which shows high insecticidal toxicity against lepidopteran insect pests (Estruch et al., 1996).
Zeyu Wang   +6 more
doaj   +4 more sources

Antifungal Mechanism of Vip3Aa, a Vegetative Insecticidal Protein, against Pathogenic Fungal Strains [PDF]

open access: yesAntibiotics, 2021
Discovering new antifungal agents is difficult, since, unlike bacteria, mammalian and fungal cells are both eukaryotes. An efficient strategy is to consider new antimicrobial proteins that have variety of action mechanisms. In this study, a cDNA encoding
Seong-Cheol Park   +8 more
doaj   +5 more sources

Toxic Effects of Bt-(Cry1Ab+Vip3Aa) Maize on Storage Pest Paralipsa gularis (Zeller) [PDF]

open access: yesToxins
Paralipsa gularis (Zeller) is a storage pest; however, in recent years it has evolved into a considerable maize pest during the late growth stage in the border region between China and other Southeast Asian countries. Bt transgenic insect-resistant maize
Shuang Chen   +4 more
doaj   +4 more sources

Disruption of HaVipR1 confers Vip3Aa resistance in the moth crop pest Helicoverpa armigera. [PDF]

open access: yesPLoS Biology
The global reliance on Bacillus thuringiensis (Bt) proteins for controlling lepidopteran pests in cotton, corn, and soybean crops underscores the critical need to understand resistance mechanisms.
Andreas Bachler   +13 more
doaj   +3 more sources

Vegetative Insecticidal Protein Vip3Aa Is Transported via Membrane Vesicles in Bacillus thuringiensis BMB171 [PDF]

open access: yesToxins, 2022
Vegetative insecticidal protein Vip3Aa, secreted by many Bacillus thuringiensis (Bt) strains during the vegetative growth stage, represents the second-generation insecticidal toxin. In recent years, significant progress has been made on its structure and
Yizhuo Zhang   +5 more
doaj   +4 more sources

Insecticidal Effects of Transgenic Maize Bt-Cry1Ab, Bt-Vip3Aa, and Bt-Cry1Ab+Vip3Aa against the Oriental Armyworm, Mythimna separata (Walker) in Southwest China [PDF]

open access: yesToxins
The oriental armyworm, Mythimna separata (Walker), an important migratory pest of maize and wheat, is posing a severe threat to maize production in Asian countries. As source areas of spring–summer emigratory populations, the control of M.
Zhenghao Zhang   +3 more
doaj   +4 more sources

Early Warning of Resistance to Bt Toxin Vip3Aa in Helicoverpa zea [PDF]

open access: yesToxins, 2021
Evolution of resistance by pests can reduce the benefits of crops genetically engineered to produce insecticidal proteins from Bacillus thuringiensis (Bt).
Fei Yang   +4 more
doaj   +3 more sources

Mitochondria and Lysosomes Participate in Vip3Aa-Induced Spodoptera frugiperda Sf9 Cell Apoptosis [PDF]

open access: yesToxins, 2020
Vip3Aa, a soluble protein produced by certain Bacillus thuringiensis strains, is capable of inducing apoptosis in Sf9 cells. However, the apoptosis mechanism triggered by Vip3Aa is unclear.
Xiaoyue Hou   +8 more
doaj   +3 more sources

Oligomer Formation and Insecticidal Activity of Bacillus thuringiensis Vip3Aa Toxin [PDF]

open access: yesToxins, 2020
Bacillus thuringiensis (Bt) Vip3A proteins are important insecticidal proteins used for control of lepidopteran insects. However, the mode of action of Vip3A toxin is still unclear.
Ensi Shao   +8 more
doaj   +3 more sources

Baseline Susceptibility of Field Populations of Helicoverpa armigera to Bacillus thuringiensis Vip3Aa Toxin and Lack of Cross-Resistance between Vip3Aa and Cry Toxins [PDF]

open access: yesToxins, 2017
The cotton bollworm Helicoverpa armigera (Hübner) is one of the most damaging cotton pests worldwide. In China, control of this pest has been dependent on transgenic cotton producing a single Bacillus thuringiensis (Bt) protein Cry1Ac since 1997. A small,
Yiyun Wei   +3 more
doaj   +3 more sources

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