Article
Biochemistry & Molecular Biology
Abigail Ngugi-Dawit, Isaac Njaci, Thomas J. Higgins, Brett Williams, Sita R. Ghimire, Sagadevan G. Mundree, Linh Thi My Hoang
Summary: This study conducted proteomic analysis to compare the protein profiles of a pigeonpea tolerant accession and a susceptible variety to Helicoverpa armigera. The tolerant accession showed enhanced defense responses, including changes in secondary metabolite precursors, antioxidants, and the phenylpropanoid pathway. The findings suggest that IBS 3471 is a promising candidate for improving the genetic base of cultivated pigeonpea with traits for host plant resistance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Caihong Zhang, Jizhen Wei, Zaw Lin Naing, Ei Thinzar Soe, Gemei Liang
Summary: The study identified a serpin-e gene from Helicoverpa armigera, which is widely expressed and highly expressed in fourth-instar larvae and larval hemolymph. It can be induced by Cry1Ac protoxin and inhibits midgut proteases to activate Cry1Ac, contributing to the reduction of Cry1Ac insecticide activity in cotton bollworm. This suggests that serpin-e is involved in the toxicity of Cry1Ac to cotton bollworm by blocking serine protease activation of the protoxin.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2021)
Article
Food Science & Technology
Li Zhang, Xiaolong Yang, Rongzheng Huang, Cunxi Nie, Junli Niu, Cheng Chen, Wenju Zhang
Summary: Gossypol, a toxic compound derived from cotton, is harmful to animals. This study successfully degraded free gossypol using an enzymatic method and identified a carboxylesterase enzyme that effectively degrades gossypol. Furthermore, the study elucidated the degradation process of gossypol in vitro.
Article
Biochemistry & Molecular Biology
Jing-jing Xu, Yong-mei Chang, Mei Lu, Yuan Tie, Yan-ling Dong, Guang-you Chen, Zhi-qing Ma, Xi-li Liu, Yong-qiang Li
Summary: This study identified two CarE 001C mutants, H423I and R322L, that significantly improved hydrolase activities toward fenvalerate, and enhanced thermostability was observed in one of the mutant enzymes.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2021)
Article
Environmental Sciences
Junmei Ding, Yan Liu, Yanxiu Gao, Chengbo Zhang, Yafei Wang, Bo Xu, Yunjuan Yang, Qian Wu, Zunxi Huang
Summary: This study isolated a bacterium capable of degrading lambda-cyhalothrin and developed a whole cell biocatalyst for this process. The research demonstrates that the whole cell biocatalyst shows better stability and degradation efficiency under lower temperature conditions.
Article
Food Science & Technology
Zhongyuan Deng, Yuting Zhang, Liying Fang, Min Zhang, Lixiang Wang, Xinzhi Ni, Xianchun Li
Summary: This study reveals the role of flavone in plant defense against pests and identifies differentially expressed genes and their associated cis-regulatory elements. The findings provide insights into the interaction between plants and herbivorous insects.
Article
Biochemistry & Molecular Biology
T. Kiran, J. N. Mangala, K. Anjana, D. Manjulakumari
Summary: The research found that female Helicoverpa armigera injected with recombinant RCIS showed significantly reduced receptivity and calling behavior, with mating frequencies decreasing by 80%. This suggests that recombinant RCIS may be used to artificially induce non-receptivity in virgin females to prevent reproduction.
INSECT MOLECULAR BIOLOGY
(2021)
Article
Agronomy
Karim El Fakhouri, Rachid Boulamtat, Abdelhadi Sabraoui, Mustapha El Bouhssini
Summary: This study assessed yield losses and pod damage caused by H. armigera on chickpea crops and found effective biological and selective insecticides for control. The results demonstrate that two applications of emamectin benzoate or indoxacarb significantly reduced H. armigera larval population and pod damage.
Article
Green & Sustainable Science & Technology
Hasan Jafari, Behzad Habibpour, Seyed Ali Hemmati, Lukasz L. Stelinski
Summary: Helicoverpa armigera is a global polyphagous pest that causes economic damage to agricultural crops. This study found that certain legume plants, such as white kidney bean and cowpea, can effectively inhibit the reproduction and development of H. armigera. Selective use of these bean cultivars as potential sources of antibiosis may contribute to an integrated pest management program.
Article
Agronomy
Li-Sha Bai, Jing-Jing Xu, Cai-Xia Zhao, Ya-Li Chang, Yan-Ling Dong, Kai-Ge Zhang, Yong-Qiang Li, Yi-Ping Li, Zhi-Qing Ma, Xi-Li Liu
Summary: Deletion mutations in the glycine-rich region of CarE001G can enhance the metabolic activities of the enzyme towards beta-cypermethrin, potentially leading to resistance to this commonly used insecticide in H. armigera in the future.
PEST MANAGEMENT SCIENCE
(2021)
Article
Agronomy
Elina Karakantza, Christos I. Rumbos, Chris Cavalaris, Christos G. Athanassiou
Summary: In this study, three different colored funnel traps were evaluated simultaneously in Central Greece to compare their performance in capturing cotton bollworms and to analyze the distribution of this species among the traps. The striped trap captured significantly more adult moths compared to the other two traps. The only difference among these traps was the color of the external surface, suggesting that trap color does matter and brighter colors may be more attractive to Helicoverpa armigera.
Article
Agronomy
Alkiviadis Karakasis, Evagelia Lampiri, Christos I. Rumbos, Christos G. Athanassiou
Summary: The study evaluated the effects of funnel-trap color, trap height, and pheromone formulation on adult captures of the cotton bollworm in cotton fields in central Greece. Results showed that trap color and pheromone formulation affected male captures, with trap height having no influence. Seasonal differences were observed at individual dates during the trapping period.
Article
Chemistry, Multidisciplinary
M. M. Anees, S. B. Patil, D. N. Kambrekar, S. S. Chandrashekhar, Shamarao Jahagirdar
Summary: This research focuses on the biologically synthesized green silver nanoparticles from leaf extracts of Azadirachta indica and Pongamia pinnata and their effectiveness on H. armigera. The characterization results show that these nanoparticles have spherical shapes and different average diameters. The A. indica-based silver nanoparticles exhibit higher insecticidal activity compared to the P. pinnata-based nanoparticles. Shelf-life studies indicate that A. indica-based nanoparticles can maintain bioefficacy for up to three months.
Article
Chemistry, Multidisciplinary
Spiridon Mantzoukas, Foteini Kitsiou, Ioannis Lagogiannis, Panagiotis A. Eliopoulos
Summary: Fusarium species fungi, including F. solani, were found to be effective in controlling the cotton bollworm larvae, with F. solani showing the highest toxicity. This study suggests that F. solani could be a potential biocontrol agent for this notorious agricultural pest.
APPLIED SCIENCES-BASEL
(2022)
Article
Agronomy
Liying Wang, Limei He, Xiaoming Zhu, Jinwen Zhang, Na Li, Jingfang Fan, Huafeng Li, Xiaoji Sun, Lijiao Zhang, Yongling Lin, Kongming Wu
Summary: By using a combination of a bio-bait and insecticide, the population of Helicoverpa armigera in maize fields was significantly reduced, leading to an improved yield and quality of maize.
PEST MANAGEMENT SCIENCE
(2023)