Article
Biochemistry & Molecular Biology
Seyyedeh Kimia Mirhaghparast, Arash Zibaee, Jalil Hajizadeh, Samar Ramzi
Summary: The study found that tea seed saponin (TSS) added to the diet of Helicoverpa armigera larvae can reduce their pre-ovipositional period, decrease longevity and fecundity, and suppress the immune system. Additionally, saponin hinders nutrient uptake, disrupts feeding and growth. Therefore, TSS can be used as an effective tool for controlling insect pests in agricultural fields suffering from H. armigera damage.
ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Li Li, Ke Zhong, Jia-Lin Wang, Xu-Sheng Liu
Summary: Upon entry into the hemocoel of host insects, entomopathogenic fungi switch to yeast-like hyphal bodies that can evade host cellular immunity more effectively. Additionally, host pattern recognition receptors have a lower affinity for hyphal bodies compared to conidia, indicating that they have difficulty in eliciting the cellular immune response.
ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY
(2021)
Article
Agriculture, Multidisciplinary
Liu Ying-jie, Zhang Dan-dan, Yang Li-yu, Dong Yong-hao, Liang Ge-mei, Philip Donkersley, Ren Guang-wei, Xu Peng-jun, Wu Kong-ming
Summary: The study revealed differences in opsin expression levels and phototactic behavior between fall armyworm and cotton bollworm, with fall armyworm displaying faster flight speed but lower capture efficiency in light traps compared to cotton bollworm. These findings suggest that light traps could be used for monitoring and managing fall armyworm pests, but with lower efficiency than for cotton bollworm.
JOURNAL OF INTEGRATIVE AGRICULTURE
(2021)
Article
Agronomy
Marzieh Attarianfar, Azam Mikani, Mohammad Mehrabadi
Summary: Insect growth regulators (IGR) are a good option for insect pest management due to their minimal adverse effects on humans and animals. This study investigated the effects of the JH analog fenoxycarb on the antiviral immunity pathway and susceptibility to Helicoverpa armigera nuclear polyhedrosis virus (HaNPV) in H. armigera larvae. The results showed that fenoxycarb decreased the expression of core genes involved in miRNA, siRNA, and apoptosis, and increased mortality and replication of HaNPV in the larvae.
PEST MANAGEMENT SCIENCE
(2023)
Article
Environmental Sciences
Xiaowen Zhang, Manli Shen, Cui Wang, Miaomiao Gao, Liuen Wang, Zeyu Jin, Xiaohua Xia
Summary: This study evaluated the effects of aluminum exposure on crayfish. The results showed that aluminum induced biochemical, histological, gut microbial, and immune changes in the crayfish. Therefore, excessive aluminum exposure may have adverse effects on various biological processes of crayfish, posing a potential threat to crayfish culture.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Zoology
Zhenlong Jiao, Mingming Chen, Lina Jia, Chaoqin Sun, LongBing Yang, Guo Guo
Summary: This study provides insights into the effects of Ovomermis sinensis parasitism on the development of Helicoverpa armigera. It was found that O. sinensis arrests the host development by reducing 20E and maintaining JH, thereby causing developmental arrests. Rescue experiments showed that injecting 20E can rescue midgut replacement issues in the host.
JOURNAL OF INVERTEBRATE PATHOLOGY
(2022)
Article
Agronomy
Danielly A. M. Rios, Alexandre Specht, Vania F. Roque-Specht, Daniel R. Sosa-Gomez, Julia Fochezato, Juaci Malaquias, Gislene L. Goncalves, Gilson R. P. Moreira
Summary: Hybridization between Helicoverpa armigera and H. zea was investigated, with heterosis observed during immature development. However, reproductive incompatibilities were also found between parental species and subsequent hybrids. Interspecific gene flow and introgression events were confirmed, suggesting the need to monitor hybridization and resistance to pesticides. Management strategies should be implemented to prevent interspecific crosses and minimize the selection of resistant individuals.
PEST MANAGEMENT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
George-Rafael Samantsidis, Shane Denecke, Luc Swevers, George Skavdis, Sven Geibel, John Vontas
Summary: This study identified functional RNA polymerase II and III promoters in Helicoverpa zea, which can be used for genetic manipulation in the context of agricultural biotechnology. Furthermore, four U6 promoters of H. armigera were also identified and evaluated, showing their potential for methodologies such as RNAi and CRISPR/Cas9.
INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY
(2022)
Article
Environmental Sciences
Zhiqiang Tian, Meng Zha, Limei Cai, J. P. Michaud, Jie Cheng, Zhongjian Shen, Xiaoming Liu, Xiaoxia Liu
Summary: Infection of Helicoverpa armigera single nucleopolyhedrovirus (HearNPV) can restrict the growth and development of larvae by inducing reactive oxygen species (ROS) and affecting immune responses. The transcription factor forkhead box O (FoxO) upregulates the expression of peroxiredoxin 1 (Prx1), which plays a role in regulating larval development and immunity following HearNPV infection.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Multidisciplinary Sciences
Javed A. Mulla, Vaijayanti A. Tamhane
Summary: Plant defensin CanDef-20 has antibiotic effects on Helicoverpa armigera larvae, impacting insect metabolism and growth development through interactions with cell membrane, enzymes, cytoplasmic proteins, and triggering transposon mobilization.
SCIENTIFIC REPORTS
(2023)
Article
Marine & Freshwater Biology
Yali Luo, Wen-Xiong Wang
Summary: Oysters are excellent biomonitor of coastal pollution and can accumulate toxic metals such as copper and zinc. This study investigated the immune responses of different subpopulations of oyster hemocytes under different periods of zinc exposure, revealing temporal changes in immune modulation in response to zinc exposure.
AQUATIC TOXICOLOGY
(2022)
Article
Environmental Sciences
Zhe Xie, Shuaishuai Wei, Haomiao Dong, Hui Chen, Qianqian Zhang, Wei Liu, Jinxia Peng, Inna M. Sokolova, Menghong Hu, Youji Wang
Summary: The study reveals that diel-cycling hypoxia and salinity changes have significant impacts on the immune function of the Hong Kong oyster, with hypoxia and low salinity causing more severe effects. Recovery from the combined stress showed that some immune parameters were restored to normal levels, but hemocyte mortality and reactive oxygen species were still significantly affected, indicating latent effects of diel-cycling hypoxia and salinity changes on oyster health.
FRONTIERS IN MARINE SCIENCE
(2021)
Review
Fisheries
Wei Yang, Ngoc Tuan Tran, Chun-Hua Zhu, De-Fu Yao, Jude Juventus Aweya, Yi Gong, Hong-Yu Ma, Yue-Ling Zhang, Guang-Li Li, Sheng-Kang Li
Summary: Immune priming has been demonstrated as a form of immune memory in invertebrates without acquired immune systems, with implications for vaccinating economically valuable shellfish. Research on priming responses and mechanisms is necessary for the development of prophylactic strategies. Both humoral and cellular factors are involved in priming protection, but cellular immunity appears to be more important in pathogen clearance and survival.
Article
Entomology
Aniruddha Agnihotri, Naiyong Liu, Wei Xu
Summary: Chemosensory proteins (CSPs) are small, soluble proteins that play a crucial role in transporting odorant and pheromone molecules in the insect chemosensory system. Recent studies reveal that they also function in development, nutrient metabolism and insecticide resistance. In this study, 27 CSP genes were identified from the genome and transcriptome sequences of cotton bollworm, Helicoverpa armigera (Hubner). The expression patterns of these genes were studied by using transcriptomic data obtained from different tissues and stages. The results demonstrate that H. armigera CSP genes are not only highly expressed in chemosensory tissues, such as antennae, mouthparts, and tarsi, but also in the salivary glands, cuticle epidermis, and hind gut. A new method was developed that significantly increased the expression levels of two selected CSPs as soluble recombinant proteins for purification. This study advances our understanding of insect CSPs and provides a new approach to highly express recombinant CSPs in E. coli.
Article
Virology
Maite Arrizubieta, Oihane Simon, Adriana Ricarte-Bermejo, Miguel Lopez-Ferber, Trevor Williams, Primitivo Caballero
Summary: This study examines the consequences of coocclusion of two different viruses, HearSNPV and HearMNPV, on the pathogenicity, stability, and host range of mixed-virus occlusion bodies (OBs). The results show that HearSNPV is more pathogenic, has higher replication efficiency, and can infect a broader range of hosts compared to HearMNPV. However, the cooccluded mixtures are unstable in serial passage, with one virus dominating depending on the host species.