Article
Biotechnology & Applied Microbiology
Cheng Song Zhou, Huan Huan Lv, Xiao Hu Guo, Qian Cao, Rui Xingyue Zhang, De Ying Ma
Summary: The study on resistance against neonicotinoids in whiteflies revealed differential gene expression profiles, mainly involving cuticle protein and P450 genes, in the selected resistant whitefly strains, providing reference for further research on resistance and cross-resistance against neonicotinoids in B. tabaci.
Article
Agronomy
Kaixin Li, Jiantao Liu, Ziqiong Geng, Wei Xu, Zhuang Zhang, Dong Chu, Lei Guo
Summary: This study identified a highly resistant Bemisia tabaci population to dinotefuran, a new neonicotinoid insecticide. The resistance was found to be polygenic and incompletely recessive. The study revealed the involvement of P450 enzymes, particularly the CYP6DW5 gene, in the resistance mechanism. This information is important for resistance management in B. tabaci.
PEST MANAGEMENT SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Tian-hua Du, Cheng Yin, Lian-you Gui, Jin-jin Liang, Shao-nan Liu, Bu-li Fu, Chao He, Jing Yang, Xue-gao Wei, Pei-Pan Gong, Ming-jiao Huang, Hu Xue, Jin-Yu Hu, He Du, Yao Ji, Rong Zhang, Chao Wang, Cheng-jia Zhang, Xin Yang, You-jun Zhang
Summary: The whitefly has developed high metabolic resistance to most neonicotinoids, and UGT353G2 may be involved in this resistance. UGT inhibitors enhance the toxic damage of neonicotinoids to the whitefly, while RNA interference increases the sensitivity of the whitefly to neonicotinoids.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2023)
Article
Entomology
Muhammad Zaryab Khalid, Sohail Ahmed, Ibrahim Al-Ashkar, Ayman EL Sabagh, Liyun Liu, Guohua Zhong
Summary: The study found that the field-collected population of Bemisia tabaci was initially susceptible to the selected insecticides, but continuous selection for only five generations significantly increased resistance development. Different insecticides resulted in varying degrees of resistance after continuous selection, indicating the need for proper management strategies in the field.
Article
Multidisciplinary Sciences
Muhammad Saleem, Dilbar Hussain, Mansoor ul Hasan, Muhammad Sagheer, Ghulam Ghouse, Muhammad Zubair, J. K. Brown, Sikander Ali Cheema
Summary: The cotton whitefly Bemisia tabaci in Pakistan has developed moderate to high level resistance to neonicotinoids insecticides, but exhibits low resistance to insect growth regulators. The results provide guidance for effective whitefly management and delaying resistance development.
Review
Environmental Sciences
Lucia Zuscikova, Denis Bazany, Hana Greifova, Nikola Knizatova, Anton Kovacik, Norbert Lukac, Tomas Jambor
Summary: Neonicotinoids are widely used insecticides in crop protection due to their high toxicity to pests and ease of application, but their persistent nature and systemic spread raise concerns about environmental contamination and non-target organism toxicity. Acetamiprid, a new generation insecticide with low toxicity to honeybees, is considered a safer alternative. However, extensive usage of acetamiprid has also negatively impacted non-target animals. This review summarizes animal studies that investigated the toxicity of specific neonicotinoids, highlighting reproductive system disruptions and metabolic changes in both male and female organisms.
Article
Entomology
Debashis Roy, Sujan Biswas, Abhisek Biswas, Gautam Chakraborty, Pijush Kanti Sarkar
Summary: Mixtures of neonicotinoid and ketoenol insecticides at different ratios effectively enhance the toxicity to neonicotinoids in resistant pest populations. The combination of certain neonicotinoids with spiromesifen or spirotetramat at specific ratios can restore the neonicotinoid susceptibility in B. tabaci.
JOURNAL OF ASIA-PACIFIC ENTOMOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Manal A. A. Abdel Razik, Zamzam M. Al Dhafar, Aisha M. Alqahtani, Mohamed A. Osman, Mohamed E. Sweelam
Summary: This study evaluated the effectiveness of imidacloprid insecticide on controlling the whitefly in tomato plants, and measured the residues of the insecticide in tomato leaves and fruits. The results showed that treating the seeds with imidacloprid and spraying the plants with recommended rates effectively reduced the number of whiteflies and increased tomato yield. The residues of imidacloprid were higher in leaves than in fruits, but remained below the maximum residue level, indicating that imidacloprid is a safe insecticide for controlling whiteflies.
Article
Agriculture, Multidisciplinary
Hu Xue, Buli Fu, Mingjiao Huang, Chao He, Jinjin Liang, Jing Yang, Xuegao Wei, Shaonan Liu, Tianhua Du, Yao Ji, Cheng Yin, Peipan Gong, JinYu Hu, He Du, Rong Zhang, Chao Wang, Jahangir Khajehali, Qi Su, Xin Yang, Youjun Zhang
Summary: In this study, it was found that the increased resistance of whitefly to imidacloprid is associated with the overexpression of CYP6DW3 and CYP6DW5v1 genes, and knockdown of these genes weakened the resistance. Moreover, it was shown that the CYP6DW3 protein can metabolize 14.11% of imidacloprid in vitro. These findings enhance our understanding of insect resistance mechanisms and contribute to the development of integrated pest management frameworks.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Agriculture, Multidisciplinary
Cheng Yin, Lian-You Gui, Tian-Hua Du, Cheng-Jia Zhang, Xue-Gao Wei, Jing Yang, Ming-Jiao Huang, Bu-Li Fu, Pei-Pan Gong, Jin-Jin Liang, Shao-Nan Liu, Hu Xue, Jin-Yu Hu, Yao Ji, Chao He, He Du, Chao Wang, Rong Zhang, Qing-Jun Wu, Xin Yang, You-Jun Zhang
Summary: The study found that the BT beta 1 subunit of insect nicotinic acetylcholine receptors plays a role in the susceptibility of B. tabaci to neonicotinoid insecticides.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Tianhua Du, Buli Fu, Xuegao Wei, Cheng Yin, Jing Yang, Mingjiao Huang, Jinjin Liang, Peipan Gong, Shaonan Liu, Hu Xue, Jinyu Hu, Yongchao Diao, Lianyou Gui, Xin Yang, Youjun Zhang
Summary: The study identified and cloned two UGT genes, UGT352A4 and UGT352A5, which were found to be over-expressed in thiamethoxam-resistant B. tabaci. The results suggest that UGT352A5 may play a significant role in conferring thiamethoxam resistance in the insect.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Food Science & Technology
Ran Wang, Yong Fang, Wunan Che, Qinghe Zhang, Jinda Wang, Chen Luo
Summary: This study monitored levels of resistance to abamectin in field-collected B. tabaci populations, and found that six populations exhibited strong resistance. The Xinzheng population displayed significantly increased resistance to abamectin and cross-resistance to other insecticides. The findings provide valuable information for developing new pest control strategies and delaying the evolution of abamectin resistance in whitefly populations.
Article
Agronomy
H. Zheng, W. Xie, B. Fu, S. Xiao, X. Tan, Y. Ji, J. Cheng, R. Wang, B. Liu, X. Yang, Z. Guo, S. Wang, Q. Wu, B. Xu, X. Zhou, Y. Zhang
Summary: The study conducted resistance testing on populations of Bemisia tabaci from different provinces in China, revealing low resistance to abamectin and increasing resistance to spirotetramat, cyantraniliprole, and pyriproxyfen over time. Therefore, a rotation system using insecticides with differing modes of action should be implemented to reduce the potential of resistance development.
PEST MANAGEMENT SCIENCE
(2021)
Article
Agronomy
Fan Wang, Jin Liu, Shuai Shuai, Chunli Miao, Baojie Chi, Peng Chen, Kai Wang, Hongyang Li, Yongjie Liu
Summary: The study found that the Mediterranean species of Bemisia tabaci has developed resistance to pymetrozine after continuous application, with a potential 7.2-15.9 generations needed to obtain a ten-fold increase in resistance in the field. The Pyme-SEL strain showed low cross-resistance to neonicotinoids compared to susceptible populations.
PEST MANAGEMENT SCIENCE
(2021)
Review
Biochemistry & Molecular Biology
Qian Wang, Chen Luo, Ran Wang
Summary: Two invasive whitefly biotypes, MEAM1 (B) and MED (Q), with higher pesticide resistance levels, have been found in China. Recent studies have identified metabolic resistance mechanisms and target site mutations in these populations, which render them resistant to a range of insecticides. Novel pest control agents, such as RNA-based pesticides and nano-pesticides, show promise for future field control of these invasive whiteflies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Agronomy
Talent Namatsheve, Remi Cardinael, Regis Chikowo, Marc Corbeels, Joyful Tatenda Rugare, Stanford Mabasa, Aude Ripoche
Summary: Weeds pose a significant threat to crop growth in low-input cropping systems in sub-Saharan Africa. The study found that planting sole cowpea can effectively reduce weed infestation, while having little impact on maize yield.
Article
Agronomy
Jens G. Froese, Justine V. Murray, Nicholas J. Beeton, Rieks D. van Klinken
Summary: This article introduces a generic Bayesian network model called PRReSTo, which estimates likely infestation rates of host items in consignments. PRReSTo takes into account the vulnerability of host items to pest infestation, the abundance of pests to which host items are exposed, and the effects of risk-reducing measures. PRReSTo can be used to evaluate the effectiveness and acceptability of risk reduction measures in different pest-host systems.
Article
Agronomy
Alexis Delaplace, Mathieu Coulis, Gwenaelle Cottin, Philippe Tixier
Summary: This study compares the effectiveness of two fallow trapping patterns and finds that internal trapping of fallow land can clean up plots twice as quickly as trapping surrounding the fallow land. Additionally, trapping efficiency is influenced by climatic conditions, with the wet season being more favorable for trapping than the dry season.
Article
Agronomy
Todd E. Shelly, Kevin R. Cloonan
Summary: Invasive tephritid fruit flies pose a significant threat to commercial fruit and vegetable production. Early detection is crucial, and male lures are an important component of trapping networks. This review aims to summarize data on the change in attractiveness of male lures during aging in the field, highlighting studies that relate trap captures to changes in residual content and release rate.
Article
Agronomy
M. F. Lombardo, S. Panebianco, A. Azzaro, G. Timpanaro, G. Polizzi, G. Cirvilleri
Summary: Colletotrichum and Alternaria species have become emerging fungal pathogens causing severe economic losses in citrus orchards in the Mediterranean area. The use of copper-based antimicrobials for disease management is increasingly problematic, and research for alternative formulations is encouraged. This study tested copper-alternative products on citrus orchards and found that they significantly reduced disease incidence and severity, often showing comparable or better efficacy than copper. The good efficacy of these products suggests their potential for sustainable and large-scale use in integrated and organic citriculture.
Article
Agronomy
Innocent L. Rakubu, Agil Katumanyane, Brett P. Hurley
Summary: This study investigated the host-foraging strategies of five EPN species in South Africa and found that four of them exhibited a positive response to the presence of the host and caused 100% mortality, while the other species had a lower infection rate.
Article
Agronomy
Yuli Dai, Lin Gan, Xiaofei Liu, Chengzhong Lan, Zhiqiang Li, Xiujuan Yang
Summary: This study reports the occurrence of leaf spot disease caused by Colletotrichum plurivorum on cowpea plants in Pingnan prefecture, Fujian Province, China. The pathogen was identified based on morphological features and gene sequencing. Pathogenicity tests confirmed that the isolates of C. plurivorum could infect healthy cowpea leaves and induce leaf spot symptoms.
Article
Agronomy
Wenqing Xu, Weikai Li
Summary: Crop pests and diseases have a significant impact on crop yield and food security. This paper proposes FRseNet, a model based on ResNet-50 and SENet, for recognizing various crop pests and diseases. Experimental results on a self-constructed dataset demonstrate the competitive performance of the model in recognizing 15 diseases and 21 medium insect pests.
Article
Agronomy
Hector Carcamo, Carolyn Herle, Timothy Schwinghamer, Samuel Robinson, Patty Reid, R. Keith Gabert, Tyler Wist, Breanne Tidemann, Alejandro C. Costamagna
Summary: This study updated the economic thresholds for Lygus spp., a major insect pest of canola in Canada, by integrating a large data set collected over 23 years. The results revealed that the economic injury level for Lygus was around 9-23 insects per 10 sweeps, while spraying a foliar insecticide was only necessary when Lygus catches exceeded 30 insects per 10 sweeps. Additionally, analysis of Precision Yield Data showed that at low abundances (under 17 insects per 10 sweeps), Lygus may potentially stimulate canola yield and do not require control action.
Article
Agronomy
Medetissi Adom, Ken O. Fening, Maxwell K. Billah, Pascal O. Aigbedion-Atalor, David D. Wilson
Summary: Chilli pepper is an important food and cash crop in Ghana, but its production and marketing are hindered by insect pests. This study evaluated the efficacy of five different biopesticides against major chilli pepper pests and found that Neemazal and Attack were more effective than the other three in controlling these pests.
Article
Agronomy
Fariba Ghaderi, Soraya Karami
Summary: This study identified Phytophthora species causing root and crown rot in the main sesame-producing regions of Iran. The most aggressive species was found to be P. nicotianae. Additionally, sesame cultivars with high resistance to P. nicotianae and P. megasperma were identified. This is the first report of P. megasperma infection in sesame worldwide.
Article
Agronomy
Caroline Izabel R. Sakuno, Fabricio Jose B. Francischini, Karen Missy A. Komada, Murilo Basso, Fangneng Huang
Summary: The giant borer, Telchin licus, is a significant pest of sugarcane in Central and South America, and traditional control methods are ineffective due to the larvae's hiding behavior. Recent research has shown that transgenic sugarcane expressing Bacillus thuringiensis proteins, originally developed to control another sugarcane pest, can also effectively control the giant borer.
Article
Agronomy
Lucas de Paulo Arcanjo, Poliana Silvestre Pereira, Juliana Lopes dos Santos, Kayo Heberth de Brito Reis, Allana Grecco Guedes, Damaris Rosa de Freitas, Mikaelison da Silva Lima, Mayara Cristina Lopes, Renato Almeida Sarmento, Marcelo Coutinho Picanco
Summary: This study developed a standardized sampling plan for scouting B. tabaci adults in tropical soybean fields and identified the appropriate sample unit and sampling technique. A total of 49 samples per field were required, and the sampling process lasted no more than 5 min per hectare with associated costs not exceeding US$ 0.74 per hectare.
Article
Agronomy
Vicente Bezerra Pontes Junior, Levi Andres Bonilla Rave, Adalin Moraes Cezar de Aguiar, Alessandro da Costa Lima, Ana Flavia Souza Laube, Leonardo D'Antonino, Antonio Alberto da Silva
Summary: This study aimed to investigate the influence of diuron's adsorption characteristics in soil on dose determination. The results showed that organic matter content was a key factor in determining diuron's sorption and toxicity to E. indica.
Article
Agronomy
Lu Xun, Emilio Gil
Summary: A novel methodology was proposed to analyze water-sensitive papers (WSPs) for evaluating spray quality. The segmentation of overlapping droplets based on concave point detection and ellipse fitting achieved high accuracy. A linear relationship between droplet density and coverage was observed, and simulated WSPs were generated for high coverage estimation. This approach allows for more accurate spray quality indicators from WSP collectors.