Article
Agronomy
Xiao-Qiang Liu, Hong-Bo Jiang, Jia-Yao Fan, Tian-Yuan Liu, Li-Wei Meng, Yi Liu, Hai-Zhong Yu, Wei Dou, Jin-Jun Wang
Summary: Diaphorina citri showed dose-dependent EAG responses to 12 host plant volatiles, with four compounds eliciting significant attraction to adults; expression profiles of nine OBP genes showed significant upregulation or downregulation; recombinant protein DcitOBP7 exhibited high in vitro binding affinities to certain odorants and RNAi-suppression of DcitOBP7 resulted in reduced EAG activity and behavioral responses in D. citri.
PEST MANAGEMENT SCIENCE
(2021)
Article
Entomology
Kellee Britt, Samantha Gebben, Amit Levy, Diann Achor, Peggy Sieburth, Kristian Stevens, Maher Al Rwahnih, Ozgur Batuman
Summary: This study explores the widespread and diverse presence of citrus tristeza virus (CTV) in Florida ACPs using high-throughput sequencing, suggesting the potential use of ACP as a tool to monitor CTV presence in Florida citrus groves.
Article
Agronomy
Yan-Jun Guo, Yi-Han Li, Zheng-Qin Su, Pei-Ping Xu, Bao-Li Qiu, Qian-Hua Ji, Muhammad Musa Khan
Summary: This study investigates the level of Huanglongbing in Guangdong province, finding that Yunfu has the highest infestation rate followed by Chaozhou, Jiangmen, and Foshan, while Zhongshan and Maoming have the lowest rates. Results also show that the acquisition of the pathogen by D. citri is directly proportional to feeding duration, with higher acquisition efficiency at night compared to during the daytime.
Article
Biochemistry & Molecular Biology
Muhammad Qasim, Huamei Xiao, Kang He, Mohamed A. A. Omar, Dilbar Hussain, Ali Noman, Muhammad Rizwan, Khalid Ali Khan, Omar Mahmoud Al-zoubi, Sulaiman Ali Alharbi, Liande Wang, Fei Li
Summary: The study found that fungal attack disrupted the defense system of Asian citrus psyllid, leading to significant changes in enzyme activity and related gene expression. Post-fungal treatment, the resistance of Asian citrus psyllid populations decreased, possibly due to fungal interference with the CYP4 and SOD systems.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2021)
Article
Entomology
Rui-Xu Jiang, Feng Shang, Hong-Bo Jiang, Wei Dou, Tomislav Cernava, Jin-Jun Wang
Summary: This study analyzed how temperature and gender influence the bacterial communities in the Asian citrus psyllid, a major vector for citrus disease. The dominant phylum was Proteobacteria, with Profftella and Wolbachia being the main taxa. The study found differences in symbiont abundance between males and females, with Profftella more prevalent in females under high temperatures and Wolbachia more abundant in males. These results offer insights into the adaptation of D. citri and its symbionts to environmental stresses.
Article
Entomology
Mamoudou Setamou, Aleena Tarshis Moreno, Joseph M. Patt
Summary: In citriculture landscapes in the U.S., residential citrus trees serve as a source habitat of Diaphorina citri, which constantly exchanges adults with commercial groves. Establishing new groves away from residential areas and implementing pest management practices in residential habitats can reduce the risks of D. citri colonization in citrus groves.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2022)
Article
Entomology
Lixue Meng, Changxiu Xia, Zhixiong Jin, Hongyu Zhang
Summary: Host plants have a significant impact on the gut microbial community of Diaphorina citri, the vector of the Huanglongbing pathogen. The dominant phylum in the gut microbiota of D. citri is Proteobacteria. The abundance of specific bacterial genera varies among different host plant groups.
Review
Microbiology
Orquidea Perez-Gonzalez, Ricardo Gomez-Flores, Patricia Tamez-Guerra
Summary: This review summarizes the studies on Hirsutella citriformis Speare, with a focus on its potential as a control agent for citrus crop pests and the Asian citrus psyllid, which causes the Huanglongbing disease. The review highlights the limited characterization of H. citriformis strains and the parasitization efficacy under suitable environmental conditions. However, there is still limited understanding of its mode of action and biocontrol potential.
Article
Entomology
Jing Gao, Tonglai Tao, Steven P. Arthurs, Mubasher Hussain, Fengxian Ye, Runqian Mao
Summary: The Asian citrus psyllid is an important citrus pest that transmits the bacterium causing citrus Huanglongbing. The saliva of two citrus aphid species, Aphis spiraecola and Aphis citricidus, has contrasting effects on the feeding behavior and plant defense response of the Asian citrus psyllid. The infiltration of A. spiraecola saliva disrupts psyllid feeding behavior and activates plant defense pathways, while A. citricidus saliva promotes psyllid feeding and suppresses defense pathways.
Article
Microbiology
Yasser E. Ibrahim, Jorge R. Paredes-Montero, Mohammed A. Al-Saleh, Arya Widyawan, Ruifeng He, Mahmoud H. El Komy, Hathal M. Al Dhafer, Noel Kitchen, David R. Gang, Judith K. Brown
Summary: This study investigated the citrus greening disease in Saudi Arabia and found that it is caused by the Asian citrus psyllid transmitting the Candidatus Liberibacter asiaticus. The study also analyzed the genetic makeup of the psyllids and identified two major lineages of the pathogen.
Article
Immunology
Da Ou, Jun-Hong Qiu, Zheng-Qin Su, Lei Wang, Bao-Li Qiu
Summary: This study investigated the infection status of Wolbachia in five species of psyllid and found that the infection rates were 100% for both Asian citrus psyllid and longan psyllid. The phylogenetic analysis revealed that these Wolbachia lines belong to the Con subgroup of Wolbachia supergroup B. The localization pattern of Wolbachia was different in different tissues of the psyllids. These findings contribute to our understanding of the coevolution of Wolbachia and its psyllid hosts, and provide new insights for the development of control strategies for these psyllids.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2023)
Article
Plant Sciences
Minliang Bin, Xinxiang Peng, Ganjun Yi, Xinxin Zhang
Summary: This study identified a gene, CsTPS21, in citrus plants, which encodes a monoterpene synthase that synthesizes β-ocimene as a repellent against Asian citrus psyllid. Overexpression of CsTPS21 increased the synthesis of β-ocimene in citrus and enhanced resistance against insect infestation. These findings provide a basis for using β-ocimene and CsTPS21 to manage Huanglongbing caused by Asian citrus psyllid infestation.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Entomology
Shuang Lei, Shi-Jiang Yu, Qi Pan, Li-Li Ding, Si-Chen Li, Lu-Yan Cheng, Shu-Qi Wang, Bing-Hai Lou, Jun He, Cui-Yun Lei, Lin Cong, Hao-Qiang Liu, Xue-Feng Wang, Chun Ran
Summary: In this study, a high-quality chromosome-level genome of Diaphorina citri, a global citrus pest, was successfully generated using DNBSEQ(TM), Oxford Nanopore Technologies, and Hi-C technologies. The genome size was determined to be 523.78 Mb and 24,048 protein-coding genes were predicted. The study also revealed the XO type sex chromosome system of D. citri and its closest relative, Pachypsylla venusta. The findings provide valuable information for the effective management of D. citri.
Article
Mathematics, Interdisciplinary Applications
Maria Bibi, Muhammad Kashif Hanif, Muhammad Umer Sarwar, Muhammad Irfan Khan, Shouket Zaman Khan, Casper Shikali Shivachi, Asad Anees
Summary: Multiple prediction models were developed to monitor the population dynamics of Asian citrus psyllid in citrus-growing regions of Pakistan, using regression algorithms of machine learning. A deep neural network-based prediction model resulted in the least root mean squared error values when predicting egg, nymph, and adult populations of the pest.
Article
Horticulture
ZhiHao Dong, XiaoDong Liu, Anoop Kumar Srivastava, QiLing Tan, Wei Low, Xiang Yan, SongWei Wu, XueCheng Sun, ChengXiao Hu
Summary: The Asian citrus psyllid is the main vector of Huanglongbing, and nutrient enhancement has been reported as an optional method to alleviate the disease. However, limited studies have focused on the interactions between citrus plants and psyllids under nutrient enhancement. This study aimed to investigate psyllid feeding and psyllid feeding under nutrient enhancement. The results showed that psyllid feeding up-regulated the amino acid metabolism, attracting more adult insects. Psyllid feeding also caused changes in leaf tissue composition, which affected the feeding efficiency of the psyllid. Furthermore, foliar supply of nutrients inhibited psyllid growth and recognition ability, reducing feeding efficiency. Compared to pesticide treatment, the combination of pesticide and nutrients showed a higher reduction rate in psyllid population. This study provides insights into the behavior of psyllids under different feeding environments, which is important for controlling the spread of Huanglongbing.
SCIENTIA HORTICULTURAE
(2023)
Article
Biochemistry & Molecular Biology
Cassie Sims, David M. Withall, Neil Oldham, Robert Stockman, Michael Birkett
Summary: This study employed computational methods to predict models for aphid ORs and investigated their binding interactions with aphid pheromones and other semiochemicals. The results suggest that specific binding sites may be more critical than kinetic data in understanding the olfactory activity of ligands and ORs.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2023)
Review
Fisheries
Nicholas A. Robinson, Diego Robledo, Lene Sveen, Rose Ruiz Daniels, Aleksei Krasnov, Andrew Coates, Ye Hwa Jin, Luke T. Barrett, Marie Lillehammer, Anne H. Kettunen, Ben L. Phillips, Tim Dempster, Andrea Doeschl-Wilson, Francisca Samsing, Gareth Difford, Sarah Salisbury, Bjarne Gjerde, John-Erik Haugen, Erik Burgerhout, Binyam S. Dagnachew, Dominic Kurian, Mark D. Fast, Morten Rye, Marcela Salazar, James E. Bron, Sean J. Monaghan, Celeste Jacq, Mike Birkett, Howard I. Browman, Anne Berit Skiftesvik, David M. Fields, Erik Selander, Samantha Bui, Anna Sonesson, Stanko Skugor, Tone-Kari Knutsdatter Ostbye, Ross D. Houston
Summary: Disease and parasitism pose significant challenges to global aquaculture, and genetic technologies offer potential solutions. Understanding genetic mechanisms, developing tools for boosting host resistance, and applying genetic technologies can improve disease resistance and transform aquaculture.
REVIEWS IN AQUACULTURE
(2023)
Article
Ecology
M. Borges, M. F. F. Michereff, R. A. Laumann, G. T. Santana, B. S. Castro, C. C. Silva, M. C. Blassioli-Moraes
Summary: This study evaluated the potential of C. cajan plants as trap crops for D. melacanthus. The results showed that D. melacanthus females prefer to oviposit on C. cajan pods and are attracted by volatiles emitted by reproductive C. cajan plants. In addition, the offspring of D. melacanthus cannot survive on C. cajan pods.
ARTHROPOD-PLANT INTERACTIONS
(2023)
Article
Ecology
Pasquale Cascone, Jozsef Vuts, Michael A. Birkett, Sarah Dewhirst, Sergio Rasmann, John A. Pickett, Emilio Guerrieri
Summary: This study found that plants can communicate belowground by releasing the non-protein amino acid L-DOPA, which triggers the production of volatile organic compounds in neighboring plants. The study also discovered that healthy plants exposed to L-DOPA become highly attractive to aphid parasitoids, resembling infested plants. Therefore, L-DOPA acts as both a brain neurotransmitter precursor and an immune enhancer in plants.
Article
Entomology
Izabela N. Nascimento, Mirian F. F. Michereff, Walter E. Pereira, Paulino R. Villas-Boas, Marcos Rafael Gusmao, John Caufield, Raul A. Laumann, Miguel Borges, Maria Carolina Blassioli-Moraes
Summary: Plants respond to herbivore injury by emitting specific volatiles that attract the enemies of herbivores. This study evaluated whether maize plants can recognize damage from a stink bug and found that while the stink bug does not use plant volatiles as host location cues, feeding by the stink bug activates maize indirect defense, inducing emission of attractant volatiles for the herbivore's enemy.
ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA
(2023)
Article
Agriculture, Multidisciplinary
Lincon Rafael da Silva, Leonardo Luis de Barros Rodrigues, Amanda Silva Botelho, Bruna Sartorio de Castro, Paulo Henrique Pereira Costa Muniz, Maria Carolina Blassioli Moraes, Sueli Correa Marques de Mello
Summary: The aim of this study was to evaluate the effect of volatile organic compounds (VOCs) emitted by Trichoderma azevedoi CEN1241 in different growth periods on the severity of white mold in common bean. Chemical analysis revealed that T. azevedoi CEN1241 produced 37 VOCs, which were shown to be related to the ability of the biocontrol agent to suppress Sclerotinia sclerotiorum. The results demonstrated that T. azevedoi CEN1241 VOCs reduced the size of S. sclerotiorum lesions in vitro and decreased disease severity in a greenhouse, indicating the potential of volatile compounds as a control strategy for white mold in bean plants.
PLANT PATHOLOGY JOURNAL
(2023)
Article
Entomology
Jennifer Oberger Ferreira, Christian Sherley Araujo da Silva Torres, Enggel Beatriz Silva Carmo, Gessica dos Santos Silva, Raul Alberto Laumann, Miguel Borges, Maria Carolina Blassioli Moraes
Summary: This study evaluated the effects of footprints of Tenuisvalvae notata and Cryptolaemus montrouzieri lady beetles on their own and each other's foraging behavior and predatory potential. The results showed that both species can recognize each other's footprints and have different reactions to them. Chemical analysis revealed that the composition of footprint extracts is species- and sex-specific. This is the first report on the effects of footprints on the behavior of these species.
ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA
(2023)
Article
Agronomy
Liesbet Wilberts, Jozsef Vuts, John C. Caulfield, Gareth Thomas, David M. Withall, Felix Wackers, Michael A. Birkett, Hans Jacquemyn, Bart Lievens
Summary: This study found that inoculating sweet pepper plants with entomopathogenic fungus can alter the behavior of parasitoid wasps, accelerating their localization of aphids and thus improving biocontrol efficacy.
PEST MANAGEMENT SCIENCE
(2023)
Article
Infectious Diseases
Oswald Matika, Sarah Foster, Naftaly Githaka, Gad Owido, Collins Ngetich, Charles Mwendia, Helen Brown, John Caulfield, Kellie Watson, Appolinaire Djikeng, Michael Birkett
Summary: Ticks and tick-borne diseases pose a significant threat to livestock production, with a large number of cattle at risk. Chemical control is expensive and tick resistance to acaricides is increasing. This study investigates the use of host volatile semiochemicals as a potential phenotype for tick resistance, which could be used in selective breeding programs.
TICKS AND TICK-BORNE DISEASES
(2023)
Article
Chemistry, Multidisciplinary
Jonathan Osei-Owusu, William K. Heve, Owusu Fordjour Aidoo, Maxwell Jnr Opoku, Joseph Apau, Kodwo Ninsin Dadzie, Bright Yaw Vigbedor, Kwaafo Akoto Awuah-Mensah, Margaret Appiah, Akwasi Acheampong, Michael Birkett, Antony Hooper
Summary: This study aimed to compare the repellency potential of essential oils and headspace volatiles from different plants against African malaria mosquitoes. The results showed that both the essential oils and headspace volatiles from Ocimum tenuiflorum achieved the longest repellency time, and unique chemical constituents were found in its headspace volatiles. This research provides a foundation for developing effective repellents against malaria mosquitoes.
JOURNAL OF CHEMISTRY
(2023)