Article
Biochemistry & Molecular Biology
Xiaofei Zhou, Xiaoyu Ling, Huijuan Guo, Keyan Zhu-Salzman, Feng Ge, Yucheng Sun
Summary: Studies show that Serratia-infected aphids have shorter developmental time and higher body weight when fed on detached leaves. Up-regulation of genes related to fatty acid biosynthesis and elongation in infected aphids leads to accumulation of specific fatty acids, impacting development and weight gain. Inhibiting fatty acid synthesis in infected aphids prolongs growth period and reduces body weight, while supplementation of specific fatty acids restores normal development.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Entomology
Mauricio Gonzalez Gonzalez, Jean Christophe Simon, Akiko Sugio, Arnaud Ameline, Anas Cherqui
Summary: This study evaluated the resistance of Pisum fulvum and five Pisum sativum genotypes to two biotypes of Acyrthosiphon pisum through measuring aphid body mass and analyzing aphid feeding behavior. The results showed variable resistance levels among the genotypes, with the resistance of Pisum genotypes to non-adapted A. pisum residing in mesophyll and phloem tissues, while the resistance variation of P. sativum to pea adapted aphids may be influenced by the quality of phloem sap.
Article
Biology
Yang Li, Shin-ichi Akimoto
Summary: The study shows that there is positive competition effect between different color clones of aphids in the colonies, with mixed colonies growing faster than clonal colonies. Yellow aphids outnumber green aphids when reproducing earlier, but green aphids overwhelm yellow aphids when reproduction starts simultaneously.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Physiology
Chunchun Li, Qian Sun, Yuping Gou, Kexin Zhang, Qiangyan Zhang, Jing-Jiang Zhou, Changzhong Liu
Summary: The study shows that elevated atmospheric CO2 levels have negative impacts on the development and nutrition status of the green pea aphid, including prolonging nymph duration, decreasing adult longevity and female fecundity, and increasing metabolic contents. Additionally, there is an interaction between CO2 levels and generational effects, leading to further implications for aphid development and reproduction over multiple generations.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Lei Liu, Bo Hong, Jiang -wen Wei, Yi-Ting Wu, Li-Wen Song, Sen-Shan Wang
Summary: The role of ABC transporter genes in tannic acid metabolism by pea aphid is investigated in this study. It is found that verapamil, an ABC transporter inhibitor, increases the mortality of tannic acid to pea aphid. A total of 54 putative ABC transporter genes are identified from the genome database of A. pisum. The study also reveals that ApABCG17 may be involved in the metabolism of tannic acid in pea aphid.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Entomology
Yaling Ma, Chunjie Li, James F. White
Summary: The study focused on the contact toxicity of aqueous extracts of endophyte-infected and endophyte-free plants of Achnatherum inebrians on pea aphids, showing that compounds in endophyte-containing plants may be used to control insects. Different growth periods of endophyte-infected plants had varying effects on pea aphid survival and growth, with extracts from plants at the seeding stage showing the greatest negative impact on aphids.
Article
Ecology
Corentin Sochard, Corentin Dupont, Jean-Christophe Simon, Yannick Outreman
Summary: Ecological specialization is common in animals, especially phytophagous insects, resulting from divergent selection on insect populations. Symbionts may influence insect foraging capacities, with potential consequences on dispersal and survival. However, the main influence of secondary symbionts is on the production of winged offspring rather than short-distance exploration and host plant selection.
Article
Entomology
Katarzyna Stec, Bozena Kordan, Beata Gabrys
Summary: Flavonoids have different effects on the feeding behavior of pea aphids, with apigenin, daidzein, and kaempferol reducing sap ingestion intensity, while genistein has no impact. These findings provide valuable insights for breeding aphid-resistant plant cultivars in a sustainable manner.
Article
Agriculture, Multidisciplinary
Huang Tian-yu, Zhang Rui-bin, Yang Lu-lu, Cao Song, Frederic Francis, Wang Bing, Wang Gui-rong
Summary: The study reveals the important role of the conserved Or23 clade in host plant detection in most aphid species, and shows that pea aphids mainly rely on their odorant receptors to discriminate among different leguminous plant hosts.
JOURNAL OF INTEGRATIVE AGRICULTURE
(2022)
Article
Entomology
Chen Luo, Maya Belghazi, Antonin Schmitz, Severine Lemauf, Nicolas Desneux, Jean-Christophe Simon, Marylene Poirie, Jean-Luc Gatti
Summary: This study reveals that facultative symbionts in the pea aphid can influence the activity of phenoloxidase, an important component of insect innate immunity. Different species of FS show variations in regulating PO activity, with some FS being able to interfere with transcription and translation processes, leading to a decrease in PO activity in the aphid.
Article
Agronomy
Shengwei Ye, Long Zhao, Yinyin Qi, Han Yang, Zilong Hu, Nan Hao, Yantao Li, Xiangrong Tian
Summary: This study identified azukisapogenol triterpenoid saponins from Oxytropis hirta as effective biopesticides for controlling aphids. These compounds exhibited significant aphicidal activities, including oral toxicity, deterrent effects, and aphid reproduction inhibition.
PEST MANAGEMENT SCIENCE
(2023)
Article
Entomology
Yan Shi, Tian-Yuan Liu, Bi-Yue Ding, Jinzhi Niu, Hong-Bo Jiang, Tong-Xian Liu, Jin-Jun Wang
Summary: This study identified the sequence of the CCAP precursor and its receptor in Acyrthosiphon pisum and found that ApCCAP, through the activation of ApCCAP-R, plays an essential role in regulating the process of nymph-adult ecdysis.
JOURNAL OF INSECT PHYSIOLOGY
(2022)
Article
Entomology
Muhammad Bilal Amir, Yan Shi, Hehe Cao, Muhammad Yasir Ali, Muhammad Afaq Ahmed, Guy Smagghe, Tong-Xian Liu
Summary: In this study, the short neuropeptide F and its receptor in the pea aphid were investigated. The silencing of the sNPF gene significantly reduced the reproduction of aphids. These findings are important for the design of control strategies using molecular biology approaches.
Article
Developmental Biology
Yu Bai, Xiao-Jin Pei, Ning Ban, Nan Chen, Su-Ning Liu, Sheng Li, Tong-Xian Liu
Summary: This study explores the molecular mechanisms of flight-muscle degeneration in insects, focusing on the parthenogenetic pea aphid. The researchers found that feeding and topical application of a juvenile hormone mimic enhanced tissue-specific juvenile hormone sensitivity and signaling, leading to flight-muscle degeneration. Nutritional signals and the tricarboxylic acid cycle were identified as important factors in this process.
Article
Multidisciplinary Sciences
Hawa Jahan, Mouhammad Shadi Khudr, Ali Arafeh, Reinmar Hager
Summary: Climatic changes, such as heatwaves, present unprecedented challenges for insects, affecting their reproductive strategies and energy metabolism. This laboratory study investigated the effects of a sub-lethal heatwave on the development and reproduction of the pea aphid. The heat exposure resulted in the production of deformed offspring and differential expression of heat shock protein genes, indicating a trade-off between maternal and offspring fitness.
Article
Infectious Diseases
Samia Elfekih, Suzanne Metcalfe, Tom K. Walsh, Tarnya E. Cox, Tanja Strive
Summary: The European rabbit is one of the most destructive invasive species in Australia, with viruses like MYXV and RHDV used for population management. Resistance to these viruses has been observed, highlighting the need for a better understanding of genetic resistance mechanisms. Through genotyping by sequencing, novel candidate genes involved in host-pathogen interactions were identified, offering insights into potential mechanisms of genetic resistance to RHDV virus for future studies.
TRANSBOUNDARY AND EMERGING DISEASES
(2022)
Review
Entomology
T. K. Walsh, D. G. Heckel, Yidong Wu, S. Downes, K. H. J. Gordon, J. G. Oakeshott
Summary: This article analyzes the differences in pest species' tendencies to develop insecticide resistance and explores the key factors influencing resistance selection intensity. The study found that host range, movement between alternate hosts, and area-wide, cross-pesticide management practices are important in reducing resistance selection intensity.
ANNUAL REVIEW OF ENTOMOLOGY
(2022)
Article
Environmental Sciences
Rohan M. Shah, Sarah Stephenson, Joseph Crosswell, Daniel Gorman, Katie E. Hillyer, Enzo A. Palombo, Oliver A. H. Jones, Stephen Cook, Levente Bodrossy, Jodie van de Kamp, Thomas K. Walsh, Andrew Bissett, Andrew D. L. Steven, David J. Beale
Summary: Vertical zonation within estuarine ecosystems has a strong impact on microbial diversity and function, while the horizontal patterns of microbial communities across an estuary have received less attention. This study investigates the environmental gradients created by the transition between dominant vegetation types in a tropical river system. The results reveal the habitat-specificity of microbial communities and metabolic pathways, as well as the high degree of metabolic redundancy in bacterial communities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Plant Sciences
Yoann Aigu, Stephanie Daval, Kevin Gazengel, Nathalie Marnet, Christine Lariagon, Anne Laperche, Fabrice Legeai, Maria J. Manzanares-Dauleux, Antoine Gravot
Summary: This study aimed to investigate the mechanisms by which nitrogen fertilization influences clubroot disease. The results showed that clubroot infection led to an increase in SA concentration and induction of SA gene expression, while nitrogen-driven resistance was independent of SA signaling, soluble carbohydrate, and amino acid concentrations. The low-nitrogen-driven resistance was associated with transcriptional regulation of specific genes, including NRT2 and NR genes.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Engineering, Environmental
Cameron W. M. Murphy, Greg B. Davis, John L. Rayner, Tom Walsh, Trevor P. Bastow, Adrian P. Butler, Geoffrey J. Puzon, Matthew J. Morgan
Summary: This study investigated the distribution of potential chemotactic and hydrocarbon degrading microbes across the water table of a legacy petroleum hydrocarbon site near Perth, Western Australia. The results showed that naphthalene contamination significantly increased the occurrence of potential CD microbes, potentially enhancing natural source zone depletion. Further exploration and definition of this link are crucial for accurately estimating the biodegradation of petroleum hydrocarbon fuels.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Genetics & Heredity
Camille Meslin, Pauline Mainet, Nicolas Montagne, Stephanie Robin, Fabrice Legeai, Anthony Bretaudeau, J. Spencer Johnston, Fotini Koutroumpa, Emma Persyn, Christelle Monsempes, Marie-Christine Francois, Emmanuelle Jacquin-Joly
Summary: Bitter taste is an important defense mechanism against poisonous foods in animals. This study reveals that the expansion of gustatory receptor genes in Spodoptera spp. may be mediated by transposable elements, specifically SINE transposons. Positive selection within the gustatory receptor gene family is cryptic. This research provides valuable genomic information on the mechanisms of gustatory receptor expansions in polyphagous insect species.
G3-GENES GENOMES GENETICS
(2022)
Article
Biochemistry & Molecular Biology
Avinash V. Karpe, Melanie L. Hutton, Steven J. Mileto, Meagan L. James, Chris Evans, Amol B. Ghodke, Rohan M. Shah, Suzanne S. Metcalfe, Jian-Wei Liu, Tom Walsh, Dena Lyras, Enzo A. Palombo, David J. Beale
Summary: This study investigated the impact of giardiasis on the host's body and the effects of changes in gut microbiota on metabolic pathways. The results revealed significant alterations in energy and oxidative stress pathways in the gut and liver during giardiasis and identified changes in bacterial populations. These findings contribute to the discovery of new biomarkers and the development of precision health solutions for giardiasis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Ecology
Joshua A. Thia, Pasi K. Korhonen, Neil D. Young, Robin B. Gasser, Paul A. Umina, Qiong Yang, Owain Edwards, Tom Walsh, Ary A. Hoffmann
Summary: Genomic data provides insights into pest management, resistance evolution, pest invasions, and population dynamics. The first reference genome for the redlegged earth mite, Halotydeus destructor, was assembled to study pesticide adaptation and population demographics using whole-genome pool-seq data. Genetic mutations have been identified that contribute to organophosphate and pyrethroid resistance. Population genomic analyses reveal regional structuring in H. destructor populations, while demographic analyses indicate reduced genetic diversity and smaller effective population sizes in eastern populations. These findings have important implications for genetic markers, understanding resistance mechanisms, and predictive modeling of resistance evolution and spread.
JOURNAL OF EVOLUTIONARY BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Jeremy Gauthier, Joana Meier, Fabrice Legeai, Melanie McClure, Annabel Whibley, Anthony Bretaudeau, Helene Boulain, Hugues Parrinello, Sam T. T. Mugford, Richard Durbin, Chenxi Zhou, Shane McCarthy, Christopher W. W. Wheat, Florence Piron-Prunier, Christelle Monsempes, Marie-Christine Francois, Paul Jay, Camille Nous, Emma Persyn, Emmanuelle Jacquin-Joly, Camille Meslin, Nicolas Montagne, Claire Lemaitre, Marianne Elias
Summary: This study generated high-quality genome assemblies for two Melinaea species and a draft genome for Ithomia salapia. Comparative genomic analysis revealed independent gene expansions in ithomiines and gustatory receptor genes. These findings contribute to understanding the mechanisms of adaptation in butterflies.
MOLECULAR ECOLOGY RESOURCES
(2023)
Article
Agronomy
Jamie Hopkinson, Jacob Balzer, Cao Fang, Tom Walsh
Summary: Bemisia tabaci, a significant agricultural pest in Australia, has developed resistance to pyriproxyfen, spirotetramat, and buprofezin. The resistance levels vary among populations and regions. The addition of buprofezin provides a new option for managing whitefly pests and strengthening resistance management strategies.
PEST MANAGEMENT SCIENCE
(2023)
Article
Multidisciplinary Sciences
Rahul Rane, Thomas K. Walsh, Pauline Lenancker, Andrew Gock, Thi Hang Dao, Van Liem Nguyen, Thein Nyunt Khin, Divina Amalin, Khonesavanh Chittarath, Muhammad Faheem, Sivapragasam Annamalai, Sathis Sri Thanarajoo, Y. Andi Trisyono, Sathya Khay, Juil Kim, Lastus Kuniata, Kevin Powell, Andrew Kalyebi, Michael H. Otim, Kiwoong Nam, Emmanuelle d'Alencon, Karl H. J. Gordon, Wee Tek Tay
Summary: The fall armyworm, a notorious agricultural pest, has rapidly spread from West Africa to East Asia since 2016. Genome analysis revealed that the majority of populations in this study were hybrids of C- and R-strains. The spread of the fall armyworm was facilitated by international trade of live/fresh plants and plant products, as well as the establishment of "bridgehead populations" in neighboring countries.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Sudeeptha Yainna, Wee Tek Tay, Karine Durand, Estelle Fiteni, Frederique Hilliou, Fabrice Legeai, Anne-Laure Clamens, Sylvie Gimenez, R. Asokan, C. M. Kalleshwaraswamy, Sharanabasappa S. Deshmukh, Robert L. Meagher, Carlos A. Blanco, Pierre Silvie, Thierry Brevault, Anicet Dassou, Gael J. Kergoat, Thomas Walsh, Karl Gordon, Nicolas Negre, Emmanuelle D'Alencon, Kiwoong Nam
Summary: The fall armyworm, a major agricultural pest insect, has spread globally and poses a threat to corn production. Genetic analysis reveals that invasive populations of the fall armyworm originated from the corn strain and exhibit adaptive evolution in detoxification, chemosensory, and digestion genes.
SCIENTIFIC REPORTS
(2022)
Article
Microbiology
Nonthakorn (Beatrice) Apirajkamol, Timothy Michael Hogarty, Bishwo Mainali, Phillip Warren Taylor, Thomas Kieran Walsh, Wee Tek Tay
Summary: The development of pest management strategies is crucial for protecting crops from the highly invasive pest Spodoptera frugiperda. This study discovered two highly virulent Beauveria fungal isolates that could serve as novel biological control tools against this pest.
ARCHIVES OF MICROBIOLOGY
(2023)
Article
Ecology
Estelle Fiteni, Karine Durand, Sylvie Gimenez, Robert L. Meagher, Fabrice Legeai, Gael J. Kergoat, Nicolas Negre, Emmanuelle d'Alencon, Kiwoong Nam
Summary: The population structure of fall armyworm (FAW) is dominated by the genetic differentiation between corn and rice strains, which involves divergent selection at least three loci including a locus potentially causing reproductive isolation. These results suggest that host-plant speciation is a driver of incipient speciation in FAW.
BMC ECOLOGY AND EVOLUTION
(2022)
Article
Environmental Sciences
Natalia Malinowski, Sergio Domingos, Jason Wylie, Matthew J. Morgan, Suzanne Metcalfe, Tom Walsh, Warish Ahmed, Anna H. Kaksonen, Geoffrey J. Puzon
Summary: This study investigated the presence and abundance of free-living amoebae (FLA) and amoeba-resistant bacteria (ARB) in chlorinated drinking water storage tanks in Western Australia. FLA and ARB were detected in tanks with free chlorine residuals above 0.5 mg/L, indicating the need for continued surveillance and risk management.