Article
Plant Sciences
Qian Li, Yu Cheng, Jia Fan, Julian Chen
Summary: In this study, we identified a metabolic relay gene, ilvA, involved in the isoleucine synthesis pathway between aphids and Buchnera. We showed that ilvA was highly expressed in the 2nd instar of the aphid and in the aphid bacteriocytes. Knocking down the expression of ilvA reduced aphid body weight and production, suggesting its importance in aphid growth and development.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agriculture, Multidisciplinary
Qian Li, Yu Fu, Xiaobei Liu, Jingxuan Sun, Maolin Hou, Yong Zhang, Julian Chen
Summary: Salivary proteins secreted by aphids, such as GroES, play a crucial role in regulating plant defense responses. The presence of GroES in wheat aphid saliva induces hydrogen peroxide accumulation, callose deposition, and activates the plant's defense pathways. This suggests that plants have evolved mechanisms to detect aphid attack through recognizing proteins derived from Buchnera aphidicola.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Plant Sciences
Xiao-Bin Shi, Shuo Yan, Chi Zhang, Li-Min Zheng, Zhan-Hong Zhang, Shu-E Sun, Yang Gao, Xin-Qiu Tan, De-Yong Zhang, Xu-Guo Zhou
Summary: The study found that CMV infection reduces the abundance of B. aphidicola in M. persicae, leading to a preference shift in aphids from infected plants to healthy plants. This shift is achieved by altering the specificity of plant volatiles emitted in response to aphids with different levels of B. aphidicola.
Article
Agronomy
Xinan Li, Yulin Sun, Xujun Tian, Chao Wang, Qian Li, Qiuchi Li, Saige Zhu, Chen Lan, Yunhui Zhang, Xiangrui Li, Ruifeng Ding, Xun Zhu
Summary: This study found that infection with SMLS enhances the fitness and feeding behavior of Sitobion miscanthi, which may explain why SMLS frequently infects field populations of this grain aphid in China.
PEST MANAGEMENT SCIENCE
(2023)
Article
Entomology
Qian Li, Jia Fan, Yu Chen, Maolin Hou, Julian Chen
Summary: Buchnera aphidicola plays a crucial role in aphid nutrition metabolism, while the gene ilvE acts as a bridge gene in the aphid genome, affecting vital life parameters and Val, Ile, and Leu production. Knocking down the ilvE gene using RNAi significantly impacts aphid survival and body weight.
ENTOMOLOGIA GENERALIS
(2023)
Article
Microbiology
Julie Perreau, Devki J. Patel, Hanna Anderson, Gerald P. Maeda, Katherine M. Elston, Jeffrey E. Barrick, Nancy A. Moran
Summary: Culturable strains of Serratia symbiotica, originally characterized as noncultured mutualistic symbionts of aphids, have been found to also have pathogenic properties in aphid hosts and can be maternally transmitted. This suggests a potential for these strains to evolve into beneficial symbionts in aphid hosts.
Article
Multidisciplinary Sciences
Shunta Yorimoto, Mitsuru Hattori, Maki Kondo, Shuji Shigenobu
Summary: This study reports a co-obligate symbiosis in the eusocial aphid, Ceratovacuna japonica, involving a novel Arsenophonus sp. symbiont and the common obligate endosymbiont Buchnera aphidicola. Both symbionts share anatomical and genomic properties similar to independently evolved multi-partner symbiotic systems. Additionally, symbiont populations and bacteriome morphology differ between reproductive and soldier castes.
Article
Microbiology
Chun-Yan Chang, Xiao-Wan Sun, Pan-Pan Tian, Ning-Hui Miao, Yu-Lin Zhang, Xiang-Dong Liu
Summary: Transmission, relative abundance, and role of Arsenophonus in cotton aphids are affected by host plants and environmental temperature. High temperature impedes transmission, while the amino acids and secondary metabolites in host plants influence the relative abundance. Arsenophonus provides a fitness benefit to aphids, dependent on specific host plants and concentrations of gossypol, a plant secondary metabolite.
ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Daej A. Arab, Nathan Lo
Summary: The evolutionary rate correlations between hosts and long-term symbionts may be a widespread phenomenon, as indicated by the highly significant correlation of molecular rates between the genomes of Buchnera and the mitochondrial genomes of their hosts.
JOURNAL OF MOLECULAR EVOLUTION
(2021)
Article
Biochemistry & Molecular Biology
Hengwu Ding, Jinming Gao, Jianke Yang, Sijia Zhang, Shiyun Han, Ran Yi, Yuanxin Ye, Xianzhao Kan
Summary: This study comprehensively analyzed the genomic characteristics, codon usage patterns, and phylogenetic implications of 103 Buchnera strains from 12 host subfamilies. The findings revealed consistent features among all strains, including small genome sizes, low GC contents, and gene losses. Strong strand compositional asymmetries were observed at the genome level, and these asymmetries were reflected in the codon usage preferences within chromosomal genes. The phylogenetic analyses based on Buchnera symbionts provided an alternative topology of Aphididae, confirming the paraphylies of Eriosomatinae and Macrosiphini.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Forestry
Nadia Azizpour, Sevil Nematollahi, Reza Khakvar, Manizheh Jamshidi, Mohammad Hossein Norouzi-Beirami
Summary: This study investigated Russian olive trees exhibiting witches'-broom symptoms in urban green areas in Tabriz, Iran. The disease was confirmed to be caused by phytoplasma, and a mixed infection with multiple phytoplasma species within the trees was revealed. Next-generation sequencing using the Illumina method was performed to analyze the microbial genomic content and assemble the whole genome of the causative pathogen(s). The analysis revealed diverse and unique compositions of prokaryotic and eukaryotic species within the infected plants.
Review
Microbiology
Tong Li, Yongjun Wei, Chenchen Zhao, Shaojian Li, Suxia Gao, Yuanchen Zhang, Yuqing Wu, Chuantao Lu
Summary: This article discusses the use of RNA interference (RNAi) techniques and symbiont-mediated RNAi (SMR) techniques to control aphid pests. It introduces the potential of facultative symbionts in aphid pest control, as well as their horizontal transmission routes and ecological functions. It also discusses the cultivation and genetic engineering methods for aphid facultative symbionts, as well as the current legislation and safety assessments of dsRNA-based pest control strategies.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Agronomy
Xueke Gao, Ruichang Niu, Xiangzhen Zhu, Li Wang, Jichao Ji, Lin Niu, Changcai Wu, Shuai Zhang, Junyu Luo, Jinjie Cui
Summary: This study characterized the bacterial microbiota of L. japonica wasps and monitored changes in the microbiota of their parasitized and nonparasitized aphid hosts over time. Parasitism was associated with an increase in abundance of Buchnera nutritional endosymbionts in aphid hosts, while the abundance of other facultative symbionts decreased. Functional analysis revealed differences in specific pathways in parasitized aphids. The findings suggest that the exchange of symbiotic microbes may play a role in the evolution and ecology of host-parasitoid interactions.
PEST MANAGEMENT SCIENCE
(2021)
Article
Entomology
Qian Liu, Hui Zhang, Lingda Zeng, Yuhua Yu, Xiaolan Lin, Xiaolei Huang
Summary: Pseudoregma bambucicola, a social aphid, has a low diversity microbiome with stable coexistence of Buchnera, Pectobacterium, and Wolbachia. Pectobacterium may assist in feeding on bamboo stems, while Wolbachia may be involved in reproductive mode regulation or nutritional support. Ant attendance increases evenness in aphid populations, but there is no significant seasonal difference in bacterial diversity among aphid populations.
Article
Microbiology
Francois Renoz, Jerome Ambroise, Bertrand Bearzatto, Samir Fakhour, Nicolas Parisot, Melanie Ribeiro Lopes, Jean-Luc Gala, Federica Calevro, Thierry Hance
Summary: This study sequenced and analyzed the genomes of two symbiotic bacteria associated with aphids. The results show that these bacteria complement each other metabolically for the biosynthesis of essential amino acids and vitamins, and exhibit different anatomical integration in the host aphids.
Article
Ecology
Cristina R. Machado-Assefh, Guadalupe Lopez-Isasmendi, W. Fred Tjallingii, Georg Jander, Adriana E. Alvarez
ARTHROPOD-PLANT INTERACTIONS
(2015)
Article
Ecology
Daniel A. Bastias, Andrea C. Ueno, Cristina R. Machado Assefh, Adriana E. Alvarez, Carolyn A. Young, Pedro E. Gundel
Article
Entomology
Adriana E. Alvarez, Viviana G. Broglia, Anahi M. Alberti D'Amato, Doret Wouters, Edwin van der Vossen, Elisa Garzo, W. Fred Tjallingii, Marcel Dicke, Ben Vosman
Article
Entomology
Adriana E. Alvarez, Anahi M. Alberti D'Amato, W. Fred Tjallingii, Marcel Dicke, Ben Vosman
Article
Entomology
Cristina R. Machado-Assefh, Alejandro F. Lucatti, Adriana E. Alvarez
JOURNAL OF INSECT SCIENCE
(2014)
Article
Microbiology
Guadalupe Lopez-Isasmendi, Adriana Elisabet Alvarez, Gabriela Petroselli, Rosa Erra-Balsells, Marcela Carina Audisio
MICROBIOLOGICAL RESEARCH
(2019)
Article
Agronomy
Cristina R. Machado-Assefh, Maria del M. Said-Adamo, Sabrina D. Cortez, Agustin I. Lopez Gialdi, Guadalupe Lopez Isasmendi, Jaime Ortego, Adriana E. Alvarez
Summary: In the areas adjacent to potato crops in Salta, Argentina, researchers found plants that could potentially serve as hosts for aphid vectors and/or reservoirs of PLRV and PVY. They identified 34 plant species and 27 aphid species, with 11 of the plant species reported as hosts for PLRV and/or PVY.
Article
Entomology
Adriana E. Alvarez, Lawrence R. Griffing
Summary: Before feeding on phloem, aphids puncture cortical parenchyma cells and ingest cytoplasm as a form of "cytoplasmic feeding". Using a combination of EPG and confocal fluorescence microscopy, it is observed that aphids repeatedly puncture parenchyma cells and ingest cytoplasm from Arabidopsis thaliana. This extended period of puncturing prior to phloem feeding allows the aphids to absorb and utilize the enriched nutrient content of parenchyma cytoplasm without dilution and excretion.
ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA
(2023)
Article
Entomology
Maria E. Brentassi, Cristina R. Machado-Assefh, Adriana E. Alvarez
AUSTRAL ENTOMOLOGY
(2019)