Article
Biochemistry & Molecular Biology
Quanqing Deng, Hao Liu, Qing Lu, Sunil S. Gangurde, Puxuan Du, Haifen Li, Shaoxiong Li, Haiyan Liu, Runfeng Wang, Lu Huang, Ronghua Chen, Chenggen Fan, Xuanqiang Liang, Xiaoping Chen, Yanbin Hong
Summary: Silicon (Si) has been shown to promote peanut growth and yield. However, its effects on peanut bacterial wilt (PBW) caused by Ralstonia solanacearum are unclear. This study conducted an in vitro experiment and found that Si treatment significantly reduced PBW severity, increased soil available Si, and changed the bacterial community and metabolite profiles in the rhizosphere. These findings provide a new theoretical basis for Si application in the prevention of PBW.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Agronomy
Hong Liu, Feifei Sun, Junwei Peng, Minchong Shen, Jiangang Li, Yuanhua Dong
Summary: Soil microbial communities play a crucial role in ecosystem functions, but understanding the complex nature of the microbial world and leveraging positive interactions for environmental benefits remains challenging. In this study, we investigated soil bacterial communities in healthy and diseased tomatoes and found that disease samples had higher abundance of a pathogen and lower bacterial diversity. Healthy tomato rhizosphere harbored more plant-beneficial microbes and had a more complicated co-occurrence network, suggesting better adaptability to soil-borne pathogen invasion. Community assembly analysis showed that the healthy rhizosphere communities were less phylogenetically clustered and mainly driven by dispersal limitation, while the diseased rhizosphere communities were primarily shaped by homogeneous selection. These findings highlight the importance of soil bacterial community composition and assembly in responding to soil-borne pathogen invasion.
Article
Biochemistry & Molecular Biology
Ansar Hussain, Liu Kaisheng, Ali Noman, Muhammad Furqan Ashraf, Mohammed Albaqami, Muhammad Ifnan Khan, Zhiqin Liu, Shuilin He
Summary: In this study, the functional role of CaASHH3 protein in plant immunity was characterized in pepper. It was found that CaASHH3 acts as a positive regulator in cell death and pepper immunity against bacterial pathogens, and its function is regulated by signals mediated by SA, JA, ET, and ABA.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Agronomy
Qiongyao Yang, Mingkui Zhang
Summary: The study found that the substitution of bio-organic fertilizers for chemical fertilizers has significant short-term effects on the soil environment in citrus orchards, improving soil properties and reshaping bacterial ecology. A 75% substitution ratio of bio-organic fertilizer shows promising results for fertilization practice in citrus orchard soils.
Article
Horticulture
Rachidatou Sikirou, Marie Epiphane Dossoumou, Judith Honfoga, Victor Afari-Sefa, Ramasamy Srinivasan, Mathews Paret, Wubetu Bihon
Summary: Bacterial wilt caused by Ralstonia solanacearum is a growing concern in amaranth production in Benin. Host resistance is identified as the most sustainable disease control measure. The study suggests that the UG-AMES13-2 variety from the World Vegetable Center shows high resistance to R. solanacearum and should be promoted for seed production to support farmers.
Article
Chemistry, Multidisciplinary
Wenlong Liang, Jingli Cheng, Jiadong Zhang, Qiuyu Xiong, Maojun Jin, Jinhao Zhao
Summary: By utilizing a core-shell nanocarrier that releases the bactericide berberine in an acidic environment, this study demonstrates an effective control of tomato bacterial wilt disease without negative impact on plant growth.
Article
Plant Sciences
Pau Sebastia, Roger de Pedro-Jove, Benoit Daubech, Anurag Kashyap, Nuria S. Coll, Marc Valls
Summary: This study systematically analysed the infection of R. solanacearum in S. dulcamara, showing that bittersweet plants exhibit partial resistance to bacterial wilt compared with susceptible hosts like tomatoes, especially at lower temperatures. The findings suggest that inherent resistance and perennial growth habits enable bittersweet plants to act as reservoirs for the pathogen.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Agriculture, Multidisciplinary
Keke Dang, Jinfeng Hou, Hong Liu, Junwei Peng, Yang Sun, Jiangang Li, Yuanhua Dong
Summary: In this study, the changes in rhizobacteria, endobacteria, and root exudates during the pathogenesis of bacterial wilt in ginger caused by Ralstonia solanacearum (Rs) were analyzed using high-throughput sequencing and gas chromatography-mass spectrometry (GC-MS). The results showed that Rs infection led to a 50.00% incidence of bacterial wilt in ginger and altered the composition of bacterial communities in both the endosphere and rhizosphere. Furthermore, the changes in rhizobacterial composition induced corresponding changes in endobacterial and root exudate compositions. The upregulated exudates inhibited ginger bacterial wilt, indicating that ginger produces antibacterial compounds as a defense mechanism against bacterial pathogens.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Environmental Sciences
Fei Liang, Yongkang Wen, Xiao Dong, Yiyao Wang, Guangyuan Pan, Fangying Jiang, Huaying Luo, Wenjun Jin, Jun Wang, He Song
Summary: When organic fertilizer partially substitutes chemical fertilizer, the nitrite oxidation activity decreases with the increasing proportion of organic fertilizer. The Nitrobacter-like nitrite-oxidizing bacteria are more sensitive and play a crucial role in responding to different proportions of organic fertilizer to chemical fertilizer.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Microbiology
Dhananjay Kumar Yadav, Venkatappa Devappa, Abhijeet Shankar Kashyap, Narendra Kumar, V. S. Rana, Kumari Sunita, Dinesh Singh
Summary: Chemical mutagenic agents and ultraviolet irradiation were used to enhance the antagonistic property of Bacillus amyloliquefaciens DSBA-11 against Ralstonia solanacearum UTT-25 for managing tomato wilt disease effectively. The derivative strain MHNO2-20, treated with nitrous acid, showed the highest inhibition to R. solanacearum UTT-25. GC/MS analysis detected 18 major compounds in MHNO2-20, with compound 3-isobutyl hexahydropyrrolo (1,2), pyrazine-1,4-dione being the most abundant. Bio-efficacy assessment revealed that MHNO2-20 had the highest control efficacy (88.75%) against bacterial wilt disease in tomato plants.
Article
Plant Sciences
Lanping Shi, Xia Li, Yahong Weng, Hanyang Cai, Kaisheng Liu, Baixue Xie, Hussain Ansar, Deyi Guan, Shuilin He, Zhiqin Liu
Summary: The study reveals that plant immunity and dehydration tolerance are coupled and regulated by the CaPti1-CaERF3 module in pepper plants, enhancing resistance against bacterial wilt caused by Ralstonia solanacearum.
Article
Microbiology
Kun Chen, Lihui Wang, Hua Chen, Chong Zhang, Shanshan Wang, Panpan Chu, Shaokang Li, Huiwen Fu, Tao Sun, Menghan Liu, Qiang Yang, Huasong Zou, Weijian Zhuang
Summary: The study presents the complete genome of a toxic Ralstonia solanacearum strain affecting peanuts, revealing unique genetic features and potential virulence mechanisms. Genetic distance among E. coli strains depends on geographic origin and genotypes associated with strain complexity. This research provides a theoretical foundation for future studies on the interactions between Ralstonia solanacearum and peanuts.
Article
Multidisciplinary Sciences
Dingxin Wen, Qingqing Guo, Wan Zhao, Yong Yang, Chunlei Yang, Jun Yu, Yun Hu
Summary: The study found that hydrogen sulfide can prevent tobacco bacterial wilt. The results showed that hydrogen sulfide can inhibit the growth of the bacteria, alter its cell morphology, inhibit biofilm formation and swarming motility, and reduce the population of bacteria invading tobacco roots.
SCIENTIFIC REPORTS
(2023)
Article
Biotechnology & Applied Microbiology
Qian Zhao, Jianmin Cao, Xianjie Cai, Jie Wang, Fanyu Kong, Dongkun Wang, Jing Wang
Summary: Volatile organic compounds (VOCs) produced by beneficial bacteria can inhibit the growth of plant-pathogenic microorganisms and have the potential to be used as biological agents in controlling plant diseases. In this study, the VOCs produced by an acid-tolerant strain, Pseudomonas protegens CLP-6, showed strong antagonistic activities against phytopathogens, especially Ralstonia solanacearum, under acidic conditions. These VOCs could be used as an environmentally-friendly microbial fumigant against bacterial wilt of tobacco and other Solanaceae crops in acidic soils.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Plant Sciences
Lei Yan, Haotian Jin, Ali Raza, Yang Huang, Deping Gu, Xiaoyun Zou
Summary: In this study, 174 WRKY genes were identified in cultivated peanuts, and their crucial role in plant disease resistance was revealed. The findings contribute to a better understanding of peanut resistance against R. solanacearum infection and the novel functions of the WRKY gene family.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Clinical Neurology
T. Abo-Shaban, S. S. Sharna, S. Hosie, C. Y. Q. Lee, G. K. Balasuriya, S. J. McKeown, A. E. Franks, E. L. Hill-Yardin
Summary: Individuals with neurodevelopmental conditions such as autism spectrum disorder often experience tissue inflammation and gastrointestinal dysfunction, and the gut-associated lymphoid tissue plays a crucial role in these conditions. The interaction between Peyer's patches and the enteric nervous system is important for regulating gastrointestinal function and influencing mood and behavior. Understanding the functions of analogous tissues such as caecal patches is also important. Researching these tissues is essential for understanding the underlying causes of inflammatory disorders and gastrointestinal dysfunction in neurodevelopmental conditions.
JOURNAL OF NEURAL TRANSMISSION
(2023)
Article
Soil Science
Yunyun Zheng, Xiaojuan Wang, Helen L. Hayden, Ashley Franks, Anya Shindler, Yuhong Liu, Gary J. Clark, Jian Jin, Caixian Tang
Summary: Understanding the influence of nitrogen fertilisation on the priming effect in soils is crucial for predicting carbon loss and its impact on climate. The effect of nitrogen addition on the priming effect varies among different soil types.
BIOLOGY AND FERTILITY OF SOILS
(2023)
Article
Parasitology
Sarah A. Knowler, Anya Shindler, Jennifer L. Wood, Asha Lakkavaram, Colleen J. Thomas, Tania F. de Koning-Ward, Elisa L. Hill-Yardin, Teresa G. Carvalho, Ashley E. Franks
Summary: Cerebral malaria is the most severe form of malaria and can have long-term neurological consequences. Research has shown the importance of the gut microbiome in brain health, but little is known about its role in malaria. In this study, mice infected with Plasmodium berghei ANKA parasites showed significant differences in bacterial communities compared to non-infected mice. The findings suggest that the gut microbiome is affected by the infection and could be a target for intervention strategies to reduce the severity of cerebral malaria.
PARASITOLOGY RESEARCH
(2023)
Article
Soil Science
Xueling Yang, Jie Cheng, Ashley E. Franks, Xiaowei Huang, Qi Yang, Zhongyi Cheng, Yuanhui Liu, Bin Ma, Jianming Xu, Yan He
Summary: The study investigated the relationship between soil functioning and microbial community diversity using dilution approach and nutrient supplementation. In a eutrophic environment, a decrease in microbial diversity delayed lindane degradation and methanogenesis, but exacerbated microbial respiration. Microbial co-occurrence networks became more stable with decreasing diversity, and were correlated with species richness and network complexity.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Editorial Material
Neurosciences
Elisa L. L. Hill-Yardin, Andreas M. M. Grabrucker, Ashley E. E. Franks
FRONTIERS IN NEUROSCIENCE
(2023)
Article
Entomology
Aimee C. McKinnon, Luke Collins, Jennifer L. Wood, Nick Murphy, Ashley E. Franks, Martin J. Steinbauer
Summary: This study aimed to monitor honey bee hives in the field using remote surveillance to quantify flights and assess the risk of pesticide exposure. The results showed that bee activity increased in almond orchards compared to bushland, and low levels of pesticide residues were detected in the collected pollen.
Article
Education & Educational Research
Laura Yvonne Bulk, Ashley Franks, Lindsay Stephens, Hilda Smith, Melanie Baljko, Nastaran Dadashi, Iris Epstein
Summary: Promoting health equity requires diversifying healthcare workforces. Disability, as a form of diversity, is increasing in the healthcare field. However, barriers in work integrated learning (WIL), such as placements in hospitals or clinics, still exist for Disabled students. This interdisciplinary research team explored the social processes involved in creating accessibility in WIL through in-depth interviews with placement coordinators, supervisors, access professionals, education leaders, and healthcare leaders from two hospitals and two universities in eastern Canada. Their analysis revealed four themes of invisible work that clinical and academic educators engage in to create access: putting in extra time, doing emotional labor, engaging in relational work, and navigating complexities.
ADVANCES IN HEALTH SCIENCES EDUCATION
(2023)
Article
Soil Science
Yunyun Zheng, Jian Jin, Xiaojuan Wang, Gary J. Clark, Ashley Franks, Caixian Tang
Summary: Nitrogen availability has different effects on the mineralization of soil organic matter depending on soil type and layer. This study investigated the priming effect of soil organic matter decomposition in response to nitrogen addition. The results showed that the priming effect was stronger in the mineral-associated organic matter (MAOM) fraction compared to the particulate organic matter (POM) fraction, and the abundance of bacteria, fungi, and functional genes increased more in the MAOM fraction. These findings suggest that nitrogen input may have a greater potential to stimulate the priming effect in soils with a higher proportion of POM with a greater C:N ratio.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Soil Science
Shalini Kunhikannan, Cassandra R. Stanton, Jayson Rose, Colleen J. Thomas, Ashley E. Franks, Sumana M. Neelambike, Sumana Kumar, Steve Petrovski, Anya E. Shindler
Summary: This study investigated the bacterial diversity and antimicrobial resistance profile of soil samples collected around a newly developed hospital and university precinct. The results showed that the diversity of soil bacteria was similar in both precincts, with the phylum Proteobacteria being the most prevalent. Cyanobacteria was more abundant in hospital sites closer to a sewage treatment plant. Bacterial diversity was significantly different between two hospital sites. Antibiotic sensitivity testing revealed low resistance in the soil isolates from both precincts. The presence of unidentified bacteria near the hospital precinct suggests the impact of human activities on soil microbial diversity, and the abundance of Proteobacteria and Cyanobacteria near the hospital premises is concerning due to the presence of immunocompromised individuals.
Article
Microbiology
Khandaker Rayhan Mahbub, Caroline Chenard, Steven Batinovic, Steve Petrovski, Federico M. Lauro, Md Hafizur Rahman, Mallavarapu Megharaj, Ashley E. Franks, Maurizio Labbate
Summary: This study compared the genomes of three metal-resistant bacteria isolated from mercury-contaminated soil. Diverse and novel mobile genetic elements (MGEs) were found, with evidence of lateral gene transfer (LGT) events shaping the genomic structure and heavy metal resistance. The strains Sphingobium sp SA2 and Sphingopyxis sp SE2 were resistant to multiple metals, while Pseudoxanthomonas sp SE1 showed resistance to mercury only. Whole genome sequencing revealed that the Sphingobium and Sphingopyxis strains contained multiple chromosomes and plasmids, while the Pseudoxanthomonas strain had one circular chromosome. Metal resistance genes were associated with various MGEs, including genomic islands (GIs), integrative conjugative elements (ICEs), transposons, insertion sequences (IS), recombinase in trio (RIT) elements, and group II introns. The study highlights the importance of LGT in the evolution of metal resistance in bacteria.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Immunology
Rachele Gore, Mitra Mohsenipour, Jennifer L. Wood, Gayathri K. Balasuriya, Elisa L. Hill-Yardin, Ashley E. Franks
Summary: This study investigated the effects of hyperimmune bovine colostrum on gut bacteria in healthy mice. The results showed that mice administered colostrum containing LPS antibodies had an increased abundance of potentially beneficial bacteria without disrupting the gut ecology. There were no differences in weight gain or organ weights between the colostrum-treated mice and the controls.
INFECTION AND IMMUNITY
(2023)
Article
Ecology
J. L. Wood, A. A. Malik, C. Greening, P. T. Green, M. McGeoch, A. E. Franks
Article
Multidisciplinary Sciences
Chalystha Yie Qin Lee, Gayathri K. Balasuriya, Madushani Herath, Ashley E. Franks, Elisa L. Hill-Yardin
Summary: Individuals with autism commonly have gastrointestinal illness, but the role of the appendix and cecum in autism-associated GI symptoms has not been investigated. Through studying mice with an autism-associated mutation, it was found that they had accelerated cecal motility, reduced cecal weight, impaired secretion, and neuro-immune alterations. These results suggest that the mutation disrupts the gut-brain axis and leads to GI dysfunction in autism.
SCIENTIFIC REPORTS
(2023)
Article
Biochemistry & Molecular Biology
Madushani Herath, Ellie Cho, Ulrika Marklund, Ashley E. Franks, Joel C. Bornstein, Elisa L. Hill-Yardin
Summary: Mutations in the Nlgn3 gene are associated with autism spectrum disorder (ASD) and gastrointestinal (GI) dysfunction. This study characterizes the expression of Nlgn3 in the enteric nervous system using RNA in situ hybridization and immunofluorescence. The results show that Nlgn3 mRNA is expressed in cholinergic and VIP-expressing submucosal neurons, nitrergic and calretinin-containing myenteric neurons, and glial cells. The autism-associated R451C mutation reduces Nlgn3 mRNA expression in cholinergic submucosal neurons and certain myenteric neurons and glial cells. These findings contribute to the understanding of the role of Nlgn3 in GI dysfunction in ASD.
Article
Biology
Shalini Kunhikannan, Colleen J. Thomas, M. N. Sumana, Ashley E. Franks, Sumana Kumar, S. Nagarathna, Steve Petrovski, Anya E. Shindler
Summary: This study examined the resistance profile of soil bacteria from a hospital and its affiliated university precinct in Mysore, India. The results showed that antibiotic resistant bacteria were present closer to the hospital setting, indicating the influence of antibiotic usage in hospitals on the dissemination of antibiotic resistance into hospital precinct soil.
BMC RESEARCH NOTES
(2023)
