Article
Biochemistry & Molecular Biology
Kaihong Chen, Yanhui Guan, Ronghua Hu, Xiaodong Cui, Qiongguang Liu
Summary: This study explores the potential of the LysP2110-HolP2110 system as a sustainable alternative for controlling bacterial wilt disease caused by Ralstonia solanacearum. The findings suggest that LysP2110 has broad-spectrum antibacterial activity and requires HolP2110 for efficient bacterial lysis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
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
Ecology
Mei Li, Thomas Pommier, Yue Yin, Jianing Wang, Shaohua Gu, Alexandre Jousset, Joost Keuskamp, Honggui Wang, Zhong Wei, Yangchun Xu, Qirong Shen, George A. Kowalchuk
Summary: The rhizosphere microbiome plays a crucial role in defending against soilborne pathogens, and inhibiting the growth of pathogen helpers may be effective in reducing pathogen densities. This approach could potentially become a sustainable strategy for pathogen control.
Article
Plant Sciences
Huixiu Li, Ning Wang, Jia Ding, Yingjie Liu, Xiaoyan Ding, Yuquan Wei, Ji Li, Guo-chun Ding
Summary: The properties of plant rhizosphere, including bacterial richness and evenness, differ between different root parts and between suppressive and non-suppressive soils. The spatial distribution of bacterial taxa and antagonists in the rhizosphere of pepper provides important insights into microbial ecology.
FRONTIERS IN PLANT SCIENCE
(2022)
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
Plant Sciences
Camilo H. Parada-Rojas, Lina M. Quesada-Ocampo
Summary: Phytophthora capsici epidemics are driven by warm temperatures and wet conditions. The population structure of P. capsici is influenced by host crop, geographical origin, fungicide sensitivity, and mating type. Understanding the population structure is important for managing P. capsici in the field. Our study identified different genetic clusters and found some correspondence with host and geographical distribution. We also discovered stratification in fluopicolide sensitivity and nonrandom mating in North Carolina populations.
Review
Plant Sciences
Sampurna Kashyap, Indrani Sharma, Bhaskar Dowarah, Ramen Barman, Sarvajeet Singh Gill, Niraj Agarwala
Summary: Plant and soil-associated microbiome play a crucial role in conferring tolerance to bacterial wilt disease in plants. Ralstonia solanacearum (RS), the causative agent of bacterial wilt, colonizes the xylem vessels and restricts water supply, leading to wilting. This review highlights the dynamics of microbiome associated with bacterial wilt disease and provides an update on microbial and non-microbial approaches utilized for disease control in crop plants.
Article
Plant Sciences
Timothy B. Siegenthaler, Zachariah R. Hansen
Summary: Phytophthora blight caused by Phytophthora capsici is a destructive disease affecting vegetable production globally. Fungicides are commonly used for control, but resistance has been observed in Tennessee, particularly towards fluopicolide and cyazofamid. This study highlights the widespread fungicide resistance in P. capsici and its implications for disease management.
Article
Plant Sciences
Nayoung Ro, Mesfin Haile, Onsook Hur, Bora Geum, Juhee Rhee, Aejin Hwang, Bitsam Kim, Jeaeun Lee, Bum-Soo Hahn, Jundae Lee, Byoung-Cheorl Kang
Summary: The resistance of pepper accessions to Phytophthora blight was evaluated and SNP markers associated with resistance were identified through a genome-wide association study. One of the SNP markers was converted into a high-resolution melting marker, and another marker was used for validation and comparison. These markers can accurately predict the Phytophthora blight resistance of pepper genetic resources.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Microbiology
Hongkai Xia, Yanxia Huang, Ruoyu Wu, Xin Tang, Jun Cai, Shun-xiang Li, Lin Jiang, Dousheng Wu
Summary: In this study, a library of 100 plant-derived compounds was screened for their antibacterial activity against R. solanacearum. Twelve compounds, including harmine, harmine hydrochloride, citral, vanillin, and vincamine, showed significant inhibition of bacterial growth and biofilm formation. Especially, harmine effectively reduced bacterial wilt disease development in tobacco and tomato plants.
FRONTIERS IN MICROBIOLOGY
(2023)
Review
Microbiology
Kenji Kai
Summary: Ralstonia solanacearum species complex (RSSC) strains are devastating plant pathogens distributed worldwide. The primary cell density-dependent gene expression system in RSSC strains is phc quorum sensing (QS), which regulates the expression of about 30% of all genes. The specificity in generating and receiving its QS signal, but their signaling pathways might not differ significantly. This review discusses the genetic and biochemical factors involved in QS signal input, the regulatory network, and the interactions with soil fungi.
ANNUAL REVIEW OF MICROBIOLOGY
(2023)
Article
Microbiology
Leo Gerlin, Antoine Escourrou, Cedric Cassan, Felicia Maviane Macia, Nemo Peeters, Stephane Genin, Caroline Baroukh
Summary: The plant pathogen Ralstonia solanacearum proliferates rapidly in xylem vessels, leading to plant death at a tipping point in bacterial wilt dynamics. Metabolic and physiological changes during infection are similar to drought stress. Glutamine is identified as the preferred substrate for R. solanacearum during colonization.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Yan Li, Yun-fei Zeng, Zi-yi Wang, Yan Fan, Xue Yang, Zhaoguo Wang, Shuai Yu, Qiuxia Pang, Ao-cheng Cao
Summary: The study confirmed the hypothesis that DEO affects the morphology and physiology of R. solanacearum cells through physiological analyses and TEM observations. Specifically, DEO treatment increased glycan and phosphorus metabolism, electric conductivity, intracellular ROS and MDA levels, while inhibiting the activities of antioxidant enzymes. TEM analysis showed early-stage cell shrinkage, intermediate-stage cytoplasmic damage, and final-stage cell disruption. The data suggest that DEO could be a potential alternative antibacterial treatment in the future.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2021)
Article
Plant Sciences
Peng Li, Xiulan Cao, Liwen Zhang, Mingfa Lv, Lian-Hui Zhang
Summary: This study demonstrated the important role of ralsolamycin in the crosstalk between R. solanacearum and fungi. Ralsolamycin biosynthesis is regulated by multiple factors, and the transcription factors PhcA and PhcR were found to bind to the promoter of the rmy operon and modulate ralsolamycin production in opposite ways.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Microbiology
Ruimei Geng, Lirui Cheng, Changdai Cao, Zhengwen Liu, Dan Liu, Zhiliang Xiao, Xiuming Wu, Zhenrui Huang, Quanfu Feng, Chenggang Luo, Zhiqiang Chen, Zhenchen Zhang, Caihong Jiang, Min Ren, Aiguo Yang
Summary: This study provides a comprehensive analysis of Ralstonia solanacearum species complex (RSSC), revealing its genetic diversity, pathogenicity, and evolution dynamics. The analysis of genomic relatedness and virulence factors shows significant differences among groups and strains, consistent with the new taxonomic classification. Furthermore, horizontal gene transfer plays a significant role in shaping the genetic plasticity and diversity of RSSC genomes.
FRONTIERS IN MICROBIOLOGY
(2022)