Article
Food Science & Technology
Teng Qi, Shupei Wang, Lili Deng, Lanhua Yi, Kaifang Zeng
Summary: Bacterial soft rot is a devastating disease that affects vegetables. Lactic acid bacteria (LAB), such as Lactobacillus paracasei WX322 and its bacteriocin, have shown effective antibacterial activities against various foodborne pathogens, including the soft rot pathogen Pectobacterium carotovorum subsp. brasiliense BZA12 (Pcb BZA12). The complete genome sequencing of L. paracasei WX322 revealed new bacteriocin gene clusters, enhancing our understanding of its antibacterial activity.
Article
Biotechnology & Applied Microbiology
Gal Sason, Edouard Jurkevitch, Amos Nussinovitch
Summary: This research developed a kappa-carrageenan-based encapsulation system to release predators for preventing soft-rot infections. The encapsulated predators efficiently preyed on soft rot bacteria and had higher survival rates after drying.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Microbiology
Hui Pan, Caihong Zhong, Zupeng Wang, Lei Deng, Wenyi Li, Juan Zhao, Chao-an Long, Li Li
Summary: The study found that the strain 37 of Meyerozyma guilliermondii effectively controlled soft rot disease in kiwifruit caused by Botryosphaeria dothidea and Diaporthe actinidiae. The strain adhered to the pathogens' mycelium and quickly colonized the kiwifruit flesh. In addition, it induced kiwifruit resistance by increasing defense-related enzyme activity, antioxidant substances content, and suppressing cell wall-degrading enzyme activity.
Article
Microbiology
Olumayowa Mary Olowe, Lidia Nicola, Michael Dare Asemoloye, Akinlolu Olalekan Akanmu, Olubukola Oluranti Babalola
Summary: This article reviews the constraints of tomato root rot in Africa and highlights the role of Trichoderma in optimizing crop productivity. The mechanisms of action of Trichoderma and the challenges in its adoption as a biocontrol agent in Africa are also discussed.
MICROBIOLOGICAL RESEARCH
(2022)
Article
Microbiology
Marcin Borowicz, Dorota M. Krzyzanowska, Magdalena Narajczyk, Marta Sobolewska, Magdalena Rajewska, Paulina Czaplewska, Katarzyna Wegrzyn, Robert Czajkowski
Summary: Tailocins are nanomolecular machines produced by bacteria with bactericidal activity. In this study, a new tailocin produced by the plant pathogenic bacterium Dickeya dadantii was characterized. The tailocins showed resistance to pH, temperature, and high osmolarity, and had bactericidal activity against certain strains, but were not toxic to other bacteria and nematodes.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Raheela Riaz, Asghar Khan, Wajeeha Jahangir Khan, Zahra Jabeen, Humaira Yasmin, Rabia Naz, Asia Nosheen, Muhammad Nadeem Hassan
Summary: Two out of 41 rhizobacteria isolated from the rhizosphere of various vegetables displayed antagonistic activity against F. solani, the main causative agent of pea root rot. These antagonistic bacteria produced antifungal metabolites and showed potential for promoting plant growth. In pea inoculation assays, the rhizobacteria significantly improved seed germination, shoot and root length, and fresh weight while reducing the severity of root rot.
BIOLOGICAL CONTROL
(2021)
Article
Biology
Yurong Zhao, Xuewen Xie, Junhui Li, Yanxia Shi, Ali Chai, Tengfei Fan, Baoju Li, Lei Li
Summary: In this study, we identified a Paenibacillus peoriae strain ZF390 with potent control efficiency against Pectobacterium brasiliense-induced bacterial soft rot in cucumber plants. Comparative genomic analysis revealed potential biocontrol mechanisms in strain ZF390. These findings provide new insights for the management of bacterial soft rot and highlight the potential of strain ZF390 as a biocontrol agent.
Article
Agronomy
Mohadeseh Hassanisaadi, Gholam Hosein Shahidi Bonjar, Akbar Hosseinipour, Roohollah Abdolshahi, Essaid Ait Barka, Ismail Saadoun
Summary: The study identified 53 out of 116 actinobacteria isolates with antagonistic activity against Pythium aphanidermatum, and selected two bioactive Streptomyces isolates (H2 and H3) for further evaluation in controlling damping-off disease in tomato. The in vivo greenhouse experiments demonstrated that these two bioactive Streptomyces strains effectively reduced disease incidence and improved plant performance. Phylogenetic analysis revealed close relations of the strains H2 and H3 to known Streptomyces species, indicating their potential as biocontrol agents against Pythium aphanidermatum.
Article
Biotechnology & Applied Microbiology
Nada Ouhaibi-Ben Abdeljalil, Jessica Vallance, Jonathan Gerbore, Amira Yacoub, Mejda Daami-Remadi, Patrice Rey
Summary: The study demonstrated that the combination of Pythium oligandrum and three tomato-associated rhizobacterial strains can effectively control Rhizoctonia root rot, with disease suppression potential of up to 80% and increased plant growth compared to controls.
BIOLOGICAL CONTROL
(2021)
Article
Biotechnology & Applied Microbiology
Pengjie He, Wenyan Cui, Pengbo He, Shahzad Munir, Xingyu Li, Yixin Wu, Yongmei Li, Suhail Asad, Pengfei He, Yueqiu He
Summary: The Bacillus amyloliquefaciens subsp. plantarum strain KC-1 has been identified as an effective biocontrol agent against Pectobacterium carotovora subsp. carotovora, significantly reducing soft rot disease in Zantedeschia species. Application of KC-1 resulted in persistent presence on leaves for up to 30 days and maximum inhibition activity in greenhouse conditions. Pre-treatment with KC-1 showed higher growth levels and reduced disease severity index in Zantedeschia tubers.
BIOLOGICAL CONTROL
(2021)
Article
Agronomy
Aphisit Nilmat, Wannaporn Thepbandit, Wilawan Chuaboon, Dusit Athinuwat
Summary: The research focused on the biocontrol activity of Pseudomonas fluorescens strain SP007s and its formulation for disease control and growth promotion in kale. The results showed that a unique mixture of paper sludge, sugar sludge, and glycerol at 40% relative humidity prolonged the survival of SP007s and effectively controlled P. carotovorum soft rot disease. The formula also promoted growth in terms of canopy width, shoot height, number of leaves per plant, fresh weight, and dry weight.
Article
Microbiology
Jeremy Cigna, Kevin Robic, Pauline Dewaegeneire, Valerie Helias, Amelie Beury, Denis Faure
Summary: In this study, we sampled and characterized 669 Dickeya and Pectobacterium isolates, identifying eleven species. Variations in pathogen abundance were observed at field and parcel levels. We also tested 41 isolates against biocontrol agents, identifying effective agents against multiple species.
Article
Microbiology
Afsana Hossain, Md. Arshad Ali, Li Lin, Jinyan Luo, Yuxin You, Md. Mahidul Islam Masum, Yugen Jiang, Yanli Wang, Bin Li, Qianli An
Summary: This study investigated the antibacterial activities of polymyxin-producing bacteria within the Paenibacillus polymyxa complex against polymyxin-resistant Dickeya and Pectobacterium phytopathogens. Through antagonistic assays, it was found that these bacteria showed clear antagonistic activities against the phytopathogens in vitro and in vivo. The most effective strain, P. polymyxa ShX301, demonstrated broad-spectrum antagonistic activities, completely eliminating D. dadantii from sweet potato seed tubers and promoting the growth of sweet potato seedlings. The study suggests that these bacteria within the P. polymyxa complex have the potential to be effective biocontrol agents and plant growth promoters.
Article
Microbiology
Wenzhi Li, Youhua Long, Feixu Mo, Ran Shu, Xianhui Yin, Xiaomao Wu, Rongquan Zhang, Zhuzhu Zhang, Linan He, Tingting Chen, Jia Chen
Summary: In this study, the antagonistic fungus Fusicolla violacea J-1 showed high antifungal activity against Alternaria alternata, inhibiting its growth and conidia germination. The antagonistic fungus J-1 not only damaged the integrity of cell membranes but also increased the activity of chitinase and beta-1,3-glucanase enzymes in A. alternata, indicating serious damage to the cell wall. Additionally, J-1 and its aseptic filtrate exhibited broad-spectrum antifungal activity against several other fungal phytopathogens.
Article
Plant Sciences
Siqi Liu, Xixian Zhu, Zhenchen Yan, Hui Liu, Lianhui Zhang, Wenjuan Chen, Shaohua Chen
Summary: Quorum sensing is a communication mechanism used by microorganisms to regulate population density and behavior. Quorum quenching, which interferes with this communication, shows promise in plant disease control. In this study, a quenching strain of Pseudomonas multiresinivorans QL-9a was isolated, and it demonstrated excellent degradation ability against signaling molecules and reduced the severity of bacterial soft rot caused by Pectobacterium carotovorum.
