Review
Plant Sciences
Riteshri Soni, Hareshkumar Keharia
Summary: The spore-forming Bacillus and Paenibacillus species are beneficial bacteria that can be used as effective phytostimulators, biofertilizers, and biocontrol agents in agriculture. They utilize various mechanisms to influence plant health and productivity, such as enhancing nutrient availability, modulating plant hormones, and defending against pathogens.
Article
Plant Sciences
Zhicheng Zhou, Xianying Tang, Lijuan Peng, Haixia Ding
Summary: Bacillus velezensis GUAL210 was isolated from the rhizosphere of healthy pepper plants in high-incidence anthracnose fields in Guizhou, China. It could be used as a potential biocontrol agent against pepper anthracnose and other soil-borne diseases. The genome of GUAL210 consisted of a single circular chromosome with a length of 4,011,788 bp and an average GC content of 46.41%, without any plasmids. A total of 4,115 protein-coding genes, 27 rRNAs, 87 tRNAs, and 12 secondary metabolite biosynthesis gene clusters were identified. The study revealed the presence of different gene clusters producing various compounds, such as bacilysin, surfactin, bacteriocin, bacillaene, and terpene, which could potentially aid in the inhibition of pathogens and provide valuable data for exploring the biocontrol mechanisms of B. velezensis strains.
Article
Plant Sciences
Pengjie Han, Tianrui Liu, Yuan Zheng, Ruiqi Song, Tiegui Nan, Xiaolong Yang, Luqi Huang, Yuan Yuan
Summary: In this study, a Pseudomonas strain ZL8 isolated from mycorrhizal samples was found to inhibit the growth of phytopathogenic fungi and promote the growth of Salvia miltiorrhiza. The strain also exhibited abilities such as phosphate dissolution, IAA production, and siderophore production. The compound 2,4-diacetylphloroglucinol (DAPG) produced by ZL8 showed significant inhibitory effects on phytopathogenic fungi.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Yu Long, Shaoru Chen, Xiaochen Xu, Wenbao Zhao, Xinghao Tang, Lei Zhang, Qinghua Zhang
Summary: The endophytic bacterium N4, isolated from the healthy leaves of Phoebe bournei, demonstrates excellent biocontrol activity against stem canker caused by Lasiodiplodia theobromae in P. bournei. By assembling a high-quality genome of N4 using second- and third-generation sequencing methods, it was found that the N4 genome contains a circular DNA chromosome of 4,218,183 bp length with 43.5% GC content and 11 secondary metabolite biosynthesis gene clusters, including genes for subtilomycin synthesis. This high-quality genome assembly and gene annotation resource provide valuable insights into the biocontrol potential of B. subtilis strain N4 against stem canker in P. bournei.
Article
Plant Sciences
Caroline F. Ajilogba, Olubukola O. Babalola, Patrick Adebola, Rasheed Adeleke
Summary: The rhizobacteria from the rhizosphere of Bambara groundnut have been found to have potential as biofertilizers and biocontrol agents. This study isolated and cultured rhizobacteria from soil samples, and conducted field experiments to confirm their positive effects on plant growth. Selected Bacillus isolates were particularly effective as biofertilizers, leading to increased crop yield.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biology
Hernando Jose Bolivar-Anillo, Victoria E. Gonzalez-Rodriguez, Jesus M. Cantoral, Dario Garcia-Sanchez, Isidro G. Collado, Carlos Garrido
Summary: The study demonstrates that endophytic bacteria isolated from maize plants exhibit significant antagonistic effects against Botrytis cinerea and have the potential to promote plant growth.
Article
Microbiology
Estefany Chavarria-Quicano, Victor Contreras-Jacquez, Armando Carrillo-Fasio, Francisco de la Torre-Gonzalez, Ali Asaff-Torres
Summary: Phytopathogenic nematodes (PPNs) can cause significant damage to agricultural crops worldwide, but they can be controlled using beneficial microorganisms and their metabolites. This research aimed to isolate and characterize bacteria from the rhizospheric soil in the Northwestern Desert of Mexico that have the potential to control PPNs. The secretome of Bacillus paralicheniformis TB197 showed the highest nematicidal activity (>95%) against Meloidogyne incognita, suppressing infections caused by M. enterolobii in tomato crops. In open field tests, the endospores of TB197 strain reduced the severity of M. enterolobii infection by 81% and the galling index by 84% in tomato greenhouse tests. The root necrosis caused by Radopholus similis in banana plantations was also reduced by 81% compared to the control. The endospores and secondary metabolites of B. paralicheniformis TB197 strain could be used in bionematicidal formulations.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Food Science & Technology
Shilin Tan, Jiaxin He, Zekun Liu, Shixuan Huang, Bin Zhu, Xingyou Zhou, Moutong Chen, Jumei Zhang, Qingping Wu, Meiyan Yang
Summary: In this study, a novel lytic Bacillus cereus phage, vB_BceS_LY1 (LY1), was isolated and characterized. LY1 showed a high lysis capacity and stability, and had the potential to control Bacillus cereus in different environments. It presents a promising biocontrol agent against Bacillus cereus.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Review
Biodiversity Conservation
Nur Ajijah, Angelika Fiodor, Alok Kumar Pandey, Anuj Rana, Kumar Pranaw
Summary: Plant growth-promoting bacteria (PGPB) enhance plant growth and protect plants from biotic and abiotic stresses through mechanisms such as colonization of plant surfaces and the formation of protective biofilms. These biofilms offer benefits like resistance to environmental conditions, protection against pathogens, and improved nutrient acquisition, facilitating beneficial bacteria-plant interactions. PGPB biofilms can outcompete other microorganisms on plant surfaces and increase agricultural productivity and crop yields.
Article
Plant Sciences
Shuang Ma, Yanjie Wang, Wang Teng
Summary: The study found that Bacillus velezensis K-9 has the potential to be used as a biocontrol agent for potato scab. The results suggest that B. velezensis K-9 inhibited the infection caused by Streptomyces scabies and significantly reduced the depth of disease lesions. Field tests showed that potato yield increased significantly following B. velezensis K-9 treatment.
Article
Biotechnology & Applied Microbiology
Shailesh S. Sawant, Janghoon Song, Ho-Jin Seo
Summary: In this study, antagonistic bacteria were isolated from rhizospheric soil of asymptomatic pear trees infested with white root rot, and a bacterial strain belonging to the Bacillus genus was found to effectively inhibit the growth of R. necatrix. This strain holds potential in controlling the prevalence of this pathogen in Korean pear and apple orchards, as it possesses antibiotic biosynthesis genes and plant growth-promoting traits.
BIOLOGICAL CONTROL
(2023)
Article
Plant Sciences
Shailesh S. Sawant, Janghoon Song, Ho-Jin Seo
Summary: This study isolated a Bacillus velezensis strain RDA1 from soil samples in white root rot-infested organic pear orchards, which showed effective inhibition against Rosellinia necatrix and had plant growth-promoting traits. It has significant potential application in sustainable agriculture.
Article
Plant Sciences
Naveenkumar Patil, S. Raghu, L. Mohanty, B. Jeevan, G. Basana-Gowda, Totan Adak, M. Annamalai, Prakash Chandra Rath, Senthil-Nathan Sengottayan, Guru-Pirasanna-Pandi Govindharaj
Summary: This study evaluates the effect of PGPR strains isolated from the rhizosphere soil of medicinal plants on rice under stress conditions. Three promising PGPR strains, including Bacillus velezensis, B. megaterium, and B. toyonensis, were found to improve the disease resistance and growth performance of rice.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Article
Microbiology
Huacai Fan, Shu Li, Li Zeng, Ping He, Shengtao Xu, Tingting Bai, Yuling Huang, Zhixiang Guo, Si-Jun Zheng
Summary: Two endophytic bacterial isolates with strong antagonistic effects against TR4, identified as B. amyloliquefaciens and B. subtilis, were isolated from banana-producing areas in Yunnan Province, China. These isolates showed high inhibition rates of TR4 and promoted banana plant growth in greenhouse experiments. Molecular characterization results indicated potential biocontrol mechanisms and suggested that locally sourced antagonistic strains could serve as new biological control resources for FWB.
Article
Microbiology
Yuechen Yan, Weihui Xu, Wenjing Chen, Yunlong Hu, Zhigang Wang
Summary: The complete genome sequence of Bacillus velezensis YYC, isolated from the tomato rhizosphere, was described in this study. The genome size was 3,973,236 bp and consisted of 4034 genes, with a mean G + C content of 46.52%. Genes related to promoting plant growth, triggering plant immunity, and microbe-plant interaction were identified from the genome.
ARCHIVES OF MICROBIOLOGY
(2022)