The dual production of NA4 and NA6, together with its alkaline nature, distinguishes MARAS458A from previously reported Microbulbifer β -agarases, suggesting structural variations affecting substrate processing and product specificity.
The investigated crude extract exhibited pronounced antitumor activity, making it a promising candidate for further studies, and the underlying hypothesis suggested that strains with broad adaptive potential may serve as promising producers of natural products with antitumor properties.
Andrii Sylchuk, M. Loboda, Ivan Roman et al.· Applied Sciences· 0 citations
Findings suggest that strain D18 possesses adaptive strategies for survival in deep-sea environments and highlight its potential as a source of novel secondary metabolites.
Weifeng Liu, Conghui Huang, Aifang Deng et al.· Marine Genomics· 0 citations
Together, these findings identify CACC1094 as a rumen-associated P. polymyxa strain with broad-spectrum antifungal activity and experimentally validated fusaricidin production, highlighting its potential as a source of antifungal metabolites for agricultural and veterinary applications.
Findings establish B. velezensis strains BP5 and BP103 as highly promising biocontrol agents, combining high genetic stability with diverse secondary metabolite profiles, suitable for development into sustainable microbial bio-bactericides.
Lê Uyển Thanh, Vu Nhat Tan, T. Huyen et al.· Frontiers in Microbiology· 0 citations
A polyphasic taxonomic approach was used to characterize strain B38T, isolated from the phyllosphere of Salicornia hispanica. The strain is an aerobic, Gram-negative, halotolerant coccus–rod-shaped bacterium exhibiting optimal growth at 28 °C, pH 6–9, and up to 12% (w/v) NaCl. The genome of strain B38T is 3.2 Mbp with a DNA G+C content of 43.81 mol%. Phylogenetic analysis based on the 16S rRNA gene sequences placed B38T within the genus Psychrobacter. Although 16S rRNA gene sequencing showed high similarity to P. alimentarius (99.73%), genomic indices (ANI, AAI, and dDDH) remained below species delimitation thresholds. Chemotaxonomic features included C18:1 ω9c as the major fatty acid, Q-8 as the main quinone, and diphosphatidylglycerol as the major polar lipid. Consequently, strain B38T (=CECT 31210; =LMG 33901) is proposed as Psychrobacter halotolerans sp. nov. Additionally, the plant growth-promoting (PGP) potential of the halotolerant strain B38T was evaluated in lettuce under salt stress, alongside the salt-tolerance mechanisms induced by inoculation. Strain B38ᵀ significantly enhanced lettuce biomass, leaf area, and PSII quantum efficiency compared to non-inoculated controls. These benefits were linked to increased soluble sugars and phenolic compounds, modulation polyamine homeostasis, and reduced oxidative damage. Our results demonstrate that P. halotolerans B38ᵀ effectively mitigates salt stress in plants, representing a promising biotechnological tool for enhancing salinity tolerance in agricultural systems.
Patricia Sánchez, F. Martínez-Checa, Francisco Palma et al.· Frontiers in Microbiology· 0 citations