Review
Microbiology
Edgardo Moreno
Summary: The genus Brucella, initially described in 1920, has evolved over the years with the discovery of new species and a rejection of the proposal suggesting all belonged to a single species. Its genetic characteristics and relationship with Alphaproteobacteria have aided in the identification of virulence factors and evolutionary relationships within the group. Its 100-year history reflects ongoing scientific efforts and challenges in understanding brucellosis.
FEMS MICROBIOLOGY REVIEWS
(2021)
Article
Microbiology
Xiunuan Chen, Bingxia Dong, Ting Chen, Na Ren, Jing Wang, Ying Xu, Jifang Yang, Sidong Zhu, Jigang Chen
Summary: The bacterial strain 502str22T isolated from sediment in the East Pacific belongs to the genus Novosphingobium as indicated by genetic and phenotypic characterization. It represents a novel species with the proposed name Novosphingobium decolorationis sp. nov.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Wonjae Kim, Minkyung Kim, Woojun Park
Summary: The study identified a novel bacterium, Roseococcus microcysteis, with unique characteristics. Through analysis of 16S rRNA gene sequence, genomic comparison, and chemotaxonomic approaches, the researchers confirmed the classification of this new species within the genus Roseococcus.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Shuai Wang, Rui Yang, Lian Xu, Ya-Ting Xing, Ji-Quan Sun
Summary: p-Hydroxybenzoate is a common allelopathic compound found in soil from long-term monoculture cropping systems. A bacterial strain, LN3S51(T), capable of degrading p-hydroxybenzoate was isolated from saline soil, representing a novel species in a new genus.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Mauricio Toro-Nahuelpan, Juergen M. Plitzko, Dirk Schueler, Daniel Pfeiffer
Summary: This study used Volta phase plate cryoelectron tomography to reveal the three-dimensional ultrastructural organization of PopZ in two different bacteria. The results show that PopZ forms a porous network structure.
JOURNAL OF MOLECULAR BIOLOGY
(2022)
Article
Microbiology
Soohyun Maeng, Dong-Uk Kim, Sangyong Lim, Byoung-Hee Lee, Ki-eun Lee, Myungkyum Kim, Sathiyaraj Srinivasan, Jaewoo Bai
Summary: A novel bacterium, Methylobacterium radiodurans sp. nov., isolated from soil in Korea, shows high tolerance to low temperature, wide pH range, and low salt conditions, with essential genes related to DNA repair processes in its genome.
ARCHIVES OF MICROBIOLOGY
(2021)
Article
Microbiology
Wen-Ming Chen, Ting-Hsuan Chang, Che-Chia Yang, Der-Shyan Sheu, Li-Cheng Jheng, Shih-Yi Sheu
Summary: Two bacterial strains isolated from freshwater habitats in Taiwan, named HSP-20(T) and CCP-1(T), were characterized as novel species within the genus Rhodobacter based on their phenotypic and genotypic properties and phylogenetic analysis. The names proposed for these novel species are Rhodobacter amnigenus sp. nov. and Rhodobacter ruber sp. nov.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Natalia I. Garcia-Tomsig, Marta Robledo, George C. diCenzo, Alessio Mengoni, Vicenta Millan, Alexandra Peregrina, Alejandro Uceta, Jose I. Jimenez-Zurdo
Summary: The rhizosphere and rhizoplane provide nutrient-rich but selective environments for the root microbiome. The small RNAs AbcR1 and AbcR2 have been found to regulate the metabolism of nitrogen-fixing Sinorhizobium meliloti during the early stages of symbiosis with alfalfa. This RNA regulation plays a crucial role in optimizing metabolism and colonization of the root rhizoplane.
Article
Microbiology
Natalia Garcia-Tomsig, Marta Robledo, George C. diCenzo, Alessio Mengoni, Vicenta Millan, Alexandra Peregrina, Alejandro Uceta, Jose Jimenez-Zurdo
Summary: This study revealed the regulation and architecture of an extensive RNA posttranscriptional network in the legume symbiont S. meliloti, enhancing the beneficial bacterium's ability to colonize nutrient-rich but selective niches. The pervasive RNA regulation of metabolism is predicted to operate in diverse rhizobial species, opening new avenues for engineering competitive biofertilizers within sustainable agriculture.
Article
Agricultural Engineering
Bhawna Tyagi, Bulbul Gupta, Deepak Khatak, Ramovatar Meena, Indu Shekhar Thakur
Summary: In this study, Methylobacterium sp. ISTM1 was able to produce both EPS and PHA simultaneously in a single-step process by optimizing the culture conditions. The genomic analysis identified the genes and pathways involved in EPS and PHA production. The non-toxicity of the biopolymers was confirmed by cytotoxicity analysis. This research demonstrates the potential of utilizing agro-industrial waste for sustainable production of non-toxic biopolymers by Methylobacterium sp. ISTM1.
BIORESOURCE TECHNOLOGY
(2022)
Article
Microbiology
Francois Alberge, Bryan D. D. Lakey, Ryan E. E. Schaub, Alice C. C. Dohnalkova, Kimberley C. C. Lemmer, Joseph P. P. Dillard, Daniel R. R. Noguera, Timothy J. J. Donohue
Summary: Multi-protein complexes in the bacterial cell envelope play crucial roles in growth, division, biofilm formation, antimicrobial resistance, and production of valuable compounds. However, there are varied composition and function of subunits of these complexes. In this study, we identified a newly discovered lipoprotein (DalA) in Rhodobacter sphaeroides RSP_1200, which is involved in cell division and affects cell envelope synthesis and function. DalA forms a complex with other proteins needed for cell division, binds to peptidoglycan, and colocalizes with enzymes involved in the assembly of peptidoglycan.
Article
Environmental Sciences
Sarah AlDhafiri, Yin-Ru Chiang, Ashraf M. El Nayal, Raeid M. M. Abed, Nasser Abotalib, Wael Ismail
Summary: This study aimed to investigate the estrone degradation pathway and identify key degrading bacteria in the activated sludge of a major wastewater treatment plant in Bahrain. It was found that estrone degradation proceeds via the 4,5-seco pathway and is most likely mediated by alphaproteobacterial taxa.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Microbiology
Yun-Seok Jeong, Woorim Kang, June-Young Lee, Hojun Sung, Hyun Sik Kim, Jeong-Eun Han, Euon Jung Tak, So-Yeon Lee, Jae-Yun Lee, Pil Soo Kim, Dong-Wook Hyun, Mi-Ja Jung, Jin-Woo Bae
Summary: The article describes a novel species isolated from the gut of the Korean turban shell, named Pseudorhodobacter turbinis sp. nov., with details on its taxonomic characteristics and major lipid components.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Microbiology
Yan Gao, Guangyu Li, Chen Fang, Zongze Shao, Yue-Hong Wu, Xue-Wei Xu
Summary: A novel bacterial strain named Tsuneonella suprasediminis was isolated from the overlying water of the Lau Basin in the Southwest Pacific Ocean. This strain showed high genetic similarity to Tsuneonella flava, T. mangrovi, and Altererythrobacter ishigakiensis. The optimal growth conditions for strain Ery12(T) were 0-1.0% NaCl, pH 6.0-7.0, and 30-37 degrees C.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Review
Microbiology
Melene A. Alakavuklar, Aretha Fiebig, Sean Crosson
Summary: The cell envelope is a multilayered structure that protects bacterial cells from the outside world. The Brucella genus differs from commonly studied gram-negative bacteria in terms of its envelope structure and regulation, making it an ideal comparative model for studying the gram-negative envelope.
ANNUAL REVIEW OF MICROBIOLOGY
(2023)