Article
Microbiology
Carlos Cortes-Albayay, Vartul Sangal, Hans-Peter Klenk, Imen Nouioui
Summary: This study compared the biodegradation capabilities of several mycobacterial species for chlorinated ethenes, finding multiple genes involved in the process and confirming the formation of a novel clade, classified as Mycolicibacterium vinylchloridicum sp. nov.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Tanatorn Chantavorakit, Chanwit Suriyachadkun, Kui Hong, Kannika Duangmal
Summary: This study utilized a polyphasic approach to describe two halophilic actinobacterial strains isolated from halophytes in Thailand, identifying them as novel species of the genus Nocardiopsis.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Article
Microbiology
Shuangqing Zhou, Yifan Zhou, Chengui Li, Wenqiang Wu, Yun Xu, Wei Xia, Dongyi Huang, Xiaolong Huang
Summary: In this study, endophytic actinobacteria were isolated from yam plants and evaluated for their potential in controlling yam anthracnose. One strain, HNM0140(T), showed strong antifungal activity and plant growth-promoting traits. Under greenhouse conditions, treatment with HNM0140(T) significantly reduced the severity and incidence of yam anthracnose. Phylogenetic and genomic analyses revealed that HNM0140(T) belonged to the genus Streptomyces and represented a new species named Streptomyces endophytica sp. nov. Genomic analysis also indicated the presence of potential secondary metabolites and genes related to plant growth promotion and antifungal activity. Overall, HNM0140(T) showed promising biocontrol potential for yam anthracnose.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Microbiology
Jiaqi Yao, Ya Zhang, Yuan Gao, Lingxiao Liu, Zhouai Ma, Chengliang Cao, Ludan Li, Jihong Jiang, Jinjuan Liu
Summary: A new Gram-stain-positive, aerobic actinomycete strain named KLBMP 8922T was isolated from a soil sample in Guizhou Province, China. Through a polyphasic approach, it was confirmed that KLBMP 8922T represents a novel species of the genus Yinghuangia, and the name Yinghuangia soli sp. nov. is proposed.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Article
Microbiology
Wen-Rui Cao, Xin-Ran Yu, Yuan-Yuan Sun, Ming-Yu Jiang, Xiao-Dong Xu, Ying-Jie Li
Summary: A new bacterium belonging to the genus Ornithinimicrobium was isolated from the kelp Laminaria japonica. It exhibited Gram-positive, aerobic, non-sporulating, yellow-pigmented characteristics.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Soohyun Um, Jaeyoun Lee, Seung Hyun Kim
Summary: This study focused on the endophytes of Maesa japonica and their interaction with the host plant at the metabolite level. Among the isolated endophytes, Streptomyces olivaceus JB1 was investigated for its antibacterial activities. Spectroscopic techniques confirmed the production of lobophorin analogs by JB1, and both reported and unreported analogs were detected. The presence of lobophorin A in the dried residues of M. japonica suggests that JB1 resides in the host and accumulates its secondary metabolites through interaction with the plant. Antimicrobial activity tests supported the mutualistic relationship between the host plant and the microbe. Additionally, lobophorin-producing Streptomyces spp. were also isolated from marine environments, and a saline water stress tolerance test showed that JB1 does not accelerate its growth in a saline medium.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Aram R. Ali, Yadollah Bahrami, Elham Kakaei, Sara Mohammadzadeh, Sasan Bouk, Nastaran Jalilian
Summary: Antibiotic resistance is a global threat to human health, and the discovery of new antibiotics from unexplored habitats is crucial. This study isolated endophytic actinobacteria (EA) from the Citrullus colocynthis plant and investigated their antibacterial properties. Six endophytic actinobacteria were isolated, and they were classified into two families based on morphological features and molecular identification. One of the isolated strains was proposed as a novel species/strain. Five strains showed antagonistic activity against pathogenic bacteria, indicating the potential of Citrullus colocynthis as an untapped source for the discovery of new antibiotics.
MICROBIAL CELL FACTORIES
(2022)
Article
Microbiology
Beatriz M. Assad, Daiani C. Savi, Stellee M. P. Biscaia, Barbara F. Mayrhofer, Jucelia Iantas, Mathias Mews, Jaqueline C. de Oliveira, Edvaldo S. Trindade, Chirlei Glienke
Summary: The study on the endophytic actinobacteria of the native plant Hymenachne amplexicaulis in the Pantanal wetland revealed the potential antibacterial and cytotoxic properties of these microorganisms. The results emphasize the importance of discovering new drugs and the urgent need to conserve ecosystems such as the Brazilian Pantanal.
MICROBIOLOGICAL RESEARCH
(2021)
Article
Agronomy
Ting Xu, Q. A. Tuan Vo, Steve J. Barnett, Ross A. Ballard, Yonghua Zhu, Christopher M. M. Franco
Summary: Endophytic actinobacterial strains have positive effects on the chickpea-Mesorhizobium symbiosis, promoting plant growth and increasing grain yield. The improvement in symbiosis is associated with enhanced rhizobial growth, earlier nodule formation, increased secondary root formation, and up-regulated expression of related genes.
Article
Microbiology
Chollachai Klaysubun, Nantana Srisuk, Kannika Duangmal
Summary: A polyphasic approach was used to describe a novel actinobacterium strain RB6PN24(T) isolated from peat swamp forest soil in Thailand, which belongs to a new species Kitasatospora humi of the genus Kitasatospora. Phenotypic, genotypic, chemotaxonomic, and phylogenetic analyses revealed distinct differences between RB6PN24(T) and other Kitasatospora species.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Article
Microbiology
Lingxiao Liu, Ya Zhang, Qiuyu Chen, Qi Shen, Ludan Li, Chengliang Cao, Rongpeng Li, Jihong Jiang, Jinjuan Liu
Summary: A Gram-positive, aerobic actinomycete designated strain KLBMP 9356T was isolated from weathered potash tailings soil in Xuzhou, Jiangsu Province, PR China. The strain showed phylogenetic similarity to Nocardioides zhouii CGMCC 1.11084T (98.9%) and Nocardioides glacieisoli CGMCC 1.11097T (98.7%). It exhibited distinct characteristics such as cell wall peptidoglycan, menaquinone, fatty acids, and polar lipids. The strain represents a novel species named Nocardioides potassii sp. nov. with a G+C content of 71.6 mol%. Rating: 8/10.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Guillermo Cera, Chandra Risdian, Hani Pira, Joachim Wink
Summary: This study explored the diversity of culturable actinobacteria isolated from the Pacific oyster Crassostrea gigas and found that they have antimicrobial activity. It suggests that these actinobacteria have the potential to be a source of new therapeutic agents to combat the increasing antibiotic resistance of human pathogens.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Article
Food Science & Technology
Hakimeh Oloumi, Moj Khaleghi, Ava Dalvand
Summary: Plant biotechnology has facilitated the development of new products with enhanced disease resistance, drought and salt stress tolerance, and nutritional value. This study aimed to isolate endophytic Actinobacteria strains from medicinal plants and evaluate their bioactive potential. Fifteen Actinobacteria strains were isolated from Persian iris and Echium amoenum plants, which showed antioxidant activity. Phylogenetic analysis revealed that two strains belonged to the Streptomyces genus. Furthermore, the supernatant of a selected endophytic strain promoted root and shoot growth and increased chlorophyll content in wheat plants under salinity stress. Overall, symbiotic strains with medicinal plants are valuable sources of bioactive compounds.
FOOD SCIENCE & NUTRITION
(2023)
Article
Agronomy
Ting Xu, Kunpeng Cui, Jiawei Chen, Rui Wang, Xiangnan Wang, Longsheng Chen, Zhen Zhang, Zhilong He, Caixia Liu, Wei Tang, Yonghua Zhu, Yongzhong Chen
Summary: Camellia oleifera is a famous woody oil tree with high commercial value, harboring a high diversity and potential of culturable endophytic actinobacteria; Soil characteristics play a crucial role in shaping the community composition of endophytic actinobacteria; Endophytic actinobacteria show significant growth promotion effects on Camellia oleifera.
Article
Microbiology
Rui Li, Gang-Qiang Jiang, Yun Wang, Yi-Guang Chen, En-Min Zhou, Shu-Kun Tang
Summary: Strain YIM 93776(T), a Gram-stain-positive actinobacterium isolated from a saline sediment sample in Xinjiang, China, was identified as a novel species within the genus Glycomyces through phylogenetic and chemotaxonomic analyses. The draft genome sequence revealed a size of 5.37 Mbp with 69.5% DNA G + C content, supporting its classification as Glycomyces salinus sp. nov.
ARCHIVES OF MICROBIOLOGY
(2021)
Article
Microbiology
De-Feng An, Long-Qian Jiang, Kun Zhang, Gui-Ding Li, Xin-Yu Wang, Ming-Guo Jiang, Lei Lang, Li-Song Wang, Johannes F. Imhoff, Cheng-Lin Jiang, Yi Jiang
Summary: A novel Actinobacterium strain YIM 131861(T) was isolated from lichen collected from the South Bank Forest of the Baltic Sea in Germany, belonging to the genus Glaciibacter. The strain exhibited specific growth and physiological characteristics, with high sequence similarity to Glaciibacter superstes NBRC 104264(T). The proposed name for this novel species is Glaciibacter flavus sp. nov., with the type strain being YIM 131861(T) (= CGMCC 1.16588(T) = NBRC 113572(T)).
ARCHIVES OF MICROBIOLOGY
(2021)
Article
Microbiology
Song-Biao Shi, Jia-Fa Wu, Li-Fang Yang, Ming-Guo Jiang, Cai-Mi Gao, Cheng-Lin Jiang, Yi Jiang
Summary: Strain GY 70310(T), a novel Gram-stain-negative bacterium isolated from the intestinal tract of Konosirus punctatus collected from Minjiang River, China, shows moderate relation to other Crenobacter species and possesses genes encoding nitrate reductase, nitrite oxidoreductase, and urease. This novel strain is proposed as a new species within the genus Crenobacter, named Crenobacter intestini sp. nov., with distinctive genotypic and chemotaxonomic characteristics.
CURRENT MICROBIOLOGY
(2021)
Article
Microbiology
Feina Li, Qinpei Lu, Shuilin Liao, Li Tuo, Shaowei Liu, Qin Yang, Adong Shen, Chenghang Sun
Summary: Strain 10F1D-1(T) is a novel actinobacterial species belonging to the genus Schumannella, named as Schumannella soli sp. nov., which adapts to the salt environment of mangrove. It contains biosynthetic gene clusters for osmoprotectants and bioactive compounds as secondary metabolites. Genomic analyses confirm its differentiation from the only species of the genus based on ANI, AAI, and dDDH values.
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
(2021)
Article
Microbiology
Fei Li, Yuanlin Huang, Wenjin Hu, Zhe Li, Qiaozhen Wang, Shushi Huang, Lian Yu, Shaowei Liu, Chenghang Sun, Xinli Pan
Summary: Members of the family Rhodobacteraceae are highly diverse, originating mostly from coastal marine environments. A novel species within this family, named Mesobaculum littorinae gen. nov., sp. nov., was isolated from the sea snail Littorina scabra. Phylogenetic, phenotypic, and chemotaxonomic analyses suggested that strain M0103(T) represents a novel genus and species in the family.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Multidisciplinary Sciences
Yuanqiang Zou, Xiaoqian Lin, Wenbin Xue, Li Tuo, Ming-Sheng Chen, Xiao-Hui Chen, Cheng-hang Sun, Feina Li, Shao-wei Liu, Ying Dai, Karsten Kristiansen, Liang Xiao
Summary: Two novel anaerobic strains, designated AF52-21(T) and CM04-06(T), were isolated from faeces of healthy Chinese donors using a pure culture strategy. Phylogenetic analysis revealed that these strains clustered with Faecalibacterium species, supporting their recognition as two new species within the genus. Genomic analysis showed differences below the proposed species threshold, confirming their uniqueness.
SCIENTIFIC REPORTS
(2021)
Article
Microbiology
Qin Yang, Pu-Yu Guo, Elena Y. Abidueva, Fei-Na Li, Chun-Mei Xue, Shao-Wei Liu, Cheng-Hang Sun
Summary: Strain G463(T) was isolated from rhizosphere soil of Salicornia europaea L. in Lake Gudzhirganskoe in Siberia, identified as a novel species of the genus Hoyosella, named as Hoyosella lacisalsi sp. nov.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Chemistry, Medicinal
Qin-Pei Lu, Yong-Mei Huang, Shao-Wei Liu, Gang Wu, Qin Yang, Li-Fang Liu, Hai-Tao Zhang, Yi Qi, Ting Wang, Zhong-Ke Jiang, Jun-Jie Li, Hao Cai, Xiu-Jun Liu, Hui Luo, Cheng-Hang Sun
Summary: The study employed an integrated strategy of combining phylogenetic data, bioactivity tests, and metabolomics-based dereplication method to accelerate the selection process for discovering novel biologically active compounds from mangrove actinomycetia. By evaluating 179 actinomycetial strains against 12 indicator bacteria and utilizing UPLC-HRMS-PCA and OPLS-DA models, potential bioactive compounds were identified from outliers showing antibacterial activity.
Article
Microbiology
Shao-Wei Liu, Norovsuren Jadambaa, Arina A. Nikandrova, Ilya A. Osterman, Cheng-Hang Sun
Summary: This study characterized the biodiversity of culturable actinobacteria in the saxaul forest of the Gobi Desert in Mongolia and assessed their potential to produce antibacterial compounds. The results showed that some isolates exhibited antagonistic activity against tested pathogens, and bioactive compounds such as chloramphenicol, althiomycin, and granaticin were identified from extracts of Streptomyces strains. This work demonstrates the potential of the saxaul forest in the Mongolian Gobi Desert as a source for novel actinobacteria and biologically active compounds.
Article
Multidisciplinary Sciences
Eric Tzyy Jiann Chong, De Chen Chiang, Keh Kheng Png, Elena Abidueva, Svetlana Zaitseva, Chenghang Sun, Ping-Chin Lee
Summary: The Streptomyces cavourensis strain 2BA6PG(T) was isolated from sediment from the bottom of the salt lake Verkhnee Beloe (Buryatia, Russia). The complete genome of this strain consists of 7,651,223 bp with a high G + C content of 72.1%, and includes 7,069 coding sequences and 315 subsystems. The 16S ribosomal RNA analysis reveals its closest relatedness to Streptomyces cavourensis strain NBRC 13026(T) (98.91% identity), followed by other strains with lower identities. This is the first reported complete genome of Streptomyces cavourensis isolated from sediment from the bottom of the salt lake Verkhnee Beloe.
Article
Microbiology
Maira Saleem, Ashba Hassan, Feina Li, Qinpei Lu, Larissa V. Ponomareva, Sean Parkin, Chenghang Sun, Jon S. S. Thorson, Khaled A. A. Shaaban, Imran Sajid
Summary: 100 strains of actinobacteria were isolated from the Kubuqi desert in Inner Mongolia, China. Streptomyces was found to be the dominant genus, comprising 37 different species, along with the rare actinobacterial genus Lentzea. The methanolic extracts of 60.8% of the strains exhibited potent antimicrobial activities and high to mild in vitro cytotoxicity against certain cell lines. Metabolomics analysis revealed the presence of compounds with molecular weights ranging from 100 to 1000 Da. The fermentation of one strain yielded three pure compounds, including a new bacterial metabolite.
Article
Microbiology
Shao-Wei Liu, Ke-Ke Luo, Fei-Na Li, Ben-Yin Zhang, De -Jun Zhang, Cheng- Hang Sun
Summary: A novel Gram-stain-positive actinobacterium, designated strain 10Sc9-8T, was isolated from soil in the Taklamakan desert of China. The strain showed optimal growth conditions at temperatures ranging from 8 to 37°C, pH 6.0-10.0, and with 0-15% NaCl. Phylogenetic and phylogenomic analyses placed strain 10Sc9-8T in the genus Georgenia, with a 16S rRNA gene sequence similarity of 97.4% to Georgenia yuyongxinii Z443T. Based on phenotypic, phylogenetic, and phylogenomic data, a new species, Georgenia halotolerans sp. nov., is proposed for strain 10Sc9-8T.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Feina Li, Xiaomeng Hao, Qinpei Lu, Li Tuo, Shaowei Liu, Huiwen Zheng, Mada Triandala Sibero, Chen Shen, Chenghang Sun
Summary: A novel strain of Gram-stain-positive, aerobic, non-flagellated and rod-shaped actinobacterium, designated 10F1B-8-1(T), was isolated from mangrove soil in China. The strain exhibited unique growth conditions and shared high genetic similarity with Protaetiibacter larvae and Protaetiibacter intestinalis. Based on polyphasic data, the strain was classified as a new species of the genus Protaetiibacter, named Protaetiibacter mangrovi sp. nov.
JOURNAL OF ANTIBIOTICS
(2023)
Article
Chemistry, Medicinal
Qinpei Lu, Gang Wu, Xiaomeng Hao, Xinxin Hu, Hao Cai, Xiujun Liu, Xuefu You, Hongwei Guo, Chenghang Sun
Summary: Two rare quinomycin-type octadepsipeptides were discovered from mangrove-derived Streptomyces, and their chemical structures were analyzed. However, they did not show significant antibacterial or cytotoxic activities.
Article
Microbiology
Lifang Liu, Yuyu Liu, Shaowei Liu, Arina A. Nikandrova, Arina N. Imamutdinova, Dmitrii A. Lukianov, Ilya A. Osterman, Petr V. Sergiev, Benyin Zhang, Dejun Zhang, Feina Li, Chenghang Sun
Summary: This study investigated the biodiversity and novelty of culturable actinobacteria in soil from the Western Qinghai-Tibet Plateau to discover new antibiotics. By integrating antibacterial assays with omics tools, a rare actinobacterial strain, Amycolatopsis sp. A133, and its secondary metabolites were further studied. The secondary metabolites were identified as rifamycins and zampanolides, and five members of rifamycins were purified and identified, including a new member, rifamycin W-M1.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Limnology
Qin Yang, Puyu Guo, Elena Y. Y. Abidueva, Elena V. V. Lavrentyeva, Irina M. M. Lisevich, Ilya A. A. Osterman, Petr V. V. Sergiev, Shaowei Liu, Chunmei Xue, Chenghang Sun
Summary: In this study, pharmaceutical actinobacteria were isolated from soil samples collected from Gudzhirganskoe saline lake in Siberia, Russia. A total of 635 actinobacterial strains belonging to 21 genera were obtained, with Streptomyces being the most predominant genus. Antibacterial activities and mechanisms were evaluated for selected representative strains, and a new antibiotic compound called LG-1 was isolated. This study provides insights into actinobacterial diversity and antibiotic production potential in salty environments.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2023)
