Article
Marine & Freshwater Biology
Jun-qiong Shi, Tian Ou-yang, Song-qi Yang, Lu Zhao, Lu-lu Ji, Zhong-xing Wu
Summary: This study reveals the transcriptome expression differences of Raphidiopsis raciborskii under different phosphorus acclimation conditions, and identifies the coordinated regulation of multiple metabolic pathways and key genes, which helps the cyanobacterium adapt to changes in phosphorus availability.
Article
Marine & Freshwater Biology
Tanise Klein Ramos, Luiza Dy Fonseca Costa, Joao Sarkis Yunes, Charrid Resgalla, Jose Bonomi Barufi, Eduardo de Oliveira Bastos, Paulo Antunes Horta, Leonardo Rubi Rorig
Summary: The study found that the STX-producing R. raciborskii has been present in the waters of Peri Lake in southern Brazil for years, posing potential risks to the local population's water supply. Experimental results showed that STX concentrations are particularly high in warmer months, even reaching the coastal zone. The experiments also indicated that R. raciborskii strains have varying tolerances to different salinities, which in turn affect STX production, while mussels feeding on R. raciborskii can absorb and accumulate STX.
Article
Biotechnology & Applied Microbiology
Lais Albuquerque Giraldi, Sarah Regina Vargas, Paulo Vagner Santos, Alessandra Emanuele Tonietto, Flavia Vischi Winck, Maria do Carmo Calijuri
Summary: The study reveals that high Cu2+ concentrations can stimulate toxin synthesis in cyanobacteria and microalgae, particularly increasing saxitoxins (STXs) production in early growth stages. Although cell concentration and biovolume decrease in high Cu2+ conditions, cell volume increases, indicating the potential toxicity of Raphidiopsis raciborskii.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Ranielle Daiana dos Santos Silva, Mathias Ahii Chia, Vanessa Virginia Barbosa, Juliana dos Santos Severiano, Jose Etham de Lucena Barbosa
Summary: The eutrophication of aquatic ecosystems and the rise in global temperature have increased the occurrence of harmful cyanobacterial blooms. This study investigated the effects of nitrogen, phosphorus, and temperature on the growth and toxin production of R. raciborskii. The results suggest that nutrient and temperature variations promote the proliferation of R. raciborskii, but it is still unclear whether elevated temperatures could reduce the toxicity of STX-producing strains.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Marine & Freshwater Biology
Baohai Zheng, Shuhan He, Lu Zhao, Jiaxin Li, Yuxin Du, Yuxin Li, Junqiong Shi, Zhongxing Wu
Summary: This study investigated the physiological and metabolomic profiles of Raphidiopsis raciborskii isolated from a temperate lake in China and found that temperature significantly affected its growth, cell size, and metabolites. Low temperature decreased cell viability and photosynthetic efficiency, while increasing the proportion of akinete and carbon fixation per unit cell. Metabolomic data confirmed shifts in metabolic pathways in response to temperature change.
Article
Chemistry, Multidisciplinary
Julia Krumbholz, Keishi Ishida, Martin Baunach, Jonna E. Teikari, Magdalena M. Rose, Severin Sasso, Christian Hertweck, Elke Dittmann
Summary: In this study, two cell density-dependent chemical mediators in the symbiotic model strain Nostoc punctiforme were discovered and their pronounced impact on the regulation of specialized metabolism was demonstrated. Through transcriptional, bioinformatic, and labeling studies, two adjacent biosynthetic gene clusters were assigned to the biosynthesis of these two polyketide mediators. These findings provide insight into the orchestration of specialized metabolite production and offer lessons for the genomic mining and high-titer production of cyanobacterial bioactive compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Multidisciplinary Sciences
Jialiang Wang, Jingdan Liang, Lu Chen, Wei Zhang, Liangliang Kong, Chao Peng, Chen Su, Yi Tang, Zixin Deng, Zhijun Wang
Summary: Statins, effective cholesterol-lowering drugs, depend on a megasynthase complex for biosynthesis. CryoEM structures of LovB-LovC and core LovB provide insights into the catalytic cycle for lovastatin production.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Yifei Liu, Bo Wang, Shaohua Shu, Zheng Li, Chi Song, Di Liu, Yan Niu, Jinxin Liu, Jingjing Zhang, Heping Liu, Zhigang Hu, Bisheng Huang, Xiuyu Liu, Wei Liu, Liping Jiang, Mohammad Murtaza Alami, Yuxin Zhou, Yutao Ma, Xiangxiang He, Yicheng Yang, Tianyuan Zhang, Hui Hu, Michael S. Barker, Shilin Chen, Xuekui Wang, Jing Nie
Summary: Chinese goldthread (Coptis chinensis) is an early-diverging eudicot plant with diverse medicinal applications. The high-quality genome assembly and annotation of C. chinensis revealed a single ancient whole-genome duplication event shared by the Ranunculaceae family. The study also highlighted the functional importance of CYP719 gene in diversifying protoberberine-type alkaloids.
NATURE COMMUNICATIONS
(2021)
Article
Marine & Freshwater Biology
Vanessa Virginia Barbosa, Ranielle Daiana dos Santos Silva, Juliana dos Santos Severiano, Mathias Ahii Chia, Jose Etham de Lucena Barbosa
Summary: Investigations on the influence of green microalgae associated with cyanobacteria exposure to macrophytes and the production of cyanotoxins have not been previously explored. The effects of the presence of live plants and extracts of the Egeria densa, on the growth and saxitoxin production of Raphidiopsis raciborskii were investigated in the presence and absence of Chlorella vulgaris. The physical presence of the macrophyte reduced the biovolume of the cyanobacterium and its production of saxitoxins, while cultures exposed to aqueous extract had elevated saxitoxin levels. The green microalgae also increased the amount of cyanotoxins, especially when the macrophyte biomass was low. These findings suggest that E. densa can inhibit the growth of R. raciborskii and the production of cyanotoxins and that the presence of C. vulgaris can alter these processes.
Article
Plant Sciences
Chin-Soon Phan, Jakia Jerin Mehjabin, Andrea Roxanne J. Anas, Masahiro Hayasaka, Reiko Onoki, Juting Wang, Taiki Umezawa, Kenji Washio, Masaaki Morikawa, Tatsufumi Okino
Summary: Chemical investigation of the cyanobacterium Dolichospermum sp. NIES-1697 resulted in the discovery of two new compounds, nostosin G (1) and spiroidesin B (2), which were characterized and studied for their structure and biosynthesis.
JOURNAL OF NATURAL PRODUCTS
(2022)
Article
Multidisciplinary Sciences
Christopher J. Gisriel, Eduard Elias, Gaozhong Shen, Nathan T. Soulier, David A. Flesher, M. R. Gunner, Gary W. Brudvig, Roberta Croce, Donald A. Bryant
Summary: To adapt to low-light environments, some cyanobacteria express a variant of the light-harvesting protein allophycocyanin (AP) that strongly absorbs far-red light (FRL). The structure-function relationship of this FRL-AP complex, expressed during acclimation to low light, was revealed using cryo-electron microscopy and time-resolved absorption spectroscopy. FRL-AP forms helical nanotubes instead of typical toroids due to altered domain geometry within each subunit. This study expands the understanding of light-harvesting proteins in nature and highlights the trade-off between resource accessibility and efficiency achieved through biological plasticity.
Article
Cell Biology
Juliana Gusson Roscito, Katrin Sameith, Bogdan Mikhailovich Kirilenko, Nikolai Hecker, Sylke Winkler, Andreas Dahl, Miguel Trefaut Rodrigues, Michael Hiller
Summary: A comparative genomic analysis of limbless reptiles reveals that shared divergence occurs more often at the level of signaling pathways and patterning mechanisms, rather than in individual limb regulatory elements. Different mechanisms, such as different regulatory elements associated with the same limb genes and/or patterning mechanisms, may contribute to limb loss in reptiles.
Article
Plant Sciences
Kentaro Usui, Haruki Yamamoto, Takao Oi, Mitsutaka Taniguchi, Hitoshi Mori, Yuichi Fujita
Summary: This study demonstrated that extracellular vesicles mediate the secretion of Pchlide in YFC2 cells grown in the dark. Pchlide fractions were isolated using sucrose density gradient centrifugation, and mass spectrometry analysis revealed the presence of porin isoforms, TolC, and FG-GAP repeat-containing protein in the fractions, which are localized in the outer membrane.
Article
Microbiology
Beatrice Roche, Mariel A. Garcia-Rivera, Vincent Normant, Lauriane Kuhn, Philippe Hammann, Mark Bronstrup, Gaetan L. A. Mislin, Isabelle J. Schalk
Summary: The study revealed the role of PchHI as the heterodimeric ABC transporter in mediating siderophore-free iron uptake into the bacterial cytoplasm. Additionally, it was found for the first time that PCH can reach the bacterial periplasm and cytoplasm when both FptA and FptX are expressed. Furthermore, an interaction between PchH and FptX was detected, linking the ABC transporter PchHI with the inner permease FptX in the PCH-Fe uptake pathway.
ENVIRONMENTAL MICROBIOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Luca Giannella, Jacopo Di Giuseppe, Giovanni Delli Carpini, Camilla Grelloni, Mariasole Fichera, Gianmarco Sartini, Serena Caimmi, Leonardo Natalini, Andrea Ciavattini
Summary: Cervical cancer is a major cause of death in women, particularly in developing countries. Cervical adenocarcinoma, a subtype of the disease, often presents at an advanced stage and has a poorer prognosis compared to squamous lesions. Treatment options and the impact of HPV vaccination and screening in managing these lesions require further investigation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Marine & Freshwater Biology
Xin Chen, Tiantong Qiu, Peng Xiao, Wenhua Li
Summary: Isoflucypram has been found to have teratogenic effects on retinogenesis in zebrafish, causing abnormalities in retinal development and increased retinal cell apoptosis. This SDHI fungicide also demonstrates toxic effects on non-target aquatic organisms, highlighting the need for further investigation.
AQUATIC TOXICOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Tiantong Qiu, Xin Chen, Peng Xiao, Liqiang Wang, Wenhua Li
Summary: In this study, the potential toxicity and underlying mechanisms of FLU on aquatic organisms were investigated using zebrafish embryos as a model organism. The results showed that FLU can cause microphthalmia in zebrafish embryos by inducing retinal cell apoptosis, indicating its developmental toxicity.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2022)
Article
Environmental Sciences
Qi Cao, Gongliang Yu, Shengjie Sun, Yong Dou, Hua Li, Zhiyi Qiao
Summary: The combination of hyperspectral remote sensing and BP neural networks is used to monitor water quality in the Haihe River. The results show that this method is accurate and feasible, providing decision-makers with real-time information on water quality parameters.
Article
Environmental Sciences
Peng Xiao, Wenhua Li, Jinfang Lu, He Zhang
Summary: In this study, the adverse effects of amisulbrom and isoflucypram on zebrafish embryogenesis were investigated. Transcriptome sequencing analysis revealed differentially expressed genes (DEGs) after exposure to the fungicides. Enrichment analysis identified important signaling pathways and metabolic pathways. These findings provide novel insights into the toxicological mechanisms underlying fish's responses to fungicides.
Article
Biodiversity Conservation
Ruozhen Geng, Wenke Li, Aimin Chao, Xiaoyu Guo, Hua Li, Gongliang Yu, Renhui Li
Summary: Taxonomic studies on cyanobacteria using modern approaches have led to the discovery of many new genera and species. A new filamentous cyanobacterial genus, Microcoleusiopsis, was identified during field surveys in China, isolated from microbial mats on rock surfaces in Jiangxi Province.
Article
Limnology
Fangfang Cai, Gongliang Yu, Renhui Li
Summary: Two cyanobacterial strains were isolated from different habitats in China, and were identified as new species of the genus Pseudoaliinostoc based on morphological, ecological, and molecular data. These new species were named P. jiangxiense and P. yunnanense.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2022)
Article
Environmental Sciences
Shanshan Guo, Yaqing Wu, Peng Xiao, Wenhua Li
Summary: In this study, the toxic effects of Benfuracarb (BEN) on zebrafish were investigated. The results showed that BEN exposure caused shorter body length in zebrafish larvae, increased activity of superoxide dismutase (SOD), and disruption of marker gene transcription levels associated with early embryonic development.
Article
Biochemistry & Molecular Biology
Hang Zhang, Yongguang Jiang, Chi Zhou, Youxin Chen, Gongliang Yu, Liping Zheng, Honglin Guan, Renhui Li
Summary: This study confirmed the presence of MAAs in Aphanizomenon flos-aquae and Aphanizomenon gracile. The concentration of shinorine in Aphanizomenon flos-aquae was higher than that in Aphanizomenon gracile strains.
Article
Biodiversity Conservation
Fangfang Cai, Shuheng Li, Hang Zhang, Gongliang Yu, Renhui Li
Summary: A new species of cyanobacteria, Nodosilinea hunanesis, was isolated from a freshwater pond in Zhangjiajie National Forest Park, China. It was characterized through a polyphasic study and found to be distinct from other known Nodosilinea species based on morphological, ecological, and molecular data.
Article
Environmental Sciences
Zhe Xiao, Hua Li, Xiao-Chuang Li, Ren-Hui Li, Shou-Liang Huo, Gong-Liang Yu
Summary: Disentangling the contributions of deterministic and stochastic processes is crucial for understanding the geographic pattern and assembly mechanism of phytoplankton community. In this study, we investigated phytoplankton community in 81 lakes in the middle and lower reaches of Yangtze River. We found that both deterministic and stochastic processes governed the assembly and biogeography of phytoplankton community. Spatial factors had a stronger influence on the community compared to environmental variables. These findings suggest that stochastic processes play a dominant role in shaping the phytoplankton community in these lakes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Mantang Xiong, Ruojing Li, Tanglin Zhang, Chuansong Liao, Gongliang Yu, Jing Yuan, Jiashou Liu, Shaowen Ye
Summary: This study examined the composition and dynamics of zooplankton in the Danjiangkou Reservoir in China. It found significant changes in zooplankton compositions among different months and their correlation with water trophic states. The zooplankton community structure was characterized by low diversity and high evenness. Compared to historical studies, the biomass of zooplankton in the reservoir has increased significantly, while the abundance showed a decreasing trend.
Article
Limnology
Qianzhi Wen, Peng Xiao, Hua Li, Wenke Li, Gongliang Yu, Renhui Li
Summary: Cyanobacterial blooms pose a serious threat to water quality management and public health. Aphanizomenon, a common harmful genus, frequently competes with Microcystis in natural lakes. Temperature was found to be the dominant factor in determining the competitive relationship between Aphanizomenon and Microcystis.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2022)
Article
Environmental Sciences
Jing Qian, Hongbo Liu, Li Qian, Jonas Bauer, Xiaobai Xue, Gongliang Yu, Qiang He, Qi Zhou, Yonghong Bi, Stefan Norra
Summary: Accurate monitoring and assessment of the environmental state is crucial for improved action. This study developed an integrated framework using remote sensing technology, cruise monitoring technology, and deep learning to achieve robust performance in environmental monitoring and assessment. The deep neural network showed better performance compared to traditional machine learning methods, and water quality assessment was achieved using improved deep embedding clustering.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Review
Environmental Sciences
Qi Cao, Gongliang Yu, Zhiyi Qiao
Summary: Hyperspectral remote sensing, widely used for inland water quality detection, provides real-time data with a noncontact method, improving efficiency. Spaceborne remote sensing has been the focus, but near-surface remote sensing is being applied to small waterbodies. Future research may focus on multiplatform linkage monitoring. Machine learning models are more robust for water quality parameter inversion.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Limnology
Yuanyuan Mo, Wenjing Zhang, David M. Wilkinson, Zheng Yu, Peng Xiao, Jun Yang
Summary: Recent research has significantly expanded our understanding of microbial metacommunities in aquatic ecosystems, particularly focusing on the biogeography and co-occurrence patterns of generalists and specialists marine bacteria in subtropical bays of China. The study revealed that deterministic processes, such as variable selection, played a primary role in shaping the distribution and assembly of bacterial communities, with specialists showing a higher reliance on deterministic processes compared to generalists. The complex and stable co-occurrence patterns between generalists and specialists are likely driven by these deterministic processes, indicating the importance of considering ecological mechanisms in bacterial biogeography and co-existence patterns.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
