FEMS microbesPub Date : 2024-02-12eCollection Date: 2024-01-01DOI: 10.1093/femsmc/xtae002
Teresia M Njoroge, May R Berenbaum, Christopher M Stone, Chang-Hyun Kim, Christopher Dunlap, Ephantus J Muturi
{"title":"<i>Culex pipiens</i> and <i>Culex restuans</i> larval interactions shape the bacterial communities in container aquatic habitats.","authors":"Teresia M Njoroge, May R Berenbaum, Christopher M Stone, Chang-Hyun Kim, Christopher Dunlap, Ephantus J Muturi","doi":"10.1093/femsmc/xtae002","DOIUrl":"10.1093/femsmc/xtae002","url":null,"abstract":"<p><p>Container aquatic habitats host a community of aquatic insects, primarily mosquito larvae that browse on container surface microbial biofilm and filter-feed on microorganisms in the water column. We examined how the bacterial communities in these habitats respond to feeding by larvae of two container-dwelling mosquito species, <i>Culex pipiens</i> and <i>Cx. restuans</i>. We also investigated how the microbiota of these larvae is impacted by intra- and interspecific interactions. Microbial diversity and richness were significantly higher in water samples when mosquito larvae were present, and in <i>Cx. restuans</i> compared to <i>Cx. pipiens</i> larvae. Microbial communities of water samples clustered based on the presence or absence of mosquito larvae and were distinct from those of mosquito larvae. <i>Culex pipiens</i> and <i>Cx. restuans</i> larvae harbored distinct microbial communities when reared under intraspecific conditions and similar microbial communities when reared under interspecific conditions. These findings demonstrate that mosquito larvae play a major role in structuring the microbial communities in container habitats and that intra- and interspecific interactions in mosquito larvae may shape their microbiota. This has important ecological and public health implications since larvae of the two mosquito species are major occupants of container habitats while the adults are vectors of West Nile virus.</p>","PeriodicalId":73024,"journal":{"name":"FEMS microbes","volume":"5 ","pages":"xtae002"},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10917442/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140051240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
FEMS microbesPub Date : 2024-01-03DOI: 10.1093/femsmc/xtad025
Nancy Bhagat, J. Vakhlu
{"title":"Effects of biocontrol Bacillus sp. strain D5 on the pathogenic Fusarium oxysporum R1 at the microscopic and molecular level in Crocus sativus L. (saffron) corm","authors":"Nancy Bhagat, J. Vakhlu","doi":"10.1093/femsmc/xtad025","DOIUrl":"https://doi.org/10.1093/femsmc/xtad025","url":null,"abstract":"\u0000 Corm rot of saffron caused by Fusarium oxysporum is a major threat to saffron cultivation the world over. To minimize the ill effects of chemical fungicides, attention has been shifted to the use of biocontrol agents for disease management in a sustainable way. In saffron, various biocontrol agents against corm rot disease have been reported and characterized but no study has been done so far to understand their interaction at the molecular level. The present study was conducted to unravel the mechanism of action of an already characterized native biocontrol agent i.e. Bacillus sp. strain D5 (Bar D5) against Fusarium oxsporum R1 (Fox R1) in the saffron corm. The growth inhibition of Fox R1 was observed in-vitro and in-planta (saffron corm) by real time imaging. Bacillus sp. strain D5 reduced Fox R1 load in infected corms by 50% as quantified by q-PCR and the colony-forming unit method. Comparative transcriptome analysis revealed up-regulation and down-regulation of various Fox R1 genes in presence of Bar D5. The genes related to carbon metabolism, cell wall & membrane synthesis, and growth of Fox R1 were significantly down-regulated in Bar D5 primed and Fox R1 inoculated corms as compared to only Fox R1 inoculated corms.","PeriodicalId":73024,"journal":{"name":"FEMS microbes","volume":"45 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139451939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
FEMS microbesPub Date : 2023-12-14DOI: 10.1093/femsmc/xtad024
S. Halary, C. Duval, Benjamin Marie, Cécile Bernard, B. Piquet, Olivier Gros, M. Bourguet-Kondracki, S. Duperron
{"title":"Genomes of nine biofilm-forming filamentous strains of Cyanobacteria (genera Jaaginema, Scytonema and Karukerafilum gen. nov.) isolated from mangrove habitats of Guadeloupe (Lesser Antilles)","authors":"S. Halary, C. Duval, Benjamin Marie, Cécile Bernard, B. Piquet, Olivier Gros, M. Bourguet-Kondracki, S. Duperron","doi":"10.1093/femsmc/xtad024","DOIUrl":"https://doi.org/10.1093/femsmc/xtad024","url":null,"abstract":"\u0000 Biofilm-forming cyanobacteria are abundant in mangrove ecosystems, colonizing various niches including sediment surface and periphyton where they can cover large areas, yet have received limited attention. Several filamentous isolates were recently isolated from Guadeloupe, illustrating the diversity and novelty present in these biofilms. In this study, nine strains belonging to three novel lineages found abundantly in Guadeloupe biofilms are characterized by genome sequencing, morphological and ultrastructural examination, metabolome fingerprinting and searched for secondary metabolites biosynthesis pathways. Assignation of two lineages to known genera is confirmed, namely Scytonema and Jaaginema. The third lineage corresponds to a new Coleofasciculales genus herein described as Karukerafilum gen. nov. The four strains belonging to this genus group into two subclades, one of which displays genes necessary for nitrogen fixation as well as the complete pathway for geosmin production. This study gives new insights into the diversity of mangrove biofilm-forming cyanobacteria, including genome-based description of a new genus and the first genome sequence available for the genus Jaaginema.","PeriodicalId":73024,"journal":{"name":"FEMS microbes","volume":"2019 47","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139002001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
FEMS microbesPub Date : 2023-12-14DOI: 10.1093/femsmc/xtad023
Tahsin Khan, Weizhi Song, J. Nappi, E. Marzinelli, S. Egan, Torsten Thomas
{"title":"Functional guilds and drivers of diversity in seaweed-associated bacteria","authors":"Tahsin Khan, Weizhi Song, J. Nappi, E. Marzinelli, S. Egan, Torsten Thomas","doi":"10.1093/femsmc/xtad023","DOIUrl":"https://doi.org/10.1093/femsmc/xtad023","url":null,"abstract":"\u0000 Comparisons of functional and taxonomic profiles from bacterial communities in different habitats have suggested the existence of functional guilds composed of taxonomically or phylogenetically distinct members. Such guild membership is, however, rarely defined and the factors that drive functional diversity in bacteria remain poorly understood. We used seaweed-associated bacteria as a model to shed light on these important aspects of community ecology. Using a large dataset of over 1300 metagenome-assembled genomes from 13 seaweed species we found substantial overlap in the functionality of bacteria coming from distinct taxa, thus supporting the existence of functional guilds. This functional equivalence between different taxa was particularly pronounced when only functions involved in carbohydrate-degradation were considered. We further found that bacterial taxonomy is the dominant driver of functional differences between bacteria and that seaweed species or seaweed type (i.e. brown, red and green) had relatively stronger impacts on genome functionality for carbohydrate-degradation functions when compared to all other cellular functions. This study provides new insight into the factors underpinning the functional diversity of bacteria and contributes to our understanding how community function is generated from individual members.","PeriodicalId":73024,"journal":{"name":"FEMS microbes","volume":"92 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139001842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Antibacterial activity of solid surfaces is critically dependent on relative humidity, inoculum volume, and organic soiling.","authors":"Harleen Kaur, Merilin Rosenberg, Mati Kook, Dmytro Danilian, Vambola Kisand, Angela Ivask","doi":"10.1093/femsmc/xtad022","DOIUrl":"10.1093/femsmc/xtad022","url":null,"abstract":"<p><p>Antimicrobial surface materials potentially prevent pathogen transfer from contaminated surfaces. Efficacy of such surfaces is assessed by standard methods using wet exposure conditions known to overestimate antimicrobial activity compared to dry exposure. Some dry test formats have been proposed but semi-dry exposure scenarios e.g. oral spray or water droplets exposed to ambient environment, are less studied. We aimed to determine the impact of environmental test conditions on antibacterial activity against the model species <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. Surfaces based on copper, silver, and quaternary ammonium with known or claimed antimicrobial properties were tested in conditions mimicking microdroplet spray or larger water droplets exposed to variable relative air humidity in the presence or absence of organic soiling. All the environmental parameters critically affected antibacterial activity of the tested surfaces from no effect in high-organic dry conditions to higher effect in low-organic humid conditions but not reaching the effect size demonstrated in the ISO 22169 wet format. Copper was the most efficient antibacterial surface followed by silver and quaternary ammonium based coating. Antimicrobial testing of surfaces using small droplet contamination in application-relevant conditions could therefore be considered as one of the worst-case exposure scenarios relevant to dry use surfaces.</p>","PeriodicalId":73024,"journal":{"name":"FEMS microbes","volume":"5 ","pages":"xtad022"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10781430/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139426143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
FEMS microbesPub Date : 2023-11-28DOI: 10.1093/femsmc/xtad021
A. Dungan, Kshitij Tandon, Vanta J Jameson, Cecilie Ravn Gotze, L. Blackall, Madeleine J. H. van Oppen
{"title":"A targeted approach to enrich host-associated bacteria for metagenomic sequencing","authors":"A. Dungan, Kshitij Tandon, Vanta J Jameson, Cecilie Ravn Gotze, L. Blackall, Madeleine J. H. van Oppen","doi":"10.1093/femsmc/xtad021","DOIUrl":"https://doi.org/10.1093/femsmc/xtad021","url":null,"abstract":"Multicellular eukaryotic organisms are hosts to communities of bacteria that reside on or inside their tissues. Often the eukaryotic members of the system contribute to high proportions of metagenomic sequencing reads, making it challenging to achieve sufficient sequencing depth to evaluate bacterial ecology. Stony corals are one such complex community; however, separation of bacterial from eukaryotic (primarily coral and algal symbiont) cells has so far not been successful. Using a combination of hybridization chain reaction fluorescence in situ hybridization and fluorescence activated cell sorting (HCR-FISH + FACS), we sorted two populations of bacteria from five genotypes of the coral Acropora loripes, targeting 1) Endozoicomonas spp, and 2) all other bacteria. NovaSeq sequencing resulted in 67-91 M reads per sample, 55–90% of which were identified as bacterial. Most reads were taxonomically assigned to the key coral-associated family, Endozoicomonadaceae, with Vibrionaceae also abundant. Endozoicomonadaceae were 5x more abundant in the ‘Endozoicomonas’ population, highlighting the success of the dual-labelling approach. This method effectively enriched coral samples for bacteria with <1% contamination from host and algal symbionts. The application of this method will allow researchers to decipher the functional potential of coral-associated bacteria. This method can also be adapted to accommodate other host-associated communities.","PeriodicalId":73024,"journal":{"name":"FEMS microbes","volume":"20 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139226376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"ynamics of <i>Thioalkalivibrio</i> species in a co-culture under selective pressure of ampicillin","authors":"Anne-Catherine Ahn, J Merijn Schuurmans, Dimitry Sorokin, Gerard Muyzer","doi":"10.1093/femsmc/xtad020","DOIUrl":"https://doi.org/10.1093/femsmc/xtad020","url":null,"abstract":"Abstract Haloalkaliphilic chemolithoautotrophic sulfur-oxidizing bacteria belonging to the genus Thioalkalivibrio are highly abundant in microbial communities found in soda lakes and dominant in full-scale bioreactors removing sulfide from industrial waste gases. Despite certain soda lakes being remote and unaffected by anthropogenic activities, haloalkaliphilic microorganisms, including Thioalkalivibrio strains, possess various antibiotic resistance genes. In this study, we investigated the impact of the antibiotic ampicillin on a co-culture of two Thioalkalivibrio species, Tv. thiocyanoxidans ARh2T and Tv. versutus AL2T, both experimentally and through in silico analysis of antibiotic resistance. Cell growth dynamics were monitored over time at increasing ampicillin concentrations using rep- and qPCR. Within ten days after the addition of ampicillin, the co-culture transitioned from a Tv. thiocyanoxidans ARh2T-dominated to a stable Tv. versutus AL2T-dominated culture. This shift was attributed to Tv. versutus AL2T displaying a lower susceptibility to ampicillin, making it more competitive. These results emphasize the potential implications of antibiotic pressure on microbial communities, where a resistant species can outcompete a stable co-culture. This study presents the first evidence of such dynamics in haloalkaliphilic chemolithoautotrophs. By understanding the antibiotic resistance and the competitive dynamics of haloalkaliphilic bacteria like Thioalkalivibrio, we can gain insights into their behaviour and stress response.","PeriodicalId":73024,"journal":{"name":"FEMS microbes","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135430049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
FEMS microbesPub Date : 2023-10-11eCollection Date: 2023-01-01DOI: 10.1093/femsmc/xtad019
Patrick Hsien-Neng Kao, Jun-Hong Ch'ng, Kelvin K L Chong, Claudia J Stocks, Siu Ling Wong, Kimberly A Kline
{"title":"<i>Enterococcus faecalis</i> suppresses <i>Staphylococcus aureus</i>-induced NETosis and promotes bacterial survival in polymicrobial infections.","authors":"Patrick Hsien-Neng Kao, Jun-Hong Ch'ng, Kelvin K L Chong, Claudia J Stocks, Siu Ling Wong, Kimberly A Kline","doi":"10.1093/femsmc/xtad019","DOIUrl":"https://doi.org/10.1093/femsmc/xtad019","url":null,"abstract":"<p><p><i>Enterococcus faecalis</i> is an opportunistic pathogen that is frequently co-isolated with other microbes in wound infections. While <i>E. faecalis</i> can subvert the host immune response and promote the survival of other microbes via interbacterial synergy, little is known about the impact of <i>E. faecalis</i>-mediated immune suppression on co-infecting microbes. We hypothesized that <i>E. faecalis</i> can attenuate neutrophil-mediated responses in mixed-species infection to promote survival of the co-infecting species. We found that neutrophils control <i>E. faecalis</i> infection via phagocytosis, ROS production, and degranulation of azurophilic granules, but it does not trigger neutrophil extracellular trap formation (NETosis). However, <i>E. faecalis</i> attenuates <i>Staphylococcus aureus</i>-induced NETosis in polymicrobial infection by interfering with citrullination of histone, suggesting <i>E. faecalis</i> can actively suppress NETosis in neutrophils. Residual <i>S. aureus</i>-induced NETs that remain during co-infection do not impact <i>E. faecalis</i>, further suggesting that <i>E. faecalis</i> possess mechanisms to evade or survive NET-associated killing mechanisms. <i>E. faecalis</i>-driven reduction of NETosis corresponds with higher <i>S. aureus</i> survival, indicating that this immunomodulating effect could be a risk factor in promoting the virulence polymicrobial infection. These findings highlight the complexity of the immune response to polymicrobial infections and suggest that attenuated pathogen-specific immune responses contribute to pathogenesis in the mammalian host.</p>","PeriodicalId":73024,"journal":{"name":"FEMS microbes","volume":"4 ","pages":"xtad019"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10608956/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71415699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
FEMS microbesPub Date : 2023-10-06eCollection Date: 2023-01-01DOI: 10.1093/femsmc/xtad018
Tawanda Proceed Makopa, Gorata Modikwe, Urska Vrhovsek, Cesare Lotti, José Paulo Sampaio, Nerve Zhou
{"title":"The <i>marula</i> and elephant intoxication myth: assessing the biodiversity of fermenting yeasts associated with marula fruits (<i>Sclerocarya birrea</i>).","authors":"Tawanda Proceed Makopa, Gorata Modikwe, Urska Vrhovsek, Cesare Lotti, José Paulo Sampaio, Nerve Zhou","doi":"10.1093/femsmc/xtad018","DOIUrl":"https://doi.org/10.1093/femsmc/xtad018","url":null,"abstract":"<p><p>The inebriation of wild African elephants from eating the ripened and rotting fruit of the marula tree is a persistent myth in Southern Africa. However, the yeasts responsible for alcoholic fermentation to intoxicate the elephants remain poorly documented. In this study, we considered Botswana, a country with the world's largest population of wild elephants, and where the marula tree is indigenous, abundant and protected, to assess the occurrence and biodiversity of yeasts with a potential to ferment and subsequently inebriate the wild elephants. We collected marula fruits from over a stretch of 800 km in Botswana and isolated 106 yeast strains representing 24 yeast species. Over 93% of these isolates, typically known to ferment simple sugars and produce ethanol comprising of high ethanol producers belonging to <i>Saccharomyces, Brettanomyces</i>, and <i>Pichia</i>, and intermediate ethanol producers <i>Wickerhamomyces, Zygotorulaspora, Candida, Hanseniaspora</i>, and <i>Kluyveromyces</i>. Fermentation of marula juice revealed convincing fermentative and aromatic bouquet credentials to suggest the potential to influence foraging behaviour and inebriate elephants in nature. There is insufficient evidence to refute the aforementioned myth. This work serves as the first work towards understanding the biodiversity marula associated yeasts to debunk the myth or approve the facts.</p>","PeriodicalId":73024,"journal":{"name":"FEMS microbes","volume":"4 ","pages":"xtad018"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/6a/53/xtad018.PMC10581541.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49685739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Biotechnological potential of microbial bio-surfactants, their significance, and diverse applications.","authors":"Renuka Kumari, Lairenjam Paikhomba Singha, Pratyoosh Shukla","doi":"10.1093/femsmc/xtad015","DOIUrl":"10.1093/femsmc/xtad015","url":null,"abstract":"<p><p>Globally, there is a huge demand for chemically available surfactants in many industries, irrespective of their detrimental impact on the environment. Naturally occurring green sustainable substances have been proven to be the best alternative for reducing reliance on chemical surfactants and promoting long-lasting sustainable development. The most frequently utilized green active biosurfactants, which are made by bacteria, yeast, and fungi, are discussed in this review. These biosurfactants are commonly originated from contaminated sites, the marine ecosystem, and the natural environment, and it holds great potential for environmental sustainability. In this review, we described the importance of biosurfactants for the environment, including their biodegradability, low toxicity, environmental compatibility, and stability at a wide pH range. In this review, we have also described the various techniques that have been utilized to characterize and screen the generation of microbial biosurfactants. Also, we reviewed the potential of biosurfactants and its emerging applications in the foods, cosmetics, pharmaceuticals, and agricultural industries. In addition, we also discussed the ways to overcome problems with expensive costs such as low-cost substrate media formulation, gravitational techniques, and solvent-free foam fractionation for extraction that could be employed during biosurfactant production on a larger scale.</p>","PeriodicalId":73024,"journal":{"name":"FEMS microbes","volume":"4 ","pages":"xtad015"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10442721/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10063587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}