Intracellular and Extracellular Bacterial Biomineralization

Jroundi, Fadwa; Merroun, Mohamed L.; Martı́nez-Ruiz, Francisca; González‐Muñoz, María Teresa

doi:10.1007/978-3-030-80807-5_2

Cited by 4 publications

(7 citation statements)

References 95 publications

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“…When exploring the spatial co-occurrence patterns of microbial assemblages between study zones, two distinct module hubs (regions densely connected) were clearly observed in both MB and OL networks, indicating that habitat significantly influenced the microbial co-occurrence networks (Cui et al, 2019;Felipe-Lucia et al, 2020). In fact, the habitat preference of microorganisms may play a vital role in determining their co-occurrence patterns (Chaffron et al, 2010;Jroundi et al, 2020). It was found that the microbial network in the OL benthic zone showed higher complexity (given the value of modularity) compared to the MB (as described in the results).…”

Section: Spatial Co-occurrence Patterns Of Benthic Microbial Assemblagesmentioning

confidence: 71%

“…In this context, regular assessment to control metal pollution in the coastal environment is recommended (Cyriac et al, 2021). Moreover, marine sediments under high anthropogenic pressure constantly increase HM concentrations, which may lead to significant additional pollution (Jacquiod et al, 2018;Jroundi et al, 2020).…”

Section: Integrated Influence Of the Environmental Heterogeneity-driv...mentioning

confidence: 99%

“…Based on several active bacteria detected, such as Burkholderia, Campylobacter, Clostridium, Enterobacter and Pseudomonas groups, which are resistant to various antibiotics, the influence of MB environment is also of concern Mainly due to pose a serious threat to global human, animal, and environmental health, a concern recognized by numerous important organizations such as the World Health Organization (Aslam et al, 2018;Miranda et al, 2018). However, the above differential assemblage compositions among study zones also suggest the cooperation between all organisms, potentially translating into success of the whole ecosystem (Cardoso et al, 2017), because they reveal the performed functions that are either similar or complementary to each other and may co-occur due to shared and preferred environmental conditions (Jroundi et al, 2020).…”

Section: Spatial Co-occurrence Patterns Of Benthic Microbial Assemblagesmentioning

confidence: 99%

“…One explanation for the high spatial connectivity and the selection of the microbe pool in the coastal area surrounding the OL may also be attributed to the Loa River, which acts as a true green/life corridor that runs across the hyper-arid core of the Atacama Desert also known as the dry limit for life on Earth, helping to establish specific networks (Zárate et al, 2020). In this way, the input may support a distinct set of microbial processes that remain unstudied (Fortunato et al, 2012;Fazi et al, 2020;Jroundi et al, 2020).…”

Section: Spatial Co-occurrence Patterns Of Benthic Microbial Assemblagesmentioning

confidence: 99%

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Spatial co-occurrence patterns of benthic microbial assemblage in response to trace metals in the Atacama Desert Coastline

et al. 2023

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Taxonomic and functional microbial communities may respond differently to anthropogenic coastal impacts, but ecological quality monitoring assessments using environmental DNA and RNA (eDNA/eRNA) in response to pollution are poorly understood. In the present study, we investigated the utility of the co-occurrence network approach’s to comprehensively explore both structure and potential functions of benthic marine microbial communities and their responses to Cu and Fe fractioning from two sediment deposition coastal zones of northern Chile via 16S rRNA gene metabarcoding. The results revealed substantial differences in the microbial communities, with the predominance of two distinct module hubs based on study zone. This indicates that habitat influences microbial co-occurrence networks. Indeed, the discriminant analysis allowed us to identify keystone taxa with significant differences in eDNA and eRNA comparison between sampled zones, revealing that Beggiatoaceae, Carnobacteriaceae, and Nitrosococcaceae were the primary representatives from Off Loa, whereas Enterobacteriaceae, Corynebacteriaceae, Latescibacteraceae, and Clostridiaceae were the families responsible for the observed changes in Mejillones Bay. The quantitative evidence from the multivariate analyses supports that the benthic microbial assemblages’ features were linked to specific environments associated with Cu and Fe fractions, mainly in the Bay. Furthermore, the predicted functional microbial structure suggested that transporters and DNA repair allow the communities to respond to metals and endure the interacting variable environmental factors like dissolved oxygen, temperature, and salinity. Moreover, some active taxa recovered are associated with anthropogenic impact, potentially harboring antibiotic resistance and other threats in the coastal zone. Overall, the method of scoping eRNA in parallel with eDNA applied here has the capacity to significantly enhance the spatial and functional understanding of real-time microbial assemblages and, in turn, would have the potential to increase the acuity of biomonitoring programs key to responding to immediate management needs for the marine environment.

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Section: Spatial Co-occurrence Patterns Of Benthic Microbial Assemblagesmentioning

confidence: 71%

Section: Integrated Influence Of the Environmental Heterogeneity-driv...mentioning

confidence: 99%

Section: Spatial Co-occurrence Patterns Of Benthic Microbial Assemblagesmentioning

confidence: 99%

Section: Spatial Co-occurrence Patterns Of Benthic Microbial Assemblagesmentioning

confidence: 99%

See 2 more Smart Citations

Spatial co-occurrence patterns of benthic microbial assemblage in response to trace metals in the Atacama Desert Coastline

et al. 2023

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“…The genus Microlunatus (Actinobacteria) has been previously reported in Mycocepurus smithii ants (Kellner et al, 2015), a fungus-farming ant reported to acquire its microbiome from the surrounding environment. Bacteria from this genus have been found in deep-sea sediments (Jroundi et al, 2020) to rhizospheric soil (Wang et al, 2008), and it has been indicated that they have the potential for pollution management (Zhang et al, 2017), especially for capabilities of phosphorus accumulation (Zhong et al, 2018). Microbacteriaceae is a family of Gram-positive bacteria with members that have been reported among the dominant cellulase-producing strains isolated from yellow stem borers (Scirpophaga incertulas; Bashir et al, 2013), but in much less proportion in the guts of termites at the same study identified as Odontotermes hainanensis, which were feeding on decomposed trees and leaf litter.…”

Section: Shotgun Metagenomic Sequencingmentioning

confidence: 99%

The tropical cookbook: Termite diet and phylogenetics—Over geographical origin—Drive the microbiome and functional genetic structure of nests

Plaza

Hradecký

2023

Front. Microbiol.

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Termites are key decomposers of dead plant material involved in the organic matter recycling process in warm terrestrial ecosystems. Due to their prominent role as urban pests of timber, research efforts have been directed toward biocontrol strategies aimed to use pathogens in their nest. However, one of the most fascinating aspects of termites is their defense strategies that prevent the growth of detrimental microbiological strains in their nests. One of the controlling factors is the nest allied microbiome. Understanding how allied microbial strains protect termites from pathogen load could provide us with an enhanced repertoire for fighting antimicrobial-resistant strains or mining for genes for bioremediation purposes. However, a necessary first step is to characterize these microbial communities. To gain a deeper understanding of the termite nest microbiome, we used a multi-omics approach for dissecting the nest microbiome in a wide range of termite species. These cover several feeding habits and three geographical locations on two tropical sides of the Atlantic Ocean known to host hyper-diverse communities. Our experimental approach included untargeted volatile metabolomics, targeted evaluation of volatile naphthalene, a taxonomical profile for bacteria and fungi through amplicon sequencing, and further diving into the genetic repertoire through a metagenomic sequencing approach. Naphthalene was present in species belonging to the genera Nasutitermes and Cubitermes. We investigated the apparent differences in terms of bacterial community structure and discovered that feeding habits and phylogenetic relatedness had a greater influence than geographical location. The phylogenetic relatedness among nests' hosts influences primarily bacterial communities, while diet influences fungi. Finally, our metagenomic analysis revealed that the gene content provided both soil-feeding genera with similar functional profiles, while the wood-feeding genus showed a different one. Our results indicate that the nest functional profile is largely influenced by diet and phylogenetic relatedness, irrespective of geographical location.

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Microbial bio‐film calcite mediated removal of heavy metals from industrial wastewater of Kasur, Pakistan

2023

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Heavy metals in the industrial wastewater are an area of great concern as act as source of bioaccumulation in edible plants and posing a major health risk to humans like cancers. This study was planned by exploiting the bio‐film producing microbes that have the potential to remediate heavy metals by calcite mediated removal from industrial wastewater. Samples (n = 10) from a marble factory wastewater were collected. Samples were serially diluted and were spread on nutrient agar media supplemented with 2% urea and 0.28 g calcium chloride. All the isolates were observed for colony morphology, gram staining, and spore staining, for biochemical profile and for their efficacy in producing calcium carbonate crystals. All isolates showed cell densities at varying metal (chromium) concentrations ranging from 100 to 500 µg/mL. Determination of biofilm formation is performed by recording Optical density (OD = 600 nm). Normalized biofilm (570/600 nm) was formed. Different concentrations of chromium were used to measure their reduction ability and also by using tannery water. In tannery wastewater, significant reduction was recorded (p = 0.05) by AS4 bacterial isolate as compared to rest of the isolates and treatments. It showed remarkable chromium VI reduction ability.

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Intracellular and Extracellular Bacterial Biomineralization

Cited by 4 publications

References 95 publications

Spatial co-occurrence patterns of benthic microbial assemblage in response to trace metals in the Atacama Desert Coastline

Spatial co-occurrence patterns of benthic microbial assemblage in response to trace metals in the Atacama Desert Coastline

The tropical cookbook: Termite diet and phylogenetics—Over geographical origin—Drive the microbiome and functional genetic structure of nests

Microbial bio‐film calcite mediated removal of heavy metals from industrial wastewater of Kasur, Pakistan

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