Prokaryotic and eukaryotic diversity in hydrothermal continental systems

Silva, Bruna; Antunes, Sara C.; Andrade, F. B.; Silva, Eduardo Ferreira da; Grande, J. A.; Luís, Ana Teresa

doi:10.1007/s00203-021-02416-1

Cited by 5 publications

(3 citation statements)

References 164 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ren et al (2019) find that bacteria are more taxonomically sensitive in the dry period and more functionally sensitive in the wet period in the river ecosystem. Additionally, eukaryotes are among the most extreme‐tolerant organisms with high ecological plasticity in ecosystems (Cho et al, 2023; Lukacs et al, 2021; Silva et al, 2021). For example, eukaryotes in the soil are less affected and more stable in the face of hydrological alternations (Gionchetta et al, 2019; Vries et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Eukaryotes contribute more than bacteria to the recovery of freshwater ecosystem functions under different drought durations

Miao

Adyel

et al. 2023

Environmental Microbiology

View full text Add to dashboard Cite

Global climate change mostly impacts river ecosystems by affecting microbial biodiversity and ecological functions. Considering the high functional redundancy of microorganisms, the unknown relationship between biodiversity and ecosystem functions obstructs river ecological research, especially under the influence of increasing weather extremes, such as in intermittent rivers and ephemeral streams (IRES). Herein, dry-wet alternation experiments were conducted in artificial stream channels for 25 and 90 days of drought, both followed by 20 days of rewetting. The dynamic recovery of microbial biodiversity and ecosystem functions (represented by ecosystem metabolism and denitrification rate) were determined to analyse biodiversity-ecosystem-function (BEF) relationships after different drought durations. There was a significant difference between bacterial and eukaryotic biodiversity recovery after drought. Eukaryotic biodiversity was more sensitive to drought duration than bacterial, and the eukaryotic network was more stable under dry-wet alternations. Based on the establishment of partial least squares path models, we found that eukaryotic biodiversity has a stronger effect on ecosystem functions than bacteria after long-term drought. Indeed, this work represents a significant step forward for further research on the ecosystem functions of IRES, especially emphasizing the importance of eukaryotic biodiversity in the BEF relationship.

show abstract

Section: Introductionmentioning

confidence: 99%

Eukaryotes contribute more than bacteria to the recovery of freshwater ecosystem functions under different drought durations

Miao

Adyel

et al. 2023

Environmental Microbiology

View full text Add to dashboard Cite

show abstract

“…As stated in the classification of biodiversity, green algae have its place with eukaryotic and prokaryotic cells. [ 58 ] They can colonize themselves in various kinds of environments from earthbound streams, oceans, lakes, and underground aquifers, and they can be found in all geographical regions from jungle to polar regions. [ 59 ] They are classified according to their shades, e.g., blue‐green (Cyanophycean), green (Chlorophyta), brown (Phaeophyta), and red (Rhodophyta) algae.…”

Section: Types Of Polysaccharidesmentioning

confidence: 99%

Algal Polysaccharides‐Based Nanoparticles for Targeted Drug Delivery Applications

et al. 2022

View full text Add to dashboard Cite

A huge variety of polysaccharides can be obtained from algal biomass having several attractive properties such as cost‐effectiveness, non‐toxicity, biodegradability, abundant availability, and biocompatibility. In recent years, algal polysaccharides (including alginates, carrageenans, fucoidans, ulvans, and agaroses) have extensively been reported for their chemical properties and important bioactive potentialities. Furthermore, algal polysaccharides have gained huge scientific interest as they are a significant source of biologically active compounds, and they show various medical potentialities including anticancer, antiproliferative, anticoagulant, antitumoral, and antiviral properties. Exceptional physicochemical and biological characteristics make them interesting candidates for biotechnological and biomedical investigations. In this review, nanodrug delivery systems based on different algal‐polysaccharides (alginates, carrageenans, fucoidan, ulvan, and other) are described in a systematic way. Moreover, the current challenges and future prospects in the area of algal exploitation for biomedical applications are summarized at the end.

show abstract

“…The recent focus has been on unknown extremophilic microorganisms and their metabolic characteristics (Silva et al, 2021 ). Therefore, obtaining pure cultures of extreme microorganisms for further classification and physiological and evolutionary studies is essential.…”

Section: Introductionmentioning

confidence: 99%

Diversity of the genus Cryobacterium and proposal of 19 novel species isolated from glaciers

2023

View full text Add to dashboard Cite

The bacterial genus Cryobacterium includes at present 14 species that live in cryospheric environments. In this study, we analyzed 101 genomes of Cryobacterium with pure cultures obtained from GenBank. They could be classified into 44 species based on average nucleotide identity (ANI) analysis, showing the diversity of Cryobacterium. Among these, 19 strains in our laboratory were isolated from the glacier samples in China. The pairwise ANI values of these 19 strains and known species were <95%, indicating that they represented 19 novel species. The comparative genomic analysis showed significant differences in gene content between the two groups with a maximum growth temperature (Tmax) of ≤ 20°C and a Tmax of >20°C. A comprehensive and robust phylogenetic tree, including 14 known species and 19 novel species, was constructed and showed five phylogenetic branches based on 265 concatenated single-copy gene sequences. The Tmax parameter had a strong phylogenetic signal, indicating that the temperature adaptation of Cryobacterium was largely through vertical transfer rather than horizontal gene transfer and was affected by selection. Furthermore, using polyphasic taxonomy combined with phylogenomic analysis, we proposed 19 novel species of the genus Cryobacterium by the following 19 names: Cryobacterium serini sp. nov., Cryobacterium lactosi sp. nov., Cryobacterium gelidum sp. nov., Cryobacterium suzukii sp. nov., Cryobacterium fucosi sp. nov., Cryobacterium frigoriphilum sp. nov., Cryobacterium cryoconiti sp. nov., Cryobacterium lyxosi sp. nov., Cryobacterium sinapicolor sp. nov., Cryobacterium sandaracinum sp. nov., Cryobacterium cheniae sp. nov., Cryobacterium shii sp. nov., Cryobacterium glucosi sp. nov., Cryobacterium algoritolerans sp. nov., Cryobacterium mannosilyticum sp. nov., Cryobacterium adonitolivorans sp. nov., Cryobacterium algoricola sp. nov., Cryobacterium tagatosivorans sp. nov., and Cryobacterium glaciale sp. nov. Overall, the taxonomy and genomic analysis can improve our knowledge of phenotypic diversity, genetic diversity, and evolutionary characteristics of Cryobacterium.

show abstract

Prokaryotic and eukaryotic diversity in hydrothermal continental systems

Cited by 5 publications

References 164 publications

Eukaryotes contribute more than bacteria to the recovery of freshwater ecosystem functions under different drought durations

Eukaryotes contribute more than bacteria to the recovery of freshwater ecosystem functions under different drought durations

Algal Polysaccharides‐Based Nanoparticles for Targeted Drug Delivery Applications

Diversity of the genus Cryobacterium and proposal of 19 novel species isolated from glaciers

Contact Info

Product

Resources

About