New Species of Saprobic Labyrinthulea (=Labyrinthulomycota) and the Erection of a gen. nov. to Resolve Molecular Polyphyly within the Aplanochytrids

Hassett, Brandon T.; Gradinger, Rolf

doi:10.1111/jeu.12494

Cited by 13 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2017). Similar diversity snapshots have reported the occurrence of basal fungal lineages in different marine habitats (Raghukumar, 2006; Li et al ., 2016; Hassett et al ., 2017; Hassett and Gradinger, 2018). We note that microbial biomass was so low that we had to incorporate an amplification step (multiple displacement amplification) after our DNA extraction and prior to PCR amplification of our marker genes.…”

Section: Discussionmentioning

confidence: 99%

Meta‐omics highlights the diversity, activity and adaptations of fungi in deep oceanic crust

Quémener

Mara

Schubotz

et al. 2020

Environmental Microbiology

View full text Add to dashboard Cite

The lithified oceanic crust, lower crust gabbros in particular, has remained largely unexplored by microbiologists. Recently, evidence for heterogeneously distributed viable and transcriptionally active autotrophic and heterotrophic microbial populations within low-biomass communities was found down to 750 m below the seafloor at the Atlantis Bank Gabbro Massif, Indian Ocean. Here, we report on the diversity, activity and adaptations of fungal communities in the deep oceanic crust from 10 to 780 mbsf by combining metabarcoding analyses with mid/highthroughput culturing approaches. Metabarcoding along with culturing indicate a low diversity of viable fungi, mostly affiliated to ubiquitous (terrestrial and aquatic environments) taxa. Ecophysiological analyses coupled with metatranscriptomics point to viable and transcriptionally active fungal populations engaged in cell division, translation, protein modifications and other vital cellular processes. Transcript data suggest possible adaptations for surviving in the nutrient-poor, lithified deep biosphere that include the recycling of organic matter. These active communities appear strongly influenced by the presence of cracks and veins in the rocks where fluids and resulting rock alteration create micro-niches.

show abstract

Section: Discussionmentioning

confidence: 99%

Meta‐omics highlights the diversity, activity and adaptations of fungi in deep oceanic crust

Quémener

Mara

Schubotz

et al. 2020

Environmental Microbiology

View full text Add to dashboard Cite

show abstract

“…The detection of fungi on Arctic marine bird feathers (Singh et al 2016) and in association with driftwood (Rämä et al 2014) suggests additional ecological niches occupied by the fungi that currently remain unexplored. Arctic members of the Labyrinthulomycota can exceed 10 5 cells L −1 (Naganuma et al 2006) and are capable of degrading pine pollen (Hassett and Gradinger 2018), suggesting that these organisms might be seasonally important in degradative processes. Members of the Mesomycetozoea (namely, the genus Ichthyophonus) primarily exist as parasites of Arctic fish (Klimpel et al 2006) but whose abundance, distribution, and relevance to other ecosystem processes remain unknown.…”

Section: Cryptic Carbon Cycling and Underrepresented Microbesmentioning

confidence: 99%

Progress in Microbial Ecology in Ice-Covered Seas

Vonnahme

Dietrich

Hassett

2019

YOUMARES 9 - The Oceans: Our Research, Our Future

Self Cite

View full text Add to dashboard Cite

Sea ice seasonally covers 10% of the earth's oceans and shapes global ocean chemistry. The unique physical processes associated with sea ice growth and development shape the associated biological diversity and ecosystem function. Microbes make up the base of all marine food webs and the overwhelming majority of biomass in the sea ice ecosystem. Despite their biomass, microbial processes are not fully integrated into marine ecosystem models. Recent applications of novel molecular biology technologies to studies of marine ecology have elucidated numerous microbial-mediated processes interfaced by previously unknown organisms and processes. These discoveries are yielding more in-depth studies on the relevance of mixotrophy, the ecology of fungi, and the interplay between major microbial clades. In ecosystem studies, the basis of the food web is frequently neglected even though the accessibility of energy, recycling of nutrients, and parasitism are crucial factors shaping the environment for grazers and higher trophic levels. In this review, we focus on the species composition, abundance, and functions of microalgae, bacteria, archaea, fungi, and viruses in the sea ice-covered seas throughout the year. A strong emphasis will be put on advances in molecular methods that empower scientists to further investigate microorganisms in more detail. Since microbes make up the majority of all oceanic biomass, we believe that it is impossible to accurately forecast the biological fate of polar marine ecosystems without placing a proportional emphasis on microbes relative to their biomass.

show abstract

“…Recently, the genus of Oblongichytrium [ 6 ] and Althornia [ 7 ] are removed from this family, but scientists still consider them under the thraustochytrid family. In future, there is a possibility of re-revising the thraustochytrids [ 8 ] under 11 genera viz., Thraustochytrium [ 9 ], Japanochytrium [ 10 ] Schizochytrium [ 11 ], Ulkenia [ 12 ], Aurantiochytrium [ 6 ], Sicyoidochytrium, Parietichytrium , and Botryochytrium [ 13 ], Monorhizochytrium [ 14 ], Hondaea [ 15 ], and Labyrinthulochytrium [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Thraustochytrids of Mangrove Habitats from Andaman Islands: Species Diversity, PUFA Profiles and Biotechnological Potential

et al. 2021

View full text Add to dashboard Cite

Thraustochytrids are the most promising microbial source for the commercial production of docosahexaenoic acid (DHA) for its application in the human health, aquaculture, and nutraceutical sectors. The present study isolated 127 thraustochytrid strains from mangrove habitats of the south Andaman Islands, India to study their diversity, polyunsaturated fatty acids (PUFAs), and biotechnological potential. The predominant strains were identified as belonging to two major genera (Thraustochytrium, Aurantiochytrium) based on morphological and molecular characteristics. The strain ANVKK-06 produced the maximum biomass of 5.42 g·L−1, while ANNK-03 exhibited the maximum total lipid (71.03%). Omega-3 PUFAs such as eicosapentaenoic acid (EPA) accumulated up to 11.03% in ANVKK-04, docosapentaenoic acid (DPA) up to 8.65% in ANVKK-07, and DHA up to 47.19% in ANVKK-06. ANVKK-6 showed the maximum scavenging activity (84.79 ± 2.30%) while ANVKK-03 and ANVKK-10 displayed the highest antibacterial activity against human and fish pathogens, S. aureus (18.69 ± 1.2 mm) and V. parahaemolyticus (18.31 ± 1.0 mm), respectively. All strains were non-toxic as evident by negative blood agar hemolysis, thus, the thraustochytrids are suggested to be a potential source of DHA for application in the health care of human and fish.

show abstract

New Species of Saprobic Labyrinthulea (=Labyrinthulomycota) and the Erection of a gen. nov. to Resolve Molecular Polyphyly within the Aplanochytrids

Cited by 13 publications

References 28 publications

Meta‐omics highlights the diversity, activity and adaptations of fungi in deep oceanic crust

Meta‐omics highlights the diversity, activity and adaptations of fungi in deep oceanic crust

Progress in Microbial Ecology in Ice-Covered Seas

Thraustochytrids of Mangrove Habitats from Andaman Islands: Species Diversity, PUFA Profiles and Biotechnological Potential

Contact Info

Product

Resources

About