Results 31 to 40 of about 54,376 (146)

Bacterial and eukaryotic intact polar lipids point to in situ production as a key source of labile organic matter in hadal surface sediment of the Atacama Trench [PDF]

Biogeosciences, 2022
Elevated organic matter (OM) concentrations are found in hadal surface sediments relative to the surrounding abyssal seabed. However, the origin of this biological material remains elusive.
E. Flores, E. Flores, E. Flores, S. I. Cantarero, P. Ruiz-Fernández, P. Ruiz-Fernández, P. Ruiz-Fernández, N. Dildar, M. Zabel, O. Ulloa, O. Ulloa, J. Sepúlveda, J. Sepúlveda   +12 more
doaj   +1 more source

Revealing the full biosphere structure and versatile metabolic functions in the deepest ocean sediment of the Challenger Deep

Genome Biology, 2021
Background The full biosphere structure and functional exploration of the microbial communities of the Challenger Deep of the Mariana Trench, the deepest known hadal zone on Earth, lag far behind that of other marine realms.
Ping Chen, Hui Zhou, Yanyan Huang, Zhe Xie, Mengjie Zhang, Yuli Wei, Jia Li, Yuewei Ma, Min Luo, Wenmian Ding, Junwei Cao, Tao Jiang, Peng Nan, Jiasong Fang, Xuan Li   +14 more
doaj   +1 more source

The Adaptive Evolution and Gigantism Mechanisms of the Hadal “Supergiant” Amphipod Alicella gigantea

Frontiers in Marine Science, 2021
Hadal trenches are commonly referred to as the deepest areas in the ocean and are characterized by extreme environmental conditions such as high hydrostatic pressures and very limited food supplies. Amphipods are considered the dominant scavengers in the
Wenhao Li, Wenhao Li, Wenhao Li, Faxiang Wang, Shouwen Jiang, Binbin Pan, Binbin Pan, Jiulin Chan, Qianghua Xu, Qianghua Xu, Qianghua Xu   +10 more
doaj   +1 more source

Distinctive signatures of pathogenic and antibiotic resistant potentials in the hadal microbiome

Environmental Microbiome, 2022
Background Hadal zone of the deep-sea trenches accommodates microbial life under extreme energy limitations and environmental conditions, such as low temperature, high pressure, and low organic matter down to 11,000 m below sea level.
Liuqing He, Xinyu Huang, Guoqing Zhang, Ling Yuan, Enhui Shen, Lu Zhang, Xiao-Hua Zhang, Tong Zhang, Liang Tao, Feng Ju   +9 more
doaj   +1 more source

Intra- and inter-spatial variability of meiofauna in hadal trenches is linked to microbial activity and food availability

Scientific Reports, 2022
Hadal trenches are depocenters for organic material, and host intensified benthic microbial activity. The enhanced deposition is presumed to be reflected in elevated meiofaunal standing-stock, but available studies are ambiguous. Here, we investigate the
M. Shimabukuro, D. Zeppilli, D. Leduc, F. Wenzhöfer, P. Berg, A. A. Rowden, R. N. Glud   +6 more
doaj   +1 more source

Identification and genomic analysis of temperate Halomonas bacteriophage vB_HmeY_H4907 from the surface sediment of the Mariana Trench at a depth of 8,900 m

Microbiology Spectrum, 2023
Viruses play crucial roles in the ecosystem by modulating the host community structure, mediating biogeochemical cycles, and compensating for the metabolism of host cells.
Yue Su, Wenjing Zhang, Yantao Liang, Hongmin Wang, Yundan Liu, Kaiyang Zheng, Ziqi Liu, Hao Yu, Linyi Ren, Hongbing Shao, Yeong Yik Sung, Wen Jye Mok, Li Lian Wong, Yu-Zhong Zhang, Andrew McMinn, Min Wang   +15 more
doaj   +1 more source

Microbial community and geochemical analyses of trans-trench sediments for understanding the roles of hadal environments [PDF]

, 2020
Hadal trench bottom (>6000 m below sea level) sediments harbor higher microbial cell abundance compared with adjacent abyssal plain sediments. This is supported by the accumulation of sedimentary organic matter (OM), facilitated by trench topography ...
Kitahashi T, Nomaki H, Juliarnic, Nishizawa M, Hirai M, Tsuda M, Tasumi E, Nunoura T, Takai K, Matsui Y, Rastelli E, Danovaro R, Makabe A, Minegishi H, Corinaldesi C, Hiraoka S   +15 more
core   +1 more source

Benthic Carbon Mineralization in Hadal Trenches: Insights From In Situ Determination of Benthic Oxygen Consumption

Geophysical Research Letters, 2018
Hadal trenches have been proposed as depocenters of organic material and hot spots for organic matter mineralization. In this study, we for the first time quantified the total benthic O2 uptake in hadal trenches using in situ chamber incubations.
Min Luo, Ronnie N. Glud, Binbin Pan, Frank Wenzhöfer, Yunping Xu, Gang Lin, Duofu Chen   +6 more
doaj   +1 more source

Spatial variations of microbial communities in abyssal and hadal sediments across the Challenger Deep [PDF]

PeerJ, 2019
Microbial communities in hadal sediments are least explored in hadal zone (>6,000 m), especially in the Challenger Deep with high pressure (∼110 M pa at the bottom).
Guojie Cui, Jun Li, Zhaoming Gao, Yong Wang   +3 more
doaj   +2 more sources

Vertically distinct microbial communities in the Mariana and Kermadec trenches. [PDF]

PLoS ONE, 2018
Hadal trenches, oceanic locations deeper than 6,000 m, are thought to have distinct microbial communities compared to those at shallower depths due to high hydrostatic pressures, topographical funneling of organic matter, and biogeographical isolation ...
Logan M Peoples, Sierra Donaldson, Oladayo Osuntokun, Qing Xia, Alex Nelson, Jessica Blanton, Eric E Allen, Matthew J Church, Douglas H Bartlett   +8 more
doaj   +1 more source