Virologists discover a beforehand unknown virus within the Mariana Trench

Virologists find a previously unknown virus in the Mariana Trench

Dubbed Halomonas phage vB_HmeY_H4907, the brand new virus that infects micro organism is the deepest sepsivirus remoted from the ocean, and represents a brand new viral household that’s plentiful within the ocean.

Halomonas bacteriophage vB_HmeY_H4907.  Scale bar - 100 nm.  Image credit: Su et al., doi: 10.1128/spectrum.01912-23.

Halomonas Phage vB_HmeY_H4907. Scale bar – 100 nm. Picture credit score: Sue et al., doi: 10.1128/spectrum.01912-23.

“So far as we all know, that is the deepest remoted herbivore identified within the World Ocean,” mentioned Dr. Min Wang, a marine virologist at Ocean College of China.

“Our evaluation of viral genetic materials suggests the presence of a beforehand unknown viral household within the deep ocean, in addition to new insights into the variety, evolution, and genomic options of deep-sea phages and phage-host interactions.”

vB_HmeY_H4907 is a so-called phage, or a virus that infects micro organism and reproduces inside them.

It hits Halomonas meridianaa Gram-negative gammaproteobacteria remoted from floor sediments from the Mariana Trench at a depth of 8,900 m (29,200 ft).

Halomonas The micro organism are sometimes present in sediments from the deep sea and from hydrothermal vents, geyser-like vents on the seafloor that launch streams of sizzling water.

Halomonas belong to the system Circumferential spiral “They are often present in numerous environments, together with Antarctica, the Mariana Trench, and deep-sea hydrothermal vents,” the researchers mentioned.

“They’ve additionally been broadly utilized in artificial biology as a result of their organs Halomonas They’re identified for his or her capacity to degrade petroleum hydrocarbons, thrive in environments with excessive salt concentrations and alkaline pH, and have a excessive tolerance to air pollution.

“They’re additionally plentiful within the Mariana Trench, suggesting they might play an important position in hadal environments.”

Genetic evaluation of vB_HmeY_H4907 signifies that it’s broadly distributed within the ocean and has the same construction to its host.

The brand new virus is evolutionarily distant from different reference viruses and varieties a separate clade with distinctive conserved protein genes, representing a brand new household referred to as Suviridae.

“The research factors to new questions and areas of analysis specializing in the survival methods of viruses in harsh and remoted environments – and the way they co-evolve with their hosts,” Dr. Wang mentioned.

“vB_HmeY_H4907 is lysogenic, which means it invades and reproduces inside its host, however often with out killing the bacterial cell. When the cell divides, the viral genetic materials can be copied and handed on.

“In future research, we plan to check the molecular mechanism that drives the interactions between deep-sea viruses and their hosts.”

“We’re additionally on the lookout for different new viruses in excessive locations, which can contribute to increasing our understanding of the viral envelope.”

“Excessive environments present supreme horizons for the invention of recent viruses.”

a paper The outcomes seem within the journal Spectrum of microbiology.


Yo su et al. Identification and genomic evaluation of temperate Halomonas Micro organism vB_HmeY_H4907 from floor sediments of the Mariana Trench at a depth of 8900 metres. Spectrum of microbiology, printed on-line September 20, 2023; doi: 10.1128/spectrum.01912-23



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