The fate and biogeochemical cycling of viral elements

Zhang, Rui; W, Wei; Cai, Lanlan

doi:10.1038/nrmicro3384

Cited by 70 publications

(33 citation statements)

References 14 publications

(26 reference statements)

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“…Finally, referred to as the “viral shunt”, the lytic processes of the host microbial cells infected by marine viruses will release dissolved organic matters into the water, which can be used by other heterotrophic bacteria. This means that virus-mediated mortality increases net respiration, dissolved organic matter recycling and nutrient transformation in aquatic systems [ 2 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Metagenomic Analysis of Virioplankton of the Subtropical Jiulong River Estuary, China

Cai

Zhang

et al. 2016

Viruses

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Viruses are the most abundant biological entities in the oceans, and encompass a significant reservoir of genetic diversity. However, little is known about their biodiversity in estuary environments, which represent a highly dynamic and potentially more diverse habitat. Here, we report a metagenomic analysis of the dsDNA viral community from the Jiulong River Estuary (JRE), China, and provide a comparative analysis with other closely related environments. The results showed that the majority of JRE virome did not show any significant similarity to the database. For the major viral group (Caudovirales) detected in the sample, Podoviridae (44.88%) were the most abundant family, followed by Siphoviridae (32.98%) and Myoviridae (17.32%). The two most abundant viruses identified in the virome were phages HTVC010P and HMO-2011, which infect bacteria belonging to marine SAR11 and SAR116 clades, respectively. Two contigs larger than 20 kb, which show similar overall genome architectures to Celeribacter phage P12053L and Thalosomonas phage BA3, respectively, were generated during assembly. Comparative analysis showed that the JRE virome was more similar to marine viromes than to freshwater viromes, and shared a relative coarse-grain genetic overlap (averaging 14.14% ± 1.68%) with other coastal viromes. Our study indicated that the diversity and community structure of the virioplankton found in JRE were mainly affected by marine waters, with less influence from freshwater discharge.

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Section: Introductionmentioning

confidence: 99%

Metagenomic Analysis of Virioplankton of the Subtropical Jiulong River Estuary, China

Cai

Zhang

et al. 2016

Viruses

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“…The river and the transition plume had DOC values that were 3-fold higher than those seen with the outer plume, likely due to the presence of allochthonous organic matter from the forest. This organic matter and sediment in suspension can adsorb more viral particles, removing them from the water column ( 30 ), a process that may be enhanced by the release of extracellular polysaccharides by bacteria and phytoplankton ( 22 ). Additionally, the grazing of viral particles is more significant in eutrophic than in oligotrophic waters ( 30 , 59 ), which may further increase the removal of viruses from copiotrophic river waters.…”

Section: Discussionmentioning

confidence: 99%

“…When DOM enters the microbial loop ( 29 ), levels of cellular respiration and of resulting CO 2 outgassing may increase. Additionally, viral particles can be adsorbed to POM ( 30 ) and then sink, directly contributing to the deposition of organic matter into the sediment of aquatic systems, or can be advected, contributing to the export of organic matter from river to ocean.…”

Section: Introductionmentioning

confidence: 99%

Virioplankton Assemblage Structure in the Lower River and Ocean Continuum of the Amazon

Silva

Coutinho

Gregoracci

et al. 2017

mSphere

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The Amazon River forms a vast plume in the Atlantic Ocean that can extend for more than 1,000 km. Microbial communities promote a globally relevant carbon sink system in the plume. Despite the importance of viruses for the global carbon cycle, the diversity and the possible roles of viruses in the Amazonia are poorly understood. The present work assesses, for the first time, the abundance and diversity of viruses simultaneously in the river and ocean in order to elucidate their possible roles. DNA sequence assembly yielded 29,358 scaffolds, encoding 82,546 viral proteins, with 15 new complete viral genomes from the 12 river and ocean locations. Viral diversity was clearly distinguished by river and ocean. Bacteriophages were the most abundant and occurred throughout the continuum. Viruses that infect eukaryotes were more abundant in the river, whereas phages appeared to have strong control over the host prokaryotic populations in the plume.

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“…无机颗粒上, 进而沉降到深海 [82] . 由此看来, 病毒在不 Believed to be the most abundant (~10 30 ) biological agents in the ocean, viruses play an important role in microbial metabolism, prokaryotic mortality, and nutrient recycling in marine ecosystems, thereby significantly influencing the geochemical cycles of our planet.…”

Section: 研究表明超过30%的上层海洋病毒会被吸附到有机和mentioning

confidence: 99%