Dear Editor,Nucleotide and protein sequences of isolates collectedfrom infected populations can be useful for determiningthe threats,such as host adaptation,which are associatedwith the emergence of new lineages.March...Dear Editor,Nucleotide and protein sequences of isolates collectedfrom infected populations can be useful for determiningthe threats,such as host adaptation,which are associatedwith the emergence of new lineages.March 2013 saw thefirst reports of a new H7N9 lineage in Shanghai,Chinathat saw a gradual increase in the number of cases;but,by 17th May 2013,four Chinese provinces had展开更多
Cyanophages are double-stranded DNA viruses that infect cyanobacteria,and they can be found in both freshwater and marine environments.They have a complex pattern of host ranges and play important roles in controlling...Cyanophages are double-stranded DNA viruses that infect cyanobacteria,and they can be found in both freshwater and marine environments.They have a complex pattern of host ranges and play important roles in controlling cyanobacteria population.Unlike marine cyanophages,for which there have been a number of recent investigations,very little attention has been paid to freshwater cyanophages.This review summarizes the taxonomy and morphology,host range,distribution,seasonal dynamics,and complete genomes of freshwater cyanophages,as well as diagnostic markers that can be used to identify them.展开更多
Dear Editor,East Lake,located in the middle and lower reaches of the Yangtze River,is a major source of drinking water for local residents.However,the large increase of population density and the rapid development of ...Dear Editor,East Lake,located in the middle and lower reaches of the Yangtze River,is a major source of drinking water for local residents.However,the large increase of population density and the rapid development of industry has resulted in heavy eutrophication of East Lake over the past few decades.Microcystis aeruginosa is a well-known展开更多
A third type of giant DNA virus named Pithovirus was recently isolated from a ＞30,000-year-old permafrost sample in Siberia （Legendre M,et al,2014）.Pithovirus has a larger pandoravirus-like particle with 1.5 μm le...A third type of giant DNA virus named Pithovirus was recently isolated from a ＞30,000-year-old permafrost sample in Siberia （Legendre M,et al,2014）.Pithovirus has a larger pandoravirus-like particle with 1.5 μm length and its adenine-thymine-rich genome is about 600 kb,which is surprisingly smaller than Pandoravirus.There is very slight genetic relationship between Pithovirus and Pandoravirus and their replication cycles significantly differ.The groundbreaking discovery of this ancient virus expands our understanding of giant DNA viruses and raises the concern of pathogen reemergence from permafrost regions because of the change of climate or the activity of human.展开更多
文摘Dear Editor,Nucleotide and protein sequences of isolates collectedfrom infected populations can be useful for determiningthe threats,such as host adaptation,which are associatedwith the emergence of new lineages.March 2013 saw thefirst reports of a new H7N9 lineage in Shanghai,Chinathat saw a gradual increase in the number of cases;but,by 17th May 2013,four Chinese provinces had
文摘Cyanophages are double-stranded DNA viruses that infect cyanobacteria,and they can be found in both freshwater and marine environments.They have a complex pattern of host ranges and play important roles in controlling cyanobacteria population.Unlike marine cyanophages,for which there have been a number of recent investigations,very little attention has been paid to freshwater cyanophages.This review summarizes the taxonomy and morphology,host range,distribution,seasonal dynamics,and complete genomes of freshwater cyanophages,as well as diagnostic markers that can be used to identify them.
基金support from the Knowledge Innovation Program of the Chinese Academy of Sciences(KSCX2-YW-Z-0954,KSCX2-EW-Z-3)
文摘Dear Editor,East Lake,located in the middle and lower reaches of the Yangtze River,is a major source of drinking water for local residents.However,the large increase of population density and the rapid development of industry has resulted in heavy eutrophication of East Lake over the past few decades.Microcystis aeruginosa is a well-known
文摘A third type of giant DNA virus named Pithovirus was recently isolated from a ＞30,000-year-old permafrost sample in Siberia （Legendre M,et al,2014）.Pithovirus has a larger pandoravirus-like particle with 1.5 μm length and its adenine-thymine-rich genome is about 600 kb,which is surprisingly smaller than Pandoravirus.There is very slight genetic relationship between Pithovirus and Pandoravirus and their replication cycles significantly differ.The groundbreaking discovery of this ancient virus expands our understanding of giant DNA viruses and raises the concern of pathogen reemergence from permafrost regions because of the change of climate or the activity of human.
