The field relationship of literature in the Yan’an period is the first thing worthy of attention.In order to become an independent literary history,the literature of Yan’an period must be able to be distinguished f...The field relationship of literature in the Yan’an period is the first thing worthy of attention.In order to become an independent literary history,the literature of Yan’an period must be able to be distinguished from“Sui literary literature”and“new Chinese literature”.The complex field relationship in the Yan’an period makes the“cultural strategy”an indispensable perspective for studying literature in this period.展开更多
INTRODUCTION In Italy,they have done many bcnefi-cial works in the high yield plantation--the culture and the breeding of Poplar.Forexample,in our country,introduced manygood clones such as I—214,I—72 and I—69etc.a...INTRODUCTION In Italy,they have done many bcnefi-cial works in the high yield plantation--the culture and the breeding of Poplar.Forexample,in our country,introduced manygood clones such as I—214,I—72 and I—69etc.all the clones were the production of展开更多
Microorganisms are ubiquitous in the ocean environment and they play key roles in marine ecosystem function and service.However,many of their functions and phenotypes remain unknown because indigenous marine bacteria ...Microorganisms are ubiquitous in the ocean environment and they play key roles in marine ecosystem function and service.However,many of their functions and phenotypes remain unknown because indigenous marine bacteria are mostly difficult to culture.Although many novel techniques have brought previously uncultured microbes into laboratory culture,there are still many most-wanted or key players that need to be cultured from marine environments.This review discusses possible reasons for‘unculturable microbes’and categorizes uncultured bacteria into three groups:dominant active bacteria,rare active bacteria,and dormant bacteria.This review also summarizes advances in cultivation techniques for culturing each group of unculturable bacteria.Simulating the natural environment is an effective strategy for isolating dominant active bacteria,whereas culturomics and enrichment culture methods are proposed for isolating rare active bacteria.For dormant bacteria,resuscitation culture is an appropriate strategy.Furthermore,the review provides a list of the most-wanted bacteria and proposes potential strategies for culturing these bacteria in marine environments.The review provides new insight into the development of strategies for the cultivation of specific groups of uncultured bacteria and therefore paves the way for the detection of novel microbes and their functions in marine ecosystems.展开更多
文摘The field relationship of literature in the Yan’an period is the first thing worthy of attention.In order to become an independent literary history,the literature of Yan’an period must be able to be distinguished from“Sui literary literature”and“new Chinese literature”.The complex field relationship in the Yan’an period makes the“cultural strategy”an indispensable perspective for studying literature in this period.
文摘INTRODUCTION In Italy,they have done many bcnefi-cial works in the high yield plantation--the culture and the breeding of Poplar.Forexample,in our country,introduced manygood clones such as I—214,I—72 and I—69etc.all the clones were the production of
基金This work was supported by the National Natural Science Foundation of China(41876166,and 31770002)Science and Technology Basic Resources Investigation Program of China(2017FY100302).
文摘Microorganisms are ubiquitous in the ocean environment and they play key roles in marine ecosystem function and service.However,many of their functions and phenotypes remain unknown because indigenous marine bacteria are mostly difficult to culture.Although many novel techniques have brought previously uncultured microbes into laboratory culture,there are still many most-wanted or key players that need to be cultured from marine environments.This review discusses possible reasons for‘unculturable microbes’and categorizes uncultured bacteria into three groups:dominant active bacteria,rare active bacteria,and dormant bacteria.This review also summarizes advances in cultivation techniques for culturing each group of unculturable bacteria.Simulating the natural environment is an effective strategy for isolating dominant active bacteria,whereas culturomics and enrichment culture methods are proposed for isolating rare active bacteria.For dormant bacteria,resuscitation culture is an appropriate strategy.Furthermore,the review provides a list of the most-wanted bacteria and proposes potential strategies for culturing these bacteria in marine environments.The review provides new insight into the development of strategies for the cultivation of specific groups of uncultured bacteria and therefore paves the way for the detection of novel microbes and their functions in marine ecosystems.
