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| Chlorovirus ATCV-1 ： ウィキペディア英語版 |
Acanthocystis turfacea chlorella virus 1
''Acanthocystis turfacea chlorella virus 1'' (''ATCV-1''), also called Chlorovirus ATCV-1 or Chlorella virus ATCV-1 is a species of giant double-stranded DNA virus which belongs to the so called Chloroviruses. Chloroviruses infect certain unicellular, eukaryotic, exsymbiontic chlorella-like green algae, called zoochlorellae. Zoochlorellae are associated with the protozoan Paramecium bursaria, the coelenterate Hydra viridis, the heliozoon Acanthocystis turfacea and other freshwater and marine invertebrates and protozoans. The host of ATCV-1 is Chlorella heliozoae. Chloroviruses are known to be very species and even strain specific.
Chloroviruses are common in inland waters throughout the world with titers as high as thousands of plaque-forming units (PFUs) per milliliter of indigenous water, although titers are typically 1-100 PFUs/mL. The viruses cannot infect zoochlorellae when they are in their symbiotic phase and there is no evidence that zoochlorellae grow free of their hosts in indigenous waters.
DNA from ATCV-1 has also been isolated from the mucous membranes of the noses of humans. In both humans and other mammals, the presence of ATCV-1 on the oropharyngeal mucosa was associated with lower scores in tests of cognitive and motor skills.
There is no evidence that ATCV-1 could infect other Chlorella species than Chlorella heliozoae.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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