Journal
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
Volume 17, Issue -, Pages 293-299Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.algal.2016.05.023
Keywords
Anaaki disease; Green-spot disease; Pyropia; Red algae; Virus
Categories
Funding
- National Research Foundation of Korea Grant [NRF-2015M1A5A1041804]
- Golden Seed Project, Ministry of Agriculture, Food and Rural Affairs
- Marine Biotechnology Program (genome analysis of marine organisms and development of functional applications) - Ministry of Oceans and Fisheries, Korea [PJT200620]
Ask authors/readers for more resources
Viruses are potential regulators of primary production in marine algal populations, which also manipulate the life history and evolution of their hosts. Recent development of an intensive algal aquaculture has enabled emerging viral diseases to spread faster than ever. The pathogen of green-spot disease which causes serious economic loss to Pyropia sea farms in Korea is confirmed for the first time. Ultrastructural study and infection experiment showed that the pathogen is a novel virus, PyroV1 (Pyropia-infecting virus 1), that causes cellular lysis in the blade of the three most commonly cultivated Pyropia species in Korea; Pyropia yezoensis, Pyropia tenera, and Pyropia dentata. Susceptibility test showed that PyroV1 could not infect the conchocelis filaments of the above species nor 16 strains of other red algae, including Pyropia plicata from New Zealand and an Australian strain of Porphyra lucasii. The shape of PyroV1 was isometric, apparently spherical and up to 100 nm in diameter. Chloroplast of the infected cells showed loosely arranged thylakoids and enlarged pyrenoid. Most viral particles were observed around the pyrenoid of the chloroplast and none of them were found in the cytoplasm. In the infected cells, floridean starch granules disappeared and the cytoplasm was filled with swollen vesicles. The burst size was roughly 400-500 infectious units/cell and the latent period was <36 h. To the best of our knowledge, this is the first report of an isolation of a virus, which infects and causes disease in marine red algae. (C) 2016 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available