Major diseases in edible red algae Pyropia under aquaculture: Infectious agents and procedure, detection, influencing factors, prevention, and treatment
DOI:
https://doi.org/10.1590/Keywords:
Pyropia, Red algae, Seaweed cultivation, Pathogen, Algal diseaseAbstract
The red algae, Pyropia has been one of the major edible marine algae in East Asian countries especially in
China, Japan, and South Korea for several hundred years and it has recently become a global food ingredient.
Cultivating methods have been developed along Pyropia’s unique life cycle and to improve harvest yield and
product quality. Various red algal diseases are caused by oomycetes, bacteria, viruses, or diatoms. Outbreaks
of red-rot disease, Olpidiopsis disease, green-spot disease, and diatom-related diseases such as diatom felt and
diatom blooms have been reported as major concerns in Pyropia aquaculture, as they bring serious damage
to sea farms by inhibiting crop growth, destroying thalli of Pyropia, and/or exhausting nutrients. In this study,
we review the causative agents, infection or impacting processes, detection methods, influencing factors,
prevention strategies, and treatments for these four major diseases, namely red-rot disease, Olpidiopsis
disease, green-spot disease, and diatom-related disease, and discuss remaining knowledge gaps and related
or additional issues.
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