Marine-derived fungi from Kappaphycus alvarezii and K. striatum as potential causative agents of ice-ice disease in farmed seaweeds
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Michael Jay L. Solis
Abstract
Ice-ice disease in cultivated seaweeds is often associated with environmental stress and infection by pathogenic marine bacteria. No studies have associated the disease with marine fungi. Our study aimed to isolate marine fungi from cultivated Kappaphycus species and assess their ability to induce the disease. Kappaphycus alvarezii and K. striatum were collected from Calatagan, Batangas, Philippines. Following washing with sterile artificial seawater and inoculation into culture media, 18 morphospecies of marine-derived fungi (MDF) were isolated. Fungal diversity (Hs=2.4) in infected seaweeds was higher than in healthy specimens. K. striatum (orange variety) had the highest incidence of MDF with 67 isolates, while K. striatum (green variety) had the lowest incidence with only 17 isolates. The ability of MDF to produce carrageenolytic and cellulolytic enzymes and utilize algal components was also tested. Of the 18 MDF selected, three had carrageenolytic activity and ten had cellulolytic activity. Most isolates utilized carrageenan, agar, and cellulose. Among the 10 MDF assayed for their ability to induce ice-ice disease, three isolates (Aspergillus ochraceus, A. terreus and Phoma sp.) induced ice-ice disease symptoms (thallus bleaching) in healthy, non-axenic cultures of K. alvarezii.
©2010 by Walter de Gruyter Berlin New York
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- Fungal colonization and breakdown of sedge (Cyperus malaccensis Lam.) in an Indian mangrove
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- Marine-derived fungi from Kappaphycus alvarezii and K. striatum as potential causative agents of ice-ice disease in farmed seaweeds
- Short communication
- Fungal diversity in bottom sediments of the Kara Sea
- Reviewer acknowledgement Bot. Mar. volume 53 (2010)
Articles in the same Issue
- Guest editorial
- 11th International Marine and Freshwater Mycology Symposium, Taichung, Taiwan R.O.C., November 2009
- Review
- A review on deep-sea fungi: occurrence, diversity and adaptations
- Research articles
- Sedecimiella taiwanensis gen. et sp. nov., a marine mangrove fungus in the Hypocreales (Hypocreomycetidae, Ascomycota)
- Dibenzofurans from the marine sponge-derived ascomycete Super1F1-09
- Antimicrobial activities of marine fungi from Malaysia
- Diversity and abundance of lignicolous marine fungi from the east and west coasts of Peninsular Malaysia and Sabah (Borneo Island)
- Fungal colonization and breakdown of sedge (Cyperus malaccensis Lam.) in an Indian mangrove
- Occurrence and distribution of fungi in a mangrove forest on Siargao Island, Philippines
- Biodiversity of marine fungi in Malaysian mangroves
- Endophytic fungi from mangrove plant species of Thailand: their antimicrobial and anticancer potentials
- Fungal communities in bunker C oil-impacted sites off southern Guimaras, Philippines: a post-spill assessment of Solar 1 oil spill
- Potential use of marine arenicolous ascomycetes as bioindicators of ecosystem disturbance on sandy Cancun beaches: Corollospora maritima as a candidate species
- Effects of Cu(II) and Zn(II) on growth and cell morphology of thraustochytrids isolated from fallen mangrove leaves in Taiwan
- Marine-derived fungi from Kappaphycus alvarezii and K. striatum as potential causative agents of ice-ice disease in farmed seaweeds
- Short communication
- Fungal diversity in bottom sediments of the Kara Sea
- Reviewer acknowledgement Bot. Mar. volume 53 (2010)
