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Undergraduate Special Problem

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14583/30

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    Identification of intertidal fungi from mangroves in Iloilo River
    Bonifacio, Jo F. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2002-04)
    This study aims to describe, identify and classify intertidal fungi through direct examination of the collected mangrove wood samples in Iloilo River, Iloilo City, Philippines. This will provide additional information about the occurrence of fungi in estuarine environments. One hundred samples of decayed but attached roots and stems of unidentified mangroves were collected in each of the intertidal zone of the three study sites (Study Site I: Sooc, Oton, Iloilo; Study Site II: Dulonan, Arevalo, Iloilo City; Study Site III: Diversion River, near Marina Restaurant) in Iloilo River. In Study Site 1, The total number of species collected was 11, 4 of which belong to Phylum Ascomycota, 2 belong to Phylum Deuteromycota and 5 belong to Phylum Basidiomycota. In Study Site II, there were 10, 6 belong to Phylum Ascomycota, 3 to Phylum Deuteromycota and 1 to Phylum Basidiomycota and in Study Site III, total number of species was 14, 7 belong to Phylum Ascomycota, 4 to Phylum Deuteromycota and 3 to Phylum Basidiomycota. The total number of species of fungi collected in the three study sites were 20 (8 ascomycetes, 7 basidiomycetes, and 5 deuteromycetes). The frequently occurring fungi (10-29 % fiequency of occurrence) are Eutypa sp. (15.3%), followed by Periconia prolifica (13 %) and Verruculina enalia (10.3%). The remaining 17 species were collected infrequently (<10 % fiequency of occurrence). The ascomycetes were the most dominant group of fungi collected in this study.
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    Endophytic fungi from Halimeda macroloba and Sargassum sp.in Nueva Valencia Nueva Valencia, Guimaras, Philippines
    Alemania, Darlene Kris V. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2019-06)
    Endophytic fungi of marine algae in the Philippines have not been widely explored despite the fact that marine fungi associated with algae are the second most diverse. This study aimed to conduct a preliminary investigation on the occurrence of endophytic fungi from Halimeda macroloba and Sargassum sp. In this study fungal endophytes were isolated from Halimeda macroloba and Sargassum sp. collected from Nueva Valencia, Guimaras. Broad-leaf macroalagal samples were surface sterilized and cultured on PDA seawater media at 37°C. Isolated fungal endophytes were identified through colony and microscopic characteristics. Twenty one distinct endophytic fungi were isolated, 17 of which were identified up to the genus level with the most endophytes belonging to the genus Aspergillus. Fungal endophytes obtained were mostly ascomycetes specifically Aspergillus sp., one hyphomycete and three unidentified fungi with sterile mycelia were present. The brown algae, Sargassum sp., had a higher diversity compared to the green algae Halimeda macroloba in spite of having a lower isolation frequency. In terms of similarity, the two algal hosts had a low index of similarity with J= 10%. This study contributes to the growing data regarding diversity and abundance of fungal endophyte species from marine macroalgae in the Philippines. This is the first study conducted on fungal endophyte assemblages of algae species in Western Visayas.