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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51218

Title: Cultivable fungal diversity in deep-sea sediment of the East Pacific Ocean
Authors: Xu W
Guo S
Gong LF
He G
Pang KL
Luo ZH
Contributors: 國立臺灣海洋大學:生命科學暨生物科技學系
Keywords: Deep-sea sediment
fungal diversity
denitrification
NirK gene
Date: 2018-06
Issue Date: 2018-11-19T01:00:43Z
Publisher: Geomicrobiology Journal
Abstract: Abstract: The diversity of fungi in the marine environment has been extensively studied, but their denitrification activity has rarely been reported to date. In the present study, we used six different media to isolate fungi from 10 sediment samples collected at five different locations of the East Pacific Ocean with water depths ranging from 4545 to 7068 m. Fungal identification and phylogenetic diversity analysis were conducted based on morphological characteristics and internal transcribed spacers of ribosomal DNA (ITS-rRNA) sequencing. A total of 106 fungal isolates, belonging to 12 genera, including Aspergillus (five strains), Aureobasidium (three strains), Candida (two strains), Cladosporium (56 strains), Cystobasidium (one strain), Devriesia (nine strains), Knufia (one strain), Nigrospora (three strains), Penicillium (18 strains), Rhodotorula (four strains), Sarocladium (three strains), and unclassified Xylariales (one strain) were obtained. The most dominant culturable genus was Cladosporium. One possible novel fungal strains showed less than 97% similarity to their closest matches of unclassified Xylariales in the Genbank. In addition, we used nirK gene as the molecular marker to detect denitrifying fungi among the cultivable fungal isolates. The nirK gene was detected in Aspergillus niger and Penicillium chrysogenum. Our research indicated that diverse fungi from the deep sea sediments of the East Pacific Ocean and highlighted the involvement of these fungi in denitrification process.
Relation: 35(9) pp.790-797
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51218
Appears in Collections:[生命科學暨生物科技學系] 期刊論文

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