Genomic Analyses of the Complete Mitochondrial DNA Sequence of the Sponge, Cinachyrella australiensis (Demospongiae: Spirophorida)
碩士 === 國立中山大學 === 海洋資源學系研究所 === 93 === Sponges (Porifera) are the most primitive multicellular animals that are highly diverse and complex associated with other organisms, microbes especially. Recently, sponges have received a lot of attention as they are a rich source of nature products with antivi...
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ndltd-TW-093NSYS52770042015-12-23T04:08:13Z http://ndltd.ncl.edu.tw/handle/33372115863989530347 Genomic Analyses of the Complete Mitochondrial DNA Sequence of the Sponge, Cinachyrella australiensis (Demospongiae: Spirophorida) 澳洲球形海綿完整粒線體DNA序列及分析研究 Sheng-Tai Hsiao 蕭聖代 碩士 國立中山大學 海洋資源學系研究所 93 Sponges (Porifera) are the most primitive multicellular animals that are highly diverse and complex associated with other organisms, microbes especially. Recently, sponges have received a lot of attention as they are a rich source of nature products with antiviral, antitumor, and antimicrobial activities. Sponges play such important roles in so many marine habitats but little is known about their diversity, biology and ecology as compared with most other animal groups. Moreover, due to limited information provided based on morphology, other method of classification is need. Mitochondrial DNA sequence may fulfill such purpose. The complete nucleotide sequence (19444 bp) of the mt genome of the Cinachyrella australiensis (Demospongiae: Spirophorida) was determined. The genome contains the two rRNA, 24 tRNA and 14 protein-coding genes. We found that poriferan mtDNAs resemble those of other animals in their compact organization, and a well-conserved animal-like gene order. However, this molecule has several unique features: the ATP 9 gene is the first found to be present in the mt genome of multicellular animals, the cytochrome c oxidase subunit I (COI) gene include a group I intron, and encode bacteria-like tRNA. The results represent that the evolution of metazoan mtDNA has been a multistep process to the reduction of tRNA and the introduction of multiple changes of the translation code. Chi-Hsin Hsu 徐基新 2005 學位論文 ; thesis 108 en_US |
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碩士 === 國立中山大學 === 海洋資源學系研究所 === 93 === Sponges (Porifera) are the most primitive multicellular animals that are highly diverse and complex associated with other organisms, microbes especially. Recently, sponges have received a lot of attention as they are a rich source of nature products with antiviral, antitumor, and antimicrobial activities. Sponges play such important roles in so many marine habitats but little is known about their diversity, biology and ecology as compared with most other animal groups. Moreover, due to limited information provided based on morphology, other method of classification is need. Mitochondrial DNA sequence may fulfill such purpose. The complete nucleotide sequence (19444 bp) of the mt genome of the Cinachyrella australiensis (Demospongiae: Spirophorida) was determined. The genome contains the two rRNA, 24 tRNA and 14 protein-coding genes. We found that poriferan mtDNAs resemble those of other animals in their compact organization, and a well-conserved animal-like gene order. However, this molecule has several unique features: the ATP 9 gene is the first found to be present in the mt genome of multicellular animals, the cytochrome c oxidase subunit I (COI) gene include a group I intron, and encode bacteria-like tRNA. The results represent that the evolution of metazoan mtDNA has been a multistep process to the reduction of tRNA and the introduction of multiple changes of the translation code.
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author2 |
Chi-Hsin Hsu |
author_facet |
Chi-Hsin Hsu Sheng-Tai Hsiao 蕭聖代 |
author |
Sheng-Tai Hsiao 蕭聖代 |
spellingShingle |
Sheng-Tai Hsiao 蕭聖代 Genomic Analyses of the Complete Mitochondrial DNA Sequence of the Sponge, Cinachyrella australiensis (Demospongiae: Spirophorida) |
author_sort |
Sheng-Tai Hsiao |
title |
Genomic Analyses of the Complete Mitochondrial DNA Sequence of the Sponge, Cinachyrella australiensis (Demospongiae: Spirophorida) |
title_short |
Genomic Analyses of the Complete Mitochondrial DNA Sequence of the Sponge, Cinachyrella australiensis (Demospongiae: Spirophorida) |
title_full |
Genomic Analyses of the Complete Mitochondrial DNA Sequence of the Sponge, Cinachyrella australiensis (Demospongiae: Spirophorida) |
title_fullStr |
Genomic Analyses of the Complete Mitochondrial DNA Sequence of the Sponge, Cinachyrella australiensis (Demospongiae: Spirophorida) |
title_full_unstemmed |
Genomic Analyses of the Complete Mitochondrial DNA Sequence of the Sponge, Cinachyrella australiensis (Demospongiae: Spirophorida) |
title_sort |
genomic analyses of the complete mitochondrial dna sequence of the sponge, cinachyrella australiensis (demospongiae: spirophorida) |
publishDate |
2005 |
url |
http://ndltd.ncl.edu.tw/handle/33372115863989530347 |
work_keys_str_mv |
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