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The molecular analysis of marine alg...

Short, Steven Michael.

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The molecular analysis of marine algal virus communities.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	The molecular analysis of marine algal virus communities./
作者:	Short, Steven Michael.
面頁冊數:	97 p.
附註:	Adviser: C. A. Suttle.
Contained By:	Dissertation Abstracts International64-05B.
標題:	Biology, Genetics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ79260
ISBN:	9780612792609

The molecular analysis of marine algal virus communities.
Short, Steven Michael.

The molecular analysis of marine algal virus communities. - 97 p.

Adviser: C. A. Suttle.

Thesis (Ph.D.)--The University of British Columbia (Canada), 2003.

Viruses are abundant members of marine microbial communities and important components of marine food webs and geochemical cycles. Previously, PCR was used to amplify DNA polymerase gene fragments from algal viruses belonging to the family Phycodnaviridae. The Phyconaviridae are described by the International Committee on Taxonomy of Viruses as large (genomes >300 kbp) dsDNA viruses lacking envelopes that infect algae. In order to examine algal virus communities, I developed a denaturing gradient gel electrophoresis (DGGE) protocol to rapidly fingerprint gene fragments amplified from marine algal viruses. This thesis describes the development of this fingerprinting method and its application to the study of marine algal viruses in nature.

ISBN: 9780612792609Subjects--Topical Terms:

1017730
Biology, Genetics.

The molecular analysis of marine algal virus communities.
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100 1 $a Short, Steven Michael. $3 1270247
245 1 4 $a The molecular analysis of marine algal virus communities.
300 $a 97 p.
500 $a Adviser: C. A. Suttle.
500 $a Source: Dissertation Abstracts International, Volume: 64-05, Section: B, page: 2071.
502 $a Thesis (Ph.D.)--The University of British Columbia (Canada), 2003.
520 $a Viruses are abundant members of marine microbial communities and important components of marine food webs and geochemical cycles. Previously, PCR was used to amplify DNA polymerase gene fragments from algal viruses belonging to the family Phycodnaviridae. The Phyconaviridae are described by the International Committee on Taxonomy of Viruses as large (genomes >300 kbp) dsDNA viruses lacking envelopes that infect algae. In order to examine algal virus communities, I developed a denaturing gradient gel electrophoresis (DGGE) protocol to rapidly fingerprint gene fragments amplified from marine algal viruses. This thesis describes the development of this fingerprinting method and its application to the study of marine algal viruses in nature.
520 $a Initially, PCR and DGGE were used to resolve similar sized products amplified from related but relatively dissimilar virus templates. PCR with degenerate algal-virus-specific primers was used to amplify pol gene fragments from three cultured viruses that infect microalgae and a naturally occurring virus community. Although amplification from all samples resulted in PCR products approximately 700 by in length, the fragments from cultured viruses focused at different locations in a denaturing gradient gel and several bands were resolved in the natural sample.
520 $a To determine if pol fragments of similar sequence could be amplified from geographically distant areas, natural algal virus communities were obtained from coastal sites in the Pacific Ocean in British Columbia, Canada, and the Southern Ocean near the Antarctic Peninsula. Genetic fingerprints of algal virus communities were generated using DGGE. DNA polymerase gene fragments were recovered and sequenced from 25 bands extracted from the gradient gel. All 25 sequences fell outside the clusters of known algal viruses, but were within the Phycodnaviridae.
520 $a The temporal variability of natural algal virus communities and the co-occurring eukaryotic plankton were studied at a single location on a weekly basis over fourteen months. The changes in the community were related to physical and biological characteristics of the environment. Comparison of algal virus fingerprints with environmental conditions revealed that, at certain times, changes in algal virus community composition were coincident with changes in tide height, salinity, or chlorophyll a concentration. (Abstract shortened by UMI.)
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650 4 $a Biology, Microbiology. $3 1017734
650 4 $a Biology, Oceanography. $3 783691
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791 $a Ph.D.
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