Study on the genetic diversity and its seasonal variation of phytoplankton in the Jiaozhou Bay

LIU Yong-jian; YANG Guan-pin; GUAN Xiao-jing; MEN Rong-xin

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LIU Yong-jian, YANG Guan-pin, GUAN Xiao-jing, MEN Rong-xin. Study on the genetic diversity and its seasonal variation of phytoplankton in the Jiaozhou Bay[J]. Haiyang Xuebao, 2005, 27(5): 103-111.

Citation:

LIU Yong-jian, YANG Guan-pin, GUAN Xiao-jing, MEN Rong-xin. Study on the genetic diversity and its seasonal variation of phytoplankton in the Jiaozhou Bay[J]. Haiyang Xuebao, 2005, 27(5): 103-111.

LIU Yong-jian, YANG Guan-pin, GUAN Xiao-jing, MEN Rong-xin. Study on the genetic diversity and its seasonal variation of phytoplankton in the Jiaozhou Bay[J]. Haiyang Xuebao, 2005, 27(5): 103-111.

Citation:

LIU Yong-jian, YANG Guan-pin, GUAN Xiao-jing, MEN Rong-xin. Study on the genetic diversity and its seasonal variation of phytoplankton in the Jiaozhou Bay[J]. Haiyang Xuebao, 2005, 27(5): 103-111.

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Study on the genetic diversity and its seasonal variation of phytoplankton in the Jiaozhou Bay

College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China

Received Date: 2004-09-22
Rev Recd Date: 2005-03-17

Abstract

Abstract

Ribulose-1,5-bispho sphate carboxynase/oxygenase large subunit gene(rbcL) of phytoplankton DNAs of Jiao zhou Bay surface seawater was amplified in spring,summer and autumn and cloned respectively.One hundred and forty five clones about 50 each library were randomly selected and sequenced.Ifidentical aminoacid sequences are considered as the same operational taxonomy unit(OTU),59 OTUs are identified according to inferred amino acid sequences.Among these OTUs,21 are specific for spring seawater,13 are specific for summer seawater and 23 are specific for autumn seawater.Two OTUs are shared by summer and autumn.Shannon's index calculated from OTU abundances reflects the genetic diversity level of a community.The indexes of spring,summer and autumn surface seawater phytoplankt on are 2.69,2.44 and 2.76 respectively,indicating that phyt oplankt on genetic diversity of autumn seawater is the richest.Seasonal variation of phy to plankt on community is significant;the community compositions of three seasons are almost completely dif ferent except for two OTUs shared by summer and autumn.Surface seawater phytoplankton communities are possibly metacomm unities different spatially and temporally.
- phyt oplankt on,
- ribulose-1,5-bisphosphate carboxynase/oxyg enase large subunit gene(rbcL),
- community structure,
- seasonal variation

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References(24)

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