Abstract：
:The evolution rates of mtDNA in early metazoans hold important implications for DNA barcoding. Here, we present a comprehensive analysis of intra- and interspecific COI variabilities in Porifera and Cnidaria (separately as Anthozoa, Hydrozoa, and Scyphozoa) using a data set of 619 sequences from 224 species. We found variation within and between species to be much lower in Porifera and Anthozoa compared to Medusozoa (Hydrozoa and Scyphozoa), which has divergences similar to typical metazoans. Given that recent evidence has shown that fungi also exhibit limited COI divergence, slow-evolving mtDNA is likely to be plesiomorphic for the Metazoa. Higher rates of evolution could have originated independently in Medusozoa and Bilateria or been acquired in the Cnidaria + Bilateria clade and lost in the Anthozoa. Low identification success and substantial overlap between intra- and interspecific COI distances render the Anthozoa unsuitable for DNA barcoding. Caution is also advised for Porifera and Hydrozoa because of relatively low identification success rates as even threshold divergence that maximizes the "barcoding gap" does not improve identification success.
journal_name
J Mol Evoljournal_title
Journal of molecular evolutionauthors
Huang D,Meier R,Todd PA,Chou LMdoi
10.1007/s00239-008-9069-5subject
Has Abstractpub_date
2008-02-01 00:00:00pages
167-74issue
2eissn
0022-2844issn
1432-1432journal_volume
66pub_type
杂志文章abstract：:Sequence divergence among orthologous proteins was characterized with 34 amino acid replacement matrices, sequence context analysis, and a phylogenetic tree. The model was trained on very large datasets of aligned protein sequences drawn from 15 organisms including protists, plants, Dictyostelium, fungi, and animals. ...
journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/s00239-005-0060-0
更新日期：2005-11-01 00:00:00
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journal_title：Journal of molecular evolution
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doi：10.1007/BF02338801
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/BF01731000
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/s002399910031
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
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更新日期：1996-02-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/BF02100039
更新日期：1987-01-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/BF01732544
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
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更新日期：1981-01-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/BF00163849
更新日期：1992-01-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/BF02099952
更新日期：1986-01-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/pl00006510
更新日期：1999-06-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/s00239-003-2563-x
更新日期：2004-04-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/s00239-010-9328-0
更新日期：2010-03-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/BF00175497
更新日期：1994-01-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/s00239-016-9765-5
更新日期：2017-01-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/BF01795749
更新日期：1981-01-01 00:00:00
abstract：:Complement control proteins (CCPs) contain repeated protein domains, short consensus repeats (SCRs), which must be relevant to diverse functions such as complement activation, coagulation, viral binding, fetal implantation, and self-nonself recognition. Although SCRs share some discontinuous and imperfect motifs, ther...
journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/s00239-004-2609-8
更新日期：2004-08-01 00:00:00
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更新日期：2005-04-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
doi：10.1007/BF01795752
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journal_title：Journal of molecular evolution
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更新日期：2008-08-01 00:00:00
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更新日期：1998-10-01 00:00:00
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更新日期：2011-12-01 00:00:00
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journal_title：Journal of molecular evolution
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更新日期：1994-12-01 00:00:00
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journal_title：Journal of molecular evolution
pub_type： 杂志文章
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更新日期：1987-01-01 00:00:00
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pub_type： 杂志文章
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更新日期：1987-01-01 00:00:00
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