Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2000-2-29
pubmed:databankReference
http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182320, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182321, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182322, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182323, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182324, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182325, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182326, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182327, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182328, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182329, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182330, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182331, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182332, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182333, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182334, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182335, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182336, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182337, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AF182338
pubmed:abstractText
The sequences of the mitochondrial ND4 gene (1339 bp) and the ND4L gene (290 bp) were determined for all the 14 extant taxa of the Drosophila nasuta subgroup. The average A + T content of ND4 genes is 76.5% and that of ND4L genes is 83.5%. A total of 114 variable sites were scored. The ND4 gene sequence divergence ranged from 0 to 5.4% within the subgroup. The substitution rate of the ND4 gene is about 1.25% per million years. The base substitution of the genes is strongly transition biased. Neighbor-joining and parsimony were used to construct a phylogeny based on the resultant sequence data set. According to these trees, five distinct mtDNA clades can be identified. D. niveifrons represents the most diverged lineage. D. sulfurigaster bilimbata and D. kepulauana form two independent lineages. The other two clades are the kohkoa complex and the albomicans complex. The kohkoa complex consists of D. sulfurigaster sulfurigaster, D. pulaua, D. kohkoa, and Taxon-F. The albomicans complex can be divided into two groups: D. nasuta, D. sulfurigaster neonasuta, D. sulfurigaster albostrigata, and D. albomicans from Chiangmai form one group; and D. pallidifrons, Taxon-I, Taxon-J, and D. albomicans from China form the other group. High genetic differentiation was found among D. albomicans populations. Based on our phylogenetic results, we hypothesize that D. niveifrons diverged first from the D. nasuta subgroup in Papua New Guinea about 3.5 Mya. The ancestral population spread to the north and when it reached Borneo, it diversified sequentially into the kohkoa complex, D. s. bilimbata, and D. kepulauana. About 1 Mya, another radiation occurred when the ancestral populations reached the Indo-China Peninsula, forming the albomicans complex. Discrepancy between morphological groupings and phylogenetic results suggests that the male morphological traits may not be orthologous.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1055-7903
pubmed:author
pubmed:copyrightInfo
Copyright 1999 Academic Press.
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
556-65
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Phylogeny and evolution of the Drosophila nasuta subgroup based on mitochondrial ND4 and ND4L gene sequences.
pubmed:affiliation
Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650223, People's Republic of China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't