Comparative analysis of divergent and convergent gene pairs and their expression patterns in rice, Arabidopsis, and populus.
Identifieur interne : 003875 ( Main/Corpus ); précédent : 003874; suivant : 003876Comparative analysis of divergent and convergent gene pairs and their expression patterns in rice, Arabidopsis, and populus.
Auteurs : Nicholas Krom ; Wusirika RamakrishnaSource :
- Plant physiology [ 0032-0889 ] ; 2008.
English descriptors
- KwdEn :
- Arabidopsis (genetics), Arabidopsis (metabolism), Computational Biology (MeSH), DNA, Intergenic (MeSH), Gene Expression (MeSH), Gene Order (MeSH), Genes, Plant (MeSH), Genomics (MeSH), Oryza (genetics), Oryza (metabolism), Populus (genetics), Populus (metabolism), Regulatory Elements, Transcriptional (MeSH), Sequence Analysis, DNA (MeSH), Species Specificity (MeSH).
- MESH :
- chemical : DNA, Intergenic.
- genetics : Arabidopsis, Oryza, Populus.
- metabolism : Arabidopsis, Oryza, Populus.
- Computational Biology, Gene Expression, Gene Order, Genes, Plant, Genomics, Regulatory Elements, Transcriptional, Sequence Analysis, DNA, Species Specificity.
Abstract
Comparative analysis of the organization and expression patterns of divergent and convergent gene pairs in multiple plant genomes can identify patterns that are shared by more than one species or are unique to a particular species. Here, we study the coexpression and interspecies conservation of divergent and convergent gene pairs in three plant species: rice (Oryza sativa), Arabidopsis (Arabidopsis thaliana), and black cottonwood (Populus trichocarpa). Strongly correlated expression levels between divergent and convergent genes were found to be quite common in all three species, and the frequency of strong correlation appears to be independent of intergenic distance. Conservation of divergent or convergent arrangement among these species appears to be quite rare. However, conserved arrangement is significantly more frequent when the genes display strongly correlated expression levels or have one or more Gene Ontology (GO) classes in common. A correlation between intergenic distance in divergent and convergent gene pairs and shared GO classes was observed, in varying degrees, in rice and Populus but not in Arabidopsis. Furthermore, multiple GO classes were either overrepresented or underrepresented in Arabidopsis and Populus gene pairs, while only two GO classes were underrepresented in rice divergent gene pairs. Three cis-regulatory elements common to both Arabidopsis and rice were overrepresented in the intergenic regions of strongly correlated divergent gene pairs compared to those of noncorrelated pairs. Our results suggest that shared as well as unique mechanisms operate in shaping the organization and function of divergent and convergent gene pairs in different plant species.
DOI: 10.1104/pp.108.122416
PubMed: 18515639
PubMed Central: PMC2492640
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pubmed:18515639Le document en format XML
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Here, we study the coexpression and interspecies conservation of divergent and convergent gene pairs in three plant species: rice (Oryza sativa), Arabidopsis (Arabidopsis thaliana), and black cottonwood (Populus trichocarpa). Strongly correlated expression levels between divergent and convergent genes were found to be quite common in all three species, and the frequency of strong correlation appears to be independent of intergenic distance. Conservation of divergent or convergent arrangement among these species appears to be quite rare. However, conserved arrangement is significantly more frequent when the genes display strongly correlated expression levels or have one or more Gene Ontology (GO) classes in common. A correlation between intergenic distance in divergent and convergent gene pairs and shared GO classes was observed, in varying degrees, in rice and Populus but not in Arabidopsis. Furthermore, multiple GO classes were either overrepresented or underrepresented in Arabidopsis and Populus gene pairs, while only two GO classes were underrepresented in rice divergent gene pairs. Three cis-regulatory elements common to both Arabidopsis and rice were overrepresented in the intergenic regions of strongly correlated divergent gene pairs compared to those of noncorrelated pairs. Our results suggest that shared as well as unique mechanisms operate in shaping the organization and function of divergent and convergent gene pairs in different plant species.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">18515639</PMID><DateCompleted><Year>2008</Year><Month>10</Month><Day>14</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0032-0889</ISSN><JournalIssue CitedMedium="Print"><Volume>147</Volume><Issue>4</Issue><PubDate><Year>2008</Year><Month>Aug</Month></PubDate></JournalIssue><Title>Plant physiology</Title><ISOAbbreviation>Plant Physiol</ISOAbbreviation></Journal><ArticleTitle>Comparative analysis of divergent and convergent gene pairs and their expression patterns in rice, Arabidopsis, and populus.</ArticleTitle><Pagination><MedlinePgn>1763-73</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1104/pp.108.122416</ELocationID><Abstract><AbstractText>Comparative analysis of the organization and expression patterns of divergent and convergent gene pairs in multiple plant genomes can identify patterns that are shared by more than one species or are unique to a particular species. Here, we study the coexpression and interspecies conservation of divergent and convergent gene pairs in three plant species: rice (Oryza sativa), Arabidopsis (Arabidopsis thaliana), and black cottonwood (Populus trichocarpa). Strongly correlated expression levels between divergent and convergent genes were found to be quite common in all three species, and the frequency of strong correlation appears to be independent of intergenic distance. Conservation of divergent or convergent arrangement among these species appears to be quite rare. However, conserved arrangement is significantly more frequent when the genes display strongly correlated expression levels or have one or more Gene Ontology (GO) classes in common. A correlation between intergenic distance in divergent and convergent gene pairs and shared GO classes was observed, in varying degrees, in rice and Populus but not in Arabidopsis. Furthermore, multiple GO classes were either overrepresented or underrepresented in Arabidopsis and Populus gene pairs, while only two GO classes were underrepresented in rice divergent gene pairs. Three cis-regulatory elements common to both Arabidopsis and rice were overrepresented in the intergenic regions of strongly correlated divergent gene pairs compared to those of noncorrelated pairs. 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