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Transcription regulation and plant d...

Kirst, Matias.

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Transcription regulation and plant diversity.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Transcription regulation and plant diversity./
Author:	Kirst, Matias.
Description:	150 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5333.
Contained By:	Dissertation Abstracts International64-11B.
Subject:	Biology, Genetics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3112799

Transcription regulation and plant diversity.
Kirst, Matias.

Transcription regulation and plant diversity. - 150 p.

Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5333.

Thesis (Ph.D.)--North Carolina State University, 2004.

Comparative genomics of yeast, nematodes, flies and humans demonstrate that the developmental, morphological and behavioral diversity of multicellular eukaryotes evolved primarily from differential regulation of a similar core set of genes. In the first part of this study, a comparative analysis of the functional genome of higher plants was carried out by analyzing the gene sequence similarity from the angiosperm <italic>Arabidopsis thaliana</italic> to a unigene set derived from 59,797 expressed sequence tags (ESTs) from wood-forming tissues of the coniferous <italic>Pinus taeda</italic> L. (loblolly pine). Both species last shared a common ancestor 300 million years ago and differ greatly in morphology, life-span and genome size. A detailed analysis of long, high-quality sequence contigs, generated by clustering the loblolly pine ESTs, demonstrated that over 90% have an apparent <italic>Arabidopsis</italic> homolog (E-value < 10<super>−10</super>). Substantial conservation of gene sequence in seed plants suggests that morphological and developmental diversity arose by differential regulation of expression of a common core set of genes, rather than acquisition or creation of new ones.Subjects--Topical Terms:

1017730
Biology, Genetics.

Transcription regulation and plant diversity.
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035 $a (UnM)AAI3112799
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100 1 $a Kirst, Matias. $3 1943973
245 1 0 $a Transcription regulation and plant diversity.
300 $a 150 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5333.
500 $a Director: Ronald R. Sederoff.
502 $a Thesis (Ph.D.)--North Carolina State University, 2004.
520 $a Comparative genomics of yeast, nematodes, flies and humans demonstrate that the developmental, morphological and behavioral diversity of multicellular eukaryotes evolved primarily from differential regulation of a similar core set of genes. In the first part of this study, a comparative analysis of the functional genome of higher plants was carried out by analyzing the gene sequence similarity from the angiosperm <italic>Arabidopsis thaliana</italic> to a unigene set derived from 59,797 expressed sequence tags (ESTs) from wood-forming tissues of the coniferous <italic>Pinus taeda</italic> L. (loblolly pine). Both species last shared a common ancestor 300 million years ago and differ greatly in morphology, life-span and genome size. A detailed analysis of long, high-quality sequence contigs, generated by clustering the loblolly pine ESTs, demonstrated that over 90% have an apparent <italic>Arabidopsis</italic> homolog (E-value < 10<super>−10</super>). Substantial conservation of gene sequence in seed plants suggests that morphological and developmental diversity arose by differential regulation of expression of a common core set of genes, rather than acquisition or creation of new ones.
520 $a Evolution of the genetic regulation of gene expression can be studied on a genome-wide scale using microarrays to analyze the genetic architecture of transcript variation in different genetic backgrounds. Gene expression variation was studied in the genus <italic>Eucalyptus</italic> by microarray analysis of mRNA abundance in the differentiating xylem of a <italic>E. grandis </italic> pseudo-backcross population (F<sub>1</sub> hybrid [<italic>E. grandis </italic> x <italic>E. globulus</italic>] x <italic>E. grandis</italic>). Relative estimates of transcript levels were generated for 2608 genes in 91 individuals of the progeny and mapped as gene expression QTLs (eQTLs) in two single-tree genetic maps. The F<sub>1</sub> hybrid paternal map describes the effects of the <italic>E. globulus</italic> and <italic>E. grandis</italic> alleles in the backcross population and the <italic>E. grandis</italic> map describes the effect of the pure species. eQTLs were identified for 1067 genes in both maps and typically displayed a simple genetic architecture. eQTLs for functionally related genes frequently clustered in the same genomic regions, suggesting <italic>trans</italic>-regulation by common transcription regulators. For 195 genes, eQTLs could be mapped to both single-tree maps but did not typically localize to homologous linkage groups, indicating that variation of transcript regulation occurs normally in <italic>trans</italic>-, with low conservation of points of regulation in different genetic backgrounds.
520 $a <italic>E. grandis</italic> and <italic>E. globulus</italic> have contrasting wood properties and growth. Crosses between the two species have resulted in wide genetic and phenotypic segregation and are useful to study the genetic architecture of quantitative variation in wood quality and growth traits. (Abstract shortened by UMI.)
590 $a School code: 0155.
650 4 $a Biology, Genetics. $3 1017730
650 4 $a Biology, Botany. $3 1017825
690 $a 0369
690 $a 0309
710 2 0 $a North Carolina State University. $3 1018772
773 0 $t Dissertation Abstracts International $g 64-11B.
790 1 0 $a Sederoff, Ronald R., $e advisor
790 $a 0155
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3112799