In plants, expression breadth and expression level distinctly and non-linearly correlate with gene structure.

Biology Direct
Hangxing Yang

Abstract

Compactness of highly/broadly expressed genes in human has been explained as selection for efficiency, regional mutation biases or genomic design. However, highly expressed genes in flowering plants were shown to be less compact than lowly expressed ones. On the other hand, opposite facts have also been documented that pollen-expressed Arabidopsis genes tend to contain shorter introns and highly expressed moss genes are compact. This issue is important because it provides a chance to compare the selectionism and the neutralism views about genome evolution. Furthermore, this issue also helps to understand the fates of introns, from the angle of gene expression. In this study, I used expression data covering more tissues and employ new analytical methods to reexamine the correlations between gene expression and gene structure for two flowering plants, Arabidopsis thaliana and Oryza sativa. It is shown that, different aspects of expression pattern correlate with different parts of gene sequences in distinct ways. In detail, expression level is significantly negatively correlated with gene size, especially the size of non-coding regions, whereas expression breadth correlates with non-coding structural parameters positively and with...Continue Reading

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Nov 8, 2011·BMC Evolutionary Biology·Adi BarzelLilach Hadany
May 15, 2010·Biology Direct·You S RaoXi Q Zhang
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Mar 13, 2021·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Shuwei DongHui Song

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Datasets Mentioned

BETA
GPL2025

Methods Mentioned

BETA
PCA
oligonucleotide
Rice

Software Mentioned

R
Biology
MPSS

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