Analysis of adaptive ribosomal gene diversity in wild plant populations from contrasting climatic environments

Shapter, Frances M., Fitzgerald, Timothy L., Waters, Daniel L.E., McDonald, Stuart, Chivers, Ian H., Nevo, Eviatar and Henry, Robert (2012) Analysis of adaptive ribosomal gene diversity in wild plant populations from contrasting climatic environments. Plant Signaling and Behavior, 7 6: 602-604.

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Author Shapter, Frances M.
Fitzgerald, Timothy L.
Waters, Daniel L.E.
McDonald, Stuart
Chivers, Ian H.
Nevo, Eviatar
Henry, Robert
Title Analysis of adaptive ribosomal gene diversity in wild plant populations from contrasting climatic environments
Journal name Plant Signaling and Behavior  (ERA 2012 Listed)    (ERA 2010 Rank C)   Check publisher's open access policy
Publication date 2012-06
Sub-type Article
DOI 10.4161/psb.19938
Volume number 7
Issue number 6
ISSN 1559-2316; 1559-2324
Start page 602
End page 604
Total pages 3
Place of publication Austin, TX, Australia
Publisher Landes Bioscience
Collection year 2013
Language eng
Formatted abstract Plant populations may contain variation that reflects adaptation to local environmental conditions. Clues to adaptive evolution of plants may be found in the genomes of species growing in diverse environments or across steep environmental gradients, and under stress. We have examined populations of wild relatives of barley and rice across diverse environmental gradients. Greater diversity, in a nuclear biotic stress defense gene and in chloroplast genes, was found in the more stressed, hotter and dryer environments. This may reflect the greater heterogeneity of these environments. Adaptation of plants to different abiotic stresses (temperatures and levels of water availability) may also require significant adaptation to the different biotic (pest and disease) pressures in these environments.

Plants growing across environmental gradients revealed greater diversity in a defense gene (Isa) in more stressed, hotter and dryer environments.2 Chloroplast genome diversity also exhibited a similar variation with environment.3 We now report analysis of nuclear ribosomal genes from the same wild population. Two contrasting environments did not show significant differences in the level of diversity. However the pattern of SNP distribution within the rDNA did vary with greater SNP density in the RNA coding sequences compared with the internal transcribed spacers.
Keyword Genome diversity
Climate
Grasses
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2013 Collection
 
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Created: Fri, 28 Sep 2012, 13:37:56 EST by Annie Morley on behalf of Qld Alliance for Agriculture and Food Innovation