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Small RNA activity in archaeological barley shows novel germination inhibition in response to environment

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Smith, Oliver , Palmer, Sarah A., Clapham, Alan J., Rose, Pamela, Liu, Yuan, Wang, Jun and Allaby, Robin G. (2017) Small RNA activity in archaeological barley shows novel germination inhibition in response to environment. Molecular Biology and Evolution, 34 (10). pp. 2555-2562. doi:10.1093/molbev/msx175 ISSN 0737-4038.

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Official URL: http://dx.doi.org/10.1093/molbev/msx175

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Abstract

The recovery of ancient RNA from archaeological material could enable the direct study of micro-evolutionary processes. Small RNAs are a rich source of information because their small size is compatible with biomolecular preservation, and their roles in gene regulation make them likely foci of evolutionary change. We present here the small RNA fraction from a sample of archaeological barley generated using high-throughput sequencing that has previously been associated with localised adaptation to drought. Its microRNA profile is broadly similar to 19 globally distributed modern barley samples with the exception of three microRNAs (miRNA159, miRNA319, and miR396), all of which are known to have variable expression under stress conditions. We also found retrotransposon activity to be significantly reduced in the archaeological barley compared to the controls, where one would expect the opposite under stress conditions. We suggest that the archaeological barley’s conflicting stress signals could be the result of long-term adaptation to its local environment.

Item Type: Journal Article
Subjects: Q Science > QP Physiology
S Agriculture > SB Plant culture
Divisions: Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- )
Library of Congress Subject Headings (LCSH): Barley -- Genetics, RNA
Journal or Publication Title: Molecular Biology and Evolution
Publisher: Oxford University Press
ISSN: 0737-4038
Official Date: 1 October 2017
Dates:
DateEvent
1 October 2017Published
24 June 2017Available
25 May 2017Accepted
Volume: 34
Number: 10
Page Range: pp. 2555-2562
DOI: 10.1093/molbev/msx175
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 26 June 2017
Date of first compliant Open Access: 27 June 2017
Funder: Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC)
Grant number: BBSRC DTA BBG0177941

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