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Different Families of Retrotransposons and DNA Transposons Are Actively Transcribed and May Have Transposed Recently in Physcomitrium (Physcomitrella) patens

Vendrell-Mir, Pol and Lopez Obando, Mauricio and Nogue, Fabien and Casacuberta, Josep M. (2020). Different Families of Retrotransposons and DNA Transposons Are Actively Transcribed and May Have Transposed Recently in Physcomitrium (Physcomitrella) patens. Frontiers in Plant Science. 11 , 1274
[Journal article]

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Abstract

Similarly to other plant genomes of similar size, more than half of the genome ofP. patensis covered by Transposable Elements (TEs). However, the composition and distribution ofP. patensTEs is quite peculiar, with Long Terminal Repeat (LTR)-retrotransposons, which form patches of TE-rich regions interleaved with gene-rich regions, accounting for the vast majority of the TE space. We have already shown that RLG1, the most abundant TE inP. patens, is expressed in non-stressed protonema tissue. Here we present a non-targeted analysis of the TE expression based on RNA-Seq data and confirmed by qRT-PCR analyses that shows that, at least four LTR-RTs (RLG1, RLG2, RLC4 and tRLC5) and one DNA transposon (PpTc2) are expressed inP. patens. These TEs are expressed during development or under stresses thatP. patensfrequently faces, such as dehydratation/rehydratation stresses, suggesting that TEs have ample possibilities to transpose duringP. patenslife cycle. Indeed, an analysis of the TE polymorphisms among four differentP. patensaccessions shows that different TE families have recently transposed in this species and have generated genetic variability that may have phenotypic consequences, as a fraction of the TE polymorphisms are within or close to genes. Among the transcribed and mobile TEs, tRLC5 is particularly interesting as it concentrates in a single position per chromosome that could coincide with the centromere, and its expression is specifically induced in young sporophyte, where meiosis takes place.

Authors/Creators:Vendrell-Mir, Pol and Lopez Obando, Mauricio and Nogue, Fabien and Casacuberta, Josep M.
Title:Different Families of Retrotransposons and DNA Transposons Are Actively Transcribed and May Have Transposed Recently in Physcomitrium (Physcomitrella) patens
Year of publishing :2020
Volume:11
Article number:1274
Number of Pages:13
ISSN:1664-462X
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Genetics (medical genetics to be 30107 and agricultural genetics to be 40402)
Keywords:Physcomitrium (Physcomitrella) patens, transposable element, transcription, genetic variability, centromere
URN:NBN:urn:nbn:se:slu:epsilon-p-107886
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107886
Additional ID:
Type of IDID
DOI10.3389/fpls.2020.01274
Web of Science (WoS)000566212100001
ID Code:17613
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Plant Biology and Forest Genetics (until 131231)
Deposited By: SLUpub Connector
Deposited On:28 Sep 2020 10:45
Metadata Last Modified:28 Sep 2020 10:51

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