Pi-starvation induced transcriptional changes in barley revealed by a comprehensive RNA-Seq and degradome analyses Pawel Sega Uniwersytet im Adama Mickiewicza w Poznaniu Wydzial Biologii https://orcid.org/0000-0001-5920- 7514 Katarzyna Kruszka Uniwersytet im Adama Mickiewicza w Poznaniu Wydzial Biologii Dawid Bielewicz Uniwersytet im Adama Mickiewicza w Poznaniu Wydzial Biologii Wojciech Karlowski Uniwersytet im Adama Mickiewicza w Poznaniu Wydzial Biologii Przemyslaw Nuc Uniwersytet im Adama Mickiewicza w Poznaniu Wydzial Biologii Zoa Szweykowska-Kulinska Uniwersytet im Adama Mickiewicza w Poznaniu Wydzial Biologii Andrzej Pacak (
[email protected] ) https://orcid.org/0000-0002-6968-9307 Research article Keywords: Phosphate regulatory network, Barley, Small RNAs, Degradome, RNA-Seq Posted Date: February 27th, 2020 DOI: https://doi.org/10.21203/rs.2.24665/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Version of Record: A version of this preprint was published on March 9th, 2021. See the published version at https://doi.org/10.1186/s12864-021-07481-w. Page 1/40 Abstract Background: Small RNAs (sRNAs) are 18–24 nt regulatory elements which are responsible for plant development regulation and participate in many plant stress responses. Insucient inorganic phosphate (Pi) concentration triggers plant responses to balance the internal Pi level. Results: In this study, we describe Pi-starvation-responsive small RNAs and transcriptome changes in barley (Hordeum vulgare L.) using Next-Generation Sequencing (NGS) data derived from three different types of NGS libraries: (i) small RNAs, (ii) degraded RNAs, and (iii) functional mRNAs. We nd that differentially and signicantly expressed miRNAs (DEMs, p-value < 0.05) are represented by 162 (44.88 % of total differentially expressed small RNAs) molecules in shoot and 138 (7.14 %) in root; mainly various miR399 and miR827 isomiRs.