Version 1
: Received: 9 October 2023 / Approved: 10 October 2023 / Online: 10 October 2023 (10:39:14 CEST)
Version 2
: Received: 29 November 2023 / Approved: 30 November 2023 / Online: 30 November 2023 (14:11:08 CET)
Serrano, A.; Moret, M.; Fernández-Parras, I.; Bombarely, A.; Luque, F.; Navarro, F. RNA Polymerases IV and V Are Involved in Olive Fruit Development. Genes2024, 15, 1.
Serrano, A.; Moret, M.; Fernández-Parras, I.; Bombarely, A.; Luque, F.; Navarro, F. RNA Polymerases IV and V Are Involved in Olive Fruit Development. Genes 2024, 15, 1.
Serrano, A.; Moret, M.; Fernández-Parras, I.; Bombarely, A.; Luque, F.; Navarro, F. RNA Polymerases IV and V Are Involved in Olive Fruit Development. Genes2024, 15, 1.
Serrano, A.; Moret, M.; Fernández-Parras, I.; Bombarely, A.; Luque, F.; Navarro, F. RNA Polymerases IV and V Are Involved in Olive Fruit Development. Genes 2024, 15, 1.
Abstract
Transcription is carried out in most eukaryotes by three multimeric complexes (RNA polymerases I, II and III). However, plants contain two additional RNA polymerases (IV and V), which have evolved from RNA polymerase II. RNA polymerases II, IV and V contain both common and specific subunits that may specialize some of their functions. In this study, we conducted a search for the genes that putatively code for the specific subunits of RNA polymerases IV and V, as well as the corresponding of RNA polymerase II in olive. Based on the homology with the genes of Arabidopsis thaliana, we identified 13 genes that putatively code for the specific subunits of polymerases IV and V, and 16 genes that code for the corresponding specific subunits of polymerase II in olive. The transcriptomic analysis by RNA-Seq revealed that the expression of the RNA polymerases IV and V genes was induced during the initial stages of fruit development. Given that RNA polymerases IV and V are involved in the transcription of long non-coding RNAs, we investigated their expression and observed relevant changes in the expression of this type of RNAs. Particularly, the expression of the intergenic and intronic long non-coding RNAs tended to increase in the early steps of fruit development, suggesting their potential role in this process. The positive correlation between the expression of RNA polymerases IV and V subunits and the expression of non-coding RNAs supports the hypothesis that RNA polymerases IV and V may play a role in fruit development throughout the synthesis of this type of RNAs.
Keywords
RNA polymerases; long non-coding RNAs; olive, stress conditions; fruit development
Subject
Biology and Life Sciences, Plant Sciences
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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