Special Issue "Gene Expression and Modification in Plant Organelles"
Deadline for manuscript submissions: closed (1 October 2021).
Interests: group II introns; splicing; RNA-binding cofactors; OXPHOS; mitogenome expression, mitochondria biogenesis
Mitochondria and chloroplasts serve as principal sites for cellular energy metabolism, and also play key roles in the biosynthesis of numerous essential metabolites for the plant cell. Although the challenges of maintaining prokaryotic-type structures and functions are common to Eukarya, plants possess some of the most complex organelle compositions of all known organisms. The organellar genomes in plants are very complex in terms of structure and function. Likewise, the expression of the mitochondrial and plastidial genomes in plants is highly complicated, with much of this control occurring at the post-transcriptional level. RNA-processing events which contribute to organellar expression in plants include trimming, RNA editing and the splicing of introns that disrupt the coding regions of genes required in both organellar translation (i.e., ribosomal or tRNA genes) and proteins required for photosynthetic- or respiratory-mediated functions. These essential RNA-processing steps are mediated by various RNA-binding proteins. Some are related to ancient RNA-binding factors, whereas other are specific to eukaryotes while being prominent to plants. Notably, RNA-processing enzymes comprise a staggering proportion of the plant organelle proteomes. Many appear to be regulated during specific growth and developmental stages, further signifying the importance of the RNA metabolism for organellar biogenesis and plant physiology.
While the complexity of organellar pre-RNA processing has already been documented, the identity of the factors involved in these essential activities and their specific roles in the RNA processing steps they regulate are more obscure.
This Special Issue in Genes (“Gene Expression and Modification in Plant Organelles”) aims to fill the remaining gaps in our understanding of (i) organellar RNA processing, (ii) the molecular functions of nuclear-encoded factors in organellar transcription, RNA metabolism and translation, (iii) how these complex RNA processes are linked to mitochondria or chloroplasts biogenesis and the assembly of respiratory and photosynthetic complexes, and (iv) how these pathways are regulated during plant development and in response to environmental signals. We would greatly appreciate it if you would agree to contribute a research paper, or a comprehensive review (more than 5000 words in the main text), on any aspect related to plant organellar gene expression and modification.
We look forward to your contributions.
Prof. Oren Ostersetzer-Biran
Manuscript Submission Information
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- Photosynthetic organisms
- Mitochondria, chloroplasts
- Gene expression and regulation
- RNA processing
- RNA binding proteins.