Altered expression of nuclear genes encoding chloroplast polypeptides in non-photosynthetic mutants ofChlamydomonas reinhardtii: evidence for post-transcriptional regulation

1996 ◽  
Vol 252 (4) ◽  
pp. 362-370
Author(s):  
D. Hahn ◽  
U. Kück ◽  
P. Bennoun
Keyword(s):  
Transcriptional Regulation ◽  
Nuclear Genes ◽  
Altered Expression ◽  
Genes Encoding ◽  
Photosynthetic Mutants ◽  
Post Transcriptional Regulation

scholarly journals Post-transcriptional Regulation of Genes Encoding Anti-microbial Peptides inDrosophila

2009 ◽  
Vol 284 (13) ◽  
pp. 8973-8983 ◽  
Author(s):  
Aurélien Lauwers ◽  
Laure Twyffels ◽  
Romuald Soin ◽  
Corinne Wauquier ◽  
Véronique Kruys ◽  
...  
Keyword(s):  
Transcriptional Regulation ◽  
Genes Encoding ◽  
Post Transcriptional Regulation

scholarly journals Transcriptional and Post-transcriptional Regulation of Organellar Gene Expression (OGE) and Its Roles in Plant Salt Tolerance

2019 ◽  
Vol 20 (5) ◽  
pp. 1056 ◽  
Author(s):  
Pedro Robles ◽  
Víctor Quesada
Keyword(s):  
Gene Expression ◽  
Salt Tolerance ◽  
Nuclear Genome ◽  
Nuclear Genes ◽  
Plant Tolerance ◽  
Adverse Conditions ◽  
Transport Chain ◽  
Genes Encoding ◽  
Plant Salt Tolerance ◽  
Post Transcriptional Regulation

Given their endosymbiotic origin, chloroplasts and mitochondria genomes harbor only between 100 and 200 genes that encode the proteins involved in organellar gene expression (OGE), photosynthesis, and the electron transport chain. However, as the activity of these organelles also needs a few thousand proteins encoded by the nuclear genome, a close coordination of the gene expression between the nucleus and organelles must exist. In line with this, OGE regulation is crucial for plant growth and development, and is achieved mainly through post-transcriptional mechanisms performed by nuclear genes. In this way, the nucleus controls the activity of organelles and these, in turn, transmit information about their functional state to the nucleus by modulating nuclear expression according to the organelles’ physiological requirements. This adjusts organelle function to plant physiological, developmental, or growth demands. Therefore, OGE must appropriately respond to both the endogenous signals and exogenous environmental cues that can jeopardize plant survival. As sessile organisms, plants have to respond to adverse conditions to acclimate and adapt to them. Salinity is a major abiotic stress that negatively affects plant development and growth, disrupts chloroplast and mitochondria function, and leads to reduced yields. Information on the effects that the disturbance of the OGE function has on plant tolerance to salinity is still quite fragmented. Nonetheless, many plant mutants which display altered responses to salinity have been characterized in recent years, and interestingly, several are affected in nuclear genes encoding organelle-localized proteins that regulate the expression of organelle genes. These results strongly support a link between OGE and plant salt tolerance, likely through retrograde signaling. Our review analyzes recent findings on the OGE functions required by plants to respond and tolerate salinity, and highlights the fundamental role that chloroplast and mitochondrion homeostasis plays in plant adaptation to salt stress.

43-OR: Post-transcriptional Regulation of Slc16a1 mRNA Is Essential for Maintaining Normal ß-Cell Function

Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 43-OR
Author(s):  
DINA MOSTAFA ◽  
AKINORI TAKAHASHI ◽  
TADASHI YAMAMOTO
Keyword(s):  
Transcriptional Regulation ◽  
Cell Function ◽  
Post Transcriptional Regulation
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