Coordination of gene expression between organellar and nuclear genomes.
Jesse D. Woodson,Joanne Chory +1 more
TLDR
Recent advances in elucidating the intracellular signalling pathways that coordinate gene expression between organelles and the nucleus are reviewed, with a focus on photosynthetic plants.Abstract:
Following the acquisition of chloroplasts and mitochondria by eukaryotic cells during endosymbiotic evolution, most of the genes in these organelles were either lost or transferred to the nucleus. Encoding organelle-destined proteins in the nucleus allows for host control of the organelle. In return, organelles send signals to the nucleus to coordinate nuclear and organellar activities. In photosynthetic eukaryotes, additional interactions exist between mitochondria and chloroplasts. Here we review recent advances in elucidating the intracellular signalling pathways that coordinate gene expression between organelles and the nucleus, with a focus on photosynthetic plants.read more
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Reactive oxygen species homeostasis and signalling during drought and salinity stresses
TL;DR: An overview of ROS homeostasis and signalling in response to drought and salt stresses is provided and the current understanding of ROS involvement in stress sensing, stress signalling and regulation of acclimation responses is discussed.
Journal ArticleDOI
Reactive oxygen species, abiotic stress and stress combination.
TL;DR: ROS is beneficial to plants during abiotic stress enabling them to adjust their metabolism and mount a proper acclimation response, as long as cells maintain high enough energy reserves to detoxify ROS.
Journal ArticleDOI
ROS and redox signalling in the response of plants to abiotic stress
TL;DR: In this paper, the authors provide an update on ROS and redox signalling in the context of abiotic stress responses, while addressing their role in retrograde regulation, systemic acquired acclimation and cellular coordination in plants.
Journal ArticleDOI
Sensing and responding to excess light.
TL;DR: Indirect sensing of excess light through biochemical and metabolic signals can be transduced into local responses within chloroplasts, into changes in nuclear gene expression via retrograde signaling pathways, or even into systemic responses, all of which are associated with photoacclimation.
Journal ArticleDOI
The developmental dynamics of the maize leaf transcriptome
Pinghua Li,Lalit Ponnala,Neeru Gandotra,Lin Wang,Yaqing Si,S Lori Tausta,Tesfamichael H. Kebrom,Nicholas J. Provart,Rohan V. Patel,Christopher R. Myers,Edwin J. Reidel,Robert Turgeon,Peng Liu,Qi Sun,Timothy Nelson,Thomas P. Brutnell,Thomas P. Brutnell +16 more
TL;DR: A dynamic transcriptome is revealed, with transcripts for primary cell wall and basic cellular metabolism at the leaf base transitioning to transcripts for secondary cell wall biosynthesis and C4 photosynthetic development toward the tip.
References
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Genome-Wide Analysis of Arabidopsis Pentatricopeptide Repeat Proteins Reveals Their Essential Role in Organelle Biogenesis
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Gregory L. Blatch,Michael Lässle +1 more
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Evolutionary analysis of Arabidopsis, cyanobacterial, and chloroplast genomes reveals plastid phylogeny and thousands of cyanobacterial genes in the nucleus.
William Martin,Tamas Rujan,Erik Richly,Andrea Hansen,Sabine Cornelsen,Thomas Lins,Dario Leister,Bettina Stoebe,Masami Hasegawa,David Penny +9 more
TL;DR: A phylogeny of chloroplast genomes inferred from 41 proteins and 8,303 amino acids sites indicates that at least two independent secondary endosymbiotic events have occurred involving red algae and that amino acid composition bias in chloropleft proteins strongly affects plastid genome phylogeny.