Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

The appearance of the new generation in higher plants is ensured by the presence of viable seeds in the mother plant. A good number of signaling networks is necessary to provoke germination. Phytohormones play a key role in all stages of seed development, maturation, and dormancy acquisition. The dormancy of some seeds can be relieved through a tightly regulated process called after-ripening (AR) that occurs in viable seeds stored in a dry environment. Although ABA is directly involved in dormancy, recent data suggest that auxin also plays a preponderant role. On the other hand, the participation of reactive oxygen species (ROS) in the life of the seed is becoming increasingly confirmed. ROS accumulate at different stages of the seed’s life and are correlated with a low degree of dormancy. Thus, ROS increase upon AR and dormancy release. In the last decade, the advances in the knowledge of seed life have been noteworthy. In this Special Issue, those processes regulated by DOG1, auxin, and nucleic acid modifications are updated. Likewise, new data on the effect of alternating temperatures (AT) on dormancy release are here present. On the one hand, the transcriptome patterns stimulated at AT that encompasses ethylene and ROS signaling and metabolism together with ABA degradation were also discussed. Finally, it was also suggested that changes in endogenous γ-aminobutyric acid (GABA) may prevent seed germination.

Research & information: general --- Biology, life sciences --- chestnut --- GABA --- seed germination --- carbon metabolism --- nitrogen metabolism --- DOG1 --- seed dormancy --- ABA --- ethylene --- clade-A PP2C phosphatase (AHG1 --- AHG3) --- after-ripening --- asDOG1 --- heme-group --- association mapping --- climate adaptation --- germination --- genomics --- legumes --- Medicago --- plasticity --- physical dormancy --- DNA methylation --- oxidation --- RNA stability --- seed vigour --- ROS --- primary dormancy --- ABI3 --- auxin --- YUC --- PIN --- ARF --- endosperm --- integuments --- AGL62 --- PRC2 --- RNA-Seq --- dormancy termination --- gene expression --- antioxidants --- ethylene signaling --- environmental signals --- long-lived mRNA --- monosomes --- auxin and ABA --- alternating temperatures

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

The diversity of RNAs inside living cells is amazing. We have known of the more “classic” RNA species: mRNA, tRNA, rRNA, snRNA and snoRNA for some time now, but in a steady stream new types of molecules are being described as it is becoming clear that most of the genomic information of cells ends up in RNA. To deal with the enormous load of resulting RNA processing and degradation reactions, cells need adequate and efficient molecular machines. The RNA exosome is arising as a major facilitator to this effect. Structural and functional data gathered over the last decade have illustrated the biochemical importance of this multimeric complex and its many co-factors, revealing its enormous regulatory power. By gathering some of the most prominent researchers in the exosome field, it is the aim of this volume to introduce this fascinating protein complex as well as to give a timely and rich account of its many functions. The exosome was discovered more than a decade ago by Phil Mitchell and David Tollervey by its ability to trim the 3’end of yeast, S. cerevisiae, 5. 8S rRNA. In a historic account they laid out the events surrounding this identification and the subsequent birth of the research field. In the chapter by Kurt Januszyk and Christopher Lima the structural organization of eukaryotic exosomes and their evolutionary counterparts in bacteria and archaea are discussed in large part through presentation of structures.

Ribonucleases. --- Ribosomes. --- RNA -- Metabolism. --- Ribonucleases --- RNA --- Ribosomes --- Metabolic Phenomena --- Biochemical Phenomena --- Nucleic Acids --- Exonucleases --- Chemical Phenomena --- Esterases --- Phenomena and Processes --- Nucleic Acids, Nucleotides, and Nucleosides --- Chemicals and Drugs --- Hydrolases --- Enzymes --- Enzymes and Coenzymes --- Exoribonucleases --- Metabolism --- RNA Stability --- Human Anatomy & Physiology --- Health & Biological Sciences --- Animal Biochemistry --- Metabolism. --- Ribonucleoprotein particles --- Ribonucleic acid metabolism --- RNases --- Medicine. --- Molecular biology. --- Biomedicine. --- Biomedicine general. --- Molecular Medicine. --- Molecular biochemistry --- Molecular biophysics --- Biochemistry --- Biophysics --- Biomolecules --- Systems biology --- Clinical sciences --- Medical profession --- Human biology --- Life sciences --- Medical sciences --- Pathology --- Physicians --- Cell organelles --- Microsomes --- Nucleoproteins --- Protoplasm --- Nucleases --- Health Workforce --- Biomedicine, general.