Ethylene signaling modulates cortical microtubule reassembly in response to salt stress
Plant Science Research WeeklyEthylene is an important mediator during plant adaptation to salt stress. During salt stress, ethylene has been shown to promote microtubule (MT) stability and organization. Dou et al. further examine this pathway using Ag+ to block ethylene signaling in addition to using various mutants. In wildtype…
Ribosome Production Under Surveillance
Research, The Plant Cell, The Plant Cell: In a NutshellMaekawa et al. find a ribosome production monitoring system in Arabidopsis thaliana Plant Cell (2017) https://doi.org/10.1105/tpc.17.00778
By Shugo Maekawa, Tetsuya Ishida, Shuichi Yanagisawa
Background: Protein is produced by ribosomes consisting of a number of proteins and several RNAs (ribosomal…
Structure of KDM5 Gives Insight to Histone Demethylation
Research, The Plant Cell, The Plant Cell: In a NutshellYang et al. reveal a conserved H3K4me3 recognition mechanism shared by both plant and animal KDM5 histone demethylases. The Plant Cell (2017). https://doi.org/10.1105/tpc.17.00666
By Z. Yang, Q. Qiu, X. Cao and J. Du
Background: Histone methylation is a conserved gene regulation mechanism in plants…
Recruiter of Chromatin Regulators
Research, The Plant Cell, The Plant Cell: In a NutshellHohenstatt et al. describe a new recruiter of PcG chromatin regulators affecting flowering and meristem identity in Arabidopsis. https://doi.org/10.1105/tpc.17.00117
By Pawel Mikulski
1) BACKGROUND: Polycomb group (PcG) proteins are key regulatory proteins involved in maintaining the ability (and…
Control of retrograde signaling by rapid turnover of GENOMES UNCOUPLED 1 (Plant Physiol.)
Plant Science Research Weekly, Research, Research BlogCommunication between chloroplast and the nucleus is crucial to accomodate changes in the environment as well as regulate development of the chloroplast itself. Five GENOMES UNCOUPLED (GUN2 to -6) genes were previously described to regulate plastid-to-nucleus communication by affecting the synthesis…
Cell Cycle Regulation by Chlamydomonas Cyclin-Dependent Protein Kinases
Blog, Research, The Plant Cell, The Plant Cell: In BriefCyclins and cyclin-dependent protein kinases (CDKs) are critical regulators of cell cycle progression. Although CDK1 is essential for mitosis in animals and fungi, CDKA, the plant and algal ortholog of CDK1, is not essential for cell division in Arabidopsis (Nowack et al., 2012). By contrast, CDKB is…
Auxin and ROP GTPase signaling of polar nuclear migration in root epidermal hair cells (Plant Physiology)
Blog, Plant Science Research Weekly, Research, Research BlogThe nucleus is a dynamic organelle whose positioning and movement is highly coordinated throughout plant development and differs between cell types. Upon the initiation and subsequent elongation of root hairs, the nucleus moves from a central position to the tip of the growing root hair. Nakamura et…
Cytokinin regulation in the endoplasmic reticulum (Plant Physiology)
Blog, Plant Science Research Weekly, ResearchCytokinin is a phytohormone involved in many plant processes such as cell proliferation, apical dominance, leaf senescence, tissue patterning, organ initiation, environmental responses… To allow for effective control of all these processes, cytokinin concentrations need to be continuously adjusted.…
Update: Monitoring Polysaccharide Dynamics in the Plant Cell Wall
Blog, Plant Physiology, Plant Physiology: UpdatesBy Catalin Voiniciuc, Markus Pauly, and Björn Usadel
All plant cells are surrounded by complex walls that play a role in growth and differentiation of tissues. Walls provide mechanical integrity and structure to each cell, and represent an interface with neighboring cells and the environment (Somerville…