EXPANSIN A1-mediated radial swelling of pericycle cells positions anticlinal cell divisions during lateral root initiation ($) (PNAS)
Plant Science Research WeeklyLateral root development helps plants explore the soil for mineral nutrients and water, and there are environmental and internal cues that precede the formation of lateral root primordia. In Arabidopsis thaliana, some of these internal cues include increased auxin concentrations around lateral root founder…
How to pack chromatin in nuclear space? A plant-specific chromatin regulator associates with component of the nuclear periphery
Research, The Plant Cell, The Plant Cell: In a Nutshellhttps://doi.org/10.1105/tpc.18.00663
Mikulski et al. find that the PWO chromatin regulator interacts with a structural component of the nuclear periphery.
By Pawel Mikulski, Cell and Developmental Biology, John Innes Centre, Norwich, UK
Background: DNA is wrapped around histone proteins forming…
Acetylation in the Assembly of Cell-Wall Architecture
Research, The Plant Cell, The Plant Cell: In a NutshellZhang et al. discover a deacetylase from rice that highlights the importance regulating acetylation in the cell wall. Plant Cell https://doi.org/10.1105/tpc.18.00894
By Baocai Zhang and Yihua Zhou, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences
Background: Plant cells…
Review: Linking autophagy to abiotic and biotic stress responses (Trends Plant Sci)($)
Plant Science Research WeeklyAutophagy means “self-eating” in ancient Greek. It’s a process in which cellular components are delivered to lytic vacuoles to be reused. This recycling process promotes abiotic and biotic stress tolerance. In this review, Signorelli et al. highlight in detail plant autophagy in abiotic and biotic…
Ubiquitin-dependent chloroplast-associated protein degradation in plants (Science) ($)
Plant Science Research WeeklyThe fidelity of the chloroplast proteome is a major factor in the functional efficiency of photosynthesis. A RING-type ubiquitin E3 ligase, SP1, is an outer envelope localized protein in the chloroplast which ubiquitinates the protein import translocases (TOC proteins) and thus target them to 26S mediated…
An RNA splicing factor functions in plant seed development
Research, The Plant Cell, The Plant Cell: In a NutshellBai et al. show that an RNA splicing factor promotes normal cell differentiation and stops excessive cell proliferation in the corn kernel.
Plant Cell https://doi.org/10.1105/tpc.18.00754
By Fang Baia, Jacob Corllb, and A. Mark Settlesa
aHorticultural Sciences Department and Plant Molecular…
Cell type specific transcriptional reprogramming during Ustilago maydis and maize interaction (bioRxiv)
Plant Science Research Weekly
Ustilago maydis is a model biotrophic fungus which causes smut disesase in maize, characterized by tumorous symptoms on all aerial parts. Tumor formation in leaves of the host is a result of massive reprogramming by modulation of two processes, hypertrophy (cell expansion) and hyperplasia (cell division).…
Cuticle is found in the root! The root cap cuticle protects young roots from abiotic stress and helps lateral root outgrowth (Cell) ($)
Plant Science Research WeeklyTo adapt to life on land, plants developed lipid-derived modifications on the surface of aerial organs (shoot). The cuticle forms a multi-layered structure of lipid components at the outermost surface of the organ to protect plant cells from environment stresses. Roots, as the organ specialized for the…
Glycomic analysis of plant endomembrane vesicles (Plant Cell)
Plant Science Research WeeklyEndomembrane vesicles carry not only secreted proteins but also carbohydrates for cell wall synthesis, yet relatively less is know about this latter process. Wilkop et al. describe a method to investigate the glycan contents of specific subsets of vesicles, to begin to understand how these cargos are…