Entries by Linda Palmer

Side Chains Influence Pectin Properties

Šola et al. examine how galactose alters rhamnogalacturonan-I properties. Plant Cell https://doi.org/10.1105/tpc.18.000954 By Krešimir Šola and George W. Haughn Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada Background: Pectin is a component of the plant cell wall that has many important roles, such as support, the regulation of cell growth and […]

Balancing photosystem activities: different mechanisms in plants and cyanobacteria

Calzadilla et al. investigate the mechanism underlying state transitions in cyanobacteria. Plant Cell https://doi.org/10.1105/tpc.18.00159 By Pablo I. Calzadilla and Diana Kirilovsky, Institute for Integrative Biology of the Cell, CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif sur Yvette, France Background: Plants, algae, and cyanobacteria harvest solar energy and convert it into chemical energy through photosynthesis. The […]

Making Seeds Sleep at the Proper Time

Li et al. identify a module regulating seed dormancy in Arabidopsis. Plant Cell (2019). https://doi.org/10.1105/tpc.18.00449 By Xiaoying Li Background: Grain crop production is important for human survival. Pre-harvest sprouting is a worldwide natural disaster that seriously affects crop yields and quality. Proper seed dormancy could prevent pre-harvest sprouting. However, long dormancy periods can have adverse […]

A peek at the polysaccharides contained inside specific plant vesicles

In a pioneering study, Wilkop et al. characterized the type of polysaccharide cargo transported in specific plant vesicles. Plant Cell (2019) https://doi.org/10.1105/tpc.18.00854.      By Destiny Davis, Thomas Wilkop, Michael  Hahn, and Georgia Drakakaki, University of California, Davis  Background: Inside the plant cell, the endomembrane system, with its complex network of pathways, transports polysaccharides and […]

Identifying an Unexpected Player in DNA Methylation

Choudry et al. show that the mRNA export protein ALY1 enables genome-wide RNA-directed DNA methylation, transposon repression and transgene silencing though the efficient export of the AGO6 mRNA. Plant Cell https://doi.org/10.1105/tpc.18.00624 By Sarah Choudury Background: Transposons, sometimes called “jumping genes,” are mobile genetic elements that make up large portions of plant and animal genomes. When […]

A revised model for purine nucleotide catabolism

Baccolini and Witte present a revised model for nucleotide catabolism in Arabidopsis. Plant Cell https://doi.org/10.1105/tpc.18.00899 Chiara Baccolini, Leibniz Universität Hannover Prof. Dr. Claus-Peter Witte, Leibniz Universität Hannover Background: Nitrogen is a key element for plant growth and is constantly recycled in plant metabolism, for example, by the breakdown of the nitrogen-containing bases in nucleic acids. […]

An RNA splicing factor functions in plant seed development

Bai 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 and Cellular Biology Program, University of Florida, Gainesville, Florida, 32611, USA bDepartment of Biological […]

Pseudogenes in Plants: Their Associations with Long Noncoding RNAs and MicroRNAs

Xie et al. applied a multifaceted approach to study plant pseudogenes, combining RNA-seq, comparative genomics, and molecular biology. They conclude that rapid rewiring of psuedogene transcriptional regulatory regions is a major mechanism driving the origin of novel regulatory modules. Plant Cell https://doi.org/10.1105/tpc.18.00601 Background: Genomes contain a range of elements including not only genes, but also […]

Transcription factors regulate wood formation

Chen et al. construct a transcriptional regulatory network governing wood formation. Plant Cell http://doi.org/10.1105/tpc.18.00620   By Hao Chen, Department of Plant and Microbial Biology, North Carolina State University Jack Wang, Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University Vincent L. Chiang, Forest Biotechnology Group, Department of Forestry and Environmental Resources, […]