Entries by Linda Palmer

Opaque-2 Plays a Broad Role in Regulation of Endosperm Development and Function

Zhan et al. report on genome-wide analysis of genes regulated by the maize transcription factor Opaque-2. Plant Cell. https://doi.org/10.1105/tpc.18.00392 By Junpeng Zhan and Ramin Yadegari, University of Arizona Background: In flowering plants, development of seeds is initiated by double fertilization. During double fertilization, one of two sperm cells fuses with the egg cell (a female […]

Scaling Relationships between Ploidy and Size

Robinson et al. investigate scaling relationships between ploidy and size in Arabidopsis. The Plant Cell (2018). https://doi.org/10.1105/tpc.18.00344 By Dana O. Robinson and Adrienne H.K. Roeder Background: The term “ploidy” refers to the number of copies of the genome contained in a cell. Many eukaryotic cells (including plant and animal cells) are diploid (ploidy = 2), […]

Blue Light Helps Plants Build Rigid Walls

Zhang et al. investigate how Blue light enhances cell wall thickening https://doi.org/10.1105/tpc.18.00315. Background:  Plant vascular tissues provide plants with mechanical strength and long-distance transportation, and the thickened secondary cell walls of certain types of vascular cells help plants grow upright. Formation of the secondary cell wall is regulated by environmental and developmental signals. However, little […]

An Unconventional Route for Viral Replication Vesicle Trafficking

Garcia Cabanillas et al. show the existence of a tug-of-war for successful plant virus infection. The Plant Cell (2018). https://doi.org/10.1105/tpc.18.00281  By Daniel Garcia Cabanillas, Jun Jiang and Jean-François Laliberté  Background: Plants are susceptible to viruses, which cause severe physiological, morphological and growth defects in the infected host. Viruses remodel the intracellular architecture of the cells […]

Leaves Call to Roots: “Need More Zinc!”

Sinclair et al. show that a low Zn status of shoots triggers in roots the transcription of genes important in root-to-shoot translocation of Zn. The Plant Cell (2018). https://doi.org/10.1105/tpc.18.00207  By Scott A. Sinclair and Ute Krämer Department of Molecular Genetics and Physiology of Plants, Ruhr University Bochum  Background: When Zn availability in the soil is […]

Combinatorial Chemistry Solutions to Explore Intracellular Trafficking

Mishev, Lu, et al. discover a new chemical inhibitor of a protein family involved in the regulation of endomembrane transport. Mishev, Lu, et al. Plant Cell (2018) https://doi.org/10.1105/tpc.18.00145   By Kiril Mishev and Qing Lu Background: The structural and functional compartmentalization in eukaryotic cells allows the orchestration of highly coordinated cellular processes that rely on […]

A New Chemical (ES4) Affects Intracellular Trafficking in Plants

By Urszula Kania, Tomasz Nodzyński and Jiří Friml Background: Membrane proteins integrated into the lipid membranes of trafficking vesicles follow an elaborated road to arrive to their destination where they perform their tasks. Precise intracellular routing is especially critical and visible in case of PINs, the transporters for the plant hormone auxin that need to […]

Alternative Splicing Regulates Mineral Homeostasis

Dong et al. identify important regulators of mineral nutrition in rice. Plant Cell https://doi.org/10.1105/tpc.18.00051 By Luqing Zheng College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, P. R. China Background: Mineral nutrients are essential for plant growth and development. The proper uptake and use of minerals are maintained by various forms of regulation. Alternative […]

Receptor Kinases Control Anther Cell Differentiation

Cui et al. found new vital players in regulating anther development.  The Plant Cell (2018). https://doi.org/10.1105/tpc.17.00586 By Yanwei Cui and Xiaoping Gou Background: Anther is the male organ to produce pollen for pollination in angiosperms. The archesporial cells in early anther divide periclinally to generate the inner primary sporogenous cells and the outer primary parietal […]