Entries by Linda Palmer

The Innovation Potential of Ancient Whole Genome Duplication

Zhang et al. find that ancient genome triplication at the origin of core eudicots generated many new regulatory protein complexes, innovating plant development. Plant Cell https://doi.org/10.1105/tpc.18.00409   By Koen Geuten and Heleen Coenen Background:  The complete DNA (the genome) of many plants is sometimes duplicated or even triplicated. While whole-genome duplication often leads to an […]

Understanding the Ontogeny of Plant Innate Immunity during Seedling Development

Zou et al. reveal the underlying mechanism that regulates the ontogeny of plant innate immunity. Plant Cell https://doi.org/10.1105/tpc.18.00297. By Yanmin Zou and Dongping Lu  Background: Plants and animals largely rely on innate immunity to protect themselves from pathogen infections. Recognition of pathogen-associated molecular patterns (PAMPs) by plant pattern recognition receptors (PRRs) initiates PAMP-triggered immunity in […]

New Factor in Arabidopsis 18S rRNA Maturation

Ponce et al. investigate the function of RRP7 protein in ribosome biogenesis. Plant Cell https://doi.org/10.1105/tpc.18.00245  By Rosa Micol-Ponce and María Rosa Ponce Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, 03202 Elche, Alicante, Spain.  Background: The ancient, universal molecular machine for protein synthesis is the ribosome, which is composed of ribosomal proteins (RPs) and […]

97 Shades of Gray: Genetic interactions of the gray mold, Botrytis cinerea, with wild and domesticated tomato

Although a vineyard full of decaying grapes infected with noble rot is a blessing for sweet wine producers, the causal agent, Botrytis cinerea (gray mold), causes huge crop losses. Unlike most plant pathogens, individual isolates of the necrotrophic fungus can infect an extremely broad range of plants, including cereals, fruits, vegetables, and ornamentals. Host immune […]

Master MYCs: MYC2, the jasmonate signaling ‘master switch’

To optimize their fitness in the field, plants need to respond rapidly, specifically and dynamically to an ever-changing and often hostile environment. By integrating external environmental cues with endogenous developmental programs, phytohormones play a critical role in the cross-talk between signal transduction networks. Juxtaposed between the plant defense and development pathways is the oxylipin signaling […]

A Root Endoploidy Map: The Spatial and Temporal Arrangement of Dividing and Endocycling Cells

Bhosale et al. computationally predicted and experimentally verified the DNA ploidy level of all cells in the Arabidopsis root tip, revealing that endoreplication is spatiotemporally regulated, stress-responsive, and likely important to coordinate cell expansion with changes in cell wall structure. Plant Cell https://doi.org/10.1105/tpc.17.00983 By Rahul Bhosale, Steven Maere and Lieven De Veylder Background: Every new […]

OsELF3 Rhythmicity Affects Flowering under Long-day Conditions

OsELF3 Rhythmicity Affects Flowering under Long-day Conditions Zhu et al. identify OsELF3 ubiquitination and degradation by HAF1 in rice. The Plant Cell (2018). https://doi.org/10.1105/tpc.18.00653 By Changyin Wu Background: The photoperiodic response is one of the most important factors determining heading date in rice. Ubiquitin-mediated protein degradation is essential for rhythmicity of flowering regulators. HAF1, a […]

Ironing Out the Wrinkles in Fatty Acid Synthesis

Zhai et al. show that Trehalose 6-phosphate positively regulates fatty acid synthesis by stabilizing WRINKLED1. Plant Cell. https://doi.org/10.1105/tpc.18.00521 Background: In plants, oil synthesis is under the control of an “on switch” or transcription factor called WRINKLED1, that binds to DNA in the regulatory regions attached to approximately 20 genes that code for enzymes involved in […]

A Multi-Player Club for Maize Storage Protein Regulation

Li et al. take a new approach to identify a transcription factor that regulates γ-zein gene expression during maize endosperm development together with other transcription factors. By Chaobin Li and Rentao Song, China Agricultural University Background: Zeins are the most abundant storage proteins in maize seed, and as such, they affect its nutritional quality and […]