Entries by Linda Palmer

How a Cyst Nematode Alters Plant Host Gene Expression

Vijayapalani et al. find a sugar beet cyst nematode protein effector that epigenetically regulates plant rRNA gene dosage, which is a crucial requirement to promote cyst nematode parasitism. Plant Cell https://doi.org/10.1105/tpc.18.00570. Background: Cyst nematodes are plant-parasitic animals that pose serious obstacles to sustainable crop production. In contrast to the many migratory nematodes, these pathogens have […]

A Receptor-like Pseudokinase in Stomatal Closure

Sierla et al. show that GHR1 is a receptor-like pseudokinase that acts in stomatal closure through its scaffolding functions rather than by directly phosphorylating its target proteins. Plant Cell https://doi.org/10.1105/tpc.18.00441. By Maija Sierla Organismal and Evolutionary Biology Research Programme, University of Helsinki, Finland Background: Leaf surfaces contain small holes known as stomatal pores. These are […]

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 […]