Entries by Linda Palmer

Roots Calling Leaves: Oxylipins in Induced Systemic Resistance

February 7, 2020 in , , /by

Wang et al. identify signals related to induced systemic resistance produced by a root-colonizing fungus. Plant Cell https://doi.org/10.1105/tpc.19.00487 Background: Trichoderma virens is an agriculturally-relevant root-colonizing fungus that provides its plant hosts many benefits, such as increased growth, destruction of soil-borne pathogens, and enhanced systemic resistance against foliar pathogens, termed induced systemic resistance (ISR). The mobile ISR signals […]

Endosymbiotic Pseudomonas stutzeri within Rhodotorula mucilaginosa JGTA-S1

February 6, 2020 in , , /by

Paul, Saha, et.al investigated the Improvement of nitrogen nutrition in rice by interaction with the basidiomycete Rhodotorula mucilaginosa and its N2-fixing endobacteria. Plant Cell https://doi.org/10.1105/tpc.19.00385 By Karnelia Paul1, Chinmay Saha1,2,3 and Anindita Seal1 1Department of Biotechnology and Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata […]

A Feedforward Transcriptional Loop in Leaf Senescence

February 5, 2020 in , , /by

Zhuo et al. show the existence of jasmonate-activated MYC2-Dof2.1-MYC2 transcriptional loop that is involved in the promotion of leaf senescence in Arabidopsis. Plant Cell https://doi.org/10.1105/tpc.19.00297  By M. Zhuo, Y. Sakuraba, and S. Yanagisawa, The University of Tokyo, Japan Background: Dof (DNA-binding with one finger) proteins are plant-specific transcription factors associated with a variety of physiological […]

The photosystem factory in chloroplasts

February 4, 2020 in , , /by

Sun et al. reveal the subcellular organization of photosystem biogenesis in Chlamydomonas. Plant Cell https://doi.org/10.1105/tpc.19.00263 by Melissa Valente-Paterno, Yi Sun and William Zerges. Department of Biology, Concordia University.  Background: Cells localize intracellular processes to subcellular organelles in order to enhance their efficiency. For example, in plant and algal cells, chloroplasts carry out photosynthesis. Within chloroplasts, […]

Enhanced Metabolic Degradation: The Last Evolved Glyphosate Resistance Mechanism of Weeds?

January 28, 2020 in , , /by

For the past two decades, glyphosate has been the most used herbicide worldwide, resulting in prolonged, extreme selection pressure for glyphosate-resistant (GR) weeds.  Glyphosate’s only target as a herbicide is 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), an enzyme of the shikimate pathway.  It forms a stabile dead-end complex by binding EPSP to form a transition-state analogue that is […]

Differential modulation of the pathogen transcriptome by distinct hosts

January 28, 2020 in , , /by

Baetsen-Young  et al. identified key transcriptomic differences in coexpression networks following Fusarium virguliforme infection of symptomatic (soybean) vs. asymptomatic (corn) hosts    Plant Cell https://doi.org/10.1105/tpc.19.00697 By Amy Baetsen-Young and Brad Day, Michigan State University Background: Fungal plant pathogens elicit an array of symptoms during host colonization, and in total, these include changes in host plant development, […]

Salicylic Acid in Hook Development: Communication with Ethylene

January 27, 2020 in , , /by

Huang  et al. found that SA inhibits hook formation and is dependent on the ET pathway in Arabidopsis. Plant Cell https://doi.org/10.1105/tpc. 19.00658 By Peixin Huang, Yichuan Wang, and Hongwei Guo Background: For germnating seedlings to survive and become a mature plant, they must push through the overlaid soil to reach the light. During this process, […]

Energy vs growth: Plant nutritional decisions are made by TOR

January 17, 2020 in , , /by

O’Leary et al. show that the TOR signalling pathway in plants responds to amino acid levels by eliciting regulatory effects on respiratory energy metabolism at night, uniting a hallmark mechanism of TOR regulation across eukaryotes. Plant Cell https://doi.org/10.1105/tpc.19.00157 By Brendan O’Leary and Harvey Millar Background: Plant leaves have two main energy-generating metabolic systems, photosynthesis and […]

Taking Down Plant Communication Channels to Invade

January 15, 2020 in , , /by

Aung et al. reveal that pathogenic bacteria target plant plasmodesmata to colonize and invade surrounding tissues. Plant Cell https://doi.org/10.1105/tpc.19.00707 By Kyaw Aung and Sheng Yang He   Background: Multicellular organisms like animals and plants host a multitude of microorganisms. Although most microbes are beneficial or harmless to their hosts, infections caused by pathogenic microorganisms can […]