Tag: Abiotic Interactions

In stressful situations, such as high light and nutrient scarcity, the chloroplast may experience increased proteotoxicity due to a surge in damaging reactive oxygen species. In response, a signal is sent to the nucleus to increase production of many proteins, including proteases and chaperones to help…

A longstanding question in plant science is how plants “know” that they are under threat. The identification of cell-surface receptors that identify conserved pathogen patterns sheds some light on biotic stress perception, but what about abiotic stresses such as excessive heat or drought? Lamers…

Nuclear factor Y (NF-Y) proteins are heterotrimeric transcription factors made up of A, B and C subunits that exist in higher eukaryotes. Previous work has implicated NF-Ys in root growth. Recently, Zhou et al. isolated a root-specific NF-Y family transcription factor in Populus designated as PdNF-YB21.…

Jasmonate responses are regulated not only by the well-studied pair of the bioactive hormone jasmonoyl-isoleucine (JA-Ile) and the receptor COI1, but also the cyclopentenone OPDA and the JA-Ile precursor dn-OPDA can activate jasmonate signaling. However, the OPDA/dn-OPDA signaling and their physiological…

Hydrogen peroxide (H2O2) is an important signal involved in diverse stress responses both intracellularly and extracellularly, but until now it hasn’t been clear how the plant recognizes it. Wu et al. used a genetic screen to search for plants that fail to produce a calcium influx response in the presence…

For many years, the Arabidopsis transgenic allele ice1-1 was used to demonstrate the role of the transcription factor ICE1 in freezing and cold tolerance. This gene was first identified in a screening strategy using a luciferase reporter for DREB1A expression, another TF involved in downstream signaling.…

Many trees emit isoprene (C5H8, a small volatile carbon compound) during hot weather, and isoprenes have been shown to help trees tolerate short bursts of high temperatures (heat flecks). Isoprenes are not themselves harmful, but are reactive and can lead to the production of high levels of ground-level…

Plant Science Research Weekly: February 14 February 14, 2020/in Blog, WWR Full Post /by Mary Williams Review: Deep learning for plant genomics and crop improvement One of the goals of plant science is to use the molecular phenotype (genome, transcriptome, proteome) to predict the…