Tag: Heat Stress

The heat shock response, a rapid transcriptional response to heat, was first observed nearly 60 years ago, and has long been a paradigm for understanding gene responses to exogenous cues. The family of genes encoding heat shock factors (HSFs) is greatly expanded in plants. These HSFs serve as key regulators…

A new article by Blagojevic, Baldrich, and Schiaffini et al. reveals that Arabidopsis ARGONAUTE1 (AGO1) protein, a pivotal agent in miRNA and siRNA-mediated gene silencing associated with the rough endoplasmic reticulum, dynamically localizes within stress granule components during heat stress (HS).…

Zhou et al. examine the fundamental functions of metacaspases in the unicellular green alga Chlamydomonas reinhardtii. https://doi.org/10.1093/plcell/koad289 By Yong Zou, Adrian N. Dauphinee, Simon Stael and Peter V. Bozhkov Department of Molecular Sciences, Uppsala BioCenter, Swedish University…

Plants have a remarkable ability to adapt to stress. For many stresses, plants respond to short-term mild exposure by becoming more tolerant to subsequent harsher stresses that would otherwise be lethal; this effect is known as priming. Priming occurs through several mechanisms that can include changes…

Kim et al. investigate the role of a heat shock protein in thermotolerance. https://doi.org/10.1093/plcell/koac351 By Minsoo Kim and Elizabeth Vierling at UMass Amherst Background: Plants can survive heat stress by producing heat shock proteins (HSPs) that protect and rescue other proteins.…

Like all organisms, plants respond to changes in temperature by activating pathways that enable them to stay alive in spite of rising or lowering temperatures. Interestingly though, there is no universal temperature sensing mechanism across the domains of life. Changes in membrane fluidity (think of…

Heat stress is a common consequence of global warming for terrestrial plants, and it can have devastating effects on growth and yield. In terms of fruit ripening, high temperature is one of the most significant abiotic stresses inhibiting quality formation. During fruit ripening, chlorophyll breaks down…

Jo et al. uncover the role of a spliceosome component in removing retained introns in Arabidopsis in response to heat stress https://doi.org/10.1093/plcell/koac084  Background: Alternative splicing plays a key role in abiotic stress responses in plants, especially responses to heat stress. The spliceosome…