News on cold priming: It´s controlled at the thylakoid membrane!

Short-term-cold-priming-is-locally-controlled-at-the-thylakoid-membrane-by-tAPX

Feb 28, 2019

Review: "Preparing plants for improved cold tolerance by priming" is published

Cold is a major stressor, which limits plant growth and development in many parts of the world, especially in the temperate climate zones. A large number of experimental studies has demonstrated that not only acclimation and entrainment but also the experience of single short stress events of various abiotic or biotic kinds (priming stress) can improve the tolerance of plants to chilling temperatures. This process, called priming, depends on a stress “memory”. It does not change cold sensitivity per se but beneficially modifies the response to cold and can last for days, months, or even longer. Elicitor factors and antagonists accumulate due to increased biosynthesis or decreased degradation either during or after the priming stimulus. Comparison of priming studies investigating improved tolerance to chilling temperatures highlighted key regulatory functions of ROS/RNS and antioxidant enzymes, plant hormones, especially jasmonates, salicylates, and abscisic acid, and signalling metabolites, such as β‐ and γ‐aminobutyric acid (BABA and GABA) and melatonin. We conclude that these elicitors and antagonists modify local and systemic cold tolerance by integration into cold‐induced signalling cascades.

Feb 28, 2019

RCD1 (radical incuded cell death 1) supports transcriptional activation of genes for chloroplast antioxidant enzymes

Apr 27, 2014

News in chloroplast-to-nucleus-signaling

Expression of SIG5 is under control of photoreceptors and signals originating at photosystem I

Apr 27, 2014