Improvement of chilling tolerance and accumulation of heat shock proteins in grape berries (Vitis vinifera cv. Jingxiu) by heat pretreatment

Reactive Oxygen Species (ROS) Scavenging in Hot Air Preconditioning Mediated Alleviation of Chilling Injury in Banana Fruits

“…When the discs were transferred to 20°C, leakage declined within 2 days, to the levels of the untreated controls. Heat treatments have been reported to reduce CI-induced ion leakage in tomato (Saltveit, 2001;2005), grape berries (Zhang et al, 2005). It is hypothesized that heat-shock treatments confer chilling tolerance by inducing the production of proteins that interact with and stabilize proteins and/or membranes (Saltveit, 2001).…”

“…Exposure of plant tissues to a moderate stress not only induces the resistance to this kind of severe stress, but can also improve tolerance to other stresses (Wang et al, 2003). This cross-protection following heat shock has been reported to result in tolerance to chilling stress in various fruits including grape fruits (Zhang et al, 2005), avocado (Woolf & Lay-Yee, 1997) and tomato (Lurie & Klein, 1991). High temperature preconditioning is also thought to induce reactive oxygen species (ROS), followed by the production of ROS scavengers such as superoxide dismutases (SOD), peroxidases (POD) and catalases (Holmberg & Bulow, 1998;Mittler et al, 2004).…”

Heat stress tolerance responses in developing tomato anthers

“…An analysis of Chenopodium album L. populations from contrasting thermal environments reveals lower heat shock protein levels and induced thermotolerance in plants growing at higher temperatures and interestingly an HSP accumulation that decreases with increasing fluctuations of the habitat temperatures (Barua et al, 2008). When compared to other sensitive genotype, a grape tolerant genotype showed higher heat shock gene expression levels under standard growth conditions (Zhang et al, 2005). We also found that basal gene expression levels in tomato anthers of a number of genes appeared significantly differentially expressed in the tolerant genotype compared to the sensitive genotype .…”

“…A comparative anther transcriptome analysis between tolerant and sensitive tomato genotypes shows that the metabolism and development-related genes are more highly expressed in the heat-sensitive genotypes, while gene modulation intensity suggests that the difference in tolerance to heat stress is associated with a lower percentage of transcripts affected in the heat-tolerant genotypes; however, HSP induction remains higher in the tolerant genotypes . Several tolerant grape genotypes show higher levels of HSP70 and genes related to metabolism and stress protection under elevated temperatures and one tolerant genotype showed higher heat shock gene expression levels even under standard conditions (Zhang et al, 2005a).…”

“…Heat tolerant rice anthers reveal a higher accumulation of small HSPs (sHSPs) in heat stress conditions . Similarly, several tolerant grape genotypes show higher levels of HSP70 and genes related to metabolism and stress protection under elevated temperatures (Zhang et al, 2005).…”