Molecular mechanisms of the plant heat stress response

Qu, Aili; Ding, Yanfei; Jiang, Qiong; C, Zhu

doi:10.1016/j.bbrc.2013.01.104

Cited by 336 publications

(225 citation statements)

References 59 publications

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“…When subjected to nonoptimal temperatures, plant cells preferentially upregulate the expression of specific proteins called HSPs that function as molecular chaperones. The HSPs help to protect cells against the deleterious effects of stress (Miller and Stillman, 2012;Qu et al, 2013). It has been reported that plants such as potato, arabidopsis, and rice begin to synthesize HSPs if they are exposed to heat stress (Savic et al, 2012;Zhong et al, 2013;Chen et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Effects of high temperature stress on enzymatic and nonenzymaticantioxidants and proteins in strawberry plants

Ergin¹,

Gülen²,

Kesici³

et al. 2016

Turk J Agric For

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The mechanism of tolerance to high temperatures was investigated in two strawberry (Fragaria × ananassa Duch) cultivars, 'Redlands Hope' ('R. Hope' , heat tolerant) and 'Cal. Giant 3' ('CG3' , heat sensitive). Leaves were collected from plants that were exposed to gradual heat stress and heat-shock stress separately. The contents of nonenzymatic antioxidants such as ascorbic acid (AsA) and glutathione (GSH) and the activities of enzymatic antioxidants such as ascorbate peroxidase (APX) (EC 1.11.1.11), catalase (CAT) (EC 1.11.1.6), and glutathione reductase (GR) (EC. 1.6.4.2) were measured followed by heat treatments. Additionally, proline content was determined, and heat shock proteins (HSPs) were analyzed with an immunoblotting method to investigate protein markers involved in the heat-stress tolerance of strawberry plants. The contents of AsA and GSH did not change depending on heat stress type, temperatures, or cultivars. While APX and CAT activities increased with high temperatures, GR activity was almost unchanged. The proline content of the cultivars increased in both treatments. Anti-HSP60 immunoblots revealed that a 23 kDa polypeptide was detected during the heat acclimation of strawberry cultivars. The intensity of the heat shock protein in 'R. Hope' plants was more than in 'CG3' plants. Thus, the accumulation of 23 kDa heat shock protein was correlated with the heat tolerance of the cultivars. In conclusion, strawberry leaf tissues of 'R. Hope' were found to enhance the structural stability of cellular membranes under high temperature by increasing both the activity of such enzymes as CAT and APX to activate the antioxidative systems and the expression of 23 kDa HSP.

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Section: Discussionmentioning

confidence: 99%

Effects of high temperature stress on enzymatic and nonenzymaticantioxidants and proteins in strawberry plants

Ergin¹,

Gülen²,

Kesici³

et al. 2016

Turk J Agric For

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“…RBOHD-derived ROS triggers the ROS/redox signaling system, which in turn activates MBF1c and HSFs. The most-characterized part of the network contains heat stress transcription factors (HSFs) that regulate genes encoding heat stress proteins (HSPs), which act as molecular chaperones and repair damaged proteins ( left ) (Mittler et al 2012 ;Qu et al 2013 ;Sung et al 2003 ) The heat-induced infl ux of Ca 2 can trigger multiple signaling pathways in plants (Larkindale and Knight 2002 ;Saidi et al 2009 ). Under high temperatures, the cytosolic Ca 2 is sharply increased, which ultimately leads to protein phosphorylation and activation of various heat stress transcriptional factors (Saidi et al 2011 ).…”

Section: Heat Stress Signalingmentioning

confidence: 98%

Molecular Physiology of Heat Stress Responses in Plants

Hemmati

Gupta

Basu

2015

Elucidation of Abiotic Stress Signaling in Plants

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Heat stress is one of the major abiotic stresses that plants encounter. Heat stress causes billions of dollars in losses of agricultural crops worldwide. Here, we summarize the molecular and whole genome responses due to heat stress in plants. It has been reported that there are cascades of biochemical reactions that lead to heat stress. In most cases, heat stress is coupled with drought stress response. With the advancements in genomic tools, we have more information on genes, which are upor down-regulated in plants due to heat stress. The heat-stressed plants may exhibit various physiological responses, including stomatal closure, suppressed photosynthesis, stunted growth, etc. Microarray and transcriptome sequencing gave us the tools to perform genome-wide expression profi ling in heat-stressed plants. Understanding how gene expression in heat-stressed plants works will help us to discover novel heat stress-tolerant genes. These genes could be overexpressed in crop plants to make transgenic heat-tolerant agricultural crops. Climate change and global warming are major concerns for us and production of thermotolerant plants could address the issue of global crop loss due to heat and drought stresses.

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“…Abiotic stress develops a cascade of molecular responses in plants (Qu et al 2013 ). Few mechanisms of defence such as gene expression which are not expressed under 'normal' conditions are triggered as a result of high temperature as well as other stresses (Morimoto 1993 ;Feder 2006 ).…”

Section: Protein Stabilitymentioning

confidence: 99%