Acquired tolerance to temperature extremes

Sung, Dong-Yul; Kaplan, Fatma; Lee, Kil-Jae; Guy, Charles L.

doi:10.1016/s1360-1385(03)00047-5

Cited by 511 publications

(350 citation statements)

References 100 publications

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“…For example, fertilization in mammals is navigated by the temperature gradient (Bahat et al, 2003); an increase in neuronal activity associated with temperature elevations has been observed in the hippocampus (Andersen and Moser, 1995); sex in reptiles is determined by the absolute temperature (Warner and Shine, 2008); and plants react to temperature stresses to maximize growth and developmental processes (Sung et al, 2003). It has recently been clarified that ambient thermoreceptors are expressed as a family of channels in the specific regions in the brain (Hamada et al, 2008), sensory nerve endings, and skin (Dhaka et al, 2006).…”

Section: Intracellular Camentioning

confidence: 99%

Highly thermosensitive Ca²⁺dynamics in a HeLa cell through IP₃receptors

et al. 2009

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Section: Intracellular Camentioning

confidence: 99%

Highly thermosensitive Ca²⁺dynamics in a HeLa cell through IP₃receptors

et al. 2009

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“…ROS including singlet oxygen ( 1 O 2 ), superoxide radical (O 2 -), hydrogen peroxide (H 2 O 2 ), and hydroxyl radical (HO -) are unavoidable byproducts of various metabolic pathways in plants (Noctor et al 2014). ROS formation is induced by a wide range of environmental stresses including chilling (Jung 2004), temperature stress (Sung et al 2003), oxygen shortage (Blokhina et al 2003), salinity (Khan and Panda 2008), and drought (Bian and Jiang 2009). The generation of ROS in water deficit condition results from photosynthetic apparatus, photorespiration and respiration (Wang et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Responses of pomegranate cultivars to severe water stress and recovery: changes on antioxidant enzyme activities, gene expression patterns and water stress responsive metabolites

Pourghayoumi

Rahemi

Bakhshi

et al. 2017

Physiol Mol Biol Plants

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The biochemical and molecular responses of five commercially well-known pomegranate cultivars to severe water stress were studied. The cultivars were subjected to 14-day water stress by withholding irrigation, followed by re-watering for 7 days. Results showed clear differences in metabolites contents and activities of antioxidant enzymes among various pomegranate cultivars during severe water stress and recovery. According to our results, increased accumulation of proline in pomegranate was not related to osmotic adjustment during severe water stress. Except for 'Ghojagh', leaves grown under severe water stress conditions showed symptoms of oxidative stress such as reduced chlorophyll concentration. The improved performance of 'Ghojagh' under drought stress may be associated with an efficient osmotic adjustment. The up-or down regulated expression of cytosolic glutathione reductase (cytosolic GR) and glutathione peroxidase were observed under drought conditions. Moreover, the suppressed expression of cytosolic GR was also noted. Comparatively, 'Rabab' exhibited higher antioxidant capacity and an efficient ROSscavenging mechanism under drought stress. Lower levels of membrane lipid peroxidation in 'Ghojagh' and 'Rabab' under drought stress and the marked reduction of malondialdehyde concentration after re-watering represents that these cultivars have a good tolerance to drought stress. As a first step towards the study of the biochemical and molecular responses of pomegranate plants to water stress, this research provides new information into the mechanisms of drought tolerance in the plants.

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“…At cellular and sub-cellular levels, heat stress can cause several alterations, which depend upon the growth stage, intensity and duration of heat stress (Sung et al 2003). Heat stress can directly result in denaturation of proteins and enzymes (Kepova et al 2005), membrane damage (Liu and Huang 2000) and can indirectly result in inactivation of enzymes located in the mitochondria and chloroplasts, reduction in protein synthesis and disruption of their membranes (Howarth 2005).…”

Section: Introductionmentioning

confidence: 99%

Proline induces heat tolerance in chickpea (Cicer arietinum L.) plants by protecting vital enzymes of carbon and antioxidative metabolism

Kaushal

Gupta

Bhandhari

et al. 2011

Physiol Mol Biol Plants

160

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Chickpea is a heat sensitive crop hence its potential yield is considerably reduced under high temperatures exceeding 35°C. In the present study, we evaluated the efficacy of proline in countering the damage caused by heat stress to growth and to enzymes of carbon and antioxidative metabolism in chickpea. The chickpea seeds were raised without (control) and with proline (10 μM) at temperatures of 30/25°C, 35/30°C, 40/35°C and 45/40°C as day/ night (12 h/12 h) in a growth chamber. The shoot and root length at 40/35°C decreased by 46 and 37 %, respectively over control while at 45/40°C, a decrease of 63 and 47 %, respectively over control was observed. In the plants growing in the presence of 10 μM proline at 40/35°C and 45/40°C, the shoot length showed improvement of 32 and 53 %, respectively over untreated plants, while the root growth was improved by 22 and 26 %, respectively. The stress injury (as membrane damage) increased with elevation of temperatures while cellular respiration, chlorophyll content and relative leaf water content reduced as the temperature increased to 45/40°C. The endogenous proline was elevated to 46 μmol g −1 dw at 40/35°C but declined to 19 μmol g −1 dw in plants growing at 45/40°C that was associated with considerable inhibition of growth at this temperature. The oxidative damage measured as malondialdehyde and hydrogen peroxide content increased manifolds in heat stressed plants coupled with inhibition in the activities of enzymatic (superoxide dismutase, catalase, ascorbate peroxidase, glutathione reductase) and levels of non-enzymatic (ascorbic acid, glutathione, proline) antioxidants. The enzymes associated with carbon fixation (RUBISCO), sucrose synthesis (sucrose phosphate synthase) and sucrose hydrolysis (invertase) were strongly inhibited at 45/40°C. The plants growing in the presence of proline accumulated proline up to 63 μmol g −1 dw and showed less injury to membranes, had improved content of chlorophyll and water, especially at 45/40°C. Additionally, the oxidative injury was significantly reduced coupled with elevated levels of enzymatic and non-enzymatic antioxidants. A significant improvement was also noticed in the activities of enzymes of carbon metabolism in proline-treated plants. We report here that proline imparts partial heat tolerance to chickpea's growth by reducing the cellular injury and protection of some vital enzymes related to carbon and oxidative metabolism and exogenous application of proline appears to have a countering effect against elevated high temperatures on chickpea.

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Acquired tolerance to temperature extremes

Cited by 511 publications

References 100 publications

Highly thermosensitive Ca²⁺dynamics in a HeLa cell through IP₃receptors

Highly thermosensitive Ca²⁺dynamics in a HeLa cell through IP₃receptors

Responses of pomegranate cultivars to severe water stress and recovery: changes on antioxidant enzyme activities, gene expression patterns and water stress responsive metabolites

Proline induces heat tolerance in chickpea (Cicer arietinum L.) plants by protecting vital enzymes of carbon and antioxidative metabolism

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Acquired tolerance to temperature extremes

Cited by 511 publications

References 100 publications

Highly thermosensitive Ca2+dynamics in a HeLa cell through IP3receptors

Highly thermosensitive Ca2+dynamics in a HeLa cell through IP3receptors

Responses of pomegranate cultivars to severe water stress and recovery: changes on antioxidant enzyme activities, gene expression patterns and water stress responsive metabolites

Proline induces heat tolerance in chickpea (Cicer arietinum L.) plants by protecting vital enzymes of carbon and antioxidative metabolism

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Product

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Highly thermosensitive Ca²⁺dynamics in a HeLa cell through IP₃receptors

Highly thermosensitive Ca²⁺dynamics in a HeLa cell through IP₃receptors