Enhanced expression of heat-shock proteins in thermo-tolerant lines of sunflower and their progenies selected on the basis of temperature-induction response

Kumar, Ganesh; Krishnaprasad, B. T.; Savitha, M.S.; Ramaswamy, Gopalakrishna; Mukhopadhyay, K.; Ramamohan, G.; Udayakumar, M.

doi:10.1007/s001220051245

Cited by 44 publications

(37 citation statements)

References 11 publications

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“…The thermotolerant genotypes selected based on TIR technique at the seedling level are intrinsically tolerant at the plant level (Kumar et al, 1999;Senthil kumar et al, 2004;Srikanthbabu et al, 2002). In this method the early stages of the crop growth is subjected to gradual increase in the temperature and screening for survival at a challenging lethal temperature.…”

Section: Resultsmentioning

confidence: 99%

“…The induction temperature was standardized as 36 to 46°C at the rate of increase 2°C per hour.The reports suggest that genetic variability cannot be visualized when the plants are directly exposed to severe stress but only upon acclimation to prior severe stress (Fender and O' Cornell, 1990). The observed higher recovery growth of induced seedlings is mainly because of altered metabolism in response to acclimation as seen in sunflower (Kumar et al, 1999;Senthil Kumar et al, 2006), in sorghum (Howarthand skot, 1994), in beans (Keeler et al, 2000), in wheat (Burke, 1994(Burke, , 1998, and in groundnut (Srikanthbabu et al, 2002). …”

Section: Standardization Of Optimum Challenging and Induction Temperamentioning

confidence: 99%

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Temperature induction response and accumulation of starch granules as indices to identify the thermotolerance of pulses at early growth stages

Partheeban

Vijayaraghavan

Sowmyapriya

et al. 2017

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In pulses, high temperature is a major limiting factor for yield decline. Tamil Nadu has a rich pulse germplasm with high genetic variability. Hence, the present study was designed to develop a technique to screen genotypes for high temperature tolerance. A rapid screening protocol was developed based on the principle of "acquired tolerance". Adapting this temperature induction response (TIR) technique to pulses, popular varieties of TNAU pulses of blackgram (VBG-07-001, VBG-08-003), redgram (CO-6, VBN-2) and soybean (CO-1, CO-2) were screened for thermotolerance. The challenging lethal temperature was standardized as 50°C for 3 hours at which 90 per cent of the seedling mortality occured. The induction temperature was standardized as 36°C to 40°C at which 48.3 per cent of growth reduction over control was noticed. Blackgram showed higher thermotolerance than other pulses in terms of survival percentage and seedling growth. Blackgram seeds showing contrasting behaviour to temperature stress tolerance namely VBG-07-001(tolerant) and VBG-08-003 (susceptible) were analysed for the accumulation and distribution of starch granules responsible for the grain filling under heat stress.

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Section: Resultsmentioning

confidence: 99%

Section: Standardization Of Optimum Challenging and Induction Temperamentioning

confidence: 99%

Temperature induction response and accumulation of starch granules as indices to identify the thermotolerance of pulses at early growth stages

Partheeban

Vijayaraghavan

Sowmyapriya

et al. 2017

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“…The thermotolerant lines from the sunflower were identified in open pollinated population, cv. Morden (Kumar et al, 1999). This is first study, TIR was demonstrated in soybean.…”

Section: Genetic Variability For Intrinsic Thermotolerance Among Soybmentioning

confidence: 93%

“…Based on this concept, the temperature induction response (TIR) technique has been developed (Kumar et al, 1999) and its relevance was recently validated in rice (Sapna harihar et al, 2014). In this technique, the seedlings are initially exposed to a non-lethal induction stress to facilitate expression of stress responsive genes subsequently followed by lethal temperature.…”

Section: Introductionmentioning

confidence: 99%

Temperature induction response reveals intrinsic thermotolerant genotypes in soybean

Ange

Srividhya

Vijayalakshmi

et al. 2016

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The responses of soybean genotypes to high temperature for intrinsic tolerance was studied using Temperature Induction Response (TIR) technique in order identify the genotypes tolerant to high temperature stress. Seven soybean genotypes subjected to lethal and sub lethal temperatures showed significant variation for acquired thermotolerance. Thermotolerant genotypes ADT 1 and CoSoy1 identified by the TIR technique, demonstrated higher survival percentage, and lower growth reduction. Further the tolerant genotypes identified based on TIR also showed higher antioxidant enzymes activity implying the critical role of antioxidant in cellular thermotolerance. This clearly demonstrated that TIR can be effectively used for screening high temperature tolerance genotypes in soybean. This study also established the fact that the alternations in antioxidants during induction are vital for imparting tolerance to high temperature stress.

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“…Heat stress induces the expression of specific heat shock genes, which lead to the synthesis of a new set of so-called HSPs. These proteins are synthesized from newly transcribed mRNAs within 5 minutes of exposure to heat stress (Kumar et al 1999). HSPs may prevent accumulation of aberrant proteins induced as a consequence of high temperature stress.…”

Section: Mechanisms Of Heat Stress Tolerancementioning

confidence: 99%

Genetic Adjustment to Changing Climates: Vegetables

Peña¹,

Ebert²,

Gniffke³

et al. 2011

Crop Adaptation to Climate Change

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Enhanced expression of heat-shock proteins in thermo-tolerant lines of sunflower and their progenies selected on the basis of temperature-induction response

Cited by 44 publications

References 11 publications

Temperature induction response and accumulation of starch granules as indices to identify the thermotolerance of pulses at early growth stages

Temperature induction response and accumulation of starch granules as indices to identify the thermotolerance of pulses at early growth stages

Temperature induction response reveals intrinsic thermotolerant genotypes in soybean

Genetic Adjustment to Changing Climates: Vegetables

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