Ultrastructure and biochemical traits of bread and durum wheat grains under heat stress

Dias, Ana; Bagulho, Ana Sofia; Lidon, Fernando C.

doi:10.1590/s1677-04202008000400008

Cited by 61 publications

(56 citation statements)

References 29 publications

(32 reference statements)

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“…These growth conditions prompted characteristic effects of moderate high temperatures (25/32 ºC) after anthesis (Wardlaw et al, 1980; and specific behaviors (Blumenthal et al 1991a, b;Randall and Moss, 1990;Stone and Nicolas, 1994;1995) associated to heat shocks (> 32 ºC). Accordingly, as found in previous studies by our research group, after anthesis Triticum aestivum L. genotype Sever displayed an higher tolerance to heat stress than the genotype Golia (Maçãs et al, 1999;, Dias et al, 2008 and Triticum turgidum subsp. durum genotype TE 9306 tolerance prevailed relatively to the genotype Acalou (Maçãs et al, 2000, Dias andDias et al 2008 24.6/13.9ºC 45d 47mg 29.9/19.5ºC 40d 44mg figure 1.…”

Section: Resultssupporting

confidence: 85%

“…Accordingly, as found in previous studies by our research group, after anthesis Triticum aestivum L. genotype Sever displayed an higher tolerance to heat stress than the genotype Golia (Maçãs et al, 1999;, Dias et al, 2008 and Triticum turgidum subsp. durum genotype TE 9306 tolerance prevailed relatively to the genotype Acalou (Maçãs et al, 2000, Dias andDias et al 2008 24.6/13.9ºC 45d 47mg 29.9/19.5ºC 40d 44mg figure 1. Mean daily temperature during the day (A) and night (B), in the grain filling period, for both treatments.…”

Section: Resultssupporting

confidence: 85%

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IV.Heat stress in Triticum: kinetics of Fe and Mn accumulation

Dias

Lidon

Ramalho

2009

Braz. J. Plant Physiol.

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The interactions between Fe/Mn accumulation and the photosynthetic light reactions were investigated in heat stressed bread and durum wheat genotypes (Triticum aestivum L. and Triticum turgidum subsp.durum). Four genotypes were chosen according to its genetic background diversity. Plants were grown in a greenhouse at two different day/night temperatures regimes (control -25/14ºC and heat stress -31/20ºC), during the grain filling phase. The contents and uptake/translocation of Fe and Mn were evaluated on booting, grain filling and maturity and correlated with chlorophyll a fluorescence parameters. It was found that, under heat stress, the concentrations of Fe in the culm and leaves diminished in bread wheat, but increased in durum wheat. An opposite trend was found on the contents of Fe in the spike, being this effect higher in Sever. During grain filling, the concentrations of Mn in the heat stressed plants raised significantly in the shoot for all genotypes (excepting Golia). After anthesis, the proportion of Mn translocated also augmented with high temperatures. At maturity, the same trend was found in the translocated proportion of Fe. During grain filling, all the studied fluorescence parameters did not vary significantly except q P and q E that decreased in the heat stressed Golia and F V and F v /F m that increases in Acalou. It was concluded that under heat stress, during the grain filling period, Fe and Mn translocation to the shoots accelerates, eventually to overcome the negative effects on several photosynthetic physiological traits.

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Section: Resultssupporting

confidence: 85%

Section: Resultssupporting

confidence: 85%

IV.Heat stress in Triticum: kinetics of Fe and Mn accumulation

Dias

Lidon

Ramalho

2009

Braz. J. Plant Physiol.

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“…The ultra structure and biochemical traits of bread and durum wheat grains under heat stress were checked by Dias et al [111]. Cellular thermo-tolerance is related to yield under heat stress as evaluated according to Blum et al [112].…”

Section: Effect Of Heat Stress On Wheat Physiologymentioning

confidence: 99%

“…Cellular thermo-tolerance in terms of cellular membrane thermo-stability is often camouflaged as an indication of crop heat tolerance and it is therefore considered as a possible selection criterion for heat tolerance. The ultra-structure and biochemical traits of bread and durum wheat grains under heat stress were checked by Dias et al [111]. Heat stress, during grain filling, triggered grain shrinkage with a reduced weight and ultra-structural changes in the aleurone layer and in the endosperm cells.…”

Section: Effect Of Heat Stress On Wheat Physiologymentioning

confidence: 99%

Impacts of Heat Stress on Wheat: A Critical Review

Iqbal¹,

Raja²,

Yasmeen³

et al. 2017

Adv Crop Sci Tech

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A brief review is given of investigations on stress-induced alterations in the yield of different biochemical contents in wheat. Wheat is major cereal crop for fulfilling the calories demands of growing population. Alterations in the worldwide climate are predicted to have critical sentence for crop production. Abiotic stresses such as heat and drought are major abiotic stresses restraining crop production. Heat stress reduces wheat growth by upsetting various physiological and biochemical processes and the developmental stage of the plant is critical in demonstrating the vulnerability of various species and cultivars subjected to high temperature. Heat stress did not affect the protein content but there is strong correlation between leaf nitrogen content and grain protein content. Induction of HSPs seems to be the universal response and adaptation to temperature stress. The synthesis of HSPs is believed to play significant role either in preventing or minimizing the adverse effects of high temperature both at molecular and cellular levels. Wheat has the tendency to adopt diverse types of responses to temperature stress as well as a heat shock by developing thermo-tolerance for the enhancement of the grain quality and yield.

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“…In a previous study, our research group, working on heat stress after anthesis (Maçãs et al, 2000;Dias et al, 2008, found that Triticum aestivum L. genotype Sever is more tolerant than the genotype Golia and that Triticum turgidum subsp. durum genotype TE 9306 tolerance prevailed relatively to the genotype Acalou.…”

Section: Resultsmentioning

confidence: 95%

II. Heat stress in Triticum: kinetics of Cu and Zn accumulation

Dias

Lidon

2009

Braz. J. Plant Physiol.

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The interactions between high temperatures and Cu/Zn accumulation were investigated in bread and durum wheat. Plants were grown in a greenhouse, at two different temperatures regimes (control -25/14ºC and heat stress -31/20ºC), and the contents and uptake/translocation of Cu and Zn were evaluated during three developmental stages of plant growth (booting, grain filling and maturity). During grain filling and at maturity it was found that root, shoot and spike concentrations of Cu increased in heat stressed plants of the genotypes Golia and Acalou. The same trend was observed for root and shoot concentrations of Zn in both durum wheat genotypes. It was concluded that plants submitted to high temperatures (during the grain filling period) become more efficient in the Cu translocation to the shoots.

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Ultrastructure and biochemical traits of bread and durum wheat grains under heat stress

Cited by 61 publications

References 29 publications

IV.Heat stress in Triticum: kinetics of Fe and Mn accumulation

IV.Heat stress in Triticum: kinetics of Fe and Mn accumulation

Impacts of Heat Stress on Wheat: A Critical Review

II. Heat stress in Triticum: kinetics of Cu and Zn accumulation

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